BANK OF AMERICA CORP /DE/
SC 13D, 1999-06-08
NATIONAL COMMERCIAL BANKS
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<PAGE>   1


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                          CARDIAC PATHWAYS CORPORATION

                                (Name of Issuer)

                                  COMMON STOCK

                         (Title of Class of Securities)
                                   0001012367

                                 (CUSIP Number)



           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                  MAY 21, 1999

             (Date of Event which Requires Filing of this Statement)

        If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(e), 13d-1(f), 13d-1(g) check the following
box [ ]

        Note: Schedules filed in paper format shall include a signed original
and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for
other parties to whom copies are to be sent.

        * The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

        The information required on the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934, as amended (the "Exchange Act") or otherwise subject to the
liabilities of that section of the Exchange Act but shall be subject to all
other provisions of the Exchange Act.

                        (Continued on following page(s))




                                    1 of 17

<PAGE>   2

CUSIP No.  0001012367                  13D                  Page  2 of  17 Pages


- --------------------------------------------------------------------------------
(1)     Names of Reporting Persons. SS or I.R.S. Identification Nos. of Above
        Persons
        BankAmerica Ventures
- --------------------------------------------------------------------------------
(2)     Check The Appropriate Box If A Member Of A Group                 (a) [ ]
                                                                         (b) [X]
- --------------------------------------------------------------------------------
(3)     SEC Use Only
- --------------------------------------------------------------------------------
(4)     Source Of Funds*
        WC
- --------------------------------------------------------------------------------
(5)     Check Box If Disclosure Of Legal Proceedings Is Required Pursuant To
        Items 2(d) Or 2(e):                                                  [ ]
- --------------------------------------------------------------------------------
(6)     Citizenship Or Place Of Organization
        California
- --------------------------------------------------------------------------------
Number Of Shares        (7)     Sole Voting Power                        140,000
Beneficially Owned  ------------------------------------------------------------
By Each Reporting       (8)     Shared Voting Power                          -0-
Person With         ------------------------------------------------------------
                        (9)     Sole Dispositive Power
                                                                         140,000
                    ------------------------------------------------------------
                        (10)    Shared Dispositive Power
                                                                             -0-
- --------------------------------------------------------------------------------
(11)    Aggregate Amount Beneficially Owned By Each Reporting Person

        140,000 - See Item 5
- --------------------------------------------------------------------------------
(12)    Check If The Aggregate Amount In Row (11) Excludes Certain Shares*   [ ]

- --------------------------------------------------------------------------------
(13)    Percent Of Class Represented By Amount In Row (11)

        1.4% - See Item 5
- --------------------------------------------------------------------------------
(14)    Type Of Reporting Person

        CO
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!



                                    2 of 17
<PAGE>   3

CUSIP No.  0001012367                  13D                  Page  3 of  17 Pages


- --------------------------------------------------------------------------------
(1)     Names of Reporting Persons. SS or I.R.S. Identification Nos. of Above
        Persons
        Morgan Stanley Venture Partners III, L.L.C.
- --------------------------------------------------------------------------------
(2)     Check The Appropriate Box If A Member Of A Group                 (a) [ ]
                                                                         (b) [X]
- --------------------------------------------------------------------------------
(3)     SEC Use Only
- --------------------------------------------------------------------------------
(4)     Source Of Funds*
        OO
- --------------------------------------------------------------------------------
(5)     Check Box If Disclosure Of Legal Proceedings Is Required Pursuant To
        Items 2(d) Or 2(e):                                                  [ ]
- --------------------------------------------------------------------------------
(6)     Citizenship Or Place Of Organization
        Delaware
- --------------------------------------------------------------------------------
Number Of Shares        (7)     Sole Voting Power                            -0-
Beneficially Owned  ------------------------------------------------------------
By Each Reporting       (8)     Shared Voting Power                      100,000
Person With         ------------------------------------------------------------
                        (9)     Sole Dispositive Power                       -0-
                    ------------------------------------------------------------
                        (10)    Shared Dispositive Power                 100,000
- --------------------------------------------------------------------------------
(11)    Aggregate Amount Beneficially Owned By Each Reporting Person

        100,000 - See Item 5
- --------------------------------------------------------------------------------
(12)    Check If The Aggregate Amount In Row (11) Excludes Certain Shares*   [ ]

- --------------------------------------------------------------------------------
(13)    Percent Of Class Represented By Amount In Row (11)

        1.0% - See Item 5
- --------------------------------------------------------------------------------
(14)    Type Of Reporting Person

        IA
- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!




                                    3 of 17
<PAGE>   4

CUSIP No.  0001012367                  13D                  Page  4 of  17 Pages


- --------------------------------------------------------------------------------
(1)     Names of Reporting Persons. SS or I.R.S. Identification Nos. of Above
        Persons
        Morgan Stanley Venture Capital III, Inc.
- --------------------------------------------------------------------------------
(2)     Check The Appropriate Box If A Member Of A Group                 (a) [ ]
                                                                         (b) [X]
- --------------------------------------------------------------------------------
(3)     SEC Use Only
- --------------------------------------------------------------------------------
(4)     Source Of Funds*
        OO
- --------------------------------------------------------------------------------
(5)     Check Box If Disclosure Of Legal Proceedings Is Required Pursuant To
        Items 2(d) Or 2(e):                                                  [ ]
- --------------------------------------------------------------------------------
(6)     Citizenship Or Place Of Organization
        Delaware
- --------------------------------------------------------------------------------
Number Of Shares        (7)     Sole Voting Power                            -0-
Beneficially Owned  ------------------------------------------------------------
By Each Reporting       (8)     Shared Voting Power                      100,000
Person With         ------------------------------------------------------------
                        (9)     Sole Dispositive Power                       -0-
                    ------------------------------------------------------------
                        (10)    Shared Dispositive Power                 100,000
- --------------------------------------------------------------------------------
(11)    Aggregate Amount Beneficially Owned By Each Reporting Person

        100,000 - See Item 5
- --------------------------------------------------------------------------------
(12)    Check If The Aggregate Amount In Row (11) Excludes Certain Shares*   [ ]

- --------------------------------------------------------------------------------
(13)    Percent Of Class Represented By Amount In Row (11)

        1.0% - See Item 5
- --------------------------------------------------------------------------------
(14)    Type Of Reporting Person

        IA
- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



                                    4 of 17
<PAGE>   5

CUSIP No.  0001012367                  13D                  Page  5 of  17 Pages


- --------------------------------------------------------------------------------
(1)     Names of Reporting Persons. SS or I.R.S. Identification Nos. of Above
        Persons
        Morgan Stanley Venture Partners III, L.P.
- --------------------------------------------------------------------------------
(2)     Check The Appropriate Box If A Member Of A Group                 (a) [ ]
                                                                         (b) [X]
- --------------------------------------------------------------------------------
(3)     SEC Use Only
- --------------------------------------------------------------------------------
(4)     Source Of Funds*
        OO
- --------------------------------------------------------------------------------
(5)     Check Box If Disclosure Of Legal Proceedings Is Required Pursuant To
        Items 2(d) Or 2(e):                                                  [ ]
- --------------------------------------------------------------------------------
(6)     Citizenship Or Place Of Organization
        Delaware
- --------------------------------------------------------------------------------
Number Of Shares        (7)     Sole Voting Power                            -0-
Beneficially Owned  ------------------------------------------------------------
By Each Reporting       (8)     Shared Voting Power                       87,731
Person With         ------------------------------------------------------------
                        (9)     Sole Dispositive Power                       -0-
                    ------------------------------------------------------------
                        (10)    Shared Dispositive Power                  87,731
- --------------------------------------------------------------------------------
(11)    Aggregate Amount Beneficially Owned By Each Reporting Person

        87,731 - See Item 5
- --------------------------------------------------------------------------------
(12)    Check If The Aggregate Amount In Row (11) Excludes Certain Shares*   [ ]

- --------------------------------------------------------------------------------
(13)    Percent Of Class Represented By Amount In Row (11)

        0.9% - See Item 5
- --------------------------------------------------------------------------------
(14)    Type Of Reporting Person

        PN
- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!




                                    5 of 17
<PAGE>   6

CUSIP No.  0001012367                  13D                  Page  6 of  17 Pages

- --------------------------------------------------------------------------------
(1)     Names of Reporting Persons. SS or I.R.S. Identification Nos. of Above
        Persons
        Morgan Stanley Venture Investors, III, L.P.
- --------------------------------------------------------------------------------
(2)     Check The Appropriate Box If A Member Of A Group                 (a) [ ]
                                                                         (b) [X]
- --------------------------------------------------------------------------------
(3)     SEC Use Only
- --------------------------------------------------------------------------------
(4)     Source Of Funds*
        OO
- --------------------------------------------------------------------------------
(5)     Check Box If Disclosure Of Legal Proceedings Is Required Pursuant To
        Items 2(d) Or 2(e):                                                  [ ]
- --------------------------------------------------------------------------------
(6)     Citizenship Or Place Of Organization
        Delaware
- --------------------------------------------------------------------------------
Number Of Shares        (7)     Sole Voting Power                            -0-
Beneficially Owned  ------------------------------------------------------------
By Each Reporting       (8)     Shared Voting Power                        8,424
Person With         ------------------------------------------------------------
                        (9)     Sole Dispositive Power                       -0-
                    ------------------------------------------------------------
                        (10)    Shared Dispositive Power                   8,424
- --------------------------------------------------------------------------------
(11)    Aggregate Amount Beneficially Owned By Each Reporting Person

        8,424 - See Item 5
- --------------------------------------------------------------------------------
(12)    Check If The Aggregate Amount In Row (11) Excludes Certain Shares*   [ ]

- --------------------------------------------------------------------------------
(13)    Percent Of Class Represented By Amount In Row (11)

        0.08% - See Item 5
- --------------------------------------------------------------------------------
(14)    Type Of Reporting Person

        PN
- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!




                                    6 of 17
<PAGE>   7

CUSIP No.  0001012367                  13D                  Page  7 of  17 Pages


- --------------------------------------------------------------------------------
(1)     Names of Reporting Persons. SS or I.R.S. Identification Nos. of Above
        Persons
        The Morgan Stanley Venture Partners Entrepreneur Fund, L.P.
- --------------------------------------------------------------------------------
(2)     Check The Appropriate Box If A Member Of A Group                 (a) [ ]
                                                                         (b) [X]
- --------------------------------------------------------------------------------
(3)     SEC Use Only
- --------------------------------------------------------------------------------
(4)     Source Of Funds*
        OO
- --------------------------------------------------------------------------------
(5)     Check Box If Disclosure Of Legal Proceedings Is Required Pursuant To
        Items 2(d) Or 2(e):                                                  [ ]
- --------------------------------------------------------------------------------
(6)     Citizenship Or Place Of Organization
        Delaware
- --------------------------------------------------------------------------------
Number Of Shares        (7)     Sole Voting Power                            -0-
Beneficially Owned  ------------------------------------------------------------
By Each Reporting       (8)     Shared Voting Power                        3,846
Person With         ------------------------------------------------------------
                        (9)     Sole Dispositive Power                       -0-
                    ------------------------------------------------------------
                        (10)    Shared Dispositive Power                   3,846
- --------------------------------------------------------------------------------
(11)    Aggregate Amount Beneficially Owned By Each Reporting Person

        3,846 - See Item 5
- --------------------------------------------------------------------------------
(12)    Check If The Aggregate Amount In Row (11) Excludes Certain Shares*   [ ]

- --------------------------------------------------------------------------------
(13)    Percent Of Class Represented By Amount In Row (11)

        0.04% - See Item 5
- --------------------------------------------------------------------------------
(14)    Type Of Reporting Person

        PN
- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



                                    7 of 17
<PAGE>   8

ITEM 1. SECURITY AND ISSUER.

        The class of equity securities to which this statement relates is the
Common Stock, $0.001 par value per share, (the "Common Stock") of Cardiac
Pathways Corporation, a Delaware corporation (the "Company"). The principal
executive offices of the Company are located at 995 Benecia Avenue, Sunnyvale,
California 94086.

ITEM 2. IDENTITY AND BACKGROUND.

        (a)     This Schedule 13D is being filed jointly on behalf of the
following persons (collectively, the "Reporting Persons"): (1) BankAmerica
Ventures, a California corporation, (2) Morgan Stanley Venture Partners III,
L.L.C., a Delaware Limited Liability Company ("MSVP III, L.L.C."), (3) Morgan
Stanley Venture Capital III, Inc., a Delaware corporation, ("MSVC III, Inc."),
(4) Morgan Stanley Venture Partners III, L.P., a Delaware limited partnership,
(5) The Morgan Stanley Venture Partners Entrepreneur Fund, L.P., a Delaware
limited partnership, and (6) Morgan Stanley Venture Investors III, L.P. a
Delaware limited partnership (Morgan Stanley Venture Partners III, L.P., Morgan
Stanley Venture Investors III, L.P., and The Morgan Stanley Venture Partners
Entrepreneur Fund, L.P., are collectively referred to as the "MSDW Funds").

        BankAmerica Ventures is a wholly owned subsidiary of Bank of America
National Trust and Savings Association, a national banking association existing
under the laws of the United States of America ("BANTSA"). The general partner
of each of the MSDW Funds is MSVP III L.L.C. The institutional
managing member of MSVP III, L.L.C. is MSVC III, Inc., a wholly owned
subsidiary of Morgan Stanley Dean Witter & Co.

        (b)     The address of the principal business and offices of BankAmerica
Ventures is 950 Tower Lane, Suite 700, Foster City, CA 94404. The address of the
principal business and offices of BANTSA is 555 California Street, San
Francisco, CA 94104.

                The address of the principal business and office of the MSDW
Funds, MSVC III, Inc. and MSVP III, L.L.C. is 1221 Avenue of the Americas, New
York, New York 10020.

        (c)     Not applicable.

        (d)     None of the Reporting Persons nor, to the knowledge of the
Reporting Persons, any of the other persons listed on Schedules A, B and C
attached hereto has been convicted in a criminal proceeding in the past five
years (excluding traffic violations or similar misdemeanors).

        (e)     During the past five years, none of the Reporting Persons nor,
to the knowledge of the Reporting Persons, any of the other persons listed on
Schedules A, B and C attached hereto was a party to a civil proceeding of a
judicial or administrative body of competent jurisdiction as a result of which
such person was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to, federal
or state securities laws of finding any violation with respect to such laws.

        (f)     Not applicable.




                                    8 of 17
<PAGE>   9

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

        BankAmerica Ventures is the beneficial owner of warrants to purchase two
hundred eighty (280) shares of the Company's Series B Convertible Preferred
Stock (the "Series B Preferred"), which shares are convertible at the option of
the holder into 280,000 shares of Common Stock. The aggregate exercise price of
such warrants is two hundred eighty thousand dollars ($280,000). In the event of
the exercise of such warrants, such funds shall be provided by BankAmerica
Ventures's capital available for investment.

        The MSDW Funds are the beneficial owner of warrants to purchase two
hundred (200) shares of Series B Preferred, which shares are convertible at the
option of the holder into 200,000 shares of Common Stock. The aggregate exercise
price of such warrants is two hundred thousand dollars ($200,000). In the event
of the exercise of such warrants, such funds shall be provided by the MSDW
Funds' capital available for investment.

        The State of Wisconsin Investment Board ("SWIB")is the beneficial owner
of warrants to purchase one hundred twenty (120) shares of Series B Preferred,
which shares are convertible at the option of the holder into one hundred twenty
thousand (120,000) shares of Common Stock. The aggregate exercise price of such
warrants is one hundred twenty thousand dollars ($120,000).

ITEM 4. PURPOSE OF TRANSACTION.

Bridge Financing. In an effort to raise additional capital, on May 21, 1999, the
Company entered into a bridge loan with BankAmerica Ventures, the MSDW Funds,
and SWIB (the "Bridge Investors") for an aggregate amount of three million
dollars ($3,000,000), pursuant to the terms of that certain Securities Purchase
Agreement, dated May 20, 1999, and executed on May 21, 1999 (the "Securities
Purchase Agreement") filed as Exhibit 2 hereto (the "Bridge Financing"). The
Bridge Investors may increase the amount of the Bridge Financing up to an
aggregate of six million dollars ($6,000,000) at their election. The Cardiac
Pathways Corporation Senior Convertible Floating Rate Bridge Notes (the
"Notes"), filed as Exhibit 3 hereto, issued by the Company in connection with
the Bridge Financing are secured by substantially all of the Company's assets
pursuant to the terms of that certain Security Agreement, dated May 20, 1999,
and executed on May 21, 1999, filed as Exhibit 4 hereto, and accrue interest at
a floating rate per annum equal to the sum of the variable rate of interest
announced by Silicon Valley Bank as its "prime rate" in effect from time to
time, plus 2.00%. The Notes are convertible into shares of Series B Preferred at
the rate of $1,000 per share. On May 21, 1999, pursuant to the terms of the
Securities Purchase Agreement, the Company issued to each Bridge Investor a
warrant, the form of which is filed as Exhibit 5 hereto ("Warrant"), to purchase
a number of shares of Series B Preferred equal to the quotient of (a) the
aggregate amount of the Notes held by such Bridge Investor multiplied by ten
percent (10%); divided by (b) one thousand (1,000) (the "Warrant Coverage"). In
the event that the Bridge Investors should choose to lend up to an additional
three million dollars ($3,000,000) to the Company, the Company shall issue to
the Bridge Investors the same Warrant Coverage on such additional funds, for an
aggregate Warrant Coverage of up to three hundred (300) shares of Series B
Preferred, convertible into an aggregate of three hundred thousand (300,000)
shares of Common Stock. The shares of Common Stock disclosed as being
beneficially owned by the Bridge Investors for the purposes of Rule 13d-5(b)(1)
and Rule 13d-3 promulgated under the Exchange Act consist of (i) shares issuable
upon conversion of Series B Preferred issuable upon exercise of Warrants to
purchase an aggregate of three hundred (300) shares of Series B Preferred,
convertible into an aggregate of 300,000 Shares of Common Stock, and (ii)
1,755,000 shares of Common Stock currently held by SWIB.

        Purchase Agreement. The Notes and the interest accrued thereon are
convertible into shares of Series B Preferred as set forth above in accordance
with the terms of the Securities Purchase Agreement and that certain Series B
Convertible Preferred Stock Purchase Agreement, filed as Exhibit 6 hereto (the
"Purchase Agreement"), dated May 20, 1999, executed May 21, 1999 by and between
the Company on the one hand, and the Bridge Investors, Van Wagoner Capital
Management, and Thomas Fogarty (currently a director of the Company) on the
other hand (collectively, the "Series B Investors"). Under the terms of the
Purchase Agreement, upon the satisfaction of certain closing conditions, the
Company shall issue and sell up to forty million (40,000,000) shares of Series B
Preferred to the Series B Investors for an aggregate purchase price of forty
million dollars ($40,000,000), which amounts include the issuance of any shares
of Series B Preferred pursuant to the




                                    9 of 17
<PAGE>   10

conversion of the Notes and the interest accrued thereon, but not shares of
Series B Preferred issued pursuant to the exercise of Warrants. The Notes and
the interest thereon may not be converted into Series B Preferred, nor will
shares of Series B Preferred be purchased under the terms of the Purchase
Agreement, unless and until the Company's stockholders approve the issuance of
such shares, as a result, such shares are not included in shares beneficially
owned for the purpose of Rule 13d-3.

        Under the terms of the Purchase Agreement, the Company's existing board
of directors shall resign effective upon the closing date of the Purchase
Agreement.

        Thomas M. Prescott has been appointed as the Company's new chief
executive officer replacing William N. Starling, the Company's former chief
executive officer and president. Mr. Prescott was appointed at the
recommendation of the Series B Investors in accordance with the terms of the
Purchase Agreement.

        The Purchase Agreement provides that the holders of the Series B
Preferred shall have the right to nominate three (3) members of the Company's
board of directors, two (2) of whom shall be representatives of BankAmerica
Ventures and one (1) of whom shall be a representative of Morgan Stanley Venture
Partners III, L.P. In the event that the number of the Company's directors
exceeds five (5), the holders of the Series B Preferred shall have the right to
nominate one (1) additional director. All members of the Company's board of
directors nominated by holders of the Series B Preferred shall have the right to
be members of all committees of the Company's board of directors. The Company
further agrees not to file any proxy or other materials with the Securities and
Exchange Commission opposed to the re-election of such persons as directors of
the Company unless such director has committed any action giving the
stockholders of the Company the right to remove such director for cause, and to
use all reasonable efforts to secure the election of such persons as directors.
The Purchase Agreement provides that the remaining directors of the Company will
include one (1) representative of the Company's management, who shall be the
Company's chief executive officer and one (1) outside representative appointed
by a majority of the Company's board of directors.

        As of May 21, 1999, under the terms of the Purchase Agreement, the
Company has agreed to grant to BankAmerica Ventures, Morgan Stanley Venture
Partners III, L.P., and SWIB non-voting, board observation rights.

        Pursuant to the terms of the Purchase Agreement, the Company has agreed
to use its best efforts to obtain stockholder approval to amend its Certificate
of Incorporation to effect a 1 for 5 reverse split of the outstanding Common
Stock and to amend its Bylaws to (i) fix the number of directors at five (5)
members with a provision that the number of directors may be increased to seven
(7) members with the consent of the directors who are representatives of the
Series B Investors, and (ii) to require the affirmative vote of the holders of
at least a majority of the voting power of all of the then outstanding shares
entitled to vote, voting together as a single class, to (I) increase the number
of shares reserved for issuance under the Company's stock plans, such that the
quotient of (A) the shares outstanding issued pursuant to the Company's stock
plans plus the shares available for issuance under the Company's stock plans
plus additional shares proposed to be issued under the Company's stock plans;
divided by (B) the total outstanding capital stock of the Company, including any
outstanding convertible preferred stock, on an as converted basis, is not
greater than thirty percent (30%); and (II) re-price any options granted after
May 20, 1999 to purchase shares of Common Stock under the Company's stock plans,
provided that the Company shall only re-price each option outstanding prior to
May 20, 1999 once. It is a condition to closing of the Purchase Agreement that
the Company obtain stockholder approval to increase the number of shares of
Common Stock available for management and employees under the Company's 1991
Stock Option Plan by 4,000,000 shares.

        Voting Agreement. Under the terms of the Purchase Agreement, the Company
has entered into a voting agreement, a form of which as filed as Exhibit 7
hereto, (the "Voting Agreement") with certain directors,




                                    10 of 17
<PAGE>   11

officers, and stockholders of the Company. Under the terms of the Voting
Agreement, such stockholders have agreed to vote their shares of the Company's
common stock in favor of the approval of the sale of the Series B Preferred
pursuant to the terms of the Purchase Agreement (the "Financing") and against
(a) any proposal made in opposition to or in competition with the completion of
the sale of the sale of the Financing, (b) any liquidation or winding up of the
Company and (c) any action that would make consummation of the Financing
unfeasible. Such stockholders further agreed from the effective date of the
Voting Agreement through the closing date of the Purchase Agreement, to not
directly or indirectly solicit or encourage the acquisition of twenty percent
(20% ) or more of the Company's securities by a third party other than the
Series B Investors.

        The Rights Preferences and Privileges of the Series B Preferred. The
Certificate of Designation filed by the Company with the Office of the Secretary
of State for the State of Delaware, a form of which is filed as Exhibit 8
hereto, sets forth the rights, preferences, and privileges of the Series B
Preferred, including, but not limited to the following:

        Each share of Series B Preferred will initially be convertible into
1,000 shares of Common Stock (before giving effect to the proposed reverse stock
split). The conversion ratio of the Series B Preferred will be subject to
adjustment for price based anti-dilution.

        The Series B Preferred will be entitled to an 11% cumulative dividend
per year and will have a liquidation preference equal to the initial purchase
price of $1,000 plus accrued but unpaid dividends upon the occurrence of a
liquidation, a merger or the sale of all or substantially all of the Company's
capital stock or assets.

        The holders of the Series B Preferred will vote on all matters presented
to the Company's stockholders on an as-converted to Common Stock basis. In
addition, the affirmative vote of holders of the Series B Preferred, voting as a
separate class, will be required to: (i) amend or repeal any provision, or add
any provision to the Company's Certificate of Incorporation or Bylaws which
change the rights of the Series B Preferred; (ii) increase or decrease (other
than by redemption or conversion) the total number of authorized shares of the
Company's preferred stock or Common Stock; (iii) authorize or issue, or obligate
itself to issue, any other security, including any other security convertible
into or exercisable for any security having a preference over, or being on a
parity with, the Series B Preferred with respect to voting, dividends,
redemption or upon liquidation; (iv) issue any shares of Common Stock, other
than (a) shares of Common Stock issuable or issued to employees, consultants or
directors of the Company directly or pursuant to a stock option plan or
restricted stock plan approved by the board of directors, including the
representatives of the Series B Investors; (b) shares of Common Stock issuable
or issued upon conversion of the Company's Series A Participating Preferred
Stock or Series B Preferred or as dividends or distributions on the Series A
Participating Preferred Stock or Series B Preferred; (c) shares of Common Stock
issuable or issued upon exercise of warrants issued to banks, equipment lessors
or other venders, where such Common Stock or warrants were approved by the board
of directors, including the representatives of the Series B Investors; or (d)
shares of Common Stock issuable or issued as consideration for business
combinations or corporate partnering agreements approved by the board of
directors, including the representatives of the Series B Investors; (v) declare
or pay any dividends on its Common Stock or redeem, purchase or otherwise
acquire (or pay into or set aside for a sinking fund for such purpose) any share
or shares of Common Stock; provided, however, that this restriction shall not
apply to the repurchase of shares of Common Stock from employees, officers,
directors, consultants or other persons performing services for the Company or
any subsidiary pursuant to agreements under which the Company has the option to
repurchase such shares at cost or at cost upon the occurrence of certain events,
such as the termination of employment; (vi) sell, convey, or otherwise dispose
of all or substantially all of its property or business or merge into or
consolidate with any other corporation (other than a wholly-owned subsidiary
corporation) or effect any transaction or series of related transactions in
which more than fifty percent (50%) of the voting power of this corporation is
disposed of; (vii) repurchase any series of preferred stock, or (viii) increase
or decrease the size of the Company's board of directors.

        Redemption Rights. At any time after May 31, 2004, the holders of a
majority of the then outstanding Series B Preferred may request that the Company
redeem the outstanding Series B Preferred in whole, upon


                                    11 of 17
<PAGE>   12

payment in cash in respect of each share of Series B Preferred redeemed of an
amount equal to $1,000 plus accrued but unpaid dividends on such shares. In the
event the Company elects not to redeem the then outstanding Series B Preferred,
the cumulative dividend rate payable on the Series B Preferred shall increase
six percent (6%), each year at the beginning after such date the Company elects
not to redeem the Series B Preferred.

        Registration Rights. The Company and the Series B Investors have entered
into that certain Registration Rights Agreement, dated May 20, 1999, and
executed on May 21, 1999, filed as Exhibit 9 hereto, (the "Rights Agreement").
Under the terms of the Rights Agreement, at any time after May 31, 2000 the
holders of at least forty five percent (45%) of the Series B Preferred issued
pursuant to the Purchase Agreement (the "Shares") can (i) request the Company to
effect a registration of the Common Stock into which the then outstanding Shares
are convertible, of at least $7,500,000 (a "Requested Registration") and (ii)
request the Company to effect a registration of at least $2,000,000 on Form S-3.
The Series B Investors are entitled to two Requested Registrations, and one
registration on Form S-3 per twelve (12) month period. In addition, in the event
the Company proposed to register any of its securities for its own account or
the account of any of its stockholders (other then certain registrations
relating (i) solely to employee benefits plans, (ii) to a registration on Form
S-4, or (iii) relating solely to a Securities and Exchange Commission Rule 145
transaction), the Series B Investors will have the right, upon a timely request
and subject to a right of priority in favor of the Company, to have the common
stock into which the Shares are convertible included in such registration. All
expenses for the aforementioned registrations shall be paid by the Company.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

        (a)     Upon the exercise of Warrants issued in connection with a Bridge
Financing for an aggregate of three million dollars ($3,000,000), BankAmerica
Ventures has the right to acquire and for the purposes of Rule 13d-3 promulgated
under the Exchange Act may be deemed to beneficially own one hundred forty
(140) shares of Series B Preferred, which are convertible at the option of the
holder into one hundred forty thousand (140,000) shares of Common Stock, or
approximately 1.4% of the outstanding shares of Common Stock as of May 21, 1999.

        Upon the exercise of Warrants issued in connection with a Bridge
Financing for an aggregate of three million dollars ($3,000,000), the MSDW Funds
have the right to acquire and for the purposes of Rule 13d-3 promulgated under
the Exchange Act may be deemed to beneficially own one hundred (100) shares of
Series B Preferred, which are convertible at the option of the holder into
100,000 shares of Common Stock, or approximately 1.0% of the outstanding shares
of Common Stock as of May 21, 1999.

        Upon the exercise of Warrants issued in connection with a Bridge
Financing for an aggregate of three million dollars ($3,000,000), SWIB has the
right to acquire and for the purposes of Rule 13d-3 promulgated under the
Exchange Act may be deemed to beneficially own sixty (60) shares of Series B
Preferred, which are convertible at the option of the holder into sixty thousand
60,000 shares of Common Stock, which when added to the 1,755,000 shares of
Common Stock owned by SWIB prior to May 21, 1999 results in the beneficial
ownership of approximately 18.0% of the outstanding shares of Common Stock as of
May 21, 1999.

        BankAmerica Ventures, MSVP III, L.L.C., MSVC III, Inc., the MSDW Funds,
and SWIB for the purposes of Rule 13d-5(b)(i) and Rule 13d-3 promulgated under
the Exchange Act may be deemed to beneficially own an aggregate of 2,055,000
shares of Common Stock, or approximately 19.9% of the outstanding shares of
Common Stock as of May 21, 1999. The Reporting Persons do not affirm the
existence of a group and are filing this statement jointly pursuant to Rule
13d-1(k)(1) promulgated under the Exchange Act.

        (b)     BankAmerica Ventures has the power to direct the disposition of
and vote the shares of Series B Preferred held by it. By virtue of the
relationship previously reported under Item 2 of this statement, BANTSA may be
deemed to have indirect beneficial ownership of the shares of Series B Preferred
owned by BankAmerica Ventures. BANTSA disclaims any beneficial ownership that it
may be deemed to have as a result of BankAmerica Venture's ownership of the
shares of Series B Preferred.

        By virtue of the relationship previously reported under Item 2 of this
statement, each of MSVC III, Inc. and MSVP III L.L.C. may be deemed to have
shared voting and dispositve power with respect to the shares of Series B
Preferred owned by the MSDW Funds.


                                    12 of 17
<PAGE>   13

        (c)     None of the persons named in Item 5 (a) above has effected any
transaction in the Common Stock during the past 60 days.

        (d)     As described in Item 4 of this statement, BankAmerica Ventures,
the MSDW Funds, and SWIB each shall be entitled to receive dividends declared on
their respective shares of Series B Preferred and proceeds from the sale of the
Common Stock into which such shares are convertible. By virtue of the
relationships described in Item 2 of this statement, BANTSA may be deemed to
have the power to direct the receipt of dividends declared on the shares of
Series B Preferred held by BankAmerica Ventures and the proceeds from the sale
of the Common Stock into which such shares are convertible, and each of MSVC
III, Inc. and MSVP III, L.L.C. may be deemed to have the power to direct the
receipt of dividend declared on the shares of Series B Preferred held by the
MSDW Funds and the proceeds from the sale of the Common Stock into which such
shares are convertible.

        (e)     Not applicable.

        ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH
RESPECT TO SECURITIES OF THE ISSUER.

        See response to Item 4.

        The following documents are attached hereto as Exhibits and are
incorporated by this reference:

        (i) Cardiac Pathways Corporation Securities Purchase Agreement, dated
May 20, 1999, and executed on May 21, 1999; (ii) Form of Cardiac Pathways
Corporation Senior Convertible Floating Rate Bridge Note; (iii) Cardiac Pathways
Corporation Security Agreement, dated May 20, 1999, and executed on May 21,
1999; (iv) Form of Cardiac Pathways Corporation Warrants for the Purchase of
Shares of Preferred Stock of Cardiac Pathways Corporation; (v) Cardiac Pathways
Corporation Series B Convertible Preferred Purchase Agreement, dated May 20,
1999, and executed on May 21, 1999; (vi) Form of Cardiac Pathways Corporation
Voting Agreement by and between the Company and certain directors, officers and
stockholders of the Company, (vii) Form of Cardiac Pathways Corporation
Certificate of Designation; and (viii) Cardiac Pathways Corporation Registration
Rights Agreement, dated May 20, 1999, and executed on May 21, 1999.


ITEM 7. MATERIAL TO BE FILED AS EXHIBITS.

        Exhibit 1:  Joint Filing Agreement

        Exhibit 2:  Cardiac Pathways Corporation Securities Purchase Agreement

        Exhibit 3:  Form of Cardiac Pathways Corporation Senior Convertible
                    Floating Rate Bridge Note

        Exhibit 4:  Cardiac Pathways Corporation Security Agreement

        Exhibit 5:  Form of Cardiac Pathways Corporation Warrants for The
                    Purchase of Shares of Preferred Stock of Cardiac
                    Pathways Corporation

        Exhibit 6:  Cardiac Pathways Corporation Series B Convertible Preferred
                    Stock Purchase Agreement

        Exhibit 7:  Form of Cardiac Pathways Corporation Voting Agreement

        Exhibit 8:  Form of Cardiac Pathways Corporation Certificate of
                    Designation

        Exhibit 9:  Cardiac Pathways Corporation Registration Rights Agreement



                                    13 of 17
<PAGE>   14

SIGNATURE

        After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: June 4, 1999


<TABLE>
<S>                                                    <C>
BANKAMERICA VENTURES                                   MORGAN STANLEY VENTURE PARTNERS III, L.L.C.

By: /s/ Michael J. Murray                              By: Morgan Stanley Venture Capital III, Inc.,
   --------------------------------------------            its Institutional Managing Member
Its  Chairman of the Board
   --------------------------------------------        By: /s/ Debra Abramovitz
                                                          --------------------------------------------
                                                       Name:  Debra Abramovitz
MORGAN STANLEY VENTURE CAPITAL III, INC.               Title: Vice President

By: /s/ Debra Abramovitz                               MORGAN STANLEY VENTURE PARTNERS III, L.P.
   --------------------------------------------
Name: Debra Abramovitz                                 By: Morgan Stanley Venture Partners III,
Title: Vice President                                      Inc., its General Partner

                                                       By:  Morgan Stanley Venture Capital III,
MORGAN STANLEY VENTURE INVESTORS III, L.P.             Inc. Its Institutional Managing Member

By: Morgan Stanley Venture Partners III, L.L.C.        By: /s/ Debra Abramovitz
    its General Partner                                   --------------------------------------------
                                                       Name:  Debra Abramovitz
                                                       Title: Vice President
By: Morgan Stanley Venture Capital III, Inc.
    its Institutional Managing Member
                                                       THE MORGAN STANLEY VENTURE PARTNERS
By: /s/ Debra Abramovitz                               ENTREPRENEUR FUND, L.P.
   --------------------------------------------
Name: Debra Abramovitz                                 By: Morgan Stanley Venture Partners III, L.L.C.
Title: Vice President                                      its General Partner

                                                       By: Morgan Stanley Venture Capital III, Inc.,
                                                           its Institutional Managing Member

                                                       By: /s/Debra Abramovitz
                                                          --------------------------------------------
                                                       Name:  Debra Abramovitz
                                                       Title: Vice President
</TABLE>




                                    14 of 17
<PAGE>   15

                                   SCHEDULE A

                        EXECUTIVE OFFICERS AND DIRECTORS
                                       OF
                              BANKAMERICA VENTURES

        The names of the Directors and the names and titles of the Executive
Officers of BankAmerica Ventures are set forth below. The principal business
address of each Director and officer is BankAmerica Ventures, 950 Tower Lane,
Suite 700, Foster City, California 94404.

Directors
- ---------
Edward J. McCaffrey
James D. Murphy
Michael J. Murray
Terry E. Perucca

Philip Greer, Advisory Director

Officers
- --------
Michael J. Murray                  Chairman of the Board
Terry E. Perucca,                  Vice Chairman of the Board
James D. Murphy                    President and Managing Director
Anchie Y. Kuo                      Managing Director
Jess R. Marzak                     Managing Director
M. Ann O'Brien                     Managing Director
Charles R. Conradi                 Senior Vice President and Tax Officer
David R. Smith                     Senior Vice President and Tax Officer
Gary S. Williams                   Senior Vice President and Tax Officer
James Wolfrom                      Senior Vice President and Tax Officer
William B. Franklin                Controller and Assistant Treasurer
Kate D. Mitchell                   Principal
Rory O'Driscoll                    Principal
Robert M. Obuch                    Principal
George E. Rossmann                 Principal
Erick C. Christensen               Vice President
Susan M. Lurn                      Vice President and Tax Officer
Duane L. Smith                     Vice President and Tax Officer
Edward J. McCaffrey                Treasurer and Chief Investment Officer
Edward J. Stark                    Secretary
Robert S. Fore                     Assistant Secretary
Hayley J. Hoad                     Assistant Secretary
Marlene A. Sharland                Assistant Secretary
Christine M. Sokitch               Assistant Secretary
Nina Tai                           Assistant Secretary
Rick M. Wacula,                    Assistant Secretary
J. Darrell Nolan                   Assistant Treasurer
Stephen E. Sudhoff                 Assistant Treasurer
Gerald W. Howard                   Compliance Officer
Louis C. Bock                      Associate
Mark J. Brooks                     Associate
John R. Dougery, Jr.               Associate
Renee M. Ansbro                    Assistant Controller
Michael J. Hornig                  Assistant Controller



                                    15 of 17
<PAGE>   16

                                   SCHEDULE B

                        EXECUTIVE OFFICERS AND DIRECTORS
                                       OF
                         BANK OF AMERICA NATIONAL TRUST
                             AND SAVINGS ASSOCIATION

        The names of the Directors and the names and titles of the Executive
Officers of Bank of America National Trust and Savings Association are set forth
below. The principal business address of each Director and officer is Bank of
America National Trust and Savings Association, 555 California Street, San
Francisco, California 94104.

<TABLE>
<CAPTION>
DIRECTOR                         NAME
- --------                         ----
<S>                              <C>
Chairman                         Hugh L. McColl, Jr.
Director                         James H. Hance, Jr.
                                 Kenneth D. Lewis
                                 Michael John Murray
                                 F. William Vandiver,
                                 Jr.
</TABLE>

<TABLE>
<CAPTION>
OFFICER                          NAME
- -------                          ----
<S>                              <C>
Chairman of the Board            Hugh L. McColl, Jr.
Chief Executive Officer          Hugh L. McColl, Jr.
Vice Chairman                    James H. Hance, Jr.
President                        Michael John Murray
Executive Vice President         James W. Kiser
Group Executive Vice President   Raymond R. Peters
Executive Vice President         Paul J. Polking
Corporate counsel                James W. Kiser
General Counsel                  Paul J. Polking
Chief Financial Officer          James H. Hance, Jr.
General Auditor                  Joe L. Price
Secretary                        James W. Kiser
Assistant Secretary              Marlene Sharland
                                 Christine M. Sokitch
                                 Nina Tai
                                 Rick M. Wacula
Cashier                          Raymond R. Pews
Treasurer                        Raymond R. Peters
Risk Management Executive        Joe L. Price
                                 F. William Vandiver,
                                 Jr.
Managing Director                Michael John Murray
President, Consumer &            Kenneth D. Lewis
Commerical Banking
President Global Corporate &     Michael John Murray
Investment Banking
</TABLE>



                                    16 of 17
<PAGE>   17

                                   SCHEDULE C

                        EXECUTIVE OFFICERS AND DIRECTORS
                                       OF
                    MORGAN STANLEY VENTURE CAPITAL III, INC.

        The names of the Directors and the names and titles of the Executive
Officers of Morgan Stanley Venture Capital III, Inc. ("MSVC III Inc.") are set
forth below. The or other officer principal occupation for each of the persons
listed below is as a Managing Director or other officer of Morgan Stanley & Co.
Incorporated. If no address is given, the Director's or Executive Officer's
business address is that of Morgan Stanley & Co. Incorporated at 1221 Avenue of
the Americas, New York, New York 10020. Unless otherwise indicated, each title
set forth opposite an individual's name refers to MSVC III, Inc. and each
individual is a United States citizen.

<TABLE>
<CAPTION>
NAME, BUSINESS ADDRESS                            EXECUTIVE OFFICER TITLE
- ----------------------                            -----------------------
<S>                                               <C>
*Alan Goldberg                                    Chairman
*Guy Louis deChazal                               President
Debra Eve Abramovitz                              Vice President
Kenneth Clifford                                  Chief Financial Officer
*Scott S. Halstead                                Vice President
*William James Harding                            Vice President
*Mian Fazla Husain                                Vice President
*Robert John Loarie                               Vice President
*John Ehrenkranz                                  No Title
*Dennis Sherva                                    No Title
</TABLE>

- -------------------------------------------------

*Director



                                    17 of 17

<PAGE>   1
                                                                       EXHIBIT 1


                             JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as
amended, each of the persons named below agrees to the joint filing of a
Statement on Schedule 13D (including amendments thereto) with respect to the
Series B Preferred stock, par value $0.001, of Cardiac Pathways Corporation, a
Delaware corporation and further agrees that this Joint Filing Agreement be
included as an exhibit to such filings provided that, as contemplated by
Section 13d-1(k)(ii), no person shall be responsible for the completeness or
accuracy of the information concerning the other persons making the filing,
unless such person knows or has reason to believe that such information is
inaccurate. This Joint Filing may be executed in any number of counterparts,
all of which together shall constitute one and the same instrument.

Date: June 4, 1999

BANKAMERICA VENTURES               MORGAN STANLEY VENTURE PARTNERS III, L.L.C.

By:  /s/ JAMES D. MURPHY           By: Morgan Stanley Venture Capital III, Inc.,
     ---------------------             its Institutional Managing Member
Name:  James D. Murphy
Title: President and Managing
       Director

                                   BY: /s/ DEBRA ABRAMOVITZ
                                       -------------------------
                                   Name:   Debra Abramovitz
                                   Title:  Vice President

                                   MORGAN STANLEY VENTURE PARTNERS III, L.P.



                                   By: Morgan Stanley Venture Partners III,
                                       L.L.C., its General Partner

MORGAN STANLEY VENTURE             By: Morgan Stanley Venture Capital III,
CAPITAL III, INC.                      L.L.C., its Institutional Managing Member


By: /s/ DEBRA ABRAMOVITZ           By: /s/ DEBRA ABRAMOVITZ
    ---------------------              ----------------------
Name: Debra Abramovitz             Name: Debra Abramovitz
Title: Vice President              Title: Vice President



MORGAN STANLEY VENTURE             THE MORGAN STANLEY VENTURE PARTNERS
INVESTORS III, INC.                ENTREPRENEUR FUND, L.P.


By: Morgan Stanley Venture          By: Morgan Stanley Venture Partners III,
    Partners III, L.L.C.                L.L.C. its General Partner
    its General Partner

By: Morgan Stanley Venture          By: Morgan Stanley Venture Capital III, Inc.
    Capital III, Inc. L.L.C.            its Institutional Managing Member
    its Institutional
    Managing Member


By: /s/ DEBRA ABRAMOVITZ            By: /s/ DEBRA ABRAMOVITZ
    -------------------------           ---------------------------
Name:  Debra Abramovitz             Name:  Debra Abramovitz
Title: Vice President               Title: Vice President

<PAGE>   1

                                                                       EXHIBIT 2

                          SECURITIES PURCHASE AGREEMENT

                                   dated as of

                                  May 20, 1999

                                      among

                          CARDIAC PATHWAYS CORPORATION

                                       and

                          The Purchasers listed on the
                             signature pages hereof




<PAGE>   2


                                TABLE OF CONTENTS


<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>            <C>                                                          <C>

                                    ARTICLE 1
                                   DEFINITIONS

SECTION 1.01.  Definitions.....................................................1

                                    ARTICLE 2
                         PURCHASE AND SALE OF SECURITIES

SECTION 2.01.  Commitments to Purchase.........................................4
SECTION 2.02.  The Closings....................................................5

                                    ARTICLE 3
                         REPRESENTATIONS AND WARRANTIES

SECTION 3.01.  Organization, Standing, etc.....................................6
SECTION 3.02.  Authorization; Noncontravention.................................6
SECTION 3.03.  Binding Effect..................................................6
SECTION 3.04.  Capitalization..................................................6
SECTION 3.05.  Litigation, Proceedings; No Defaults............................8
SECTION 3.06.  Investment Company..............................................8
SECTION 3.07.  Governmental Regulation.........................................8
SECTION 3.08.  Solicitation; Access to Information.............................8
SECTION 3.09.  Qualified Small Business........................................9
SECTION 3.10.  Small Business Concern..........................................9

                                    ARTICLE 4
                  REPRESENTATIONS AND WARRANTIES OF PURCHASERS

SECTION 4.01.  Private Placement...............................................9
SECTION 4.02.  Authority; No Other Action.....................................10
SECTION 4.03.  Margin Compliance..............................................11
SECTION 4.04.  Source of Funds................................................11

                                    ARTICLE 5
                         CONDITIONS PRECEDENT TO CLOSING

SECTION 5.01.  Conditions to Purchaser's Obligations..........................11
SECTION 5.02.  Conditions to Issuer's Obligations.............................13
</TABLE>



<PAGE>   3

<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>            <C>                                                          <C>
                                    ARTICLE 6
                                    COVENANTS

SECTION 6.01.  Incorporation of Affirmative Covenants
                    from the Credit Agreement ................................13
SECTION 6.02.  Incorporation of Negative Covenants
                    from the Credit Agreement ................................13
SECTION 6.03.  Furnishing of Information......................................13
SECTION 6.04.  Use of Proceeds................................................14
SECTION 6.05.  Notice of Shareholder Meetings.................................14
SECTION 6.06.  Capitalization.................................................14
SECTION 6.07.  Qualified Small Business.......................................14
SECTION 6.08.  Small Business Administration Matters..........................15
SECTION 6.09.  Regulatory Compliance Cooperation..............................15
SECTION 6.10.  Board Observer Rights..........................................16

                                    ARTICLE 7
                             LIMITATION ON TRANSFERS

SECTION 7.01.  Restrictions on Transfer.......................................16
SECTION 7.02.  Restrictive Legends............................................17
SECTION 7.03.  Notice of Proposed Transfers...................................17

                                    ARTICLE 8
                            CONVERSION OF SECURITIES

SECTION 8.01. Right to Convert Securities.....................................18
SECTION 8.02. Conversion of Securities........................................18
SECTION 8.03. Equity Securities...............................................18
SECTION 8.04. Registration Rights.............................................19

                                    ARTICLE 9
                                  MISCELLANEOUS

SECTION 9.01.  Notices........................................................19
SECTION 9.02.  No Waivers; Amendments.........................................20
SECTION 9.03.  Expenses; Documentary Taxes....................................20
SECTION 9.04.  Payment........................................................20
SECTION 9.05.  Termination....................................................20
SECTION 9.06.  Successors and Assigns.........................................20
</TABLE>



                                       ii

<PAGE>   4

<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>            <C>                                                          <C>
SECTION 9.07.  California Law.................................................21
SECTION 9.08.  Counterparts; Effectiveness....................................21
SECTION 9.09.  Entire Agreement...............................................21
</TABLE>

Schedule I     --     Small Business Investment Companies
Schedule II    --     Use of Proceeds

Exhibit A      --     Form of Senior Convertible Floating Rate Bridge Note
Exhibit B      --     Certificate of Designation
Exhibit C      --     Form of Warrant
Exhibit D      --     Form of Security Agreement


                                      iii

<PAGE>   5

                          SECURITIES PURCHASE AGREEMENT

        AGREEMENT dated as of May 20, 1999 among Cardiac Pathways Corporation, a
Delaware corporation (the "Issuer"), and the Purchasers listed on the signature
pages hereof (the "Purchasers").

        The parties hereto agree as follows:


                                    ARTICLE 1
                                   DEFINITIONS

        SECTION 1.01. Definitions. (a) Terms defined in the Credit Agreement
referred to below and not otherwise defined herein have, as used herein, the
respective meanings provided for therein.

        (b) The following additional terms, as used herein, have the following
meanings:

        "Affiliate", as applied to any Person, means any other Person directly
or indirectly controlling, controlled by, or under common control with, that
Person. For the purposes of this definition, "control" (including, with
correlative meanings, the terms "controlling", "controlled by" and "under common
control with"), as applied to any Person, means the possession, directly or
indirectly, of the power to direct or cause the direction of the management and
policies of that Person, whether through the ownership of voting securities, by
contract or otherwise.

        "Agreement" means this Agreement, as the same may be amended from time
to time.

        "BAV" means BankAmerica Ventures, a California corporation.

        "Bridge Securities" means the Issuer's Senior Convertible Floating Rate
Bridge Notes substantially in the form set forth in Exhibit A hereto.

        "Business Day" means any day except a Saturday, Sunday or other day on
which commercial banks in San Francisco and the City of New York are authorized
by law to close.



<PAGE>   6


        "Certificate of Designation" means the Certificate of Designation of the
Issuer substantially in the form of Exhibit B hereto, setting forth the terms of
the Preferred Stock.

        "Closing" and "Closing Date" have the meanings set forth in Section
2.02(a).

        "Collateral Agent" means BankAmerica Ventures as collateral agent under
the Collateral Documents.

        "Collateral Documents" means the Security Agreement and any other
agreement pursuant to which the Issuer or any of its Subsidiaries provides a
Lien on its assets in favor of the Collateral Agent for the benefit of the
Purchasers, and all supplementary assignments, security agreements, pledge
agreements, acknowledgments or other documents delivered or to be delivered
pursuant to the terms hereof or of any Collateral Document.

        "Code" means the Internal Revenue Code of 1986, as amended, and the
regulations thereunder.

        "Commission" means the Securities and Exchange Commission.

        "Common Stock" means the common stock of the Issuer, par value $.001 per
share.

        "Credit Agreement" means the Loan and Security Agreement dated as of May
15, 1998, between the Issuer, and Silicon Valley Bank, together with the related
documents thereto, including without limitation any security documents, in each
case as in effect on May 17, 1999.

        "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time.

        "Exchange Act" means the Securities Exchange Act of 1934, as amended.

        "Financing Documents" means this Agreement, the Bridge Securities and
the Collateral Documents.

        "Issuer" has the meaning set forth in the first paragraph of this
Agreement.

        "Issuer's Counsel" means Wilson Sonsini Goodrich & Rosati.



                                        2

<PAGE>   7

        "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest or encumbrance of any kind in respect of such asset.
For the purposes of this Agreement, any Person shall be deemed to own subject to
any Lien any asset that it has acquired or holds subject to the interest of a
vendor or lessor under any conditional sale agreement, capital lease or other
title retention agreement relating to such asset.

        "MSVP" means the collective reference to Morgan Stanley Venture Partners
III, L.P., Morgan Stanley Venture Investors III, L.P. and The Morgan Stanley
Venture Partners Entrepreneur Fund, L.P., each a Delaware limited partnership.

        "Other Financing Documents" means the Preferred Stock Purchase
Agreement, the Registration Rights Agreement and the Voting Agreement.

        "Permitted Transferee" means a Person that is an Affiliate of a
Purchaser (or, with respect to any Purchaser that is a trust, a successor trust,
Affiliate, or beneficiary thereof) and to which such Purchaser transfers Bridge
Securities.

        "Person" means an individual or a corporation, partnership, limited
liability company, association, trust, or any other entity or organization,
including a government or political subdivision or an agency or instrumentality
thereof.

        "Preferred Stock" means the Series B Convertible Preferred Stock of the
Issuer as set forth in the Certificate of Designation.

        "Preferred Stock Purchase Agreement" means the Series B Convertible
Preferred Stock Purchase Agreement dated as of May 20, 1999 among the Issuer and
the purchasers listed therein, as the same may be amended from time to time.

        "Purchaser" means the Purchaser or Purchasers listed on the signature
pages hereto together with any Permitted Transferee.

        "Regulation D" has the meaning set forth in Section 3.08 hereof.

        "Registration Rights Agreement" means the Registration Rights Agreement
dated as of May 20, 1999 among the Issuer and the holders listed therein, as the
same may be amended from time to time.

        "Required Purchasers" means at any time prior to the Closing Date,
Purchasers who have agreed to purchase, or, at any time after the Closing Date,
holders of more than, 50% of the aggregate principal amount of the Bridge
Securities.



                                        3
<PAGE>   8

        "Securities" means the Bridge Securities and the Preferred Stock
issuable upon conversion of the Bridge Securities.

        "Securities Act" means the Securities Act of 1933, as amended.

        "Security Agreement" means the Security Agreement dated as of May 20,
1999 between the Issuer and the Collateral Agent, substantially in the form of
Exhibit D.

        "Subsidiary" means, with respect to any Person, any corporation or other
entity of which a majority of the capital stock or other ownership interests
having ordinary voting power to elect a majority of the board of directors or
other persons performing similar functions are at the time directly or
indirectly owned by such Person.

        "SWIB" means State of Wisconsin Investment Board.

        "Transfer" means any disposition of Securities that would constitute a
sale thereof under the Securities Act.

        "Voting Agreement" means the Voting Agreement dated as of May 20, 1999
between the Issuer and the stockholder listed therein, as the same may be
amended from time to time.

        "Warrant" means warrants exercisable for shares of Preferred Stock,
substantially in the form of Exhibit C hereto.

        "Warrant Purchase Price" means $1.00.

                                    ARTICLE 2
                         PURCHASE AND SALE OF SECURITIES

        SECTION 2.01. Commitments to Purchase. Upon the basis of the
representations and warranties herein contained of each Purchaser, the Issuer
agrees to issue and sell to each Purchaser listed on the signature pages hereto
and each Purchaser, upon the basis of the representations and warranties herein
contained, but subject to the terms and conditions hereinafter stated, agrees
severally but not jointly, to purchase from the Issuer on each Closing Date the
Bridge Securities in the principal amount and at the price as is set forth below
such Purchaser's name on the signature pages hereof in respect of such Closing
Date.



                                        4

<PAGE>   9

        SECTION 2.02. The Closings. (a) The purchases and sales of the
Securities will take place at two closings (individually, a "Closing") at the
offices of Davis Polk & Wardwell, or at such other location as the Issuer and
the Purchasers shall agree. The initial Closing shall be held on a date as soon
as practicable after all conditions to the obligation of the Purchasers to
purchase the Securities hereunder specified in Section 5.01(a)(i) have been
fulfilled or waived. The second closing (if any) shall be held on a date as soon
as practicable after all considerations to the obligations of the Purchasers to
purchase the Securities hereunder specified in Section 5.01(b) have been
fulfilled or waived. The Issuer shall notify each of the Purchasers of the date
and time of the initial Closing (and the second Closing) not less than two
Business Days prior to such date (or within such other time period as the
parties mutually agree), and each Closing shall occur on such date or such other
date as the parties hereto agree. Such notice shall also specify the principal
amount and purchase price of the Bridge Securities to be purchased by such
Purchaser at such Closing. The maximum principal amount of Bridge Securities to
be purchased by each Purchaser hereunder at each of the Closings shall be as set
forth on the signature pages hereof, and the price of all Bridge Securities
purchased hereunder shall be the same as that set forth on the signature pages
hereof. The date and time of each Closing is referred to herein as the "Closing
Date".

        (b) On each Closing Date, each Purchaser shall deliver to the Issuer, by
wire transfer to the account number of the Issuer listed on the signature pages
hereof in immediately available funds or by federal funds check, an amount equal
to the aggregate purchase price of the Bridge Securities being purchased by such
Purchaser from the Issuer on such Closing Date.

        (c) At each Closing, the Issuer shall deliver to each Purchaser, against
payment of the purchase price therefor, (i) one or more certificates evidencing
the Bridge Securities being purchased by such Purchaser at such Closing, in
definitive form and registered in such name or names, and in such denominations,
as such Purchaser shall request not later than one Business Day prior to the
applicable Closing Date. The authorized minimum denomination for the Bridge
Securities upon original issuance thereof is $250,000 and any larger multiple of
$100,000.

        (d) The second Closing shall be held not later than the date specified
by the Required Purchasers in the notice delivered to the Issuer pursuant to
Section 5.01(b).



                                        5

<PAGE>   10

                                    ARTICLE 3
                         REPRESENTATIONS AND WARRANTIES

        The Issuer represents and warrants to each Purchaser as follows:

        SECTION 3.01. Organization, Standing, etc. The Issuer is a corporation
duly incorporated, validly existing and in good standing under the laws of the
State of Delaware and has all corporate powers and all material governmental
licenses, authorizations, consents and approvals required to carry on its
business as conducted to date.

        SECTION 3.02. Authorization; Noncontravention. The execution, delivery
and performance by the Issuer of this Agreement and the Bridge Securities are
within the Issuer's corporate powers, have been duly authorized by all necessary
corporate action, require no action by or in respect of, or filing with, any
governmental body, agency or official other than such actions or filings which
have been taken or made or will be taken or made on or prior to the time
required under any such agreement (except the failure either singly or in the
aggregate to take such actions and make such filings which would not have any
bearing on the validity and enforceability of this Agreement) and do not
contravene or constitute a default under (i) any provision of applicable law or
regulation (including Regulations T, U and X of the Board of Governors of the
Federal Reserve System (the "Federal Reserve Board")), (ii) the certificate of
incorporation or bylaws of the Issuer or (iii) any material agreement, judgment,
injunction, order, decree or other instrument binding upon the Issuer or result
in the creation or imposition of any Lien on any asset of the Issuer or any of
its Subsidiaries.

        SECTION 3.03. Binding Effect. This Agreement has been duly executed and
delivered by the Issuer and constitutes a valid and binding agreement of the
Issuer (except to the extent that rights to indemnity in respect of liabilities
under federal and state securities laws provided in the Agreement may be limited
under such laws), and the Bridge Securities, when executed and delivered by the
Issuer in accordance with this Agreement, will constitute valid and binding
obligations of the Issuer.

        SECTION 3.04. Capitalization. (a) The authorized capital stock of the
Issuer consists of 30,000,000 shares of Common Stock, $.001 par value per share,
and 5,000,000 shares of Preferred Stock, $.001 par value per share, of which
50,000 shares have been designated Series A Participating Preferred Stock,
30,000 shares have been designated Series B Convertible Preferred Stock and
4,920,000 are undesignated. As of the date hereof, (i) 10,038,578 shares of
Common Stock, all of which are validly issued, fully paid and nonassessable, no



                                        6

<PAGE>   11

shares of Series A Participating Preferred Stock and no shares of Series B
Convertible Preferred Stock were issued and outstanding; (ii) no shares were
held in treasury by the Issuer or by any subsidiaries of the Issuer; (iii)
2,866,629 shares of Common Stock were reserved for issuance under the Issuer's
stock plans (including (A) 1,442,440 shares of Common Stock reserved for
issuance under the Issuer's 1991 Stock Option Plan, 1,067,591 shares of which
were subject to outstanding options and 374,849 of which were reserved for
future grants, (B) 60,000 shares of Common Stock were reserved for issuance
under the Issuer's 1996 Director Option Plan, 33,000 shares of which were
subject to outstanding options and 27,000 of which were reserved for future
grants, (C) 400,000 shares of Common Stock were reserved for issuance under
the Issuer's 1998 Non- Statutory Stock Option Plan, 143,818 of which were
subject to outstanding options and 256,182 shares of which were available for
future grants, (D) 920,506 shares of Common Stock were reserved for issuance
under the Issuer's 1998 Employee Stock Purchase Plan, 40,506 shares of which
were available for future purchase in fiscal 1999 and 880,000 of which may be
purchased in maximum amounts of 200,000 shares per fiscal year commencing July
1, 1999 and (E) 43,683 shares were subject to an outstanding nonstatutory
option granted outside of the plans); and (iv) 143,141 shares of Common Stock
and related Preferred Stock Purchase Rights were subject to outstanding
warrants to purchase such shares. All shares of the Issuer's Common Stock
subject to issuance as specified above, on the terms and conditions specified
in the instruments pursuant to which they are issuable, shall be duly
authorized, validly issued, fully paid and nonassessable. There are no
obligations, contingent or otherwise, of the Issuer or any of its subsidiaries
to repurchase, redeem or otherwise acquire any shares of the Issuer's capital
stock or the capital stock of any of the Issuer's subsidiaries or make any
investment (in the form of a loan, capital contribution or otherwise) in any
such subsidiary or any other entity other than as contemplated by this
Agreement. All of the outstanding shares of capital stock of each Subsidiary
of the Issuer are duly authorized, validly issued, fully paid and
nonassessable, and all such shares (other than directors' qualifying shares)
are owned by the Issuer or another subsidiary of the Issuer free and clear of
all security interests, liens, claims, pledges, agreements, limitations on the
Issuer's voting rights, charges or other encumbrances of any nature. The
Common Stock is quoted on the Nasdaq National Market.

        (b) The Preferred Stock, when issued and delivered to the Purchasers in
accordance with this Agreement, shall be entitled to the benefits set forth in
the certificate of incorporation of the Issuer and the Certificate of
Designation. Upon any conversion of Bridge Securities into Preferred Stock in
accordance with this Agreement, all of such shares shall be validly issued,
fully paid and nonassessable and free and clear of any Lien or other right or
claim. The issuance of such shares of Preferred Stock is not subject to any
preemptive or similar rights and holders of



                                        7

<PAGE>   12

such shares of Preferred Stock will not be entitled to any preemptive or
similar rights. Except as set forth in Section 3.04(a) and as provided in
Article 8, immediately following the initial Closing Date, the Issuer will
have outstanding no other shares of capital stock and no securities
convertible into or exchangeable for, or options or other rights to acquire
from the Issuer, or other obligations of the Issuer to issue, directly or
indirectly, any shares of capital stock of the Issuer.

        SECTION 3.05. Litigation, Proceedings; No Defaults. (a) There is no
action, suit or proceeding pending against, or to the best knowledge of the
Issuer threatened against or affecting, the Issuer or any of its Subsidiaries
before any court or arbitrator or any governmental body, agency or official
which could, with reasonable likelihood (individually or in the aggregate)
materially adversely affect the business, financial position, results of
operations or prospects of the Issuer and its Subsidiaries, taken as a whole, or
which in any manner draws into question the validity of this Agreement, the
Securities, or any of the other documents delivered or to be delivered by the
Issuer pursuant hereto or thereto.

        (b) The Issuer is not in violation of its certificate of incorporation
or bylaws or in violation, breach or default under any provision of applicable
law or regulation or of any agreement, judgment, injunction, order, decree or
other instrument to which it is a party or which is binding upon it, which
violation, breach or default (i) would affect the validity or enforceability of
this Agreement, the Securities or any other agreement, instrument or document
executed or to be executed by the Issuer pursuant hereto or thereto or (ii)
would (individually or in the aggregate) impair the ability of the Issuer to
perform in any material respect the obligations which it has under this
Agreement, the Securities, or any such other agreement, instrument or document.

        SECTION 3.06. Investment Company. The Issuer is not, and after giving
effect to the sale and issuance of the Bridge Securities (and any conversion
thereof into the Preferred Stock or other equity securities of the Issuer), will
not be, an "investment company" within the meaning of the Investment Company Act
of 1940, as amended.

        SECTION 3.07. Governmental Regulation. Except as required pursuant to
the Securities Act, the Exchange Act and state securities laws, the Issuer is
not subject to any Federal or state law or regulation limiting its ability to
issue and perform its obligations under the terms of the Securities.

        SECTION 3.08. Solicitation; Access to Information. (a) No form of
general solicitation or general advertising was used by the Issuer or, to the
best of its knowledge, any other Person acting on its behalf, in respect of the
Securities or in connection with the offer and sale of the Securities. Neither
the Issuer nor any



                                        8
<PAGE>   13


Person acting on behalf of the Issuer has, either directly or indirectly, sold
or offered for sale to any Person any of the Securities or any other similar
security of the Issuer except as contemplated by this Agreement.

        (b) The Issuer has not offered any Securities to any Person unless
immediately prior to making such offer the Issuer had reasonable grounds to
believe and did believe that such Person was an "Accredited investor" as defined
in Regulation D ("Regulation D") under the Securities Act, and, as of the date
hereof, the Issuer has no reason to believe that such Person is not an
"Accredited investor" as so defined.

        SECTION 3.09. Qualified Small Business. The Issuer is a "qualified small
business" within the meaning of Section 1202(d) of the Code as of the date
hereof. The Issuer further represents and warrants that, as of the date hereof,
it meets the "active business requirement" of Section 1202(e) of the Code and it
has made no "significant redemptions" within the meaning of Section
1202(c)(3)(B) of the Code.

        SECTION 3.10. Small Business Concern. The Issuer, together with its
"affiliates" (as that term is defined in Section 121.103 of Title 13 of the Code
of Federal Regulations (the "Federal Regulations")), is a "small business
concern" within the meaning of the Small Business Investment Act of 1958, as
amended (the "Small Business Act"), and Part 121 of Title 13 of the Federal
Regulations. The information delivered by the Issuer to each Purchaser on SBA
Forms 480, 652 and 1031 of the Small Business Administration (the "SBA")
delivered in connection herewith is accurate and complete. The Issuer is not
ineligible for financing by any SBIC Investor pursuant to Section 107.720 of
Title 13 of the Federal Regulations. The Issuer acknowledges that BankAmerica
Ventures is a Federal licensee under the Small Business Act.

                                    ARTICLE 4
                  REPRESENTATIONS AND WARRANTIES OF PURCHASERS

        Each Purchaser severally, and not jointly, hereby represents and
warrants to the Issuer as follows:

        SECTION 4.01. Private Placement. (a) Such Purchaser understands that (i)
the offering and sale of the Securities is intended to be exempt from
registration under the Securities Act pursuant to Section 4(2) of the Securities
Act, and (ii) there is no existing public or other market for the Securities and
there can



                                        9

<PAGE>   14


be no assurance that any Purchaser will be able to sell or dispose of such
Purchaser's Securities.

        (b) The Securities to be acquired by such Purchaser pursuant to this
Agreement are being acquired for its own account and without a view to the
public distribution of such Securities or any interest therein; provided that
each Purchaser shall have the right at all times to sell or otherwise dispose of
all or any part of the Securities so acquired by such Purchaser pursuant to a
registration, or exemption therefrom, under the Securities Act.

        (c) Such Purchaser is an "Accredited investor" as such term is defined
in Regulation D.

        (d) Such Purchaser is not a broker-dealer subject to Regulation T of the
Federal Reserve Board.

        (e) Such Purchaser has sufficient knowledge and experience in financial
and business matters so as to be capable of evaluating the merits and risks of
its investment in the Securities and such Purchaser is capable of bearing the
economic risks of such investment, including a complete loss of its investment
in the Securities.

        (f) Such Purchaser has been given the opportunity to ask questions of,
and receive answers from, the Issuer concerning the terms and conditions of the
Securities and other related matters. Each Purchaser further represents and
warrants to the Issuer that the Issuer has made available to such Purchaser or
its agents all documents and information relating to an investment in the
Securities requested by or on behalf of such Purchaser. In evaluating the
suitability of an investment in the Securities, the Purchaser has not relied
upon any other representations or other information (whether oral or written)
made by or on behalf of the Issuer other than as contemplated by the two
preceding sentences.

        SECTION 4.02. Authority; No Other Action. (a) The execution, delivery
and performance of this Agreement are within such Purchaser's powers (corporate
or otherwise) and have been duly authorized on its part by all requisite action
(corporate or otherwise).

        (b) No action by or in respect of, or filing with, any governmental
authority, agency or official is required for the execution, delivery and
performance of this Agreement by such Purchaser, other than a "control
certificate" to be filed with the SBA within 30 days of the initial Closing
Date.



                                       10

<PAGE>   15


        SECTION 4.03. Margin Compliance. Such Purchaser is not relying, directly
or indirectly, on any "margin stock" (as defined in Regulation U of the Federal
Reserve Board) as collateral for the Securities.

        SECTION 4.04. Source of Funds. If any part of the funds to be used to
purchase the Securities constitutes assets of any employee benefit plan within
the meaning of Section 3 of ERISA, such Securities are being purchased pursuant
to an available exemption from the provisions of Section 406 of ERISA and
Section 4975 of the Code.

                                    ARTICLE 5
                         CONDITIONS PRECEDENT TO CLOSING

        SECTION 5.01. Conditions to Purchaser's Obligations. (a) The obligation
of each Purchaser to purchase the Securities to be purchased by it hereunder on
each Closing Date is subject to the satisfaction, simultaneously with or prior
to such Closing Date, of the following conditions:

                (i) The representations and warranties of the Issuer contained
        herein shall be true and correct in all material respects on and as of
        such Closing Date as if made on and as of such date;

                (ii) Each of the Purchasers shall have received duly executed
        counterparts of each Financing Document and each Other Financing
        Document;

                (iii) No Event of Default (within the meaning of the Credit
        Agreement) shall have occurred and be continuing;

                (iv) The Collateral Agent shall have received all signed UCC
        financing statements reasonably requested by the Collateral Agent to
        perfect its security interests in the Collateral and evidence
        satisfactory to the Collateral Agent that arrangements satisfactory to
        it have been made for filing such UCC financing statements on or
        promptly after the Closing Date;

                (v) The Collateral Agent shall have received all signed UCC-3
        termination statements from Silicon Valley Bank together with a payoff
        letter in connection with the repayment of the loans outstanding under
        the Credit Agreement;



                                       11

<PAGE>   16

                (vi) Each of the Purchasers shall have received the Warrants to
        purchase the number of shares of Preferred Stock set forth below such
        Purchaser's name on the signature pages hereof and such Purchaser shall
        have paid to the Issuer the Warrant Purchase Price in respect thereof;

                (vii) The Issuer shall have performed and complied in all
        material respects with all covenants and agreements required by this
        Agreement to be performed or complied with by it at or prior to such
        Closing Date;

                (viii) Each of the Purchasers shall have received duly executed
        certificates representing the Bridge Securities being purchased by such
        Purchaser pursuant hereto;

                (ix) Such Purchaser's purchase of and payment for the Securities
        shall not be prohibited by any applicable law, court order or
        governmental regulation;

                (x) Each Purchaser shall have received a certificate dated such
        Closing Date signed by an executive officer of the Issuer to the effect
        set forth in subsections 5.01(a)(i) and 5.01(a)(iii);

                (xi) Each Purchaser shall have received an opinion, dated such
        Closing Date, of Issuer's Counsel, substantially in the form of Exhibit
        E hereto;

                (xii) The Purchasers shall have received all documents
        reasonably requested by the Purchasers relating to the existence of the
        Issuer, the corporate authority for entering into, and the validity of,
        this Agreement, the Bridge Securities and any other matters relevant
        hereto and thereto, all in form and substance reasonably satisfactory to
        the Purchasers; and

                (xiii) The Issuer shall have executed and delivered to the
        Purchasers a Size Status Declaration on SBA Form 480 and an Assurance of
        Compliance on SBA Form 652, and shall have provided to BAV, the
        information requested by the Purchasers necessary for the preparation by
        BAV of a Portfolio Financing Report on SBA Form 1031.

        (b) The obligation of each Purchaser to purchase the Securities to be
purchased by it hereunder on the second Closing Date is subject to the
satisfaction, at or prior to the second Closing Date, of the following
additional condition: The Required Purchasers shall have delivered a notice to
the Issuer requesting that the Issuer issue to each Purchaser Securities in the
amounts set



                                       12

<PAGE>   17


forth below such Purchaser's name on the signature pages hereof no later than
two Business Days after delivery of such notice.

        SECTION 5.02. Conditions to Issuer's Obligations. The obligations of the
Issuer to issue and sell the Securities pursuant to this Agreement on each
Closing Date to any Purchaser are subject to the satisfaction, at or prior to
such Closing Date, of the following conditions:

                (a) The representations and warranties of such Purchaser
        contained herein shall be true and correct in all material respects on
        and as of the Closing Date as if made on and as of such date;

                (b) Such Purchaser shall have performed and complied in all
        material respects with all agreements required by this Agreement to be
        performed or complied with by such Purchaser at or prior to such Closing
        Date; and

                (c) The issue and sale of the Securities by the Issuer shall not
        be prohibited by any applicable law, court order or governmental
        regulation.


                                    ARTICLE 6
                                    COVENANTS

        SECTION 6.01. Incorporation of Affirmative Covenants from the Credit
Agreement. The Issuer shall, and (where contemplated by the Credit Agreement)
shall cause each of its Subsidiaries to, comply with the affirmative covenants
set forth in Article 6 of the Credit Agreement other than those set forth in
Sections 6.09, 6.10 and 6.11 thereof.

        SECTION 6.02. Incorporation of Negative Covenants from the Credit
Agreement. The Issuer shall not, nor shall it permit its Subsidiaries to violate
any of the negative covenants set forth in Article 7 of the Credit Agreement.

        SECTION 6.03. Furnishing of Information. As long as any Purchaser or any
Permitted Transferee owns any Securities, the Issuer will furnish to such
Purchaser any documents filed by the Issuer pursuant to Section 13, 14 or 15(d)
of the Exchange Act and all annual, quarterly or other reports furnished to the
Issuer's public securityholders and such additional information regarding the
financial position or business of the Issuer and its Subsidiaries as such
Purchaser may reasonably request; provided that if the Issuer is not subject to
the



                                       13

<PAGE>   18

requirements of Section 13, 14 or 15(d) of the Exchange Act, the Issuer will
promptly furnish to such Purchaser:

                (a) As soon as available and in any event within 90 days after
        the end of each fiscal year of the Issuer, audited consolidated
        financial statements of the Issuer for such fiscal year prepared in
        accordance with GAAP, consistently applied, setting forth in comparative
        form the figures for the previous fiscal year, all reported on in a
        manner acceptable to the Commission by an independent public accountant
        of nationally recognized standing, and accompanied by a "Management's
        Discussion and Analysis of Financial Condition and Results of
        Operations" comparable to that which the Issuer would have been required
        to include in reports filed under Section 13 of the Exchange Act.

                (b) As soon as available and in any event within 45 days after
        the end of each of the first three quarters of each fiscal year of the
        Issuer, unaudited consolidated financial statements of the Issuer for
        such fiscal quarter and for the portion of the Issuer's fiscal year
        ended at the end of such quarter, setting forth in each case in
        comparative form the figures for the corresponding quarter and the
        corresponding portion of the Issuer's previous fiscal year, all
        certified (subject to normal year-end audit adjustments) as to fairness
        of presentation, generally accepted accounting principles and
        consistency by the principal financial and accounting officers of the
        Issuer.

        SECTION 6.04. Use of Proceeds. The proceeds from the issuance and sale
of the Securities by the Issuer pursuant to this Agreement will be used solely
to general corporate purposes in the ordinary course of business as listed on
Schedule II hereto.

        SECTION 6.05. Notice of Shareholder Meetings. The Issuer shall not hold
any meeting of its shareholders to approve the Transaction unless it has given
each Purchaser notice thereof at least 5 Business Days prior to the record date
for shareholders eligible to vote at such shareholder meeting.

        SECTION 6.06. Capitalization. The Issuer shall not issue any capital
stock or otherwise permit any change to its capitalization from that described
in Section 3.04 hereof except as contemplated by the Other Financing Documents.

        SECTION 6.07. Qualified Small Business. The Issuer will use its best
efforts to comply with the reporting and recordkeeping requirements of Section
1202 of the Code, any regulations promulgated thereunder and any similar state
laws and regulations. The Issuer further covenants to submit to its



                                       14

<PAGE>   19


shareholders and to state and federal taxation authorities such forms and
filings as may be required to document such compliance, including the California
Franchise Tax Board Form 3565, Small Business Stock Questionnaire, with its
franchise or income tax return for the current income year.

        SECTION 6.08. Small Business Administration Matters.

                (a) The Issuer will provide to each Purchaser identified as a
licensed Small Business Investment Company on Schedule I hereto (each an "SBIC
Investor"), and to the Small Business Administration (the "SBA"), reasonable
access to the Issuer's books and records for the purpose of confirming the use
of proceeds by the Issuer.

                (b) For a period of one year following the Closing, the Issuer
will not change the nature of its business activity if such change would render
the Issuer "ineligible" as provided in Section 107.720 of Title 13 of the
Federal Regulations.

                (c) So long as any SBIC Investor holds any securities of the
Issuer, the Issuer will at all times comply with the non-discrimination
requirements of Sections 112, 113 and 117 of Title 13 of the Federal
Regulations.

                (d) Within 45 days after the end of each fiscal year of the
Issuer, and at such other times as an SBIC Investor may reasonably request in
writing to the Issuer, the Issuer will deliver to such SBIC Investor a written
assessment in form and substance reasonably satisfactory to such SIBC Investor
as to the economic impact of such SBIC Investor's financing of the Issuer,
specifying the full-time equivalent jobs created or retained in connection with
such investment, and the impact of such financing on the Issuer's business in
terms of profits and with respect to taxes paid by the Issuer and its employees.
The Issuer will promptly provide each SBIC Investor who so requests in writing
to the Issuer, specifying in such written request the nature of such required
information in reasonable detail, such information as such SBIC Investor
requests, in order to permit such SBIC Investor to comply with such SBIC
Investor's obligations under the Small Business Act of 1958, as amended (the
"Small Business Act"), and the regulations promulgated thereunder and related
thereto. Any submission of financial information pursuant to this Section
6.08(d) shall be under cover of a certificate executed by the Issuer's
president, chief executive officer, chief financial officer or treasurer,
certifying that such information (i) relates to the Issuer, (ii) to the best of
the Issuer's knowledge is accurate and (iii) if applicable, has been audited by
the Issuer's independent auditors.

        SECTION 6.09. Regulatory Compliance Cooperation. In the event that any
SBIC Investor determines that it has a Regulatory Problem (as defined below), it



                                       15

<PAGE>   20

shall have the right to transfer its Securities in compliance with applicable
state and federal securities laws, but without regard to any other restrictions
on transfer set forth in this Agreement (provided that the transferee agrees to
become a party to each such agreement), and the Issuer shall take all such
actions as are reasonably requested by such SBIC Investor in order to (i)
effectuate and facilitate any transfer by it of any securities of the Issuer
then held by it to any person designated by such SBIC Investor, (ii) permit such
SBIC Investor (or any of its affiliates) to exchange all or any portion of any
voting security then held by it on a share-for-share basis for shares of a
nonvoting security of the Issuer, which nonvoting security shall be identical in
all respects to the voting security exchanged for it, except that it shall be
nonvoting and shall be convertible into a voting security on such terms as are
requested by it in light of regulatory considerations then prevailing, and (iii)
amend this Agreement, as amended from time to time, to effectuate and reflect
the foregoing. The parties to this Agreement agree to vote all of the Issuer's
securities held by them in favor of such amendments and actions. For purposes of
this Agreement, a "Regulatory Problem" means any set of facts or circumstances
wherein it has been asserted by any governmental regulatory agency that an SBIC
Investor is not entitled to hold, or exercise any significant right with respect
to, the underlying securities into which the Bridge Securities are convertible.

        SECTION 6.10. Board Observer Rights. The Issuer shall invite a
representative of each of BAV, MSDWV and SWIB to attend all meetings of its
Board of Directors in a nonvoting observer capacity and, in this respect, shall
give each such representative copies of all notices, minutes, consents, and
other materials (the "Board Materials") that it provides to its directors at the
same time as such Board Materials are provided to any of its directors;
provided, however, that the Issuer may withhold any information and exclude any
such representative of BAV, MSDWV and SWIB from any meeting or portion thereof
if the disclosure of such material or discussion, in the opinion of counsel to
the Issuer, would jeopardize the Issuer's attorney client privilege. The right
granted to each of BAV, MSDWV and SWIB to attend meetings of the Issuer's Board
of Directors and to receive Board Materials shall not be assignable.

                                    ARTICLE 7
                             LIMITATION ON TRANSFERS

        SECTION 7.01. Restrictions on Transfer. From and after the Closing Date
and their respective dates of issuance, as the case may be, neither the
Securities, nor any interest therein shall be transferable except that from and
after October



                                       16
<PAGE>   21


31, 1999, such Securities or interests therein shall be transferable upon the
conditions specified in Sections 7.02 and 7.03, which conditions are intended to
ensure compliance with the provisions of the Securities Act in respect of the
Transfer of any of the Securities, or any interest therein. Each Purchaser will
cause any proposed transferee of the Securities (or any interest therein) held
by it to agree to take and hold such Securities (or any interest therein)
subject to the provisions and upon the conditions specified in Sections 7.02 and
7.03.

        SECTION 7.02. Restrictive Legends. (a) Each certificate for Securities
issued to a Purchaser or to a subsequent transferee shall (unless otherwise
permitted by the provisions of Section 7.02(b) or Section 7.03 include a legend
in substantially the following form:

        THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED, OR ANY STATE SECURITIES LAWS AND MAY NOT BE OFFERED OR SOLD EXCEPT
IN COMPLIANCE THEREWITH. THIS SECURITY ALSO IS SUBJECT TO ADDITIONAL
RESTRICTIONS ON TRANSFER AS SET FORTH IN THE SECURITIES PURCHASE AGREEMENT DATED
AS OF MAY 20, 1999, A COPY OF WHICH MAY BE OBTAINED FROM CARDIAC PATHWAYS
CORPORATION.

                (b) Subject to Section 7.03, any holders of Securities
registered pursuant to the Securities Act and qualified under applicable state
securities laws may exchange such Securities, as the case may be, upon transfer
for new securities that shall not bear the legend set forth in Section 7.02(a).

        SECTION 7.03. Notice of Proposed Transfers. At least ten Business Days
prior to any proposed Transfer (other than transfers by MSVP or BAV of some or
all of the Securities (or interests therein) purchased by it hereunder pursuant
to participation agreements or secondary note purchase agreements) of any
Securities, the holder thereof shall give written notice to the Issuer of such
holder's intention to effect such Transfer, setting forth the manner and
circumstances of the proposed Transfer in reasonable detail. Such proposed
Transfer (other than transfers to Permitted Transferees) may be effected only if
the Issuer shall have received such notice of Transfer accompanied by (i) an
opinion of counsel reasonably satisfactory to the Issuer, addressed to the
Issuer, to the effect that the proposed Transfer of the Securities may be
effected without registration under the Securities Act, (ii) representation
letters in form and substance reasonably satisfactory to the Issuer to ensure
compliance with the provisions of the Securities Act, and (iii) letters in form
and substance reasonably satisfactory to the Issuer from each such transferee
stating such transferee's agreement to be bound by the terms of this Article 7.
Each certificate evidencing



                                       17

<PAGE>   22

the Securities transferred as above provided shall bear the legend set forth in
Section 7.02(a) except that such certificate shall not bear such legend if the
opinion of counsel referred to above is to the further effect that neither such
legend nor the restrictions on Transfer in Sections 7.02 and 7.03 are required
in order to ensure compliance with the provisions of the Securities Act.


                                    ARTICLE 8
                            CONVERSION OF SECURITIES

        SECTION 8.01. Right to Convert Securities. Subject to and upon
compliance with the provisions of this Article 8, all outstanding Bridge
Securities are convertible at the option of the Required Purchasers, at any time
through the close of business on May 20, 2000, into fully paid and nonassessable
shares of Preferred Stock in accordance with the terms of the Preferred Stock
Purchase Agreement; provided that prior to the satisfaction of any stockholder
approval requirement of the Nasdaq National Market with respect to the issuance
of the Bridge Securities, under no circumstance shall the Required Purchasers be
permitted to convert the Bridge Securities into Preferred Stock.

        SECTION 8.02. Conversion of Securities. (a) In order to convert the
Securities, the Required Purchasers shall deliver to the Issuer an irrevocable
Notice of Conversion setting forth the principal amount of Securities
outstanding as of such date, the accrued but unpaid interest thereon as of such
date, together with the name or names, if other than any Purchaser, in which the
shares of Preferred Stock should be issued upon conversion and surrender to the
Issuer of all the outstanding Securities, duly endorsed or assigned to the
Issuer or in blank. The number of shares of Preferred Stock to be delivered upon
conversion of the Securities shall be determined by reference to the number
obtained by dividing (i) the aggregate principal amount of all the Securities,
plus accrued but unpaid interest thereon as of the Conversion Date (as defined
below) by (ii) the "Per Share Purchase Price" of the Preferred Stock determined
in accordance with the Preferred Stock Purchase Agreement.

        (b) The Issuer's delivery upon conversion of the fixed number of shares
of Preferred Stock into which the Securities are convertible (together with the
cash payment, if any, in lieu of fractional shares) shall be deemed to satisfy
the Issuer's obligation to pay the principal amount at maturity of the portion
of Securities so converted and any unpaid interest accrued on such Securities at
the time of such conversion.



                                       18

<PAGE>   23

        SECTION 8.03. Equity Securities. (a) The Issuer shall reserve, free from
pre-emptive rights, out of its authorized but unissued shares, sufficient shares
to provide for the conversion of the Securities from time to time as such
Securities are presented for conversion.

                (b) If any shares of Preferred Stock to be reserved for the
purpose of delivery upon conversion of Securities hereunder require registration
with or approval of any governmental authority under any Federal or state law
before such shares may be validly issued or delivered upon conversion, then the
Issuer covenants that it will in good faith and as expeditiously as possible
endeavor to secure such registration or approval, as the case may be, provided,
however, that nothing in this Section 8.03 shall be deemed to affect in any way
the obligations of the Issuer to convert Securities into Preferred Stock as
provided in this Article 8.

                (c) The Issuer covenants that all shares of Preferred Stock
which may be issued upon conversion of Securities will upon issue be fully paid
and non-assessable by the Issuer and free of pre-emptive rights.

        SECTION 8.04. Registration Rights. The Issuer agrees that each Purchaser
shall be entitled to the benefits of the Registration Rights Agreement with
respect to any Preferred Stock issued upon conversion of Bridge Securities and
that any Preferred Stock received by such Purchaser upon conversion of
Securities pursuant to this Article 8 shall be deemed to be "Registrable
Securities" within the meaning of the Registration Rights Agreement.

                                    ARTICLE 9
                                  MISCELLANEOUS

        SECTION 9.01. Notices. All notices, requests and other communications to
any party hereunder shall be in writing (including telex, telecopier or similar
writing) and shall be given to such party at its address, telex or telecopier
number set forth on the signature pages hereof, or such other address, telex or
telecopier number as such party may hereinafter specify for the purpose to the
party giving such notice. Each such notice, request or other communication shall
be effective (i) if given by telex or telecopy, when such telex or telecopy is
transmitted to the telex or telecopy number specified in this Section and the
appropriate answerback is received or, (ii) if given by mail, 72 hours after
such communication is deposited in the mails with first class postage prepaid,
addressed as aforesaid or,



                                       19

<PAGE>   24

(iii) if given by any other means, when delivered at the address specified in
this Section 9.01.

        SECTION 9.02. No Waivers; Amendments. (a) No failure or delay on the
part of any party in exercising any right, power or privilege hereunder shall
operate as a waiver thereof, nor shall any single or partial exercise thereof
preclude any other or further exercise thereof or the exercise of any other
right, power or privilege. The rights and remedies herein provided shall be
cumulative and not exclusive of any rights or remedies provided by law.

                (b) Any provision of this Agreement may be amended or waived if,
but only if, such amendment or waiver is in writing and is signed by the Issuer
and the Required Purchasers; provided that no such amendment or waiver shall,
unless signed by all of the Purchasers, (i) change the amount or terms of any
Bridge Securities to be purchased by any Purchaser pursuant to this Agreement,
(ii) extend the period of time during which the Purchasers shall be obligated to
purchase Bridge Securities pursuant to this Agreement or (iii) change the number
of Purchasers that shall be required for the Purchasers or any of them to take
any action under this Section 9.02(b) or any other provision of this Agreement.

        SECTION 9.03. Expenses; Documentary Taxes. The Issuer shall pay all
reasonable fees and disbursements of Special Counsel in connection with the
purchase and sale of the Bridge Securities as contemplated by this Agreement or
any amendments thereto. In addition, the Issuer shall pay any and all stamp,
transfer and other similar taxes payable or determined to be payable in
connection with the execution and delivery of this Agreement or any Securities
or the issuance of the Securities.

        SECTION 9.04. Payment. The Issuer agrees that, so long as any Purchaser
hereunder shall own any Securities purchased by it from the Issuer hereunder,
the Issuer will make payments to such Purchaser of all amounts due thereon by
wire transfer by 1:00 p.m. Eastern Time, on the date of payment to such
Purchaser's account as specified beneath such Purchaser's name on the signature
pages hereof or to such other account or in such other similar manner as such
Purchaser may designate to the Issuer in writing.

        SECTION 9.05. Termination. Required Purchasers, on behalf of all the
Purchasers at 5:00 p.m. on May 20, 1999, unless the conditions to the Purchasers
obligations hereunder are satisfied or waived by such date.

        SECTION 9.06. Successors and Assigns. (a) Except as expressly provided
in this Agreement, the rights and obligations of any Purchaser under this



                                       20

<PAGE>   25


Agreement may not be assigned to any Person and this Agreement shall not be
construed so as to confer any right or benefit upon any Person other than the
parties to this Agreement, and their respective successors and assigns. This
Agreement shall be binding upon the Issuer and each Purchaser and their
respective successors and assigns. Notwithstanding the foregoing, each of BAV
and MSVP may sell interests in the Securities pursuant to participation
agreements or secondary note purchase agreements and the purchasers of such
interests shall be entitled to the rights of a Purchaser hereunder to the extent
provided in such participation agreements/secondary note purchase agreements.

                (b) All provisions hereunder purporting to give rights to the
Purchasers shall extend to and include those entities receiving beneficial
interest of the Securities at such Closing Date.

        SECTION 9.07. California Law. This Agreement shall be construed in
accordance with and governed by the laws of the State of California. Each of the
parties hereto agrees to submit to the jurisdiction of the courts of the State
of New York in any action or proceeding arising out of or relating to this
Agreement.

        SECTION 9.08. Counterparts; Effectiveness. This Agreement may be
executed in any number of counterparts each of which shall be an original with
the same effect as if the signatures thereto and hereto were upon the same
instrument. This Agreement shall become effective when the Issuer shall have
executed counterparts hereof and received counterparts hereof signed by all of
the parties hereto.

        SECTION 9.09. Entire Agreement. This Agreement constitutes the entire
agreement and understanding among the parties hereto and supersedes any and all
prior agreements and understandings, written or oral, relating to the subject
matter hereof.



                                       21

<PAGE>   26

        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officers (or, in the case of
parties that are not corporations, other authorized persons), as of the date
first above written.

                                        CARDIAC PATHWAYS CORPORATION



                                        By: /s/ William N. Starling
                                           -------------------------------------
                                           Title:   President and CEO
                                           Address: 995 Benecia Avenue
                                                    Sunnyvale, CA 94086

                                           Account No.:



<PAGE>   27


PURCHASERS:

MORGAN STANLEY VENTURE PARTNERS III, L.P.

By:   Morgan Stanley Venture Partners III, L.L.C.
      its General Partner

By:   Morgan Stanley Venture Capital III, Inc.,
      its Institutional Managing Member


By: /s/ Fazle Husain
    ---------------------------------------------
    Title:   General Partner
    Address: 1221 Avenue of the Americas
             New York, New York 10020
    Fax:     (212) 762-8424

        The Purchaser represents and warrants that it is one or more of the
following (please check appropriate box)

        [ ]     (1)     A bank as defined in Section 3(a)(2) of the Securities
Act, acting in either its individual or fiduciary capacity.

        [ ]     (2)     An insurance company as defined in Section 2(13) of the
Securities Act.

        [ ]     (3)     An investment company registered under the Investment
Company Act of 1940.

        [ ]     (4)     A business development company as defined in Section
2(a)( 48) of the Investment Company Act of 1940.

        [ ]     (5)     A Small Business Investment Company licensed by the U.S.
Small Business Administration under Section 301(c) or (d) of the Small Business
Investment Act of 1958.

        [ ]     (6)     An employee benefit plan within the meaning of Title I
of the Employee Retirement Income Security Act of 1974 and (i) the decision to
make an investment in the Securities was made by a plan fiduciary, as defined in
Section 3(21) of such Act, which fiduciary is either a bank, insurance company
or registered investment advisor, or such plan has total assets in excess of
$5,000,000.

        [ ]     (7)     A private business development company as defined in
Section 202(a)(22) of the Investment Advisers Act of 1940.



<PAGE>   28


        [ ]     (8)     A not-for-profit organization described n Section
501(c)(3) of the Code with total assets in excess of $5,000,000.

        [ ]     (9)     A natural person (i.e., not a corporation, trust or
partnership) whose individual net worth (total assets less total liabilities),
or joint net worth with spouse, is in excess of $1,000,000.

        [ ]     (10)    A trust, the trustee of which is a bank as defined in
Section 3(a)(2) of the Securities Act acting in its fiduciary capacity.

        [x]     (11)    An entity (other than a trust) in which ALL of the
equity owners (i.e., partners or shareholders) are accredited investors pursuant
to any of the paragraphs above.

        [ ]     (12)    A trust which its grantor may revoke at any time and
over whose assets its grantor retains sole investment control and the grantor is
an accredited investor pursuant to paragraph (9) above.

        [x]     (13)    A corporation, trust or partnership and the total
purchase price of Securities purchased by such entity does not exceed 20% of the
undersigned's net worth at the time of sale. The undersigned has not been formed
for the specific purpose of acquiring the Securities.

        [ ]     (14)    Any director, executive officer or general partner of
the Issuer or any director, executive officer or general partner of the Issuer.


                      Designated Bank:
                              Address:
                          Account No.:
                            Attention:

                              Initial Closing Date

<TABLE>
<CAPTION>
Securities        Principal Amount   Aggregate Purchase Price     Warrants
<S>               <C>                <C>                           <C>
Bridge
Securities        $877,305.00        $877,305.00                   87.7305
</TABLE>

                               Second Closing Date

<TABLE>
<CAPTION>
Securities        Principal Amount   Aggregate Purchase Price     Warrants
<S>               <C>                <C>                           <C>
Bridge
Securities        $877,305.00               $877,305.00            87.7305
</TABLE>



<PAGE>   29


MORGAN STANLEY VENTURE INVESTORS III, L.P.

By:   Morgan Stanley Venture Partners III, L.L.C.
      its General Partner

By:   Morgan Stanley Venture Capital III, Inc.,
      its Institutional Managing Member


By: /s/ Fazle Husain
    ---------------------------------------------
    Title:   General Partner
    Address: 1221 Avenue of the Americas
             New York, New York 10020
    Fax:     (212) 762-8424

        The Purchaser represents and warrants that it is one or more of the
following (please check appropriate box)

        [ ]     (1)     A bank as defined in Section 3(a)(2) of the Securities
Act, acting in either its individual or fiduciary capacity.

        [ ]     (2)     An insurance company as defined in Section 2(13) of the
Securities Act.

        [ ]     (3)     An investment company registered under the Investment
Company Act of 1940.

        [ ]     (4)     A business development company as defined in Section
2(a)(48) of the Investment Company Act of 1940.

        [ ]     (5)     A Small Business Investment Company licensed by the U.S.
Small Business Administration under Section 301(c) or (d) of the Small Business
Investment Act of 1958.

        [ ]     (6)     An employee benefit plan within the meaning of Title I
of the Employee Retirement Income Security Act of 1974 and (i) the decision to
make an investment in the Securities was made by a plan fiduciary, as defined in
Section 3(21) of such Act, which fiduciary is either a bank, insurance company
or registered investment advisor, or such plan has total assets in excess of
$5,000,000.

        [ ]     (7)     A private business development company as defined in
Section 202(a)(22) of the Investment Advisers Act of 1940.

        [ ]     (8)     A not-for-profit organization described n Section
501(c)(3) of the Code with total assets in excess of $5,000,000.



<PAGE>   30


        [ ]     (9)     A natural person (i.e., not a corporation, trust or
partnership) whose individual net worth (total assets less total liabilities),
or joint net worth with spouse, is in excess of $1,000,000.

        [ ]     (10)    A trust, the trustee of which is a bank as defined in
Section 3(a)(2) of the Securities Act acting in its fiduciary capacity.

        [x]     (11)    An entity (other than a trust) in which ALL of the
equity owners (i.e., partners or shareholders) are accredited investors pursuant
to any of the paragraphs above.

        [ ]     (12)    A trust which its grantor may revoke at any time and
over whose assets its grantor retains sole investment control and the grantor is
an accredited investor pursuant to paragraph (9) above.

        [x]     (13)    A corporation, trust or partnership and the total
purchase price of Securities purchased by such entity does not exceed 20% of the
undersigned's net worth at the time of sale. The undersigned has not been formed
for the specific purpose of acquiring the Securities.

        [ ]     (14)    Any director, executive officer or general partner of
the Issuer or any director, executive officer or general partner of the Issuer.


                             Designated Bank:
                                     Address:
                                 Account No.:
                                   Attention:

                             Initial Closing Date

<TABLE>
<CAPTION>
Securities     Principal Amount      Aggregate Purchase Price     Warrants
<S>               <C>                       <C>                     <C>
Bridge
Securities        $84,237.00                $84,237.00              8.4237
</TABLE>


                              Second Closing Date

<TABLE>
<CAPTION>
Securities     Principal Amount      Aggregate Purchase Price     Warrants
<S>               <C>                       <C>                     <C>
Securities        $84,237.00                $84,237.00             8.4237
</TABLE>



<PAGE>   31


THE MORGAN STANLEY VENTURE PARTNERS
  ENTREPRENEUR FUND, L.P.

By:   Morgan Stanley Venture Partners III, L.L.C.
      its General Partner

By:   Morgan Stanley Venture Capital III, Inc.,
      its Institutional Managing Member


By: /s/ Fazle Husain
    ---------------------------------------------
    Title:   General Partner
    Address: 1221 Avenue of the Americas
             New York, New York 10020
    Fax:     (212) 762-8424


        The Purchaser represents and warrants that it is one or more of the
following (please check appropriate box)

        [ ]     (1)     A bank as defined in Section 3(a)(2) of the Securities
Act, acting in either its individual or fiduciary capacity.

        [ ]     (2)     An insurance company as defined in Section 2(13) of the
Securities Act.

        [ ]     (3)     An investment company registered under the Investment
Company Act of 1940.

        [ ]     (4)     A business development company as defined in Section
2(a)(48 of the Investment Company Act of 1940.

        [ ]     (5)     A Small Business Investment Company licensed by the U.S.
Small Business Administration under Section 301(c) or (d) of the Small Business
Investment Act of 1958.

        [ ]     (6)     An employee benefit plan within the meaning of Title I
of the Employee Retirement Income Security Act of 1974 and (i) the decision to
make an investment in the Securities was made by a plan fiduciary, as defined in
Section 3(21) of such Act, which fiduciary is either a bank, insurance company
or registered investment advisor, or such plan has total assets in excess of
$5,000,000.

        [ ]     (7)     A private business development company as defined in
Section 202(a)(22) of the Investment Advisers Act of 1940.



<PAGE>   32


        [ ]     (8)     A not-for-profit organization described n Section
501(c)(3) of the Code with total assets in excess of $5,000,000.

        [ ]     (9)     A natural person (i.e., not a corporation, trust or
partnership) whose individual net worth (total assets less total liabilities),
or joint net worth with spouse, is in excess of $1,000,000.

        [ ]     (10)    A trust, the trustee of which is a bank as defined in
Section 3(a)(2) of the Securities Act acting in its fiduciary capacity.

        [x]     (11)    An entity (other than a trust) in which ALL of the
equity owners (i.e., partners or shareholders) are accredited investors pursuant
to any of the paragraphs above.

        [ ]     (12)    A trust which its grantor may revoke at any time and
over whose assets its grantor retains sole investment control and the grantor is
an accredited investor pursuant to paragraph (9) above.

        [x]     (13)    A corporation, trust or partnership and the total
purchase price of Securities purchased by such entity does not exceed 20% of the
undersigned's net worth at the time of sale. The undersigned has not been formed
for the specific purpose of acquiring the Securities.

        [ ]     (14)    Any director, executive officer or general partner of
the Issuer or any director, executive officer or general partner of the Issuer.


                             Designated Bank:
                                     Address:
                                 Account No.:
                                   Attention:

                             Initial Closing Date

<TABLE>
<CAPTION>
Securities     Principal Amount      Aggregate Purchase Price     Warrants
<S>               <C>                       <C>                     <C>
Bridge
Securities        $38,458.00                $38,458.00              3.8458
</TABLE>


                              Second Closing Date

<TABLE>
<CAPTION>
Securities     Principal Amount      Aggregate Purchase Price     Warrants
<S>               <C>                       <C>                     <C>
Bridge
Securities        $38,458.00                $38,458.00              3.8458
</TABLE>



<PAGE>   33


BANKAMERICA VENTURES


By: /s/ James D. Murphy
    ----------------------------------------
    Title:   President and Managing Director
    Address: 950 Tower Lane, Suite 700
             Foster City, CA 94404
    Fax:     (650) 378-6040


        The Purchaser represents and warrants that it is one or more of the
following (please check appropriate box)

        [ ]     (1)     A bank as defined in Section 3(a)(2) of the Securities
Act, acting in either its individual or fiduciary capacity.

        [ ]     (2)     An insurance company as defined in Section 2(13) of the
Securities Act.

        [ ]     (3)     An investment company registered under the Investment
Company Act of 1940.

        [ ]     (4)     A business development company as defined in Section
2(a)(48) of the Investment Company Act of 1940.

        [x]     (5)     A Small Business Investment Company licensed by the U.S.
Small Business Administration under Section 301(c) or (d) of the Small Business
Investment Act of 1958.

        [ ]     (6)     An employee benefit plan within the meaning of Title I
of the Employee Retirement Income Security Act of 1974 and (i) the decision to
make an investment in the Securities was made by a plan fiduciary, as defined in
Section 3(21) of such Act, which fiduciary is either a bank, insurance company
or registered investment advisor, or such plan has total assets in excess of
$5,000,000.

        [ ]     (7)     A private business development company as defined in
Section 202(a)(22) of the Investment Advisers Act of 1940.

        [ ]     (8)     A not-for-profit organization described n Section
501(c)(3) of the Code with total assets in excess of $5,000,000.

        [ ]     (9)     A natural person (i.e., not a corporation, trust or
partnership) whose individual net worth (total assets less total liabilities),
or joint net worth with spouse, is in excess of $1,000,000.



<PAGE>   34


        [ ]     (10)    A trust, the trustee of which is a bank as defined in
Section 3(a)(2) of the Securities Act acting in its fiduciary capacity.

        [ ]     (11)    An entity (other than a trust) in which ALL of the
equity owners (i.e., partners or shareholders) are accredited investors pursuant
to any of the paragraphs above.

        [ ]     (12)    A trust which its grantor may revoke at any time and
over whose assets its grantor retains sole investment control and the grantor is
an accredited investor pursuant to paragraph (9) above.

        [ ]     (13)    A corporation, trust or partnership and the total
purchase price of Securities purchased by such entity does not exceed 20% of the
undersigned's net worth at the time of sale. The undersigned has not been formed
for the specific purpose of acquiring the Securities.

        [ ]     (14)    Any director, executive officer or general partner of
the Issuer or any director, executive officer or general partner of the Issuer.


                             Designated Bank:
                                     Address:
                                 Account No.:
                                   Attention:


                             Initial Closing Date

<TABLE>
<CAPTION>
Securities     Principal Amount      Aggregate Purchase Price     Warrants
<S>               <C>                       <C>                       <C>
Bridge
Securities        $1,400,000                $1,400,000                140
</TABLE>


                              Second Closing Date

<TABLE>
<CAPTION>
Securities     Principal Amount      Aggregate Purchase Price     Warrants
<S>               <C>                       <C>                       <C>
Bridge
Securities        $1,400,000                $1,400,000                140
</TABLE>



<PAGE>   35


STATE OF WISCONSIN INVESTMENT BOARD


By: /s/ John Nelson
    ------------------------------------
    Title:   Investment Director
    Address: 121 East Wilson Street
             Madison, WI 53702
    Fax:     (608) 266-2436


        The Purchaser represents and warrants that it is one or more of the
following (please check appropriate box)

        [ ]     (1)     A bank as defined in Section 3(a)(2) of the Securities
Act, acting in either its individual or fiduciary capacity.

        [ ]     (2)     An insurance company as defined in Section 2(13) of the
Securities Act.

        [ ]     (3)     An investment company registered under the Investment
Company Act of 1940.

        [ ]     (4)     A business development company as defined in Section
2(a)(48) of the Investment Company Act of 1940.

        [ ]     (5)     A Small Business Investment Company licensed by the U.S.
Small Business Administration under Section 301(c) or (d) of the Small Business
Investment Act of 1958.

        [ ]     (6)     An employee benefit plan within the meaning of Title I
of the Employee Retirement Income Security Act of 1974 and (i) the decision to
make an investment in the Securities was made by a plan fiduciary, as defined in
Section 3(21) of such Act, which fiduciary is either a bank, insurance company
or registered investment advisor, or such plan has total assets in excess of
$5,000,000.

        [ ]     (7)     A private business development company as defined in
Section 202(a)(22) of the Investment Advisers Act of 1940.

        [x]     (8)     A not-for-profit organization described in Section
501(c)(3) of the Code with total assets in excess of $5,000,000.

        [ ]     (9)     A natural person (i.e., not a corporation, trust or
partnership) whose individual net worth (total assets less total liabilities),
or joint net worth with spouse, is in excess of $1,000,000.



<PAGE>   36


        [ ]     (10)    A trust, the trustee of which is a bank as defined in
Section 3(a)(2) of the Securities Act acting in its fiduciary capacity.

        [ ]     (11)    An entity (other than a trust) in which ALL of the
equity owners (i.e., partners or shareholders) are accredited investors pursuant
to any of the paragraphs above.

        [ ]     (12)    A trust which its grantor may revoke at any time and
over whose assets its grantor retains sole investment control and the grantor is
an accredited investor pursuant to paragraph (9) above.

        [ ]     (13)    A corporation, trust or partnership and the total
purchase price of Securities purchased by such entity does not exceed 20% of the
undersigned's net worth at the time of sale. The undersigned has not been formed
for the specific purpose of acquiring the Securities.

        [ ]     (14)    Any director, executive officer or general partner of
the Issuer or any director, executive officer or general partner of the Issuer.


                             Designated Bank:
                                     Address:
                                 Account No.:
                                   Attention:


                             Initial Closing Date

<TABLE>
<CAPTION>
Securities     Principal Amount      Aggregate Purchase Price     Warrants
<S>               <C>                       <C>                        <C>
Bridge
Securities        $600,000                  $600,000                   60
</TABLE>


                              Second Closing Date

<TABLE>
<CAPTION>
Securities     Principal Amount      Aggregate Purchase Price     Warrants
<S>               <C>                       <C>                        <C>
Bridge
Securities        $600,000                  $600,000                   60
</TABLE>



<PAGE>   37


                                                                      SCHEDULE I


                       SMALL BUSINESS INVESTMENT COMPANIES



BankAmerica Ventures




<PAGE>   38



                                                                     SCHEDULE II


                                 USE OF PROCEEDS

                              (Please see attached)



<PAGE>   39



                                                                       EXHIBIT A



                           FORM OF SENIOR CONVERTIBLE
                            FLOATING RATE BRIDGE NOTE



<PAGE>   40



                                                                       EXHIBIT B



                           CERTIFICATE OF DESIGNATION



<PAGE>   41


                                                                       EXHIBIT C



                                 FORM OF WARRANT



<PAGE>   42


                                                                       EXHIBIT D

                               SECURITY AGREEMENT




<PAGE>   1
                                                                       EXHIBIT 3


                                     FORM OF
                  SENIOR CONVERTIBLE FLOATING RATE BRIDGE NOTE

        THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED, OR ANY STATE SECURITIES LAWS AND MAY NOT BE OFFERED OR SOLD EXCEPT
IN COMPLIANCE THEREWITH. THIS SECURITY ALSO IS SUBJECT TO ADDITIONAL
RESTRICTIONS ON TRANSFER AS SET FORTH IN THE SECURITIES PURCHASE AGREEMENT DATED
AS OF MAY 20, 1999, A COPY OF WHICH MAY BE OBTAINED FROM CARDIAC PATHWAYS
CORPORATION.



No.                                                          $[Principal Amount]


                          CARDIAC PATHWAYS CORPORATION

                  SENIOR CONVERTIBLE FLOATING RATE BRIDGE NOTE

        Cardiac Pathways Corporation, a Delaware corporation (together with its
successors and assigns the "Issuer"), for value received hereby promises to pay
to ____________ (the "Holder") and its successors, transferees and assigns the
principal sum of [Principal Amount] by wire transfer of immediately available
funds to the Holder's account (the "Bank Account") at a bank in the United
States specified on Schedule I hereto, as amended from time to time, on the
Stated Maturity Date, in such coin or currency of the United States of America
as at the time of payment shall be legal tender for the payment of public and
private debts, and to pay interest, quarterly in arrears, on August __, November
__, February __ and May __ (unless such day is not a Business Day, in which
event on the next succeeding Business Day) (each an "Interest Payment Date") of
each year in which this Note remains outstanding, commencing with August __,
1999, on the unpaid principal sum hereof outstanding in like coin or currency,
at the rates per annum set forth below, by wire transfer of immediately
available funds to the Bank Account from the most recent Interest Payment Date
to which interest has been paid on this Note until payment in full of the
principal sum hereof has been made.



<PAGE>   2


        The interest rate shall be a floating rate per annum (the "Interest
Rate") equal to the sum of (i) the variable rate of interest announced by
Silicon Valley Bank as its "prime rate" in effect from time to time plus (ii)
2.00%.

        Further, the Issuer shall pay interest on overdue principal at a rate
per annum 5% above the rate borne by the Notes at the time the same became
overdue (the "Overdue Rate"), and interest on overdue installments of interest,
to the extent lawful, at the Overdue Rate, it being understood that the payment
of interest on interest may result in the compounding of interest.

        The Issuer may, at its option and in its sole discretion, in lieu of the
payment in whole or in part of interest in cash on this Note, on any Interest
Payment Date, pay interest on this Note through the issuance of additional Notes
("Additional Securities"). Such Additional Securities shall be in an aggregate
principal amount equal to the amount of interest that would be payable with
respect to this Note on such Interest Payment Date (less any cash interest
payments, if any) and such Additional Securities shall be identical to the Notes
otherwise issued. Such Additional Securities shall be issued only in
denominations of $1,000 and multiples thereof. Any interest due and payable in
Additional Securities which cannot be paid in Notes because such Note would have
a denomination less than $1,000 shall be paid in cash. Except as expressly
provided herein, the term "Notes" shall include all Additional Securities that
may be issued pursuant to this paragraph.

        Interest on this Note will be calculated on the basis of a 360 day year,
based on the actual number of days elapsed.

        Notwithstanding anything herein to the contrary, the interest or any
amount deemed to be interest payable by the Issuer with respect to this Note
shall not exceed the maximum amount permitted by applicable law and, to the
extent that any payments in excess of such permitted amount are received by the
Holder, such excess shall be considered payments in respect of the principal
amount of this Note. All sums paid or agreed to be paid to the Holder for the
use, forbearance or retention of the indebtedness of the Issuer to the Holder
shall, to the extent permitted by applicable law, be amortized, prorated,
allocated and spread throughout the full term of such indebtedness until payment
in full of the principal so that the interest on account of such indebtedness
shall not exceed the maximum amount permitted by applicable law.

        This Note is one of a duly authorized issue of senior convertible
floating rate bridge notes of the Issuer (the "Notes") referred to in the
Securities Purchase Agreement dated as of May __, 1999 among the Issuer and the
Purchasers listed on the signature pages thereto (the "Purchase Agreement"). The
Notes are



                                        2

<PAGE>   3

subject to the terms and conditions of the Purchase Agreement. The Notes are
transferable and assignable to one or more purchasers (in denominations of
$250,000 or any larger multiple of $100,000), in accordance with the limitations
set forth in the Purchase Agreement. The Issuer agrees to issue from time to
time replacement Notes in the form hereof to facilitate such transfers and
assignments. In addition, after delivery of an indemnity in form and substance
satisfactory to the Issuer, the Issuer also agrees to issue replacement Notes
for Notes which have been lost, stolen, mutilated or destroyed.

        The Issuer shall keep at its principal office a register (the
"Register") in which shall be entered the names and addresses of the registered
holders of the Notes and particulars of the respective Notes held by them and of
all transfers of such Notes. References to the "Holder" or "Holders" shall mean
the Person listed in the Register as the payee of any Note unless the payee
shall have presented such Note to the Issuer for transfer and the transferee
shall have been entered in the Register as a subsequent holder, in which case
the term shall mean such subsequent holder. The ownership of the Notes shall be
proven by the Register. For the purpose of paying interest and principal on the
Notes, the Issuer shall be entitled to rely on the names and addresses in the
Register and notwithstanding anything to the contrary contained in this Note, no
Event of Default shall occur under Section 4(a) or 4(b) if payment of interest
and principal is made in accordance with the names and addresses and particulars
contained in the Register.

        SECTION 1. Certain Terms Defined. Terms defined in the Credit Agreement
and not otherwise defined herein have, as used herein, the respective meanings
provided for therein. The following additional terms (except as otherwise
expressly provided or unless the context otherwise clearly requires) for all
purposes of this Note shall have the respective meanings specified below. All
accounting terms used herein and not expressly defined shall have the meanings
given to them in accordance with generally accepted accounting principles, and
the term "generally accepted accounting principles" shall mean such accounting
principles which are generally accepted as of the date hereof. The terms defined
in this Section 1 include the plural as well as the singular.

        "Affiliate" of any Person means any other Person directly or indirectly
controlling or controlled by or under direct or indirect common control with
such Person. For the purposes of this definition, "control" when used with
respect to any Person means the possession, directly or indirectly, of the power
to direct or cause the direction of the management and policies of such Person,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.



                                        3

<PAGE>   4


        "Business Day" means any day except a Saturday, Sunday or other day on
which commercial banks in San Francisco and the City of New York are authorized
by law to close.

        "Capital Stock" means, with respect to any Person, any and all shares,
interests, participations or other equivalents (however designated) of such
Person's capital stock whether now outstanding or issued after the date of this
Note, including, without limitation, all Common Stock and Preferred Stock.

        "Certificate of Designation" means the Certificate of Designation of the
Issuer substantially in the form of Exhibit B to the Purchase Agreement, setting
forth the terms of the Preferred Stock.

        "Commission" means the Securities and Exchange Commission.

        "Common Stock" means, with respect to any Person, any and all shares,
interests, participations and other equivalents (however designated) of such
person's common stock, whether now outstanding or issued after the date of this
Note, and includes, without limitation, all series and classes of such common
stock.

        "Credit Agreement" shall have the meaning set forth in the Purchase
Agreement.

        "Currency Agreement" means any foreign exchange contract, currency swap
agreement or other similar agreement or arrangement designed to protect the
Issuer against fluctuations in currency values.

        "Debt" of any Person means at any date, without duplication, (i) all
obligations of such Person for borrowed money, (ii) all obligations of such
Person evidenced by bonds, debentures, notes, or other similar instruments,
(iii) all obligations of such Person in respect of letters of credit or other
similar instruments (or reimbursement obligations with respect thereto), (iv)
all obligations of such Person to pay the deferred purchase price of property or
services, except Trade Payables, (v) all obligations of such Person as lessee
under capital leases, (vi) all Debt of others secured by a Lien on any asset of
such Person, whether or not such Debt is assumed by such Person, and (vii) all
Debt of others Guaranteed by such Person and (viii) to the extent not otherwise
included, obligations under Currency Agreements and Interest Rate Agreements.

        "Derivatives Obligations" of any Person means all obligations of such
Person in respect of any rate swap transaction, basis swap, forward rate
transaction, commodity swap, commodity option, equity or equity index swap,



                                        4

<PAGE>   5

equity or equity index option, bond option, interest rate option, foreign
exchange transaction, cross-currency rate swap transaction, currency option or
any other similar transaction (including any option with respect to any of the
foregoing transactions) or any combination of the foregoing transactions.

        "Event of Default" means any event or condition specified as such in
Section 4 which shall have continued for the period of time, if any, therein
designated.

        "Interest Rate Agreement" means any interest rate protection agreement,
interest rate future, interest rate option, interest rate swap, interest rate
cap or other interest rate hedge arrangement, to or under which the Issuer is a
party or a beneficiary on the date hereof or becomes a party or a beneficiary
hereafter.

        "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest or encumbrance of any kind in respect of such asset.
For the purposes of this Note, the Issuer shall be deemed to own subject to a
Lien any asset which it has acquired or holds subject to the interest of a
vendor or lessor under any conditional sale agreement, capital lease or other
title retention agreement relating to such asset.

        "Material Financial Obligation" means a principal or face amount of Debt
and/or payment obligations in respect of any Derivative Obligations of the
Issuer and/or one or more if to Subsidiaries, arising in one or more related or
unrelated transactions, exceeding in the aggregate $250,000.

        "Permitted Lien" has the meaning set forth in the Credit Agreement.

        "Person" means an individual, a corporation, a partnership, limited
liability company, an association, a trust or any other entity or organization,
including a government or political subdivision or an agency or instrumentality
thereof.

        "Preferred Stock" means the Series B Convertible Preferred Stock of the
Issuer as set forth in the Certificate of Designation.

        "Preferred Stock Purchase Agreement" means the Series B Convertible
Preferred Stock Purchase Agreement dated as of May 20, 1999 among the Issuer and
the purchasers listed therein.

        "Registration Rights" shall have the meaning set forth in the Purchase
Agreement.



                                        5

<PAGE>   6

        "Stated Maturity Date" means May 20, 2000.

        "Subsidiary" means, with respect to any Person, any corporation or other
entity of which a majority of the Capital Stock or other ownership interests
having ordinary voting power to elect a majority of the board of directors or
other persons performing similar functions are at the time directly or
indirectly owned by such Person.

        "Transaction" means the purchase of up to $40 million aggregate
preference amount of the Issuer's Series B Convertible Preferred Stock by the
purchasers listed on the signature pages of the Preferred Stock Purchase
Agreement.

        "Trade Payables" means accounts payable or any other indebtedness or
monetary obligations to trade creditors created or assumed by the Issuer or any
Subsidiary of the Issuer in the ordinary course of business in connection with
the obtaining of materials or services.

        "Warrants" means warrants exercisable for shares of Preferred Stock,
substantially in the form of Exhibit C to the Purchase Agreement.

        SECTION 2. Payment of Principal and Interest. No provision of this Note
shall alter or impair the obligations of the Issuer, which are absolute and
unconditional, to pay the principal of and interest on this Note at the place,
times, and rate, and in the currency, herein prescribed.

        SECTION 3. Covenants. The Issuer will comply with the covenants set
forth in Article 6 of the Purchase Agreement.

        SECTION 4. Events of Default and Remedies.

                (a) Event of Default Defined; Acceleration of Maturity; Waiver
of Default. In case one or more of the following Events of Default (whatever the
reason for such Event of Default and whether it shall be voluntary or
involuntary or be effected by operation of law or pursuant to any judgment,
decree or order of any court or any order, rule or regulation of any
administrative or governmental body) shall have occurred and be continuing:

                (i) default in the payment of any interest (including the
        payment of interest in Additional Securities in lieu of a cash payment)
        upon any of the Notes as and when the same shall become due and payable;
        or



                                        6

<PAGE>   7


                (ii) default in the payment of all or any part of the principal
        on any of the Notes as and when the same shall become due and payable,
        at maturity, upon any redemption, by declaration or otherwise; or

                (iii) failure on the part of the Issuer duly to observe or
        perform any other of the covenants or agreements on the part of the
        Issuer contained in the Notes or the Purchase Agreement for a period of
        10 days after the date on which written notice specifying such failure,
        stating that such notice is a "Notice of Default" hereunder and
        demanding that the Issuer remedy the same, shall have been given by
        registered or certified mail, return receipt requested, to the Issuer by
        the holders of at least a majority in aggregate principal amount of the
        Notes at the time outstanding; or

                (iv) the Issuer or any Subsidiary shall fail to make any payment
        in respect of any Material Financial Obligation when due, giving effect
        to any applicable grace period;

                (v) a judgment or order (not covered by insurance) for the
        payment of money shall be rendered against the Issuer or any Subsidiary
        of the Issuer in excess of $250,000 individually or $250,000 in the
        aggregate for all such judgments or orders against all such Persons
        (treating any deductibles, self insurance or retention as not so
        covered) that shall not be discharged, and all such judgments and orders
        remain outstanding and there shall be any period of 30 consecutive days
        following entry of the judgment or order in excess of $250,000 or the
        judgment or order which causes the aggregate amount described above to
        exceed $250,000 during which a stay of enforcement of such judgment or
        order, by reason of a pending appeal or otherwise, shall not be in
        effect; or

                (vi) an involuntary case or other proceeding shall be commenced
        against the Issuer or any of its Subsidiaries seeking liquidation,
        reorganization or other relief with respect to it or its debts under any
        bankruptcy, insolvency or other similar law now or hereafter in effect
        or seeking the appointment of a trustee, receiver, liquidator, custodian
        or other similar official of it or any substantial part of its property,
        and such involuntary case or other proceeding shall remain undismissed
        and unstayed for a period of 60 days; or an order for relief shall be
        entered against the Issuer or any of its Subsidiaries under the federal
        bankruptcy laws as now or hereafter in effect;

                (vii) the Issuer or any of its Subsidiaries shall commence a
        voluntary case under any applicable bankruptcy, insolvency or other



                                        6

<PAGE>   8

        similar law now or hereafter in effect, or consent to the entry of an
        order for relief in an involuntary case under any such law, or consent
        to the appointment or taking possession by a receiver, liquidator,
        assignee, custodian, trustee, sequestrator (or similar official) of the
        Issuer or any of its Subsidiaries or for any substantial part of the
        property of the Issuer or any of its Subsidiaries, or the Issuer or any
        of its Subsidiaries shall make any general assignment for the benefit of
        creditors;

                (viii) any representation, warranty, certification or statement
        made by the Issuer in the Purchase Agreement or in any certificate,
        financial statement or other document delivered pursuant to the Purchase
        Agreement shall be inaccurate or incorrect in any material respect when
        made;

                (ix) any Lien created by any of the Collateral Documents shall
        at any time fail to constitute a valid and perfected Lien on all of the
        Collateral purported to be subject to such Lien, subject to no prior or
        equal Lien (except Permitted Liens) or the Issuer or any Subsidiary
        shall so assert in writing;

                (x) Thomas M. Prescott shall cease to be chief executive officer
        of the Issuer;

                (xi) the shareholders of the Issuer shall fail to approve the
        Transaction by October 31, 1999;

                (xii) the shareholders of the Issuer shall, by affirmative vote
        at any time, fail to approve the Transaction;

                (xiii) Issuer shall have accepted a Higher Offer as defined in
        the Preferred Stock Purchase Agreement;

                (xiv) the Preferred Stock Purchase Agreement shall have been
        terminated for any other reason;

then, and in each and every such case (other than an Event of Default specified
in Section 4(a)(vi) or 4(a)(vii) hereof), unless the principal of all of the
Notes shall have already become due and payable, (x) the holders of not less
than 25% in aggregate principal amount of the Notes then outstanding, by notice
in writing to the Issuer (the "Acceleration Notice"), may declare the entire
principal amount of the Notes and the interest accrued thereon to be due and
payable immediately, and upon any such declaration the same shall become
immediately due and payable and (y) the Issuer shall issue to each Holder,
Warrants exercisable for a number of



                                        8

<PAGE>   9

shares of Preferred Stock that is calculated by dividing the aggregate principal
amount of the Notes held by such Holder by the product of 10,000 and the average
of the trading price of the Issuer's Common Stock, as reported on the Nasdaq
National Market for the 10 Business Days immediately preceding the date of the
Acceleration Notice. If an Event of Default specified in Section 4(a)(vi) or
4(a)(vii) occurs, the principal of and accrued interest on the Notes shall
become and be immediately due and payable without any declaration or other act
on the part of any Noteholder.

        The foregoing paragraph, however, is subject to the condition that if,
at any time after the principal of the Notes shall have been so declared due and
payable, and before any judgment or decree for the payment of the moneys due
shall have been obtained or entered as hereinafter provided, the Issuer shall
pay or shall deposit in trust for the benefit of the Noteholders a sum
sufficient to pay all matured installments of interest upon all the Notes and
the principal of any and all Notes which shall have become due otherwise than by
acceleration (with interest upon such principal and, to the extent that payment
of such interest is enforceable under applicable law, on overdue installments of
interest, at the same rate as the rate of interest specified in the Notes, to
the date of such payment or deposit), and if any and all defaults and Events of
Default under this Note, other than the non-payment of the principal of the
Notes which shall have become due by acceleration, shall have been cured, waived
or otherwise remedied as provided herein; then and in every such case, the
Holders of a majority in aggregate principal amount of the Notes then
outstanding, by written notice to the Issuer, may waive all defaults and rescind
and annul such declaration and its consequences, but no such waiver or
rescission and annulment shall extend to or shall affect any subsequent default
or shall impair any right consequent thereon.

                (b) Powers and Remedies Cumulative; Delay or Omission Not Waiver
of Default. No right or remedy herein conferred upon or reserved to the Holders
is intended to be exclusive of any other right or remedy, and every right and
remedy shall, to the extent permitted by law, be cumulative and in addition to
every other right and remedy given hereunder or now or hereafter existing at law
or in equity or otherwise. The assertion or employment of any right or remedy
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.

        No delay or omission of the Holders to exercise any right or power
accruing upon any Event of Default occurring and continuing as aforesaid shall
impair any such right or power or shall be construed to be a waiver of any such
Event of Default or an acquiescence therein; and every power and remedy given by
the Notes or by law may be exercised from time to time, and as often as shall be
deemed expedient, by the Holders.



                                        9

<PAGE>   10

                (c) Waiver of Past Defaults. Prior to the declaration of the
acceleration of maturity of the Notes as provided in Section 4(a), the Holders
of a majority in aggregate principal amount of the Notes at the time
outstanding, may on behalf of the Holders of all the Notes waive any past
default or Event of Default hereunder and its consequences, except a default (A)
in the payment of principal of or interest on any of the Notes or (B) in respect
of a covenant or provision hereof which cannot be modified or amended without
the consent of the Holder of each Note affected. In the case of any such waiver,
the Issuer, and the Holders of the Notes shall be restored to their former
positions and rights hereunder, respectively; but no such waiver shall extend to
any subsequent or other default or impair any right consequent thereon.

        Upon any such waiver, such default shall cease to exist and be deemed to
have been cured and not to have occurred, and any Event of Default arising
therefrom shall be deemed to have been cured, and not to have occurred for every
purpose of this Note; but no such waiver shall extend to any subsequent or other
default or Event of Default or impair any right consequent thereon.

        SECTION 5. Ranking of Notes. The Issuer covenants and agrees to ensure
that the obligations of the Issuer under the Bridge Securities constitute direct
and unconditional general obligations of the Issuer ranking in priority of
payment and as to security prior to all other secured and unsubordinated Debt of
the Issuer.

        SECTION 6. Modification of Notes. The Notes may be modified without
prior notice to any Holder but with the written consent of the Holders of a
majority in principal amount of the Notes then outstanding. Subject to Section
4(a) and Section 4(c), the Holders of a majority in principal amount of the
Notes then outstanding may waive compliance by the Issuer of any provision of
the Notes without prior notice to any Holder. However, without the consent of
each Holder affected, an amendment, supplement or waiver may not (i) reduce the
amount of Notes whose Holders must consent to an amendment, supplement or
waiver, (ii) reduce the rate or extend the time for payment for interest on any
Note, (iii) reduce the principal amount of or extend the fixed maturity of any
Note or alter the redemption provisions with respect thereto or (iv) make any
Note payable in money or property other than as stated in the Notes.

        The Required Purchasers have the right to convert the principal amount
of all outstanding Notes into fully paid and nonassessable shares of Preferred
Stock in accordance with the provisions set forth in Article 8 of the Purchase
Agreement.

        SECTION 7. Miscellaneous. This Note shall be deemed to be a contract
under the laws of the State of California, and for all purposes shall be
construed in



                                       10

<PAGE>   11

accordance with the laws of said State, except as may otherwise be required by
mandatory provisions of law. The parties hereto, including all guarantors or
endorsers, hereby waive presentment, demand, notice, protest and all other
demands and notices in connection with the delivery, acceptance, performance and
enforcement of this Note, except as specifically provided herein, and assent to
extensions of the time of payment, or forbearance or other indulgence without
notice. The Holder of this Note by acceptance of this Note agrees to be bound by
the provisions of this Note which are expressly binding on such Holder. In
determining whether the Holders of the requisite aggregate principal amount of
Notes have concurred in any direction, consent or waiver as provided under the
Notes, Notes which are owned by the Issuer or any Subsidiary or any other
obligor on the Notes shall be disregarded and deemed not to be outstanding for
the purpose of any such determination. The Section headings herein are for
convenience only and shall not affect the construction hereof.



                                       11


<PAGE>   12


        IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly
executed under its corporate seal.

Dated:

[Seal]                                  CARDIAC PATHWAYS CORPORATION



                                        By:
                                           -------------------------------------
                                           Chief Financial Officer



                                       12



<PAGE>   1
                                                                       EXHIBIT 4

                                                                [CONFORMED COPY]

                               SECURITY AGREEMENT

        AGREEMENT dated as of May 20, 1999, between CARDIAC PATHWAYS
CORPORATION, a Delaware corporation (together with its successors, the
"Company"), and BankAmerica Ventures, as Collateral Agent (the "Collateral
Agent") for the Purchasers referred to below.

                              W I T N E S S E T H :

        WHEREAS the Company, and the purchasers listed therein (the
"Purchasers"), are parties to a Securities Purchase Agreement of even date
herewith (as the same may be amended from time to time, the Securities Purchase
Agreement"); and

        WHEREAS, in order to induce said purchasers to enter into the Securities
Purchase Agreement, the Company has agreed to grant a continuing security
interest in and to the Collateral (as hereafter defined) to secure its
obligations under the Bridge Securities referred to in the Securities Purchase
Agreement;

        NOW, THEREFORE, in consideration of the premises and other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

        SECTION 1. Definitions. Terms defined in the Securities Purchase
Agreement and not otherwise defined herein have, as used herein, the respective
meanings provided for therein. The following additional terms, as used herein,
have the following respective meanings:

        "Accounts" means all "accounts" (as defined in the UCC) now owned or
hereafter acquired by the Company, and shall also mean and include all accounts
receivable, contract rights, book debts, notes, drafts and other obligations or
indebtedness owing to the Company arising from the sale, lease or exchange of
goods or other property by it and/or the performance of services by it
(including, without limitation, any such obligation which might be characterized
as an account, contract right or general intangible under the Uniform Commercial
Code in effect in any jurisdiction) and all of the Company's rights in, to and
under all purchase orders for goods, services or other property, and all of the
Company's rights to any goods, services or other property represented by any of
the foregoing (including returned or repossessed goods and unpaid sellers'
rights of rescission, replevin, reclamation and rights to stoppage in transit)
and all monies due to or to become due to the Company under all contracts for
the sale, lease or exchange of



<PAGE>   2

goods or other property and/or the performance of services by it (whether or not
yet earned by performance on the part of the Company), in each case whether now
existing or hereafter arising or acquired including, without limitation, the
right to receive the proceeds of said purchase orders and contracts and all
collateral security and guarantees of any kind given by any Person with respect
to any of the foregoing.

        "Collateral" has the meaning specified in Section 3.

        "Collateral Account" has the meaning specified in Section 5.

        "Commodity Account" means an account maintained by a commodity
intermediary in which a commodity contract is carried for a commodity customer.

        "Commodity Contract" means a commodity futures contract, an option on a
commodity futures contract, a commodity option, or other contract that, in each
case, is:

                (i) traded on or subject to the rules of a board of trade that
        has been designated as a contract market for such a contract pursuant to
        the federal commodities laws; or

                (ii) traded on a foreign commodity board of trade, exchange, or
        market, and is carried on the books of a commodity intermediary for a
        commodity customer.

        "Copyright License" means, any agreement now or hereafter in existence
granting to the Company, or pursuant to which the Company has granted to any
other Person, any right to use, copy, reproduce, distribute, prepare derivative
works, display or publish any records or other materials on which a Copyright is
in existence or may come into existence, including, without limitation, any
agreement identified in Schedule 1 to a Copyright Security Agreement.

        "Copyrights" means all the following: (i) all copyrights under the laws
of the United States or any other country (whether or not the underlying works
of authorship have been published), all registrations and recordings thereof,
all copyrightable works of authorship (whether or not published), and all
applications for copyrights under the laws of the United States or any other
country, including, without limitation, registrations, recordings and
applications in the United States Copyright Office or in any similar office or
agency of the United States, any State thereof or any other country or any
political subdivision thereof, including, without limitation, those described in
Schedule 1 to the Copyright Security Agreement, (ii) all renewals thereof, (iii)
all claims for, and rights to sue for, past



                                        2

<PAGE>   3

or future infringements of any of the foregoing, and (iv) all income, royalties,
damages and payments now or hereafter due or payable with respect to any of the
foregoing, including, without limitation, damages and payments for past or
future infringements thereof.

        "Copyright Security Agreement" means, with respect to the Company, a
Copyright Security Agreement, substantially in the form of Exhibit B hereto,
executed and delivered by the Company in favor of the Agent, for the benefit of
the Secured Parties, as amended from time to time.

        "Credit Agreement" means the Loan and Security Agreement dated as of May
15, 1998 between the Company and Silicon Valley Bank, together with the related
documents thereto, including without limitation, any security documents, in each
case as in effect on May 17, 1999.

        "Deposit Account" means a demand, time, savings, passbook or like
account maintained with a bank, savings and loan association, credit union or
like organization, other than an account evidenced by a negotiable certificate
of deposit.

        "Documents" means all "documents" (as defined in the UCC) or other
receipts covering, evidencing or representing goods, now owned or hereafter
acquired by the Company.

        "Equipment" means all "equipment" (as defined in the UCC) now owned or
hereafter acquired by the Company, including without limitation all motor
vehicles, trucks, trailers, railcars and barges, and all accessions thereto.

        "Financial Asset" means:

                (i) a Security;

                (ii) an obligation of a person or a share, participation, or
        other interest in a person or in property or an enterprise of a person,
        which is, or is of a type, dealt in or traded on financial markets, or
        which is recognized in any area in which it is issued or dealt in as a
        medium for investment; or

                (iii) any property that is held by a securities intermediary for
        another person in a Securities Account if the securities intermediary
        has expressly agreed with the other person that the property is to be
        treated as a financial asset under Article 8 of the UCC.



                                        3

<PAGE>   4

As context requires, the term means either the interest itself or the means by
which a person's claim to it is evidenced, including a certificated or
uncertificated Security, a Security certificate, or a Security Entitlement.

        "General Intangibles" means all "general intangibles" (as defined in the
UCC) now owned or hereafter acquired by the Company, including, without
limitation, (i) all obligations or indebtedness owing to the Company (other than
Accounts) from whatever source arising, (ii) all Patents, Patent Licenses,
trademarks, trademark licenses, rights in intellectual property, goodwill, trade
names, service marks, trade secrets, copyrights, permits and licenses, (iii) all
rights or claims in respect of refunds for taxes paid and (iv) all rights in
respect of any pension plan or similar arrangement maintained for employees of
any member of the Controlled Group.

        "Instruments" means all "instruments", "chattel paper" or "letters of
credit" (each as defined in the UCC) evidencing, representing, arising from or
existing in respect of, relating to, securing or otherwise supporting the
payment of, any of the Accounts, including (but not limited to) promissory
notes, drafts, bills of exchange and trade acceptances, now owned or hereafter
acquired by the Company.

        "Investment Property" means all (i) Securities, whether certificated or
uncertificated, (ii) Security Entitlements, (iii) Securities Accounts, (iv)
Commodity Contracts and (v) Commodity Accounts now owned or hereafter acquired
by the Company.

        "Inventory" means all "inventory" (as defined in the UCC), now owned or
hereafter acquired by the Company, wherever located, and shall also mean and
include, without limitation, all raw materials and other materials and supplies,
work-in-process and finished goods and any products made or processed therefrom
and all substances, if any, commingled therewith or added thereto.

        "Liquid Investments" has the meaning specified in Section 5(d).

        "Patent License" means, with respect to the Issuer, any agreement now or
hereafter in existence granting to the Issuer, or pursuant to which the Company
has granted to any other person, any right with respect to any Patent or any
invention now or hereafter in existence, whether patentable or not, whether a
patent or application for patent is in existence on such invention or not, and
whether a patent or application for patent on such invention may come into
existence.



                                        4

<PAGE>   5

        "Patents" means, with respect to the Issuer, all of the following: (i)
all letters patent and design letters patent of the United States or any other
country and all applications for letters patent and design letters patent of the
United States or any other country, including, without limitation, applications
in the United States Patent and Trademark Office or in any similar office or
agency of the United States, any state thereof, the District of Columbia or any
other country or any political subdivision of any of the foregoing, including,
without limitation, those described in the Perfection Certificate of the Issuer,
(ii) all reissues, divisions, continuations, continuations-in-part, renewals and
extensions of any of the foregoing, (iii) all claims for, and rights to sue for,
past or future infringements of any of the foregoing and (iv) all income,
royalties, damages and payments now or hereafter due or payable with respect to
any of the foregoing, including, without limitation, damages and payments for
past or future infringements thereof.

        "Patent Security Agreement" means, with respect to the Issuer, the
Patent Security Agreement executed and delivered by the Issuer in favor of the
Collateral Agent, for the benefit of the Secured Parties, substantially in the
form of Exhibit D hereto, as the same may be amended from time to time.

        "Perfection Certificate" means a certificate substantially in the form
of Exhibit A hereto, completed and supplemented with the schedules and
attachments contemplated thereby to the satisfaction of the Collateral Agent,
and duly executed by the chief executive officer and the chief legal officer of
the Company.

        "Permitted Liens" means the Security Interests and the Liens on the
Collateral permitted to be created, to be assumed or to exist pursuant to
Section 7.5 of the Credit Agreement.

        "Proceeds" means all proceeds of, and all other profits, products, rents
or receipts, in whatever form, arising from the collection, sale, lease,
exchange, assignment, licensing or other disposition of, or other realization
upon, collateral, including without limitation all claims of the Company against
third parties for loss of, damage to or destruction of, or for proceeds payable
under, or unearned premiums with respect to, policies of insurance in respect
of, any collateral, and any condemnation or requisition payments with respect to
any collateral, in each case whether now existing or hereafter arising.

        "Secured Obligations" means the obligations secured under this Agreement
including (a) all principal of and interest (including, without limitation, any
interest which accrues after the commencement of any case, proceeding or other
action relating to the bankruptcy, insolvency or reorganization



                                        5

<PAGE>   6

of the Company, whether or not allowed or allowable as a claim in any such
proceeding) on the Bridge Securities, (b) all other amounts payable by the
Company hereunder or under the Credit Agreement and (c) any renewals or
extensions of any of the foregoing.

        "Secured Parties" means the Purchasers and the Collateral Agent.

        "Securities Account" means an account to which a Financial Asset is or
may be credited in accordance with an agreement under which the person
maintaining the account undertakes to treat the person for whom the account is
maintained as entitled to exercise the rights that comprise the Financial Asset.

        "Security" means an obligation of an issuer or a share, participation,
or other interest in an issuer or in property or an enterprise of an issuer:

                (i) which is represented by a Security certificate in bearer or
        registered form, or the transfer of which may be registered upon books
        maintained for that purpose by or on behalf of the issuer;

                (ii) which is one of a class or series or by its terms is
        divisible into a class or series of shares, participations, interests,
        or obligations; and

                (iii) which:

                        (A) is, or is of a type, dealt in or traded on
                securities exchanges or securities markets; or

                        (B) is a medium for investment and by its terms
                expressly provides that it is a security governed by Article 8
                of the UCC.

        "Security Entitlement" means the rights and property interest of an
entitlement holder with respect to a Financial Asset specified in Part 5 of
Article 8 of the UCC.

        "Security Interests" means the security interests in the Collateral
granted hereunder securing the Secured Obligations.

         "Trademark License" means, with respect to the Issuer, any agreement
now or hereafter in existence granting to the Issuer, or pursuant to which the
Issuer has granted to any other Person, any right to use any Trademark.

        "Trademarks" means, with respect to the Issuer, all of the following:
(i) all trademarks, trade names, corporate names, company names,


                                      6

<PAGE>   7

business names, fictitious business names, trade styles, service marks, logos,
brand names, trade dress, prints and labels on which any of the foregoing have
appeared or appear, package and other designs, and any other source or business
identifiers, and general intangibles of like nature, and the rights in any of
the foregoing which arise under applicable law, (ii) the goodwill of the
business symbolized thereby or associated with each of them, (iii) all
registrations and applications in the United States Patent and Trademark Office
or in a similar office or agency of the United States, any State thereof, the
District of Columbia or any other country or any political subdivision of any of
the foregoing, (iv) all reissues, extensions and renewals of any of the
foregoing, (v) all claims for, and rights to sue for, past or future
infringements of any of the foregoing and (vi) all income, royalties, damages
and payments now or hereafter due or payable with respect to any of the
foregoing, including, without limitation, damages and payments for past or
future infringements thereof.

        "UCC" means the Uniform Commercial Code as in effect on the date hereof
in the State of California; provided that if by reason of mandatory provisions
of law, the perfection or the effect of perfection or non-perfection of the
Security Interest in any Collateral is governed by the Uniform Commercial Code
as in effect in a jurisdiction other than California, "UCC" means the Uniform
Commercial Code as in effect in such other jurisdiction for purposes of the
provisions hereof relating to such perfection or effect of perfection or
non-perfection.

        SECTION 2. Representations and Warranties. The Company represents and
warrants as follows:

                (a) The Company has good and marketable title to all of the
        Collateral, free and clear of any Liens other than Permitted Liens. The
        Company has taken all actions necessary under the UCC to perfect its
        interest in any Accounts purchased or otherwise acquired by it, as
        against its assignors and creditors of its assignors.

                (b) The Company has not performed any acts which might prevent
        the Collateral Agent from enforcing any of the terms of this Agreement
        or which would limit the Collateral Agent in any such enforcement. Other
        than financing statements or other similar or equivalent documents or
        instruments with respect to the Security Interests and Permitted Liens,
        no financing statement, mortgage, security agreement or similar or
        equivalent document or instrument covering all or any part of the
        Collateral is on file or of record in any jurisdiction in which such
        filing or recording would be effective to perfect a Lien on such
        Collateral. No Collateral is in the possession of any Person (other than
        the Company)



                                        7

<PAGE>   8


        asserting any claim thereto or security interest therein, except that
        the Collateral Agent or its designee may have possession of Collateral
        as contemplated hereby.

                (c) On or before the Closing Date, the Company shall deliver the
        Perfection Certificate to the Collateral Agent. The information
        specified therein shall be correct and complete. Within 60 days after
        the date of the first Borrowing, the Company shall furnish to the
        Collateral Agent file search reports from each UCC filing office
        specified in Schedule 7 to the Perfection Certificate confirming the
        filing information set forth in such Schedule.

                (d) The Security Interests constitute valid security interests
        under the UCC securing the Secured Obligations. When UCC financing
        statements in the form specified in Exhibit A shall have been filed in
        the offices specified in the Perfection Certificate, the Security
        Interests shall constitute perfected security interests in the
        Collateral (except Inventory in transit) to the extent that a security
        interest therein may be perfected by filing pursuant to the UCC, prior
        to all other Liens and rights of others therein except for Permitted
        Liens. When a Patent Security Agreement has been recorded with the
        United States Patent and Trademark Office, the Security Interests shall
        constitute perfected Security Interests in all right, title and interest
        of the Issuer in the Patents listed in Schedule 1 to such Agreement,
        prior to all other Liens and rights of others therein except for
        Permitted Liens. When notice of the Security Interest in the Collateral
        Account has been given to Citibank, N.A., the Security Interest in the
        Collateral Account will constitute a perfected Security Interest in the
        Collateral Account.

                (e) If and when any Financial Asset or Security Entitlement is
        held in the Collateral Account, the Collateral Agent will have "control"
        (as defined in Article 8 of the UCC) thereof and will be a "protected
        purchaser" (as defined in said Article 8) thereof.

                (f) The Inventory and Equipment are insured in accordance with
        the requirements of the Credit Agreement.

                (g) All Inventory has or will have been produced in compliance
        with the applicable requirements of the Fair Labor Standards Act, as
        amended.



                                        8

<PAGE>   9


        SECTION 3. The Security Interests. (a) In order to secure the full and
punctual payment of the Secured Obligations in accordance with the terms
thereof, and to secure the performance of all the Company's obligations
hereunder and under the Bridge Securities, the Company grants to the Collateral
Agent for the ratable benefit of the Secured Parties a continuing security
interest in and to all of the following property of the Company, whether now
owned or existing or hereafter acquired or arising and regardless of where
located (all being collectively referred to as the "Collateral"):

                   (i) Accounts;

                  (ii) Documents;

                 (iii) Equipment;

                  (iv) General Intangibles;

                   (v) Instruments;

                  (vi) Inventory;

                 (vii) Investment Property;

                (viii) All Deposit Accounts, including the Collateral Account,
        all cash deposited therein from time to time, the Liquid Investments
        made pursuant to Section 5(d) and other monies and property of any kind
        of the Company in the possession or under the control of the Collateral
        Agent;

                  (ix) All books and records (including, without limitation,
        customer lists, credit files, computer programs, printouts and other
        computer materials and records) of the Company pertaining to any of the
        Collateral; and

                   (x) All Proceeds of the Collateral described in Clauses
        3(a)(i) through 3(a)(ix) hereof.

        (b) The Security Interests are granted as security only and shall not
subject the Collateral Agent or any Secured Party to, or transfer or in any way
affect or modify, any obligation or liability of the Company with respect to
any of the Collateral or any transaction in connection therewith.

        SECTION 4. Further Assurances; Covenants. (a) The Company will not
change its name, identity or corporate structure in any manner unless it shall
have



                                        9

<PAGE>   10

given the Collateral Agent at least 30 days' prior notice thereof and delivered
an opinion of counsel with respect thereto in accordance with Section 4(l). The
Company will not change the location of (i) its chief executive office or chief
place of business or (ii) the locations where it keeps or holds any Collateral
or any records relating thereto from the applicable location described in the
Perfection Certificate unless it shall have given the Collateral Agent at least
30 days' prior notice thereof and delivered an opinion of counsel with respect
thereto in accordance with Section 4(l). The Company shall not in any event
change the location of any Collateral if such change would cause the Security
Interests in such Collateral to lapse or cease to be perfected.

        (b) The Company will, from time to time, at its expense, execute,
deliver, file and record any statement, assignment, instrument, document,
agreement or other paper and take any other action, (including, without
limitation, any filings of financing or continuation statements under the UCC)
that from time to time may be necessary or desirable, or that the Collateral
Agent may request, in order to create, preserve, perfect, confirm or validate
the Security Interests or to enable the Secured Parties to obtain the full
benefits of this Agreement, or to enable the Collateral Agent to exercise and
enforce any of its rights, powers and remedies hereunder with respect to any of
the Collateral. To the extent permitted by applicable law, the Company hereby
authorizes the Collateral Agent to execute and file financing statements or
continuation statements without the Company's signature appearing thereon. The
Company agrees that a carbon, photographic, photostatic or other reproduction of
this Agreement or of a financing statement is sufficient as a financing
statement. The Company shall pay the costs of, or incidental to, any recording
or filing of any financing or continuation statements concerning the Collateral.

        (c) If any Collateral is at any time in the possession or control of any
warehouseman, bailee or any of the Company's agents or processors, the Company
shall notify such warehouseman, bailee, agent or processor of the Security
Interests created hereby and to hold all such Collateral for the Collateral
Agent's account subject to the Collateral Agent's instructions.

        (d) The Company shall keep full and accurate books and records relating
to the Collateral, and stamp or otherwise mark such books and records in such
manner as the Required Lenders may reasonably require in order to reflect the
Security Interests.

        (e) The Company will immediately deliver and pledge each Instrument to
the Collateral Agent, appropriately endorsed to the Collateral Agent, provided
that so long as no Event of Default (as defined in the Bridge Securities) shall
have occurred and be continuing, the Company may retain for collection in the
ordinary



                                       10

<PAGE>   11

course any Instruments (other than checks and drafts constituting payments in
respect of Accounts, as to which the provisions of Section 5(b) shall apply)
received by it in the ordinary course of business and the Collateral Agent
shall, promptly upon request of the Company, make appropriate arrangements for
making any other Instrument pledged by the Company available to it for purposes
of presentation, collection or renewal (any such arrangement to be effected, to
the extent deemed appropriate to the Collateral Agent, against trust receipt or
like document).

        (f) The Company shall use its best efforts to cause to be collected from
its account debtors, as and when due, any and all amounts owing under or on
account of each Account (including, without limitation, Accounts which are
delinquent, such Accounts to be collected in accordance with lawful collection
procedures) and shall apply forthwith upon receipt thereof all such amounts as
are so collected to the outstanding balance of such Account. Subject to the
rights of the Secured Parties hereunder if an Event of Default shall have
occurred and be continuing, the Company may allow in the ordinary course of
business as adjustments to amounts owing under its Accounts (i) an extension or
renewal of the time or times of payment, or settlement for less than the total
unpaid balance, which the Company finds appropriate in accordance with sound
business judgment and (ii) a refund or credit due as a result of returned or
damaged merchandise, all in accordance with the Company's ordinary course of
business consistent with its historical collection practices. The costs and
expenses (including, without limitation, attorney's fees) of collection, whether
incurred by the Company or the Collateral Agent, shall be borne by the Company.

        (g) Upon the occurrence and during the continuance of any Event of
Default, upon request of the Required Purchasers through the Collateral Agent,
the Company will promptly notify (and the Company hereby authorizes the
Collateral Agent so to notify) each account debtor in respect of any Account or
Instrument that such Collateral has been assigned to the Collateral Agent
hereunder, and that any payments due or to become due in respect of such
Collateral are to be made directly to the Collateral Agent or its designee.

        (h) The Company shall, (i) on or prior to the date of the first
Borrowing, in the case of Equipment now owned and (ii) within 10 days of
acquiring any other Equipment, deliver to the Collateral Agent any and all
certificates of title, applications for title or similar evidence of ownership
of such Equipment and shall cause the Collateral Agent to be named as lienholder
on any such certificate of title or other evidence of ownership. The Company
shall promptly inform the Collateral Agent of any additions to or deletions from
the Equipment and shall not permit any such items to become a fixture to real
estate or an accession to other personal property.



                                       11

<PAGE>   12

        (i) Without the prior written consent of the Required Lenders, the
Company will not sell, lease, exchange, assign or otherwise dispose of, or grant
any option with respect to, any Collateral except that, subject to the rights of
the Secured Parties hereunder if an Event of Default shall have occurred and be
continuing, the Company may sell, lease or exchange Inventory and surplus or
worn-out Equipment in the ordinary course of business, whereupon, in the case of
such a sale or exchange, the Security Interests created hereby in such item (but
not in any Proceeds arising from such sale or exchange) shall cease immediately
without any further action on the part of the Collateral Agent.

        (j) Prior to the Closing Date under the Securities Purchase Agreement,
the Company will cause the Collateral Agent to be named as an insured party and
loss payee on each insurance policy covering risks relating to any of its
Inventory and Equipment. The Company will deliver to the Collateral Agent, upon
request of the Collateral Agent, the insurance policies for such insurance or
certificates of insurance evidencing such coverage. Each such insurance policy
shall include effective waivers by the insurer of all claims for insurance
premiums against the Secured Parties, provide for coverage to the Collateral
Agent regardless of any breach by the Company of any warranty or representation
made therein, not be subject to co-insurance, provide that all insurance
proceeds in excess of $50,000 per claim shall be adjusted with and payable to
the Collateral Agent and provide that no cancellation, termination or material
modification thereof shall be effective until at least 30 days after receipt by
the Collateral Agent of notice thereof. The Company hereby appoints the
Collateral Agent as its attorney-in-fact to make proof of loss, claim for
insurance and adjustments with insurers, and to execute or endorse all
documents, checks or drafts in connection with payments made as a result of any
insurance policies.

        (k) The Company will, promptly upon request, provide to the Collateral
Agent all information and evidence it may reasonably request concerning the
Collateral to enable the Collateral Agent to enforce the provisions of this
Agreement.

        (l) Not more than six months nor less than 30 days prior to each date on
which the Company proposes to take any action contemplated by Section 4(a), the
Company shall, at its cost and expense, cause to be delivered to the Purchasers
an opinion of counsel, satisfactory to the Collateral Agent, substantially in
the form of Exhibit B hereto, to the effect that all financing statements and
amendments or supplements thereto, continuation statements and other documents
required to be recorded or filed in order to perfect and protect the Security
Interests for a period, specified in such opinion, continuing until a date not
earlier than eighteen months from the date of such opinion, against all
creditors of and purchasers from the



                                       12

<PAGE>   13

Company have been filed in each filing office necessary for such purpose and
that all filing fees and taxes, if any, payable in connection with such filings
have been paid in full.

        (m) The Issuer agrees to notify the Collateral Agent immediately upon
filing any application for, or otherwise acquiring ownership of or a
registration relating to, any copyright, Patent or Trademark. At any time and
from time to time thereafter, the Collateral Agent may (and shall upon
instruction from the Required Lenders) require either Company to, at its expense
and upon the request of the Collateral Collateral Agent, file (as appropriate)
the Patent Security Agreement and the Trademark Security Agreement with the
United States Patent and Trademark Office and a copyright security agreement (in
form and substance satisfactory to the Collateral Agent) with the United States
Copyright Office, and take such other actions as may be necessary or reasonably
desirable, or that the Collateral Agent may reasonably request, in order to
create and perfect the security interests in such Patents, Trademarks or
copyrights, as the case may be. The Issuer shall notify the Collateral Agent
immediately if it knows that any application or registration relating to any
Patent or Trademark may become abandoned or dedicated to the public (other than
applications or registrations (x) with respect to any such Patents or Trademarks
that are no longer used or useful in the business of the Issuer or whose minimal
value does not reasonably justify the cost of maintaining such registration or
application, or (y) that have been refused by the applicable patent or trademark
registry) or of any adverse determination or development (including the
institution of, or any such determination or development in, any proceeding in
the United States Patent and Trademark Office, or any court) regarding the
Issuer's ownership of any Patent or Trademark, its right to register the same,
or to keep and maintain the same. In the event that any right to any Patent,
Patent License, Trademark or Trademark License of either Company is infringed,
misappropriated or diluted by a third party, the Issuer shall notify the
Collateral Agent promptly after it learns thereof and shall, unless the Issuer
shall reasonably determine that any such action would be of negligible economic
value, promptly sue for infringement, misappropriation or dilution and to
recover any and all damages for such infringement, misappropriation or dilution,
and take such other actions as the Issuer shall reasonably deem appropriate
under the circumstances to protect such Patent, Patent License, Trademark or
Trademark License. In no event shall either Company, either by itself or through
any agent, employee or licensee, file an application for the registration of any
Patent or Trademark with the United States Patent and Trademark Office, or with
any similar office or agency of the United States, any State thereof, the
District of Columbia or with any similar office or agency in any other country
or any political subdivision thereof, unless not less than 10 days prior thereto
it informs the Collateral Agent, and, upon request of the Collateral Agent,
executes and delivers any and all agreements, instruments,



                                       13

<PAGE>   14

documents and papers the Collateral Agent may request to evidence the Security
Interests in such Patent or Trademark and the goodwill and general intangibles
of the Issuer relating thereto or represented thereby, and the Issuer hereby
constitutes the Collateral Agent its attorney-in-fact to execute and file all
such writings for the foregoing purposes, all acts of such attorney being hereby
ratified and confirmed; such power being coupled with an interest, shall be
irrevocable until the Secured Obligations are paid in full.

        (n) From time to time upon request by the Collateral Agent, the Company
shall, at its cost and expense, cause to be delivered to the Purchasers an
opinion of counsel satisfactory to the Collateral Agent as to such matters
relating to the transactions contemplated hereby as the Required Purchasers may
reasonably request.

        SECTION 5. Collateral Account. (a) There is hereby established with the
Collateral Agent a collateral account (the "Collateral Account") in the name and
under the control of the Collateral Agent into which there shall be deposited
(i) from time to time the cash proceeds of the Collateral required to be
delivered to the Collateral Agent pursuant to subsection 5(b) hereof or any
other provision of this Agreement and (ii) the cash proceeds of the Securities
issued and sold pursuant to the Securities Purchase Agreement. Any income
received by the Collateral Agent with respect to the balance from time to time
standing to the credit of the Collateral Account, including any interest or
capital gains on Liquid Investments, shall remain, or be deposited, in the
Collateral Account. All right, title and interest in and to the cash amounts on
deposit from time to time in the Collateral Account together with any Liquid
Investments from time to time made pursuant to subsection 5(d) hereof shall vest
in the Collateral Agent, shall constitute part of the Collateral hereunder and
shall not constitute payment of the Secured Obligations until applied thereto as
hereinafter provided.

        (b) The Company shall instruct all account debtors and other Persons
obligated in respect of all Accounts to make all payments in respect of the
Accounts either (i) directly to the Collateral Agent (by instructing that such
payments be remitted to a post office box which shall be in the name and under
the control of the Collateral Agent) or (ii) to one or more other banks in any
state (other than Louisiana) in the United States (by instructing that such
payments be remitted to a post office box which shall be in the name and under
the control of such bank) under a Lockbox Letter substantially in the form of
Exhibit C hereto duly executed by the Company and such bank or under other
arrangements, in form and substance satisfactory to the Collateral Agent,
pursuant to which the Company shall have irrevocably instructed such other bank
(and such other bank shall have agreed) to remit all proceeds of such payments
directly to the Collateral Agent for deposit into the Collateral Account or as
the Collateral Agent may



                                       14

<PAGE>   15

otherwise instruct such bank. All such payments made to the Collateral Agent
shall be deposited in the Collateral Account. In addition to the foregoing, the
Company agrees that if the proceeds of any Collateral hereunder (including the
payments made in respect of Accounts) shall be received by it, the Company shall
as promptly as possible deposit such proceeds into the Collateral Account. Until
so deposited, all such proceeds shall be held in trust by the Company for and as
the property of the Secured Parties and shall not be commingled with any other
funds or property of the Company.

        (c) The balance from time to time standing to the credit of the
Collateral Account shall, except upon the occurrence and continuation of an
Event of Default, be distributed to the Company upon the order of the Company.
If immediately available cash on deposit in the Collateral Account is not
sufficient to make any distribution to the Company referred to in the previous
sentence of this Section 5(c), the Collateral Agent shall liquidate as promptly
as practicable Liquid Investments as required to obtain sufficient cash to make
such distribution and, notwithstanding any other provision of this Section 5,
such distribution shall not be made until such liquidation has taken place. Upon
the occurrence and continuation of an Event of Default, the Collateral Agent
shall, if so instructed by the Required Lenders, apply or cause to be applied
(subject to collection) any or all of the balance from time to time standing to
the credit of the Collateral Account in the manner specified in Section 9.

        (d) Amounts on deposit in the Collateral Account shall be invested and
re-invested from time to time in such Liquid Investments as the Company shall
determine, which Liquid Investments shall be held in the name and be under the
control of the Collateral Agent, provided that, if an Event of Default has
occurred and is continuing, the Collateral Agent shall, if instructed by the
Required Lenders, liquidate any such Liquid Securities and apply or cause to be
applied the proceeds thereof to the payment of the Secured Obligations in the
manner specified in Section 9. For this purpose, "Liquid Investments" means the
investments listed in clauses (b) and (c) of the definition of "Permitted
Investments" in the Credit Agreement; provided that (x) each Liquid Investment
shall mature within 30 days after it is acquired by the Collateral Agent and (y)
in order to provide the Collateral Agent, for the benefit of the Secured
Parties, with a perfected security interest therein, each Liquid Investment
shall be either:

                (i) evidenced by negotiable certificates or instruments, or if
        non-negotiable then issued in the name of the Collateral Agent, which
        (together with any appropriate instruments of transfer) are delivered
        to, and held by, the Collateral Agent or an agent thereof (which shall
        not be the Company or any of its Affiliates) in the State of New York;
        or



                                       15

<PAGE>   16

                (ii) in book-entry form and issued by the United States and
        subject to pledge under applicable state law and Treasury regulations
        and as to which (in the opinion of counsel to the Collateral Agent)
        appropriate measures shall have been taken for perfection of the
        Security Interests.

        SECTION 6. General Authority. The Company hereby irrevocably appoints
the Collateral Agent its true and lawful attorney, with full power of
substitution, in the name of the Company, the Collateral Agent, the Secured
Parties or otherwise, for the sole use and benefit of the Secured Parties, but
at the Company's expense, to the extent permitted by law to exercise, at any
time and from time to time while an Event of Default has occurred and is
continuing, all or any of the following powers with respect to all or any of the
Collateral:

                (a) to demand, sue for, collect, receive and give acquittance
        for any and all monies due or to become due thereon or by virtue
        thereof,

                (b) to settle, compromise, compound, prosecute or defend any
        action or proceeding with respect thereto,

                (c) to sell, transfer, assign or otherwise deal in or with the
        same or the proceeds or avails thereof, as fully and effectually as if
        the Collateral Agent were the absolute owner thereof, and

                (d) to extend the time of payment of any or all thereof and to
        make any allowance and other adjustments with reference thereto;

provided that the Collateral Agent shall give the Company not less than ten
days' prior notice of the time and place of any sale or other intended
disposition of any of the Collateral, except any Collateral which is perishable
or threatens to decline speedily in value or is of a type customarily sold on a
recognized market. The Collateral Agent and the Company agree that such notice
constitutes "reasonable notification" within the meaning of Section 9-504(3) of
the UCC.

        SECTION 7. Remedies upon Event of Default. (a) If any Event of Default
has occurred and is continuing, the Collateral Agent may exercise on behalf of
the Secured Parties all rights of a secured party under the UCC (whether or not
in effect in the jurisdiction where such rights are exercised) and, in addition,
the Collateral Agent may, without being required to give any notice, except as
herein provided or as may be required by mandatory provisions of law, (i)
withdraw all cash and Liquid Investments in the Collateral Account and apply
such cash and Liquid Investments and other cash, if any, then held by it as
Collateral as specified in Section 9 and (ii) if there shall be no such cash or
Liquid Investments or if such cash and Liquid Investments shall be insufficient
to pay all the Secured



                                       16

<PAGE>   17

Obligations in full, sell the Collateral or any part thereof at public or
private sale, for cash, upon credit or for future delivery, and at such price or
prices as the Collateral Agent may deem satisfactory. Any Secured Party may be
the purchaser of any or all of the Collateral so sold at any public sale (or, if
the Collateral is of a type customarily sold in a recognized market or is of a
type which is the subject of widely distributed standard price quotations, at
any private sale). The Company will execute and deliver such documents and take
such other action as the Collateral Agent deems necessary or advisable in order
that any such sale may be made in compliance with law. Upon any such sale the
Collateral Agent shall have the right to deliver, assign and transfer to the
purchaser thereof the Collateral so sold. Each purchaser at any such sale shall
hold the Collateral so sold to it absolutely and free from any claim or right of
whatsoever kind, including any equity or right of redemption of the Company
which may be waived, and the Company, to the extent permitted by law, hereby
specifically waives all rights of redemption, stay or appraisal which it has or
may have under any law now existing or hereafter adopted. The notice (if any) of
such sale required by Section 6 shall (A) in the case of a public sale, state
the time and place fixed for such sale, and (B) in the case of a private sale,
state the day after which such sale may be consummated. Any such public sale
shall be held at such time or times within ordinary business hours and at such
place or places as the Collateral Agent may fix in the notice of such sale. At
any such sale the Collateral may be sold in one lot as an entirety or in
separate parcels, as the Collateral Agent may determine. The Collateral Agent
shall not be obligated to make any such sale pursuant to any such notice. The
Collateral Agent may, without notice or publication, adjourn any public or
private sale or cause the same to be adjourned from time to time by announcement
at the time and place fixed for the sale, and such sale may be made at any time
or place to which the same may be so adjourned. In the case of any sale of all
or any part of the Collateral on credit or for future delivery, the Collateral
so sold may be retained by the Collateral Agent until the selling price is paid
by the purchaser thereof, but the Collateral Agent shall not incur any liability
in the case of the failure of such purchaser to take up and pay for the
Collateral so sold and, in the case of any such failure, such Collateral may
again be sold upon like notice. The Collateral Agent, instead of exercising the
power of sale herein conferred upon it, may proceed by a suit or suits at law or
in equity to foreclose the Security Interests and sell the Collateral, or any
portion thereof, under a judgment or decree of a court or courts of competent
jurisdiction.

        (b) For the purpose of enforcing any and all rights and remedies under
this Agreement the Collateral Agent may (i) require the Company to, and the
Company agrees that it will, at its expense and upon the request of the
Collateral Agent, forthwith assemble all or any part of the Collateral as
directed by the Collateral Agent and make it available at a place designated by
the Collateral



                                       17

<PAGE>   18

Agent which is, in its opinion, reasonably convenient to the Collateral Agent
and the Company, whether at the premises of the Company or otherwise, (ii) to
the extent permitted by applicable law, enter, with or without process of law
and without breach of the peace, any premise where any of the Collateral is or
may be located, and without charge or liability to it seize and remove such
Collateral from such premises, (iii) have access to and use the Company's books
and records relating to the Collateral and (iv) prior to the disposition of the
Collateral, store or transfer it without charge in or by means of any storage or
transportation facility owned or leased by the Company, process, repair or
recondition it or otherwise prepare it for disposition in any manner and to the
extent the Collateral Agent deems appropriate and, in connection with such
preparation and disposition, use without charge any trademark, trade name,
copyright, patent or technical process used by the Company. The Collateral Agent
may also render any or all of the Collateral unusable at the Company's premises
and may dispose of such Collateral on such premises without liability for rent
or costs.

        SECTION 8. Limitation on Duty of Collateral Agent in Respect of
Collateral. Beyond the exercise of reasonable care in the custody thereof, the
Collateral Agent shall have no duty as to any Collateral in its possession or
control or in the possession or control of any agent or bailee or any income
thereon or as to the preservation of rights against prior parties or any other
rights pertaining thereto. The Collateral Agent shall be deemed to have
exercised reasonable care in the custody of the Collateral in its possession if
the Collateral is accorded treatment substantially equal to that which it
accords its own property, and shall not be liable or responsible for any loss or
damage to any of the Collateral, or for any diminution in the value thereof, by
reason of the act or omission of any warehouseman, carrier, forwarding agency,
consignee or other agent or bailee selected by the Collateral Agent in good
faith.

        SECTION 9. Application of Proceeds. Upon the occurrence and during the
continuance of an Event of Default, the proceeds of any sale of, or other
realization upon, all or any part of the Collateral and any cash held in the
Collateral Account shall be applied by the Collateral Agent in the following
order of priorities:

                first, to pay the expenses of such sale or other realization,
        including reasonable compensation to agents and counsel for the
        Collateral Agent, and all expenses, liabilities and advances incurred or
        made by the Collateral Agent in connection therewith, and any other
        unreimbursed expenses for which any Secured Party is to be reimbursed
        pursuant to the Securities Purchase Agreement or Section 12 hereof;



                                       18

<PAGE>   19

                second, to pay ratably the unpaid principal of the Secured
        Obligations;

                third, to pay ratably the unpaid interest accrued on the Secured
        Obligations in accordance with the provisions of the Bridge Securities
        and this Agreement;

                fourth, to pay ratably all other Secured Obligations, until all
        Secured Obligations shall have been paid in full; and

                finally, to pay to the Company or its successors or assigns, or
        as a court of competent jurisdiction may direct, any surplus then
        remaining from such proceeds.

The Collateral Agent may make distributions hereunder in cash or in kind or, on
a ratable basis, in any combination thereof.

        SECTION 10. Concerning the Collateral Agent. (a) The Collateral Agent is
authorized to take all such action as is provided to be taken by it as
Collateral Agent hereunder and all other action reasonably incidental thereto.
As to any matters not expressly provided for herein (including, without
limitation, the timing and methods of realization upon the Collateral) the
Collateral Agent shall act or refrain from acting in accordance with written
instructions from the Required Purchasers or, in the absence of such
instructions, in accordance with its discretion.

                (b) The Collateral Agent shall not be responsible for the
        existence, genuineness or value of any of the Collateral or for the
        validity, perfection, priority or enforceability of the Security
        Interests in any of the Collateral, whether impaired by operation of law
        or by reason of any action or omission to act on its part hereunder. The
        Collateral Agent shall have no duty to ascertain or inquire as to the
        performance or observance of any of the terms of this Agreement by the
        Company.

                (c) BankAmerica Ventures and its affiliates may accept deposits
        from, lend money to, and generally engage in any kind of business with
        the Company or any subsidiary or affiliate of the Company as if it were
        not the Collateral Agent hereunder.

                (d) The obligations of the Collateral Agent hereunder are only
        those expressly set forth herein. without limiting the generality of the
        foregoing, the Collateral Agent shall not be required to take any action
        with respect to any Event of Default, except as expressly provided
        herein.



                                       19

<PAGE>   20

                (e) The Collateral Agent may consult with legal counsel,
        independent public accountants and other experts selected by it and
        shall not be liable for any action taken or omitted to be taken by it in
        good faith in accordance with the advice of such counsel, accountants or
        experts.

                (f) Neither the Collateral Agent nor any director, officer,
        agent, or employee of the Collateral Agent shall be liable for any
        action taken or not taken by it in connection herewith (i) with the
        consent or at the request of any Purchaser of any requests made in
        accordance with Section 10(a), the Required Purchaser or (ii) in the
        absence of its own gross negligence or willful misconduct. Neither the
        Collateral Agent, nor any of its affiliates, nor any of their respective
        directors, officers, agents or employees, shall be responsible for or
        have any duty to ascertain, inquire into or verify (i) any statement,
        warranty or representation made in connection with this Agreement; (ii)
        the performance or observance of any of the covenants or agreements of
        the Company; or (iii) the validity, effectiveness or genuiness of this
        Agreement or any instrument or writing furnished in connection herewith.
        The Collateral Agent shall not incur any liability by acting in reliance
        upon any notice, consent, certificate, statement, or other writing
        (which may be a bank wire, telex or similar writing) believed by it to
        be genuine or to be signed by the proper party or parties. The
        Collateral Agent shall not be responsible for the existence, genuiness
        or value of any of the Collateral. The Collateral Agent shall have no
        duty to ascertain or inquire as to the performance or observance of any
        of the terms of this Agreement by the Company.

                (g) Each Secured Party shall, ratably in accordance with the
        amount of its Obligations, indemnify the Collateral Agent, its
        affiliates and their respective directors, officers, agents and
        employees (to the extent not reimbursed by the Assignor) against any
        cost, expense (including counsel fees and disbursements), claim, demand,
        action, loss or liability (except such as result from the indemnitees'
        gross negligence or willful misconduct) that such indemnitees may suffer
        or incur in connection with this Agreement or any action taken or
        omitted by such indemnitees hereunder or thereunder.

                (h) The Collateral Agent may resign at any time by giving
        written notice of its resignation to the Secured Parties and the
        Company. Upon any such resignation, the Purchasers shall have the right
        to appoint a successor Collateral Agent (a "Successor Agent"). If no
        Successor Agent shall have been so appointed by the Purchasers, and
        shall have accepted such appointment, within 30 days after the retiring
        Security Agent's giving



                                       20

<PAGE>   21

        of notice of resignation, then the retiring Collateral Agent may, on
        behalf of the Secured Parties, appoint a Successor Agent. Upon the
        acceptance of its appointment as Collateral Agent hereunder by a
        Successor Agent, such Successor Agent shall thereupon succeed to and
        become vested with all the rights and duties of the retiring Collateral
        Agent, and the retiring Security Agent shall be discharged from its
        duties and obligations hereunder. After any retiring Collateral Agent's
        resignation hereunder as Collateral Agent, the provisions of this
        Section shall inure to its benefit as to any actions taken or omitted to
        be taken by it while it was Collateral Agent.

                (i) In order to comply with any legal requirement in any
        jurisdiction, the Collateral Agent may at any time appoint another bank
        or trust company or one or more other persons, either to act as co-agent
        or co-agents, jointly with the Collateral Agent, or to act as separate
        agent or agents on behalf of the Secured Parties with such power and
        authority as may be necessary for the effectual operation of the
        provisions hereof and may be specified in the instrument of appointment
        (which may, in the discretion of the Collateral Agent, include
        provisions for the protection of such co-agent or separate agent similar
        to the provisions of this Section 10).

                (j) Each Purchaser irrevocably appoints and authorizes the
        Collateral Agent to enter into and act as its agent in connection with
        the Financing Documents and to take such action as agent on its behalf
        and to exercise such powers under the Financing Documents as are
        delegated to it by the terms hereof or thereof, together with such
        powers as are incidental thereto.

        SECTION 11. Expenses. If the Company fails to comply with the provisions
of the Bridge Securities or this Agreement, such that the value of any
Collateral or the validity, perfection, rank or value of any Security Interest
is thereby diminished or potentially diminished or put at risk, the Collateral
Agent if requested by the Required Purchasers may, but shall not be required to,
effect such compliance on behalf of the Company, and the Company shall reimburse
the Collateral Agent for the costs thereof on demand. All insurance expenses and
all expenses of protecting, storing, warehousing, appraising, insuring,
handling, maintaining, and shipping the Collateral, any and all excise,
property, sales, and use taxes imposed by any state, federal, or local authority
on any of the Collateral, or in respect of periodic appraisals and inspections
of the Collateral to the extent the same may be requested by the Required
Purchasers from time to time, or in respect of the sale or other disposition
thereof shall be borne and paid by the Company; and if the Company fails to
promptly pay any portion thereof when



                                       21

<PAGE>   22

due, any Secured Party may, at its option, but shall not be required to, pay the
same and charge the Company's account therefor, and the Company agrees to
reimburse such Secured Party therefor on demand. All sums so paid or incurred by
any Secured Party for any of the foregoing and any and all other sums for which
the Company may become liable hereunder and all costs and expenses (including
attorneys' fees, legal expenses and court costs) reasonably incurred by any
Secured Party in enforcing or protecting the Security Interests or any of their
rights or remedies under this Agreement, shall, together with interest thereon
until paid at the rate otherwise applicable to the Bridge Securities plus 5%, be
additional Secured Obligations hereunder.

        SECTION 12. Termination of Security Interests; Release of Collateral.
Upon the repayment in full of all Secured Obligations, the Security Interests
shall terminate and all rights to the Collateral shall revert to the Company. At
any time and from time to time prior to such termination of the Security
Interests, the Collateral Agent may release any of the Collateral with the prior
written consent of the Required Purchasers. Upon any such termination of the
Security Interests or release of Collateral, the Collateral Agent will, at the
expense of the Company, execute and deliver to the Company such documents as the
Company shall reasonably request to evidence the termination of the Security
Interests or the release of such Collateral, as the case may be.

        SECTION 13. Notices. All notices, communications and distributions
hereunder shall be given in accordance with Section 9.01 of the Securities
Purchase Agreement.

        SECTION 14. Waivers, Non-Exclusive Remedies. No failure on the part of
the Collateral Agent to exercise, and no delay in exercising and no course of
dealing with respect to, any right under this Agreement shall operate as a
waiver thereof; nor shall any single or partial exercise by the Collateral Agent
of any right under the Credit Agreement or this Agreement preclude any other or
further exercise thereof or the exercise of any other right. The rights in this
Agreement and the Credit Agreement are cumulative and are not exclusive of any
other remedies provided by law.

        SECTION 15. Successors and Assigns. This Agreement is for the benefit of
the Secured Parties and their successors and assigns, and in the event of an
assignment of all or any of the Secured Obligations, the rights hereunder, to
the extent applicable to the indebtedness so assigned, shall be automatically
transferred with such indebtedness. This Agreement shall be binding on the
Company and its successors and assigns.



                                       22

<PAGE>   23

        SECTION 16. Changes in Writing. Neither this Agreement nor any provision
hereof may be changed, waived, discharged or terminated orally, but only in
writing signed by the Company and the Collateral Agent with the consent of the
Required Purchasers.

        SECTION 17. California Law. This Agreement shall be construed in
accordance with and governed by the laws of the State of California, except as
otherwise required by mandatory provisions of law and except to the extent that
remedies provided by the laws of any jurisdiction other than California are
governed by the laws of such jurisdiction.

        SECTION 18. Severability. If any provision hereof is invalid or
unenforceable in any jurisdiction, then, to the fullest extent permitted by law,
(i) the other provisions hereof shall remain in full force and effect in such
jurisdiction and shall be liberally construed in favor of the Secured Parties in
order to carry out the intentions of the parties hereto as nearly as may be
possible; and (ii) the invalidity or unenforceability of any provision hereof in
any jurisdiction shall not affect the validity or enforceability of such
provision in any other jurisdiction.



                                       23

<PAGE>   24

        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officers as of the day and year
first above written.

                                        CARDIAC PATHWAYS
                                        CORPORATION



                                        By: /s/ William N. Starling
                                           -------------------------------------
                                           Title: President and CEO



                                        BANKAMERICA VENTURES, as
                                        Collateral Agent


                                        By: /s/ Anchie Y. Kuo
                                           -------------------------------------
                                           Title: Managing Director




PURCHASERS

MORGAN STANLEY VENTURE PARTNERS III, L.P.
By:   Morgan Stanley Venture Partners III, L.L.C.
      its General Partner
By:   Morgan Stanley Venture Capital III, Inc.,
      its Institutional Managing Member


By: /s/ Fazle Husain
    ---------------------------------------------
    Title: General Partner



                                       24

<PAGE>   25


MORGAN STANLEY VENTURE INVESTORS III, L.P.
By:   Morgan Stanley Venture Partners III, L.L.C.
      its General Partner
By:   Morgan Stanley Venture Capital III, Inc.,
      its Institutional Managing Member


By: /s/ Fazle Husain
    ---------------------------------------------
    Title: General Partner



THE MORGAN STANLEY VENTURE PARTNERS
  ENTREPRENEUR FUND, L.P.
By:   Morgan Stanley Venture Partners III, L.L.C.
      its General Partner
By:   Morgan Stanley Venture Capital III, Inc.,
      its Institutional Managing Member


By: /s/ Fazle Husain
    ---------------------------------------------
    Title: General Partner



BANKAMERICA VENTURES


By: /s/ Anchie Y. Kuo
    ---------------------------------------------
    Title: Managing Director



STATE OF WISCONSIN INVESTMENT BOARD


By: /s/ John Nelson
    ---------------------------------------------
    Title: Investment Director



                                       25
<PAGE>   26

                                                                       EXHIBIT A


                             PERFECTION CERTIFICATE

        The undersigned, the chief executive officer and chief legal officer of
CARDIAC PATHWAYS CORPORATION, a Delaware corporation (the "Company"), hereby
certify with reference to the Security Agreement dated as of __________ __, 19__
between the Company and [______________________________], as Collateral Agent
(terms defined therein being used herein as therein defined), to the Secured
Parties as follows:

        1. Names. (a) The exact corporate name of the Company as it appears in
its certificate of incorporation is as follows:



        (b) Specified below is each other corporate name the Company has had
since its organization, together with the date of the relevant change:



        (c) Except as specified in Schedule 1, the Company has not changed its
identity or corporate structure in any way within the past five years.

        [Changes in identity or corporate structure would include mergers,
        consolidations and acquisitions, as well as any change in the form,
        nature or jurisdiction of corporate organization. If any such change has
        occurred, include in Schedule 1 the information required by paragraphs
        1, 2 and 3 of this certificate as to each acquiree or constituent party
        to a merger or consolidation.]

        (d) The following is a list of all other names (including trade names or
similar appellations) used by the Company or any of its divisions or other
business units at any time during the past five years:



        2. Current Locations. (a) The chief executive office of the Company is
located at the following address:


Mailing Address                              County               State
- -------------------------------------------- -------------------- --------------



<PAGE>   27

        (b) The following are all the locations where the Company maintains any
books or records relating to any Accounts:


Mailing Address                              County               State
- -------------------------------------------- -------------------- --------------



        (c) The following are all the places of business of the Company not
identified above:


Mailing Address                              County               State
- -------------------------------------------- -------------------- --------------



        (d) The following are all the locations where the Company maintains any
Inventory not identified above:


Mailing Address                              County               State
- -------------------------------------------- -------------------- --------------



        (e) The following are the names and addresses of all Persons other than
the Company which have possession of any of the Company's Inventory:


Mailing Address                              County               State
- -------------------------------------------- -------------------- --------------



                                        2
<PAGE>   28


        3. Prior Locations. (a) Specified below is the information required by
subparagraphs 2(a), 2(b) and 2(c) above with respect to each location or place
of business maintained by the Company at any time during the past five years:



        (b) Specified below is the information required by subparagraphs 2(d)
and 2(e) above with respect to each location or bailee where or with whom
Inventory has been lodged at any time during the past four months:



        4. Unusual Transactions. Except as specified in Schedule 4, all Accounts
have been originated by the Company and all Inventory and Equipment has been
acquired by the Company in the ordinary course of its business.

        5. File Search Reports. Attached hereto as Schedule 5(A) is a true copy
of a file search report from the Uniform Commercial Code filing officer in each
jurisdiction identified in paragraph 2 or 3 above with respect to each name
specified in paragraph 1 above. Attached hereto as Schedule 5(B) is a true copy
of each financing statement or other filing identified in such file search
reports.

        6. UCC Filings. A duly signed financing statement on Form UCC-1 in
substantially the form of Schedule 6(A) hereto has been duly filed in the
Uniform Commercial Code filing office in each jurisdiction identified in
paragraph 2 hereof. Attached hereto as Schedule 6(B) is a true copy of each such
filing duly acknowledged by the filing officer.

        7. Schedule of Filings. Attached hereto as Schedule 7 is a schedule
setting forth filing information with respect to the filings described in
paragraph 6 above.

        8. Filing Fees. All filing fees and taxes payable in connection with the
filings described in paragraph 6 above have been paid.



                                        3

<PAGE>   29


        IN WITNESS WHEREOF, we have hereunto set our hands this __ day of
__________, 19__.



                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:



                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:



                                        4

<PAGE>   30

                                                                   SCHEDULE 6(A)


                            DESCRIPTION OF COLLATERAL

        All accounts, chattel paper, contract rights, documents, equipment,
deposit accounts, general intangibles, inventory and investment property, now
owned or hereafter acquired, wherever located, and all proceeds thereof.



<PAGE>   31


                                                                      SCHEDULE 7


                               SCHEDULE OF FILINGS


     Debtor           Filing Officer         File Number     Date of Filing(1)
- ---------------- ------------------------    -----------  ----------------------





- --------------
(1) Indicate lapse date, if other than fifth anniversary.



<PAGE>   32


                                                                       EXHIBIT B


                         OPINION OF COUNSEL FOR COMPANY


        1. The Security Agreement creates a valid security interest, for the
benefit of the Secured Parties, in all the Company's right, title and interest
in all Collateral to the extent the UCC is applicable thereto (the "Security
Interest").

        2. UCC financing statements and amendments thereto (collectively, the
"Financing Statements") have been filed in the filing offices listed in Schedule
7 to the Perfection Certificate (the "Filing Jurisdictions"), which are all of
the offices in which filings are required to perfect the Security Interest, to
the extent the Security Interest may be perfected by filing under the UCC, and
no further filing or recording of any document or instrument or other action
will be required so to perfect the Security Interest, except that (i)
continuation statements with respect to each Financing Statement must be filed
within the respective time periods specified in Schedule 7 to the Perfection
Certificate; (ii) additional filings may be necessary if the Company changes its
name, identity or corporate structure or the jurisdiction in which its places of
business, its chief executive office or the Collateral are located; and (iii) we
express no opinion on the perfection of, or need for further filing or recording
to perfect, the Security Interest in goods now or hereafter located in any
jurisdiction other than the Filing Jurisdictions.

        3. There are

                (a) no UCC financing statements which name the Company as debtor
        or seller and cover any of the Collateral, other than the Financing
        Statements, [and the financing statements with respect to Permitted
        Liens annexed as Schedule 5(A) to the Perfection Certificate], listed in
        the available records in the UCC filing offices specified in paragraphs
        2 and 3 of the Perfection Certificate, which include all of the offices
        prescribed under the UCC as the offices in which filings should have
        been made to perfect security interests in the Collateral; and

                (b) no notices of the filing of any federal tax lien (filed
        pursuant to Section 6323 of the Internal Revenue Code) or any lien of
        the Pension Benefit Guaranty Corporation (filed pursuant to Section 4068
        of ERISA) covering any of the Collateral listed in the available records
        in the [UCC filing office in state of Company's chief executive office],
        which is the only office having files which must be searched in order to
        fully determine



<PAGE>   33


        the existence of notices of the filing of federal tax liens (filed
        pursuant to Section 6323 of the Internal Revenue Code) and liens of the
        Pension Benefit Guaranty Corporation (filed pursuant to Section 4068 of
        ERISA) on the Collateral.

        4. The Security Interest validly secures the payment of all future Loans
made by the Lenders to the Company, whether or not at the time such Loans are
made an Event of Default or other event not within the control of the Lenders
has relieved or may relieve the Lenders from their obligations to make such
Loans, and is perfected to the extent specified in paragraph 7 above with
respect to such future Loans. Insofar as the priority thereof is governed by the
UCC, the Security Interest has the same priority with respect to such future
Loans as it does with respect to Loans made on the date hereof.



                                        2

<PAGE>   34

                                                                       EXHIBIT C

                            [FORM OF LOCKBOX LETTER]

                                                          _____________ __, 19__

[Name and Address of Lockbox Bank]

         Re:      Cardiac Pathway Corporation

Gentlemen:

        We hereby notify you that effective ___________, 19__, we have
transferred exclusive ownership and control of our lock-box account[s] No[s].
_________________ (the "Lockbox Account[s]") maintained with you under the terms
of the [Lockbox Agreement] attached hereto as Exhibit A (the "Lockbox
Account[s]") to [______________________________], as Collateral Agent (the
"Collateral Agent").

        We hereby irrevocably instruct you to make all payments to be made by
you out of or in connection with the Lockbox Account[s] (i) to the Collateral
Agent for credit to account no. ___________ maintained by it at its office at
[___________________] or (ii) as you may otherwise be instructed by the
Collateral Agent.

        We also hereby notify you that the Collateral Agent shall be irrevocably
entitled to exercise any and all rights in respect of or in connection with the
Lockbox Account[s], including, without limitation, the right to specify when
payments are to be made out of or in connection with the Lockbox Account[s].

        All funds deposited into the Lockbox Account[s] will not be subject to
deductions, set-off, banker's lien or any other right in favor of any other
person than the Collateral Agent, except that you may set-off against the
Lockbox Account[s] the face amount of any check deposited in and credited to
such Lockbox Account[s] which is subsequently returned for any reason. Your
compensation for providing the services contemplated herein shall be as mutually
agreed between you and us from time to time and we will continue to pay such
compensation.



<PAGE>   35


        Please confirm your acknowledgment of and agreement to the foregoing
instructions by signing in the space provided below.

                                        Very truly yours,

                                        CARDIAC PATHWAYS CORPORATION



                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:


Acknowledged and agreed to as of
this ____ day of ______, 19__.


[LOCKBOX BANK]



By:
   -------------------------------------
   Name:
   Title:



                                        2

<PAGE>   36

                                                                       EXHIBIT D


                            PATENT SECURITY AGREEMENT

               (PATENTS, PATENT APPLICATIONS AND PATENT LICENSES)

        WHEREAS, Cardiac Pathways Corporation, a Delaware corporation (herein
referred to as "Grantor"), owns the Patents listed on Schedule 1 annexed hereto,
and is a party to the Patent Licenses listed on Schedule 1 annexed hereto;

        WHEREAS, the Grantor and the purchasers listed therein are parties to a
Securities Purchase Agreement of even date herewith (as the same may be amended
and in effect from time to time among said parties and such lenders (the
"Lenders") as may from time to time be parties thereto, the "Securities Purchase
Agreement"), pursuant to which the Grantor has agreed to issue certain Senior
Convertible Floating Rate Bridge Notes (the "Bridge Securities");

        WHEREAS, pursuant to the terms of the Security Agreement of even date
herewith (as said Agreement may be amended and in effect from time to time, the
"Security Agreement") between Grantor, and BankAmerica Ventures, as collateral
agent for the secured parties referred to therein (in such capacity, together
with its successors in such capacity pursuant to the terms of such Security
Agreement, the "Grantee"), Grantor has granted to Grantee for the ratable
benefit of such secured parties a security interest in substantially all the
assets of the Grantor including all right, title and interest of Grantor in, to
and under all Grantor's Patents (as defined in the Security Agreement), together
with any reissue, continuation, continuation-in-part or extension thereof, all
Grantor's Patent applications and all Grantor's Patent Licenses (as defined in
the Security Agreement), whether presently existing or hereafter arising or
acquired, and all products and proceeds thereof, including any and all causes of
action which may exist by reason of infringement thereof for the full term of
the Patents, to secure the payment of all amounts owing by the Grantor under the
Bridge Securities issued pursuant to Securities Purchase Agreement and the other
Financing Documents referred to therein;

        NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Grantor does hereby grant to
Grantee a continuing security interest in all of Grantor's right, title and
interest in, to and under the following (all of the following items or types of
property being herein collectively referred to as the "Patent Collateral"),
whether presently existing or hereafter arising or acquired:



                                        3
<PAGE>   37


                (i) each Patent and Patent application, including each Patent
        and Patent application referred to in Schedule 1 annexed hereto;

                (ii) each Patent License, including each Patent License listed
        on Schedule 1 annexed hereto; and

                (iii) all products and proceeds of the foregoing, including any
        claim by Grantor against third parties for past, present or future in
        Schedule 1 annexed hereto, and any Patent licensed under any Patent
        License, including any Patent License listed on Schedule 1 annexed
        hereto.

        This security interest is granted in conjunction with the security
interests granted to the Grantee pursuant to the Security Agreement. Grantor
does hereby further acknowledge and affirm that the rights and remedies of
Grantee with respect to the security interest in the Patent Collateral made and
granted hereby are more fully set forth in the Security Agreement, the terms and
provisions of which are incorporated by reference herein as if fully set forth
herein.

        IN WITNESS WHEREOF, Grantor has caused this Patent Security Agreement to
be duly executed by its officer thereunto duly authorized as of the _______th
day of ____________, ____.


                                        CARDIAC PATHWAYS CORPORATION


                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

Acknowledged:

BANKAMERICA VENTURES,
  as Collateral Agent

By:
   -------------------------------------
   Name:
   Title:



                                        4

<PAGE>   38


STATE OF________________)
                        ):ss.:
COUNTY OF______________ )



        On the ___th day of ____________, ____ before me personally came
____________, to me personally known and known to me to be the person described
in and who executed the foregoing instrument as _____________ of Cardiac
Pathways Corporation, who being by me duly sworn, did depose and say that he
resides at ____________, ____________; that he is ________________ of Cardiac
Pathways Corporation, the corporation described in and which executed the
foregoing instrument; that he knows the seal of said corporation; that the seal
affixed to said instrument is such corporate seal; that the said instrument was
signed and sealed on behalf of said corporation by order of its Board of
Directors; that he signed his name thereto by like order; and that he
acknowledged said instrument to be the free act and deed of said corporation.




                                        ----------------------------------------
                                        Notary Public



Notary Public, State of New York


My commission expires:

- -------------------------


                                        5
<PAGE>   39

                                                                      SCHEDULE 1


                          INTELLECTUAL PROPERTY RIGHTS


<PAGE>   40


                                                                       EXHIBIT E


                          TRADEMARK SECURITY AGREEMENT

                       (TRADEMARKS, TRADEMARK APPLICATIONS
                             AND TRADEMARK LICENSES)

                WHEREAS, Cardiac Pathways Corporation, a Delaware corporation
(herein referred to as "Grantor"), owns the Trademarks listed on Schedule 1
annexed hereto, and is a party to the Trademark Licenses listed on Schedule 1
annexed hereto;

                WHEREAS, the Grantor and the purchasers listed therein are
parties to a Securities Purchase Agreement of even date herewith (as the same
may be amended and in effect from time to time among said parties and such
lenders (the "Lenders") as may from time to time be parties thereto, the
"Securities Purchase Agreement"), pursuant to which the Grantor has agreed to
issue certain Senior Convertible Floating Rate Bridge Notes (the "Bridge
Securities");

                WHEREAS, pursuant to the terms of the Security Agreement of even
date herewith (as said Agreement may be amended and in effect from time to time,
the "Security Agreement") between Grantor, and BankAmerica Ventures, as
collateral agent for the secured parties referred to therein (in such capacity,
together with its successors in such capacity pursuant to the terms of such
Security Agreement, the "Grantee"), Grantor has granted to Grantee for the
ratable benefit of such secured parties a security interest in substantially all
the assets of the Grantor including all right, title and interest of Grantor in,
to and under all Grantor's Trademarks (as defined in the Security Agreement),
together with any reissue, continuation, continuation-in-part or extension
thereof, all Grantor's Trademark applications and all Grantor's Trademark
Licenses (as defined in the Security Agreement), whether presently existing or
hereafter arising or acquired, together with the goodwill of the business
connected with the use of, or symbolized by, the Trademarks and the applications
therefor and the registrations thereof, and all products and proceeds thereof,
including any and all causes of action which may exist by reason of infringement
or dilution thereof or injury to the associated goodwill, for the full term of
the Trademarks, to secure the payment of all amounts owing by the Grantor under
the Financing Documents;

                NOW, THEREFORE, for good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged, Grantor does hereby grant to
Grantee a continuing security interest in all of Grantor's right, title and



                                        2
<PAGE>   41


interest in, to and under the following (all of the following items or types of
property being herein collectively referred to as the "Trademark Collateral"),
whether presently existing or hereafter arising or acquired:

                (i) each Trademark, including each Trademark application
        referred to in Schedule 1 annexed hereto, and all of the goodwill of the
        business connected with the use of, or symbolized by, each such
        Trademark;

                (ii) each Trademark License, including each Trademark License
        listed on Schedule 1 annexed hereto, and all of the goodwill of the
        business connected with the use of, or symbolized by, each such
        Trademark licensed pursuant thereto; and

                (iii) all products and proceeds of the foregoing, including any
        claim by Grantor against third parties for past, present or future
        infringement or dilution of any Trademark, including any Trademark
        referred to in Schedule 1 annexed hereto, and any Trademark licensed
        under any Trademark License, including any Trademark License listed on
        Schedule 1 annexed hereto, or for injury to the goodwill associated with
        any of the foregoing.

        This security interest is granted in conjunction with the security
interests granted to the Grantee pursuant to the Security Agreement. Grantor
does hereby further acknowledge and affirm that the rights and remedies of
Grantee with respect to the security interest in the Trademark Collateral made
and granted hereby are more fully set forth in the Security Agreement, the terms
and provisions of which are incorporated by reference herein as if fully set
forth herein.



                                        3
<PAGE>   42


        IN WITNESS WHEREOF, Grantor has caused this Trademark Security Agreement
to be duly executed by its officer thereunto duly authorized as of the __th day
of __________ __, ____.


                                        CARDIAC PATHWAYS CORPORATION



                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

Acknowledged:

BANKAMERICA VENTURES,
  as Collateral Agent


By:
   -------------------------------------
   Name:
   Title:



                                        4

<PAGE>   43



STATE OF NEW YORK    )
                     ): ss.:
COUNTY OF NEW YORK   )


        On the __th day of ___________, ____ before me personally came _______
________, to me personally known and known to me to be the person described in
and who executed the foregoing instrument as [_____________] of Cardiac Pathways
Corporation, who being by me duly sworn, did depose and say that he resides at
________________, _______________; that he is [____________] of Cardiac Pathways
Corporation, the corporation described in and which executed the foregoing
instrument; that he knows the seal of said corporation; that the seal affixed to
said instrument is such corporate seal; that the said instrument was signed and
sealed on behalf of said corporation by order of its Board of Directors; that he
signed his name thereto by like order; and that he acknowledged said instrument
to be the free act and deed of said corporation.




                                        ----------------------------------------
                                        Notary Public



Notary Public, State of New York


My commission expires:

- ----------------------



                                        5
<PAGE>   44



                                                                   Schedule 1 to
                                                    Trademark Security Agreement


                     TRADEMARKS AND TRADEMARK REGISTRATIONS

                 Trademark               Reg. No.          Reg. Date









                             TRADEMARK APPLICATIONS


<TABLE>
<CAPTION>
Mark           Date Filed                                    Serial No.
- ----           ----------                                    ----------
<S>            <C>                                           <C>
</TABLE>


                               TRADEMARK LICENSES


<TABLE>
<CAPTION>
                  Agreement     Parties     Date of Agreement     Subject Matter
                  ---------     -------     -----------------     --------------
<S>               <C>           <C>         <C>                   <C>
</TABLE>

As Licensee
- -----------


As Licensor
- -----------




<PAGE>   1

                                                                       EXHIBIT 5

                          CARDIAC PATHWAYS CORPORATION







                      WARRANT FOR THE PURCHASE OF SHARES OF
                 PREFERRED STOCK OF CARDIAC PATHWAYS CORPORATION


No. ____                                                     Warrant to Purchase
                                                                _________ Shares


        THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
        AS AMENDED, OR ANY STATE SECURITIES LAWS AND MAY NOT BE OFFERED OR SOLD
        EXCEPT IN COMPLIANCE THEREWITH. NOTWITHSTANDING ANY OTHER PROVISIONS
        CONTAINED HEREIN, NO TRANSFER, HYPOTHECATION OR OTHER DISPOSITION OF
        THIS WARRANT OR OF THE COMMON STOCK ISSUABLE UPON EXERCISE OF THIS
        WARRANT, OR OF ANY INTEREST IN EITHER THEREOF, INCLUDING ANY EXERCISE OF
        THIS WARRANT IN FAVOR OF ANY PERSON OTHER THAN THE HOLDER OR ANY
        AFFILIATE THEREOF, SHALL BE VALID OR EFFECTIVE UNLESS REGISTERED UNDER
        THE SECURITIES ACT OF 1933, AS AMENDED OR UNLESS AN EXEMPTION FROM
        REGISTRATION IS AVAILABLE.

        FOR VALUE RECEIVED, CARDIAC PATHWAYS CORPORATION, a Delaware corporation
(the "Company"), hereby certifies that [HOLDER], its successor or permitted
assigns (the "Holder"), is entitled, subject to the provisions of this Warrant,
to purchase from the Company, at the times specified herein, _________ fully
paid and non-assessable shares of Preferred Stock of the Company, par value
$0.001 per share (the "Common Stock"), at a purchase price per share equal to
the Exercise Price (as hereinafter defined). The number of shares of Common
Stock to be received upon the exercise of this Warrant and the price to be paid
for a share of Common Stock are subject to adjustment from time to time as
hereinafter set forth.



<PAGE>   2


        1. Definitions. (a) The following terms, as used herein, have the
following meanings:

        "Affiliate" shall have the meaning given to such term in Rule 12b-2
promulgated under the Securities and Exchange Act of 1934, as amended.

        "Business Day" means any day except a Saturday, Sunday or other day on
which commercial banks in San Francisco and the City of New York are authorized
by law to close.

        "Certificate of Designation" means the Certificate of Designation of the
Issuer substantially in the form of Exhibit B to the Securities Purchase
Agreement.

        "Common Stock" means the Common Stock, par value $.001 per share, of the
Company.

        "Current Market Price Per Preferred Share" shall have the meaning set
forth in Section 8(f).

        "Duly Endorsed" means duly endorsed in blank by the Person or Persons in
whose name a stock certificate is registered or accompanied by a duly executed
stock assignment separate from the certificate with the signature(s) thereon
guaranteed by a commercial bank or trust company or a member of a national
securities exchange or of the National Association of Securities Dealers, Inc.

        "Exercise Price" means the product of 1,000 and (i) in the case of
Warrants issued on the Closing Date (as defined in the Securities Purchase
Agreement), $1.00 or (ii) in the case of Warrants issued in connection with the
delivery of an Acceleration Notice (as defined in the Bridge Securities), the
average of the trading price of the Common Stock, as reported on the Nasdaq
National Market for the 10 Business Days immediately preceding the delivery of
such Acceleration Notice, such Exercise Price to be adjusted from time to time
as provided herein.

        "Expiration Date" means May 31, 2004 at 5:00 p.m. New York City time.

        "Person" means an individual, partnership, limited liability company,
corporation, trust, joint stock company, association, joint venture, or any
other entity or organization, including a government or political subdivision or
an agency or instrumentality thereof.



                                        2

<PAGE>   3

        "Preferred Stock" means the Series B Convertible Preferred Stock of the
Company as set forth in the Certificate of Designation.

        "Principal Holder" means the original Holder of this Warrant on the date
of issue, or if such original Holder so elects, any transferee of all or any
portion of this Warrant whom such original Holder shall have designated by
written notice to the Company as the successor Principal Holder. Any successor
Principal Holder designated pursuant to the immediately preceding sentence shall
also have the right upon any subsequent transfer to designate a successor
Principal Holder in the manner described above.

        "Securities Purchase Agreement" means the Securities Purchase Agreement
dated as of May 20, 1999 among the Company and the Securityholders listed on the
signature pages thereto, providing for the purchase and issuance of the Bridge
Securities and this Warrant.

        "Warrant Shares" means the shares of Preferred Stock deliverable upon
exercise of this Warrant, as adjusted from time to time.

                (b) Capitalized terms used but not defined herein shall have the
meanings assigned to such terms in the Securities Purchase Agreement.

        2. Exercise of Warrant.

                (a) The Holder is entitled to exercise this Warrant in whole or
        in part at any time, or from time to time, until the Expiration Date or,
        if such day is not a Business Day, then on the next succeeding day that
        shall be a Business Day. To exercise this Warrant, the Holder shall
        execute and deliver to the Company a Warrant Exercise Notice
        substantially in the form annexed hereto. No earlier than ten days after
        delivery of the Warrant Exercise Notice, the Holder shall deliver to the
        Company this Warrant Certificate, including the Warrant Exercise
        Subscription Form forming a part hereof duly executed by the Holder,
        together with payment of the applicable Exercise Price or an election of
        net issuance of Warrant Shares. Upon such delivery and payment or
        election of net issuance, the Holder shall be deemed to be the holder of
        record of the Warrant Shares subject to such exercise or election,
        notwithstanding that the stock transfer books of the Company shall then
        be closed or that certificates representing such Warrant Shares shall
        not then be actually delivered to the Holder.

                (b) In the event of cash exercise by the Holder, the Exercise
        Price may be paid in cash or by certified or official bank check or bank
        cashier's check payable to the order of the Company or by any



                                        3

<PAGE>   4

        combination of such cash or check. The Company shall pay any and all
        documentary, stamp or similar issue or transfer taxes payable in respect
        of the issue or delivery of the Warrant Shares. In the event of election
        by the Holder of net issuance of the Warrant Shares, the Company, upon
        receipt of notice of election of net issuance, shall issue to the Holder
        a number of shares of Preferred Stock having an aggregate Current Market
        Price Per Preferred Share equal to the aggregate Current Market Price
        Per Preferred Share of the Warrant Shares issuable upon exercise less
        the aggregate Exercise Price for such Warrant Shares.

                (c) If the Holder exercises this Warrant in part, this Warrant
        Certificate shall be surrendered by the Holder to the Company and a new
        Warrant Certificate of the same tenor and for the unexercised number of
        Warrant Shares shall be executed by the Company. The Company shall
        register the new Warrant Certificate in the name of the Holder or in
        such name or names of its transferee pursuant to paragraph 6 hereof as
        may be directed in writing by the Holder and deliver the new Warrant
        Certificate to the Person or Persons entitled to receive the same.

                (d) Upon surrender of this Warrant Certificate in conformity
        with the foregoing provisions, the Company shall transfer to the Holder
        of this Warrant Certificate appropriate evidence of ownership of the
        shares of Preferred Stock or other securities or property (including any
        money) to which the Holder is entitled, registered or otherwise placed
        in, or payable to the order of, the name or names of the Holder or such
        transferee as may be directed in writing by the Holder, and shall
        deliver such evidence of ownership and any other securities or property
        (including any money) to the Person or Persons entitled to receive the
        same, together with an amount in cash in lieu of any fraction of a share
        as provided in paragraph 5 below.

        3. Restrictive Legend. Certificates representing shares of Preferred
Stock issued pursuant to this Warrant shall bear a legend substantially in the
form of the legend set forth on the first page of this Warrant Certificate to
the extent that and for so long as such legend is required pursuant to the
Securities Purchase Agreement.

        4. Reservation of Shares. The Company hereby agrees that at all times
there shall be reserved for issuance and delivery upon exercise of this Warrant
such number of its authorized but unissued shares of Preferred Stock or other
securities of the Company from time to time issuable upon exercise of this
Warrant as will be sufficient to permit the exercise in full of this Warrant.
All such shares shall be duly authorized and, when issued upon such exercise,
shall be



                                        4

<PAGE>   5

validly issued, fully paid and non-assessable, free and clear of all liens,
security interests, charges and other encumbrances or restrictions on sale and
free and clear of all preemptive rights, except to the extent set forth in the
Preferred Stock Purchase Agreement.

        5. Fractional Shares. No fractional shares or scrip representing
fractional shares shall be issued upon the exercise of this Warrant and in lieu
of delivery of any such fractional share upon any exercise hereof, the Company
shall pay to the Holder an amount in cash equal to such fraction multiplied by
the Current Market Price Per Preferred Share at the date of such exercise.

        6. Exchange, Transfer or Assignment of Warrant.

                (a) This Warrant Certificate and all rights hereunder are not
        transferable by the registered holder hereof except to any Person who,
        prior to such transfer, agrees in writing, in form and substance
        reasonably satisfactory to the Company, to be bound by the terms of the
        Securities Purchase Agreement in accordance with the provisions thereof.
        Each taker and holder of this Warrant Certificate by taking or holding
        the same, consents and agrees that the registered holder hereof may be
        treated by the Company and all other persons dealing with this Warrant
        Certificate as the absolute owner hereof for any purpose and as the
        person entitled to exercise the rights represented hereby.

                (b) Subject to compliance with the Securities Purchase
        Agreement, the Holder of this Warrant shall be entitled, without
        obtaining the consent of the Company to assign and transfer this
        Warrant, at any time in whole or from time to time in part, to any
        Person or Persons. Subject to the preceding sentence, upon surrender of
        this Warrant to the Company, together with the attached Warrant
        Assignment Form duly executed, the Company shall, without charge,
        execute and deliver a new Warrant in the name of the assignee or
        assignees named in such instrument of assignment and, if the Holder's
        entire interest is not being assigned, in the name of the Holder and
        this Warrant shall promptly be canceled.

        7. Loss or Destruction of Warrant. Upon receipt by the Company of
evidence satisfactory to it (in the exercise of its reasonable discretion) of
the loss, theft, destruction or mutilation of this Warrant Certificate, and (in
the case of loss, theft or destruction) of reasonably satisfactory
indemnification, and upon surrender and cancellation of this Warrant
Certificate, if mutilated, the Company shall execute and deliver a new Warrant
Certificate of like tenor and date.



                                        5

<PAGE>   6


        8. Anti-dilution Provisions.

                (a) In case the Company shall at any time after the date hereof
        (i) declare a dividend or make a distribution on Preferred Stock payable
        in Preferred Stock, (ii) subdivide or split the outstanding Preferred
        Stock, (iii) combine or reclassify the outstanding Preferred Stock into
        a smaller number of shares, or (iv) issue any shares of its capital
        stock in a reclassification of Preferred Stock (including any such
        reclassification in connection with a consolidation or merger in which
        the Company is the continuing corporation), the Exercise Price in effect
        at the time of the record date for such dividend or distribution or of
        the effective date of such subdivision, split, combination or
        reclassification shall be proportionately adjusted so that, giving
        effect to paragraph 8(i), the exercise of this Warrant after such time
        shall entitle the holder to receive the aggregate number of shares of
        Preferred Stock or other securities of the Company (or shares of any
        security into which such shares of Preferred Stock have been
        reclassified pursuant to clause 8(a)(iii) or 8(a)(iv) above) which, if
        this Warrant had been exercised immediately prior to such time, such
        holder would have owned upon such exercise and been entitled to receive
        by virtue of such dividend, distribution, subdivision, split,
        combination or reclassification. Such adjustment shall be made
        successively whenever any event listed above shall occur.

                (b) In case the Company shall issue or sell any Preferred Stock
        (other than Preferred Stock issued (i) upon exercise of the Warrants,
        (ii) pursuant to any Preferred Stock related employee compensation plan
        of the Company approved by the Company's Board of Directors or (iii)
        upon exercise or conversion of any security the issuance of which caused
        an adjustment under paragraphs 8(c) or 8(d) hereof) without
        consideration or for a consideration per share less than the Current
        Market Price Per Preferred Share, the Exercise Price to be in effect
        after such issuance or sale shall be determined by multiplying the
        Exercise Price in effect immediately prior to such issuance or sale by a
        fraction, the numerator of which shall be the sum of (x) the number of
        shares of Preferred Stock outstanding immediately prior to the time of
        such issuance or sale multiplied by the Current Market Price Per
        Preferred Share immediately prior to such issuance or sale and (y) the
        aggregate consideration, if any, to be received by the Company upon such
        issuance or sale, and the denominator of which shall be the product of
        the aggregate number of shares of Preferred Stock outstanding
        immediately after such issuance or sale and the Current Market Price Per
        Preferred Share immediately prior to such issuance or sale. In case any
        portion of the consideration to be received by the Company shall be in a
        form other than cash, the fair



                                        6

<PAGE>   7


        market value of such noncash consideration shall be utilized in the
        foregoing computation. Such fair market value shall be determined by the
        Board of Directors of the Company; provided that if the Principal Holder
        shall object to any such determination, the Board of Directors shall
        retain an independent appraiser reasonably satisfactory to the Principal
        Holder to determine such fair market value. The Holder shall be notified
        promptly of any consideration other than cash to be received by the
        Company and furnished with a description of the consideration and the
        fair market value thereof, as determined by the Board of Directors.

                (c) In case the Company shall fix a record date for the issuance
        of rights, options or warrants to the holders of its Preferred Stock or
        other securities entitling such holders to subscribe for or purchase for
        a period expiring within 60 days of such record date shares of Preferred
        Stock (or securities convertible into share of Preferred Stock) at a
        price per share of Preferred Stock (or having a conversion price per
        share of Preferred Stock, if a security convertible into shares of
        Preferred Stock) less than the Current Market Price Per Preferred Share
        on such record date, the maximum number of shares of Preferred Stock
        issuable upon exercise of such rights, options or warrants (or
        conversion of such convertible securities) shall be deemed to have been
        issued and outstanding as of such record date and the Exercise Price
        shall be adjusted pursuant to paragraph 8(b) hereof, as though such
        maximum number of shares of Preferred Stock had been so issued for an
        aggregate consideration payable by the holders of such rights, options,
        warrants or convertible securities prior to their receipt of such shares
        of Preferred Stock. In case any portion of such consideration shall be
        in a form other than cash, the fair market value of such noncash
        consideration shall be determined as set forth in paragraph 8(b) hereof.
        Such adjustment shall be made successively whenever such record date is
        fixed; and in the event that such rights, options or warrants are not so
        issued or expire unexercised, or in the event of a change in the number
        of shares of Preferred Stock to which the holders of such rights,
        options or warrants are entitled (other than pursuant to adjustment
        provisions therein comparable to those contained in this paragraph 8),
        the Exercise Price shall again be adjusted to be the Exercise Price
        which would then be in effect if such record date had not been fixed, in
        the former event, or the Exercise Price which would then be in effect if
        such holder had initially been entitled to such changed number of shares
        of Preferred Stock, in the latter event.

                (d) In case the Company shall issue rights, options (other than
        options issued pursuant to a plan described in clause 8(b)(i)) or
        warrants entitling the holders thereof to subscribe for or purchase
        Preferred Stock



                                        7

<PAGE>   8

        (or securities convertible into shares of Preferred Stock) or shall
        issue convertible securities, and the price per share of Preferred Stock
        of such rights, options, warrants or convertible securities (including,
        in the case of rights, options or warrants, the price at which they may
        be exercised) is less than the Current Market Price Per Preferred Share,
        the maximum number of shares of Preferred Stock issuable upon exercise
        of such rights, options or warrants or upon conversion of such
        convertible securities shall be deemed to have been issued and
        outstanding as of the date of such sale or issuance, and the Exercise
        Price shall be adjusted pursuant to paragraph 8(b) hereof as though such
        maximum number of shares of Preferred Stock had been so issued for an
        aggregate consideration equal to the aggregate consideration paid for
        such rights, options, warrants or convertible securities and the
        aggregate consideration payable by the holders of such rights, options,
        warrants or convertible securities prior to their receipt of such shares
        of Preferred Stock. In case any portion of such consideration shall be
        in a form other than cash, the fair market value of such noncash
        consideration shall be determined as set forth in paragraph 8(b) hereof.
        Such adjustment shall be made successively whenever such rights,
        options, warrants or convertible securities are issued; and in the event
        that such rights, options or warrants expire unexercised, or in the
        event of a change in the number of shares of Preferred Stock to which
        the holders of such rights, options, warrants or convertible securities
        are entitled (other than pursuant to adjustment provisions therein
        comparable to those contained in this paragraph 8), the Exercise Price
        shall again be adjusted to be the Exercise Price which would then be in
        effect if such rights, options, warrants or convertible securities had
        not been issued, in the former event, or the Exercise Price which would
        then be in effect if such holders had initially been entitled to such
        changed number of shares of Preferred Stock, in the latter event. No
        adjustment of the Exercise Price shall be made pursuant to this
        paragraph 8(d) to the extent that the Exercise Price shall have been
        adjusted pursuant to paragraph 8(c) upon the setting of any record date
        relating to such rights, options, warrants or convertible securities and
        such adjustment fully reflects the number of shares of Preferred Stock
        to which the holders of such rights, options, warrants or convertible
        securities are entitled and the price payable therefor.

                (e) In case the Company shall fix a record date for the making
        of a distribution to holders of Preferred Stock (including any such
        distribution made in connection with a consolidation or merger in which
        the Company is the continuing corporation) of evidences of indebtedness,
        assets or other property (other than dividends payable in Preferred
        Stock or rights, options or warrants referred to in, and for which an
        adjustment is made pursuant to, paragraph 8(c) hereof), the Exercise
        Price to be in effect



                                        8

<PAGE>   9

        after such record date shall be determined by multiplying the Exercise
        Price in effect immediately prior to such record date by a fraction, the
        numerator of which shall be the Current Market Price Per Preferred Share
        on such record date, less the fair market value (determined as set forth
        in paragraph 8(b) hereof) of the portion of the assets, other property
        or evidence of indebtedness so to be distributed which is applicable to
        one share of Preferred Stock, and the denominator of which shall be such
        Current Market Price Per Preferred Share. Such adjustments shall be made
        successively whenever such a record date is fixed; and in the event that
        such distribution is not so made, the Exercise Price shall again be
        adjusted to be the Exercise Price which would then be in effect if such
        record date had not been fixed.

                (f) For the purpose of any computation under paragraph 5 or
        paragraph 8(b), 8(c), 8(d) or 8(e) hereof, on any determination date the
        Current Market Price Per Preferred Share shall be deemed to be the
        average (weighted by daily trading volume) of the Daily Prices (as
        defined below) per share of the applicable class of Common Stock into
        which the Preferred stock is convertible for the 20 consecutive trading
        days immediately prior to such date. "Daily Price" means the last
        reported sale price on such day on the National Market of the NASDAQ
        Stock Market ("NASDAQ"); or (A) if the shares of such class of Common
        Stock then are not traded on the NASDAQ National Market, the average of
        the highest reported bid and lowest reported asked price on such day as
        reported by NASDAQ. If on any determination date the shares of such
        class of Common Stock are not quoted by any such organization, the
        Current Market Price Per Price Share shall be the fair market value of
        such shares of Common Stock on such determination date as determined by
        the Board of Directors. If the Principal Holder shall object to any
        determination by the Board of Directors of the Current Market Price Per
        Preferred Share, the Current Market Price Per Preferred Share shall be
        the fair market value per share of the applicable class of Common Stock
        as determined by an independent appraiser retained by the Company at its
        expense and reasonably acceptable to the Principal Holder. For purposes
        of any computation under this paragraph 8, the number of shares of
        Preferred Stock outstanding at any given time shall not include shares
        owned or held by or for the account of the Company.

                (g) No adjustment in the Exercise Price shall be required unless
        such adjustment would require an increase or decrease of at least one
        percent in such price; provided that any adjustments which by reason of
        this paragraph 8(g) are not required to be made shall be carried forward
        and taken into account in any subsequent adjustment. All calculations



                                        9

<PAGE>   10


        under this paragraph 8 shall be made to the nearest one tenth of a cent
        or to the nearest hundredth of a share, as the case may be.

                (h) In the event that, at any time as a result of the provisions
        of this paragraph 8, the holder of this Warrant upon subsequent exercise
        shall become entitled to receive any shares of capital stock of the
        Company other than Preferred Stock, the number of such other shares so
        receivable upon exercise of this Warrant shall thereafter be subject to
        adjustment from time to time in a manner and on terms as nearly
        equivalent as practicable to the provisions contained herein.

                (i) Upon each adjustment of the Exercise Price as a result of
        the calculations made in paragraphs 8(a), 8(b), 8(c), 8(d) or 8(e)
        hereof, the number of shares for which this Warrant is exercisable
        immediately prior to the making of such adjustment shall thereafter
        evidence the right to purchase, at the adjusted Exercise Price, that
        number of shares of Preferred Stock obtained by (i) multiplying the
        number of shares covered by this Warrant immediately prior to this
        adjustment of the number of shares by the Exercise Price in effect
        immediately prior to such adjustment of the Exercise Price and (ii)
        dividing the product so obtained by the Exercise Price in effect
        immediately after such adjustment of the Exercise Price.

        9. Consolidation, Merger, or Sale of Assets. In case of any
consolidation of the Company with, or merger of the Company into, any other
Person, any merger of another Person into the Company (other than a merger which
does not result in any reclassification, conversion, exchange or cancellation of
outstanding shares of Preferred Stock or Common Stock) or any sale or transfer
of all or substantially all of the assets of the Company or of the Person formed
by such consolidation or resulting from such merger or which acquires such
assets, as the case may be, the Holder shall have the right thereafter to
exercise this Warrant for the kind and amount of securities, cash and other
property receivable upon such consolidation, merger, sale or transfer by a
holder of the number of shares of Preferred Stock for which this Warrant may
have been exercised immediately prior to such consolidation, merger, sale or
transfer, assuming (i) such holder of Preferred Stock is not a Person with which
the Company consolidated or into which the Company merged or which merged into
the Company or to which such sale or transfer was made, as the case may be
("constituent Person"), or an Affiliate of a constituent Person and (ii) in the
case of a consolidation merger, sale or transfer which includes an election as
to the consideration to be received by the holders, such holder of Preferred
Stock failed to exercise its rights of election, as to the kind or amount of
securities, cash and other property receivable upon such consolidation, merger,
sale or transfer (provided that if the kind or amount of securities, cash and
other property receivable upon such consolidation, merger,



                                       10

<PAGE>   11


sale or transfer is not the same for each share of Preferred Stock held
immediately prior to such consolidation, merger, sale or transfer by other than
a constituent Person or an Affiliate thereof and in respect of which such rights
of election shall not have been exercised ("non-electing share"), then for the
purpose of this paragraph 9 the kind and amount of securities, cash and other
property receivable upon such consolidation, merger, sale or transfer by each
non-electing share shall be deemed to be the kind and amount so receivable per
share by a plurality of the non-electing shares). Adjustments for events
subsequent to the effective date of such a consolidation, merger and sale of
assets shall be as nearly equivalent as may be practicable to the adjustments
provided for in this Warrant. In any such event, effective provisions shall be
made in the certificate or articles of incorporation of the resulting or
surviving corporation, in any contract of sale, conveyance, lease or transfer,
or otherwise so that the provisions set forth herein for the protection of the
rights of the Holder shall thereafter continue to be applicable; and any such
resulting or surviving corporation shall expressly assume the obligation to
deliver, upon exercise, such shares of stock, other securities, cash and
property. The provisions of this paragraph 9 shall similarly apply to successive
consolidations, mergers, sales, leases or transfers.

        10. Notices. Any notice, demand or delivery authorized by this Warrant
Certificate shall be in writing and shall be given to the Holder, the Company or
the Shareholder Representative, as the case may be, at its address (or
telecopier number) set forth below, or such other address (or telecopier number)
as shall have been furnished to the party giving or making such notice, demand
or delivery:

        If to the Company:

                  Cardiac Pathways Corporation
                  995 Benecia Avenue
                  Sunnyvale, California 94086
                  Telecopy: 408-737-0505
                  Attention: G. Michael Latta, Chief Financial Officer

        If to the Holder: to its address specified on the signature page hereof


Each such notice, demand or delivery shall be effective (i) if given by
telecopy, when such telecopy is transmitted to the telecopy number specified
herein and the intended recipient confirms the receipt of such telecopy or (ii)
if given by any other means, when received at the address specified herein.



                                       11

<PAGE>   12


        11. Rights of the Holder. Prior to the exercise of any Warrant, the
Holder shall not, by virtue hereof, be entitled to any rights of a shareholder
of the Company, including, without limitation, the right to vote, to receive
dividends or other distributions, to exercise any preemptive right or to receive
any notice of meetings of shareholders or any notice of any proceedings of the
Company except as may be specifically provided for herein.

        12. GOVERNING LAW. THIS WARRANT CERTIFICATE AND ALL RIGHTS ARISING
HEREUNDER SHALL BE CONSTRUED AND DETERMINED IN ACCORDANCE WITH THE INTERNAL LAWS
OF THE STATE OF CALIFORNIA, AND THE PERFORMANCE THEREOF SHALL BE GOVERNED AND
ENFORCED IN ACCORDANCE WITH SUCH LAWS.

        13. Amendments; Waivers. Any provision of this Warrant Certificate may
be amended or waived if, and only if, such amendment or waiver is in writing and
signed, in the case of an amendment, by the Holder and the Company, or in the
case of a waiver, by the party against whom the waiver is to be effective. No
failure or delay by either party in exercising any right, power or privilege
hereunder shall operate as a waiver thereof nor shall any single or partial
exercise thereof preclude any other or further exercise thereof or the exercise
of any other right, power or privilege. The rights and remedies herein provided
shall be cumulative and not exclusive of any rights or remedies provided by law.



                                       12

<PAGE>   13


        IN WITNESS WHEREOF, the Company has duly caused this Warrant Certificate
to be signed by its duly authorized officer and to be dated as of May 20, 1999.

                                        CARDIAC PATHWAYS CORPORATION



                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:


Acknowledged and Agreed:

[HOLDER]


By:
   ----------------------------------
Title:

[ADDRESS]
[ADDRESS]



                                       13

<PAGE>   14


                             WARRANT EXERCISE NOTICE

                (To be delivered prior to exercise of the Warrant
             by execution of the Warrant Exercise Subscription Form)


To:      CARDIAC PATHWAYS CORPORATION

        The undersigned hereby notifies you of its intention to exercise the
Warrant to purchase shares of Preferred Stock, par value $0.001 per share, of
Cardiac Pathways Corporation. The undersigned intends to exercise the Warrant to
purchase ___________ shares (the "Shares") at $______ per Share (the Exercise
Price currently in effect pursuant to the Warrant).

        [ ]     The undersigned intends to pay the aggregate Exercise Price for
the Shares in cash, certified or official bank or bank cashier's check (or a
combination of cash and check) as indicated below.

        [ ]     The undersigned elects to have a number of shares of Preferred
Stock having an aggregate Current Market Price Per Preferred Share equal to the
aggregate Current Market Price Per Preferred Share of the Shares issuable upon
exercise less the aggregate Exercise Price for such Shares.

Date:
     ---------------------------


                                        ----------------------------------------
                                        (Signature of Holder)


                                        ----------------------------------------
                                        (Street Address)


                                        ----------------------------------------
                                        (City)           (State)      (Zip Code)


Payment: $_________________________cash

         $_________________________check



<PAGE>   15



                       WARRANT EXERCISE SUBSCRIPTION FORM

                (To be executed only upon exercise of the Warrant
                   after delivery of Warrant Exercise Notice)


To:     Cardiac Pathways Corporation

        The undersigned irrevocably exercises the Warrant for the purchase of
___________ shares (the "Shares") of Preferred Stock, par value $.01 per share,
of Cardiac Pathways Corporation (the "Company") at $_____ per Share (the
Exercise Price currently in effect pursuant to the Warrant) and either (1)
herewith makes payment of $___________ (such payment being made in cash or by
certified or official bank or bank cashier's check payable to the order of the
Company or by any permitted combination of such cash or check), or (2) has
elected for net issuance of the Shares, all on the terms and conditions
specified in the within Warrant Certificate, surrenders this Warrant Certificate
and all right, title and interest therein to the Company and directs that the
Shares deliverable upon the exercise of this Warrant be registered or placed in
the name and at the address specified below and delivered thereto.

Date:
     ---------------------------


                                        ----------------------------------------
                                        (Signature of Holder)


                                        ----------------------------------------
                                        (Street Address)


                                        ----------------------------------------
                                        (City)           (State)      (Zip Code)




<PAGE>   16



Securities and/or check to be issued to:________________________________________


Please insert social security or identifying number:____________________________


Name:___________________________________________________________________________


Street Address:_________________________________________________________________


City, State and Zip Code:_______________________________________________________



Any unexercised portion of the Warrant evidenced by the within Warrant
Certificate to be issued to:

Please insert social security or identifying number:____________________________


Name:___________________________________________________________________________


Street Address:_________________________________________________________________


City, State and Zip Code:_______________________________________________________



                                        2

<PAGE>   17


                             WARRANT ASSIGNMENT FORM



                                                    Dated ___________ ___, _____


        FOR VALUE RECEIVED, _______________________________ hereby sells,

 assigns and transfers unto____________________________________(the "Assignee"),
                          (please type or print in block letters)

- --------------------------------------------------------------------------------
                                (insert address)

its right to purchase up to ________ shares of Preferred Stock represented by
this Warrant and does hereby irrevocably constitute and appoint
_______________________ Attorney-in-Fact, to transfer the same on the books of
the Company, with full power of substitution in the premises.



                                        Signature:
                                                  ------------------------------




<PAGE>   1


                                                                       EXHIBIT 6


                          CARDIAC PATHWAYS CORPORATION

             SERIES B CONVERTIBLE PREFERRED STOCK PURCHASE AGREEMENT

                                  MAY 20, 1999





<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                               PAGE
                                                                                               ----
<S>     <C>                                                                                    <C>
1.      Sale of Stock............................................................................1

2.      Closing Date.............................................................................2

3.      Delivery.................................................................................2

4.      Representations and Warranties of the Company............................................2
        (a)    Corporate Power...................................................................2
        (b)    Authorization.....................................................................3
        (c)    Capital Structure.................................................................3
        (d)    Valid Issuance of Stock...........................................................5
        (e)    No Conflict; Required Filings and Consents........................................5
        (f)    Litigation........................................................................6
        (g)    Charter Documents; Subsidiaries...................................................6
        (h)    Absence of Certain Developments...................................................6
        (i)    Absence of Undisclosed Liabilities................................................6
        (j)    Non-Contravention.................................................................7
        (k)    Filings...........................................................................8
        (l)    Employee Matters and Benefit Plans................................................8
        (m)    Labor Matters....................................................................11
        (n)    Title to Property................................................................11
        (o)    Taxes............................................................................12
        (p)    Compliance with Laws.............................................................12
        (q)    Environmental Matters............................................................13
        (r)    Intellectual Property............................................................14
        (s)    Personnel........................................................................14
        (t)    Year 2000 Compliance.............................................................14
        (u)    No Brokers.......................................................................15
        (v)    Chief Executive Officer..........................................................15
        (w)    Registration Rights..............................................................15
        (x)    Permits..........................................................................15
        (y)    Royalties........................................................................15
        (z)    Real Property Holding Corporation................................................15
        (aa)   Investment Company Act...........................................................16
        (bb)   Qualified Small Business.........................................................16
        (cc)   Small Business Concern...........................................................16
        (dd)   Broker's or Finder's Fee.........................................................16
        (ee)   Vote Required....................................................................16

5.      Representations and Warranties of the Purchasers........................................17
        (a)    Corporate Power..................................................................17
</TABLE>



                                      -i-

<PAGE>   3

                                TABLE OF CONTENTS
                                   (CONTINUED)

<TABLE>
<CAPTION>
                                                                                              PAGE
                                                                                              ----
<S>     <C>                                                                                   <C>
        (b)    Authorization....................................................................17
        (c)    Governmental Approvals...........................................................17
        (d)    Non-Contravention................................................................17
        (e)    Risk Factors.....................................................................18
        (f)    No Brokers.......................................................................18

6.      Compliance with Securities Laws and Restrictions on Transfer of Securities..............18
        (a)    Additional Representations and Warranties and Agreements of Each
               Purchaser........................................................................18
        (b)    Stop Transfer Orders.............................................................21
        (c)    Compliance with Section 6........................................................21

7.      Additional Covenants of the Purchasers Regarding Securities.............................21
        (a)    Forms 13D or 13G.................................................................21
        (b)    Insider Trading Policy; Short Sales..............................................21
        (c)    Material Confidential Information................................................22
        (d)    Reporting Obligations Pursuant to Section 16.....................................23

8.      Additional Covenants of the Company.....................................................23
        (a)    Inspection.......................................................................23
        (b)    Board of Directors...............................................................23
        (c)    Right of First Offer.............................................................24
        (d)    Sonometrics License..............................................................26
        (e)    Chief Executive Officer..........................................................26
        (f)    Reverse Stock Split..............................................................26
        (g)    Reservation of Common Stock......................................................27
        (h)    Proprietary Information and Inventions Agreement.................................27
        (i)    Qualified Small Business.........................................................27
        (j)    Small Business Administration Matters............................................27
        (k)    Regulatory Compliance Cooperation................................................28
        (l)    Proxy Statement..................................................................28
        (m)    Stockholder Approvals; Recommendations...........................................29
        (n)    Notices of Certain Events........................................................30
        (o)    Efforts..........................................................................30
        (p)    No Solicitation..................................................................31

9.      Closing Conditions......................................................................32
        (a)    Conditions to Purchaser's Obligations at the Closing.............................32
        (b)    Conditions to Company's Obligations at the Closing...............................34

10.     General Provisions......................................................................35
        (a)    Notices..........................................................................35
</TABLE>



                                      -ii-

<PAGE>   4

                                TABLE OF CONTENTS
                                   (CONTINUED)

<TABLE>
<CAPTION>
                                                                                              PAGE
                                                                                              ----
<S>     <C>                                                                                   <C>
        (b)    Governing Law....................................................................37
        (c)    Amendments.......................................................................37
        (d)    Assignment.......................................................................37
        (e)    Expenses.........................................................................38
        (f)    Counterparts.....................................................................38
        (g)    Entire Agreement.................................................................38
        (h)    Titles...........................................................................38
        (i)    Termination......................................................................39
        (j)    Effect of Termination............................................................39
</TABLE>

        EXHIBITS

        A.     CERTIFICATE OF DESIGNATION

        B.     DISCLOSURE SCHEDULE

        C.     REGISTRATION RIGHTS AGREEMENT

        D.     VOTING AGREEMENT



                                     -iii-

<PAGE>   5

                          CARDIAC PATHWAYS CORPORATION

             SERIES B CONVERTIBLE PREFERRED STOCK PURCHASE AGREEMENT

        THIS CONVERTIBLE PREFERRED STOCK PURCHASE AGREEMENT (the "AGREEMENT") is
made as of May 20, 1999 between Cardiac Pathways Corporation, a Delaware
corporation having its principal executive office at 995 Benecia Avenue,
Sunnyvale, California 94086 (the "Company"), and the purchasers listed on
Schedule A hereto, each of which is herein referred to as a "PURCHASER" and
collectively, the "PURCHASERS".

                                    RECITALS

        A.      The parties desire that the Purchasers make an equity investment
of between $25,000,000 and $40,000,000 in the Company pursuant to the terms and
conditions of this Agreement.

        B.      The shares of Series B Convertible Preferred Stock issued to the
Purchasers pursuant to this Agreement shall have registration rights and other
rights as evidenced by the Registration Rights Agreement in the form attached
hereto as Exhibit C (the "RIGHTS AGREEMENT").

        C.      In order to induce the Purchasers to enter into this Agreement,
certain directors, certain officers, and certain stockholders of the Company
have entered into a voting agreement in the form attached hereto as Exhibit D
(the "VOTING AGREEMENT") with the Company, pursuant to which they have agreed to
vote to approve the transaction contemplated hereunder.

        D.     In partial consideration of the Purchasers' investment in the
Company, three nominees of the Purchasers shall be elected to the Board of
Directors of the Company pursuant to the terms and conditions set forth in the
Rights Agreement.

        NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and promises set forth in this Agreement, the parties agree as
follows:

        1.      Sale of Stock.

                (a)     The Company hereby agrees to sell to the Purchasers or
their designees, and the Purchasers or their designees hereby agree to purchase
from the Company in the amounts listed on Schedule A hereto, which are inclusive
of any Shares (as defined below) issued upon cancellation of notes issued by the
Company to the Purchasers, for aggregate consideration of between $25.0 and
$40.0 million, up to 40,000 shares of the Company's Series B Convertible
Preferred Stock (the "SHARES") at the per share purchase price (the "PER SHARE
PURCHASE PRICE") equal to 1,000 times the lower of (i) $1.00 or (ii) average
trading price of the Company's common stock (the "COMMON STOCK") on the five (5)
trading days immediately prior to the date of the public announcement of this
private placement, as reported on the Nasdaq National Market. Additional
Purchasers may be added to Schedule A after the date of this Agreement at the
sole discretion of the majority in interest of the Purchasers as set forth on
Schedule A.



<PAGE>   6

                (b)     The Shares shall have the respective rights, preferences
and privileges set forth in a certificate of designation attached hereto as
Exhibit A (the "CERTIFICATE OF DESIGNATION"), which shall be approved by the
Purchasers and filed on or prior to the Closing Date (as defined below) by the
Company with the Secretary of State of Delaware.

        2.      Closing Date. The closing of the purchase and sale of the Shares
hereunder (the "CLOSING") will take place, upon the satisfaction of the
conditions to closing set forth in Section 9 hereof, at the offices of Wilson
Sonsini Goodrich & Rosati, Professional Corporation, 650 Page Mill Road, Palo
Alto, California, as soon as practicable but in any event, subject to applicable
law, no later than the earlier to occur of five (5) business days after the last
of the conditions set forth in Section 9 hereof have been satisfied or October
31, 1999. The date of the Closing is hereinafter referred to as the "Closing
Date."

        3.      Delivery. At the Closing, the Company will deliver a certificate
registered in each Purchaser's name representing the Shares to be purchased by
such Purchaser. Such delivery shall be against payment of the purchase price
therefor or by cancellation of notes delivered by the Purchasers to the Company,
or a combination of each of the foregoing, in an amount equal to the product of
the number of Shares and the Per Share Purchase Price (the "PURCHASE PRICE") by
wire transfer to the Company's bank account at:

               Bank Name:           Citibank
               Bank Address:        111 Wall Street
                                    New York, NY 10005
               Contact:             David L. Hayes (415-576-2148)
               ABA#:                021000089
               Account Name:        Morgan Stanley
               Account Number:      # 3889-0774
                                    FBO CPC # 14-78247

        4.      Representations and Warranties of the Company. The Company
hereby represents and warrants to the Purchasers as follows, except as set forth
on a Disclosure Schedule (the "DISCLOSURE SCHEDULE") attached hereto as Exhibit
B and furnished to each Purchaser, which exceptions shall be deemed to be
representations and warranties as if made hereunder

                (a)     Corporate Power. The Company is a corporation duly
organized, validly existing and in good standing under the laws of the State of
Delaware and is qualified to do business as a foreign corporation in each
jurisdiction where failure to qualify would not, individually or in the
aggregate, (i) adversely affect the legality, validity or enforceability of this
Agreement, the Voting Agreement or the Rights Agreement in any material respect,
(ii) have or result in a Material Adverse Effect on the results of operations,
assets, prospects or financial condition of the Company, taken as a whole or
(iii) adversely impair the Company's ability to perform fully on a timely basis
its obligations under this Agreement, the Voting Agreement or the Rights
Agreement (any of (i), (ii) or (iii), being a "MATERIAL ADVERSE EFFECT"). The
Company has full corporate power and authority to own its property, to carry on
its business as presently conducted and to carry out the transactions
contemplated hereby.




                                      -2-
<PAGE>   7

                (b)     Authorization. The Company has full corporate power to
execute, deliver and perform this Agreement, the Voting Agreement and the Rights
Agreement, and each such agreement has been duly executed and delivered by the
Company and is the legal, valid and, assuming due execution by the Purchaser,
binding obligation of the Company, enforceable in accordance with its terms,
subject to applicable bankruptcy, insolvency, moratorium, reorganization or
similar laws affecting creditors' rights generally, and to general equitable
principles. The execution, delivery and performance by the Company of this
Agreement, the Voting Agreement and the Rights Agreement, including the issuance
(or reservation for issuance), sale and delivery of the Shares contemplated by
Section 1 hereof and the Common Stock issuable upon conversion thereof, have
been duly authorized by all necessary corporate action on the part of the
Company, its officers, directors and stockholders; provided, however, that the
Company makes no representation or warranty as to the enforceability of the
indemnification and contribution provisions of Section 5 of the Rights Agreement
to the extent that the provisions thereof may be subject to limitations of
public policy and the effect of applicable statutes and judicial decisions. The
Board of Directors of the Company (at a meeting duly called and held) has (a)
determined that the sale of the Shares is advisable and fair and in the best
interests of the Company and its stockholders, and (b) recommended the approval
and adoption of this Agreement and approval of the sale of the Shares by the
stockholders and directed that this Agreement and the sale of the Shares by
submitted for consideration by the Company's stockholders. The Board of
Directors of the Company has taken all action necessary to render inapplicable,
as it relates to Purchasers, the provisions of Section 203 of the Delaware
General Corporation Law (the "DGCL"). No other corporate action on the part of
the Company is necessary to authorize the execution, delivery and performance of
this Agreement and the consummation of the transactions contemplated hereby
(other than, in the case of this Agreement, the approval of the sale of the
Shares by the holders of at least a majority of the Common Stock voting at the
meeting held to consider sale of the Shares).

                (c)     Capital Structure.

                        (i)     The authorized capital stock of the Company
consists of 30,000,000 shares of Common Stock, $.001 par value per share, and
5,000,000 shares of Preferred Stock, $.001 par value per share, of which 30,000
shares have been designated Series A Participating Preferred Stock, 50,000
shares have been designated Series B Convertible Preferred Stock and 4,920,000
are undesignated. As of the date hereof, (i) 10,038,578 shares of Common Stock,
all of which are validly issued, fully paid and nonassessable, no shares of
Series A Participating Preferred Stock and no shares of Series B Convertible
Preferred Stock were issued and outstanding; (ii) no shares were held in
treasury by the Company or by any subsidiaries of the Company; (iii) 2,866,629
shares of Common Stock were reserved for issuance under the Company's stock
plans (including (A) 1,442,440 shares of Common Stock reserved for issuance
under the 1991 Stock Option Plan, 1,067,591 shares of which were subject to
outstanding options and 374,849 of which were reserved for future grants, (B)
60,000 shares of Common Stock were reserved for issuance under the 1996 Director
Option Plan, 33,000 shares of which were subject to outstanding options and
27,000 of which were reserved for future grants, (C) 400,000 shares of Common
Stock were reserved for issuance under the 1998 Non-Statutory Stock Option Plan,
143,818 of which were subject to outstanding options and 256,182 shares of which
were available for future grants, (D) 920,506




                                      -3-
<PAGE>   8

shares of Common Stock were reserved for issuance under the 1998 Employee Stock
Purchase Plan, 40,506 shares of which were available for future purchase in
fiscal 1999 and 880,000 of which may be purchased in maximum amounts of 200,000
shares per fiscal year commencing July 1, 1999 and (E) 43,683 shares were
subject to an outstanding nonstatutory option granted outside of the plans);
collectively the Company's "STOCK PLANS;" and (iv) 143,141 shares of Common
Stock and related Preferred Stock Purchase Rights were subject to outstanding
warrants to purchase such shares. All shares of the Company's Common Stock
subject to issuance as specified above, on the terms and conditions specified in
the instruments pursuant to which they are issuable, shall be duly authorized,
validly issued, fully paid and nonassessable. There are no obligations,
contingent or otherwise, of the Company or any of its subsidiaries to
repurchase, redeem or otherwise acquire any shares of the Company's capital
stock or the capital stock of any of the Company's subsidiaries or make any
investment (in the form of a loan, capital contribution or otherwise) in any
such subsidiary or any other entity other than as contemplated by this
Agreement. All of the outstanding shares of capital stock of each subsidiary of
the Company are duly authorized, validly issued, fully paid and nonassessable,
and all such shares (other than directors' qualifying shares) are owned by the
Company or another subsidiary of the Company free and clear of all security
interests, liens, claims, pledges, agreements, limitations on the Company's
voting rights, charges or other encumbrances of any nature. The Common Stock is
quoted on the Nasdaq National Market.

                        (ii)    Except as set forth in Section 4(c)(i), there
are no equity securities of any class of capital stock of the Company, or any
security exchangeable into or exercisable for such equity securities, issued,
reserved for issuance or outstanding. Except as set forth in Section 4(c)(i),
there are no options, warrants, equity securities, calls, rights, commitments or
agreements of any character to which the Company or any of its subsidiaries is a
party or by which it is bound obligating the Company or any of its subsidiaries
to issue, deliver or sell, or cause to be issued, delivered or sold, additional
shares of capital stock of the Company or any of its subsidiaries to grant or
enter into any such warrant, equity security, call, right, commitment or
agreement, and except for the transactions contemplated by this Agreement, the
Voting Agreement and the Rights Agreement, there are no voting trusts, proxies
or other agreements or understandings with respect to the shares of capital
stock of the Company to which the Company is a party.

                (d)     Valid Issuance of Stock. The Shares will be duly
authorized, validly issued, fully paid and non-assessable and, based in part
upon the representations of the Purchaser in this Agreement, will be issued in
compliance with all applicable federal and state securities laws. The Common
Stock issuable upon conversion of the Shares (the "CONVERSION SHARES") has been
duly and validly reserved for issuance and, upon issuance in accordance with the
terms of the Certificate of Designation, will be duly and validly issued and
fully paid and nonassessable. The Shares and the Conversion Shares will be free
of restrictions on transfer other than the restrictions in this Agreement and
the Rights Agreement and under applicable state and/or federal securities laws,
and will not be subject to any preemptive or other similar rights or any liens
or encumbrances (other than any liens or encumbrances created by the
Purchasers).

                (e)     No Conflict; Required Filings and Consents.



                                      -4-
<PAGE>   9

                        (i)     The execution and delivery of this Agreement,
the Voting Agreement and the Rights Agreement by the Company do not, and the
performance of this Agreement, the Voting Agreement and the Rights Agreement by
the Company shall not, (i) conflict with or violate the Amended and Restated
Certificate of Incorporation (the "CERTIFICATE OF INCORPORATION"), the
Certificate of Designation, the Company's Bylaws, as amended (the "BYLAWS") or
equivalent organizational documents of the Company or any of its subsidiaries,
(ii) conflict with or violate any law, rule, regulation, order, judgment or
decree applicable to the Company or any of its subsidiaries or by which it or
their respective properties are bound or affected, or (iii) result in any breach
of or constitute a default (or an event that with notice or lapse of time or
both would become a default) under, or impair the Company's or any such
subsidiary's rights or alter the rights or obligations of any third party under,
or give to others any rights of termination, amendment, acceleration or
cancellation of, or result in the creation of a lien or encumbrance on any of
the properties or assets of the Company or any of its subsidiaries pursuant to,
any material note, bond, mortgage, indenture, contract, agreement, lease,
license, permit, franchise or other instrument or obligation to which the
Company or any of its subsidiaries is a party or by which the Company or any of
its subsidiaries or its or any of their respective properties are bound or
affected, except for any such breaches, defaults or other occurrences that do
not have or result in, individually or in the aggregate, a Material Adverse
Effect.

                        (ii)    The execution and delivery of this Agreement,
the Voting Agreement and the Rights Agreement by the Company do not, and the
performance of this Agreement, the Voting Agreement and the Rights Agreement by
the Company shall not, require any consent, approval, authorization or permit
of, or filing with or notification to, any governmental entity except for
applicable requirements, if any, of the Securities Act, the Exchange Act, state
securities laws, the rules and regulations of the Nasdaq National Market and the
consent of a majority of the holders of the Common Stock of the Company subject
to that certain Shareholder Rights Agreement dated as of June 13, 1995.

                (f)     Litigation. There is no litigation or governmental
proceeding or investigation pending or, to the knowledge of the Company,
threatened against the Company that either (i) adversely affects or challenges
the legality, validity or enforceability of this Agreement, the Voting Agreement
or the Rights Agreement or (ii) could reasonably be expected to, individually or
in the aggregate, have a Material Adverse Effect.

                (g)     Charter Documents; Subsidiaries. Except for Cardiac
Pathways B.V., a corporation organized under the laws of the Netherlands, and
Cardiac Pathways G.m.b.H., a corporation organized under the laws of Germany,
the Company has no active subsidiaries and does not otherwise directly or
indirectly control any other business entity. The Company has furnished counsel
to the Purchasers with true, correct and complete copies of its Amended and
Restated Certificate of Incorporation and Bylaws, together with any amendments
thereto as of the date hereof and the charter documents of each of its
subsidiaries. Each of the Company's subsidiaries is duly organized and existing
under the laws of its jurisdiction of organization and is in good standing under
such laws. None of the Company's subsidiaries owns or leases property or engages
in any



                                      -5-
<PAGE>   10

activity in any jurisdiction that might require its qualification to do business
as a foreign corporation and in which the failure so to qualify would have a
Material Adverse Effect.

                (h)     Absence of Certain Developments. Since the date of its
most recent report filed with the Commission pursuant to the Securities and
Exchange Act of 1934, as amended from time to time (such act, together with the
rules and regulations promulgated thereunder, the "EXCHANGE ACT," and such
report, the "CURRENT SEC FILING"), except as disclosed therein, there has been
no (i) change in the condition, financial or otherwise, of the Company or its
assets, liabilities, properties, business, operations, intellectual property
rights owned or controlled by it, or prospects generally that would,
individually or in the aggregate, have a Material Adverse Effect; (ii)
declaration, setting aside or payment of any dividend or other distribution with
respect to the capital stock of the Company, or (iii) loss, destruction or
damage to any property of the Company, whether or not insured, which has or may
have a Material Adverse Effect.

                        (i)     Absence of Undisclosed Liabilities. Except as
and to the extent reflected or stated in the Current SEC Filing, there has been
no:

                        (i)     Material accrued or contingent liability of a
type required to be reflected on a balance sheet in accordance with generally
accepted accounting principles or described in the footnotes thereto.

                        (ii)    Resignation or termination of any key officers
in the Company; and the Company, to the best of its knowledge, does not know of
the impending resignation or termination of employment of any such officer;

                        (iii)   Material change, except in the ordinary course
of business, in the contingent obligations of the Company by way of guaranty,
endorsement, indemnity, warranty or otherwise;

                        (iv)    Damage, destruction or loss, whether or not
covered by insurance, materially and adversely affecting the properties,
business or prospects or financial condition of the Company;

                        (v)Waiver by the Company of a valuable right or of a
material debt owed to it;

                        (vi)    Direct or indirect loans made by the Company to
any stockholder, employee, officer or director of the Company, other than
advances made in the ordinary course of business;

                        (vii)   Material change in any compensation arrangement
or agreement with any employee, officer, director or stockholder;

                        (viii)  Declaration or payment of any dividend or other
distribution of the assets of the Company;




                                      -6-
<PAGE>   11

                        (ix)    Labor organization activity;

                        (x)     Debt, obligation or liability incurred, assumed
or guaranteed by the Company, except those for immaterial amounts and for
current liabilities incurred in the ordinary course of business;

                        (xi)    Sale, assignment or transfer of any patents,
trademarks, copyrights, trade secrets or other intangible assets;

                        (xii)   Change in any material agreement to which the
Company is a party or by which it is bound which has had a Material Adverse
Effect; or

                        (xiii)  Any other event or condition of any character
that, either individually or cumulatively, has had a Material Adverse Effect.

                (j)     Non-Contravention. The execution, delivery and
performance by the Company of this Agreement, the Voting Agreement and the
Rights Agreement do not and will not (i) contravene or conflict with the Amended
and Restated Certificate of Incorporation, the Certificate of Designation or
Bylaws of the Company, or (ii) contravene or conflict with or constitute a
violation of any provision of any law, regulation, judgment, injunction, order
or decree binding upon or applicable to the Company or its property, or result
in a breach of or constitute a default under any material agreement of the
Company (whether upon notice or passage of time) binding upon or applicable to
it or its property, in any manner which would materially and adversely affect
the Purchasers' rights or their ability to realize the intended benefits under
this Agreement, the Voting Agreement or the Rights Agreement.

                (k)     Filings.

                        (i)     The Company has filed in a timely manner, and
has delivered to the Purchasers copies of, the following reports required to be
filed with the Commission under the Exchange Act: (1) the Company's quarterly
report on Form 10-Q for the quarter ended December 31, 1998 filed with the
Commission on February 16, 1999 and (2) the Company's Annual Report on Form 10-K
for the fiscal year ended June 30, 1998 filed with Commission on September 25,
1998 (collectively the "SEC REPORTS"). As of its filing date, (i) each such
report complied in all material respects with the applicable requirements of the
Securities Act and the Exchange Act, as the case may be, (ii) no such report or
statement filed pursuant to the Exchange Act contained any untrue statement of a
material fact or omitted to state any material fact necessary in order to make
the statements made therein, in the light of the circumstances under which they
were made, not misleading. None of the Company's subsidiaries is required to
file any forms, reports or other documents with the Commission.

                        (ii)    Each of the consolidated financial statements
(including in each case any related notes) contained in the SEC Reports complied
as to form in all material respects with the applicable published rules and
regulations of the Commission with respect thereto, was prepared in accordance
with U.S. generally accepted accounting principles applied on a consistent basis



                                      -7-
<PAGE>   12

throughout the periods involved (except as may be indicated in the notes to such
financial statements or, in the case of unaudited statements, as permitted by
Form 10-Q and the rules and regulations promulgated by the Commission), and
fairly presented the consolidated financial position of the Company and its
subsidiaries as of the respective dates and the consolidated results of
operations and statements of cash flows for the periods indicated, except that
the unaudited interim financial statements were subject to normal and recurring
year-end adjustments which were not or are not expected to be material in
amount.

                (l)     Employee Matters and Benefit Plans.

                        (i)     Definitions. The following terms shall have the
meanings set forth below:

                                (1)     "Affiliate," as used in this section
shall mean any other person or entity under common control with the Company
within the meaning of Section 414(b), (c), (m) or (o) of the Internal Revenue
Code of 1986, as amended (the "CODE"), and regulations thereunder;

                                (2)     "Company Employee Plan" shall refer to
any plan, program, policy, practice, contract, agreement or other arrangement
providing for compensation, severance, termination pay, performance awards,
stock or stock-related awards, fringe benefits or other employee benefits or
remuneration of any kind, whether formal or informal, funded or unfunded,
including without limitation, each "employee benefit plan," within the meaning
of Section 3(3) of the Employee Retirement Income Security Act of 1978, as
amended ("ERISA"), which is or has been maintained, contributed to, or required
to be contributed to, by the Company or any Affiliate for the benefit of any
"Company Employee" (as defined below), and pursuant to which the Company or any
Affiliate has or may have any material liability contingent or otherwise;

                                (3)     "Company Employee" shall mean any
current, former, or retired employee, officer, or director of the Company or any
Affiliate;

                                (4)     "Company Employee Agreement" shall refer
to each management, employment, severance, consulting, relocation, repatriation,
expatriation, visa, work permit or similar agreement or contact between the
Company or any Affiliates and any Company Employee or consultant; and

                                (5)     "Company Pension Plan" shall refer to
each Company Employee Plan which is an "employee pension benefit plan," within
the meaning of Section 3(2) of ERISA.

                        (ii)    Schedule. The Company does not have any plan or
commitment to establish any new Company Employee Plan or Company Employee
Agreement, to modify any Company Employee Plan or Company Employee Agreement
(except to the extent required by law or to conform any such Company Employee
Plan or Company Employee Agreement to the requirements of any applicable law, in
each case as previously disclosed to the Purchasers in writing,




                                      -8-
<PAGE>   13

or as required by this Agreement), or to enter into any Company Employee Plan or
Company Employee Agreement, nor does it have any intention or commitment to do
any of the foregoing.

                        (iii)   Documents. The Company has provided to the
Purchasers (i) correct and complete copies of all documents embodying or
relating to each Company Employee Plan and each Company Employee Agreement
including all amendments thereto and written interpretations thereof, (ii) the
most recent annual actuarial valuations, if any, prepared for each Company
Employee Plan; (iii) the three most recent annual reports (Series 5500 and all
schedules thereto), if any, required under ERISA or the Code in connection with
each Company Employee Plan or related trust; (iv) if any Company Employee Plan
is funded, the most recent annual and periodic accounting of Company Employee
Plan assets; (v) the most recent summary plan description together with the most
recent summary of material modifications, if any, required under ERISA with
respect to each Company Employee Plan; (vi) all IRS determination letters and
rulings relating to Company Employee Plans and copies of all applications and
correspondence to or from the Internal Revenue Service (the "IRS") or the
Department of Labor (the "DOL") with respect to any Company Employee Plan; (vii)
all communications material to any Company Employee or Company Employees
relating to any Company Employee Plan and any proposed Company Employee Plans,
in each case, relating to any amendments, terminations, establishments,
increases or decreases in benefits, acceleration of payments or vesting
schedules or other events which would result in any material liability to the
Company; and (viii) all registration statements and prospectuses prepared in
connection with each Company Employee Plan.

                        (iv)    Company Employee Plan Compliance. (i) The
Company has performed in all material respects all obligations required to be
performed by it under each Company Employee Plan and each Company Employee Plan
has been established and maintained in all material respects in accordance with
its terms and in compliance with all applicable laws, statutes, orders, rules
and regulations, including but not limited to ERISA or the Code; (ii) to the
Company's knowledge no "prohibited transaction," within the meaning of Section
4975 of the Code or Section 406 of ERISA, has occurred with respect to any
Company Employee Plan; (iii) there are no actions, suits or claims pending, or,
to the knowledge of the Company, threatened or anticipated (other than routine
claims for benefits) against any Company Employee Plan or against the assets of
any Company Employee Plan; (iv) each Company Employee Plan can be amended,
terminated or otherwise discontinued after the closing in accordance with its
terms, without liability to the Company or any Affiliates (other than ordinary
administration expenses typically incurred in a termination event); (v) there
are no inquiries or proceedings pending or, to the knowledge of the Company or
any Affiliates, threatened by the IRS or DOL with respect to any Company
Employee Plan; and (vi) to the Company's knowledge neither the Company nor any
Affiliate is subject to any penalty or tax with respect to any Company Employee
Plan under Section 402(i) of ERISA or Section 4975 through 4980 of the Code.

                        (v)     Company Pension Plans. The Company does not now,
nor has it ever, maintained, established, sponsored, participated in, or
contributed to, any Company Pension Plan which is subject to Part 3 of Subtitle
B of Title I of ERISA, Title IV of ERISA or Section 412 of the Code.




                                      -9-
<PAGE>   14

                        (vi)    Multiemployer Plans. At no time has the Company
contributed to or been requested to contribute to any Multiemployer Plan.

                        (vii)   No Post-Employment Obligations. No Company
Employee Plan provides, or has any liability to provide, life insurance, medical
or other employee benefits to any Company Employee upon his or her retirement or
termination of employment for any reason, except as may be required by statute,
and the Company has never represented, promised or contracted (whether in oral
or written form) to any Company Employee (either individually or to Company
Employees as a group) that such Company Employee(s) would be provided with life
insurance, medical or other employee welfare benefits upon their retirement or
termination of employment, except to the extent required by statute.

                        (viii)  Effect of Transaction.

                                (1)     The execution of this Agreement and the
consummation of the transactions contemplated hereby will not (either alone or
upon the occurrence of any additional or subsequent events) constitute an event
under any Company Employee Plan, Company Employee Agreement, trust or loan that
will or may result in any payment (whether of severance pay or otherwise),
acceleration, forgiveness of indebtedness, vesting, distribution, increase in
benefits or obligation to fund benefits with respect to any Company Employee.

                        (ix)    Employment Matters. The Company and each of its
subsidiaries (i) is in compliance in all material respects with all applicable
foreign, federal, state and local laws, rules and regulations respecting
employment, employment practices, terms and conditions of employment and wages
and hours, in each case, in each location in which the Company or any of its
subsidiaries employs persons; (ii) has withheld all amounts required by law or
by agreement to be withheld from the wages, salaries and other payments to
Company Employees; (iii) is not liable for any material arrears of wages or any
material taxes or any material penalty for failure to comply with any of the
foregoing; and (iv) is not liable for any material payment to any trust or other
fund or to any governmental or administrative authority, with respect to
unemployment compensation benefits, social security or other benefits or
obligations for Company Employees (other than routine payments to be made in the
normal course of business and consistent with past practice).

                        (x)     Violations. To the Company's knowledge, no
employee of the Company has violated any employment contract, patent disclosure
agreement or non competition agreement between such employee and any former
employer of such employee due to such employee being employed by the Company and
disclosing to the Company trade secrets or proprietary information of such
employer. The Company is not, and has never been, a party to any collective
bargaining agreement. The Company and its subsidiaries are in compliance in all
material respects with all applicable laws regarding employment practices, terms
and conditions of employment, and wages and hours (including, without
limitation, ERISA, the Worker Adjustment and Retaining Notification Act or any
similar state or local law).

                (m)     Labor Matters. (i) There are no controversies pending
or, to the best knowledge of each of the Company and its respective
subsidiaries, threatened, between the




                                      -10-
<PAGE>   15

Company or any of its subsidiaries and any of their respective employees, which
controversies have or could reasonably be expected to have a Material Adverse
Effect; (ii) as of the date of this Agreement, neither the Company nor any of
its subsidiaries is a party to any collective bargaining agreement or other
labor union contract applicable to persons employed by the Company or its
subsidiaries nor does the Company or its subsidiaries know of any activities or
proceedings of any labor union to organize any such employees (A) as of the date
of this Agreement and (B) which, as of the Closing, have or could reasonably be
expected to have a Material Adverse Effect; and (iii) as of the date of this
Agreement, neither the Company nor any of its subsidiaries has any knowledge of
any strikes, slowdowns, work stoppages or lockouts, or threats thereof, by or
with respect to any employees of the Company or any of its subsidiaries (A) as
of the date of this Agreement and (B) which, as of the closing, have or could
reasonably be expected to have a Material Adverse Effect.

                (n)     Title to Property. The Company owns no material real
property. The Company and each of its subsidiaries have good and defensible
title to all of their material properties and assets, free and clear of all
liens, charges and encumbrances except liens for taxes not yet due and payable
and such liens or other imperfections of title, if any, as do not materially
detract from the value of or interfere with the present use of the property
affected thereby or which, individually or in the aggregate, could not
reasonably be expected to have a Material Adverse Effect; and all leases
pursuant to which the Company or any of its subsidiaries lease from others
material amounts of real or personal property are in good standing, valid and
effective in accordance with their respective terms, and there is not, under any
of such leases, any existing material default or event of default (or any event
which with notice or lapse of time, or both, would constitute a material default
and in respect of which the Company or its subsidiary has not taken adequate
steps to prevent such default from occurring) except where the lack of such good
standing, validity and effectiveness or the existence of such default or event
of default could not, individually or in the aggregate, reasonably be expected
to have a Material Adverse Effect. All the plants, structures and equipment of
the Company and its subsidiaries, except such as may be under construction, are
in good operating condition and repair, except where the failure of such plants,
structures and equipment to be in such good operating condition and repair could
not, individually or in the aggregate, reasonably be expected to have a Material
Adverse Effect.

                (o)     Taxes. The Company and each of its subsidiaries, and any
consolidated, combined, unitary or aggregate group for tax purposes of which the
Company or any of its subsidiaries is or has been a member, have timely filed
all tax returns required to be filed by them and have paid all taxes shown
thereon to be due. These returns and reports are true and complete in all
material respects. The Company has paid all taxes and other assessments due. The
Company has provided adequate accruals in accordance with generally accepted
accounting principles in its financial statements for any taxes that have not
been paid, whether or not shown as being due on any tax returns. There is (i) no
material claim for taxes that is a lien against the property of the Company or
any of its subsidiaries or is being asserted against the Company or any of its
subsidiaries other than liens for taxes not yet due and payable, (ii) no audit
of any tax return of the Company or any of its subsidiaries being conducted by a
tax authority, (iii) no extension of the statute of limitations on the
assessment of any taxes granted by the Company or any of its subsidiaries and
currently in effect,



                                      -11-
<PAGE>   16

and (iv) no agreement, contract or arrangement to which the Company or any of
its subsidiaries is a party that may result in the payment of any amount that
would not be deductible by reason of Sections 162(m), 280G or 404 of the Code.
Neither the Company nor any of its subsidiaries has ever been a member of any
combined, controlled, consolidated or affiliated group (other than the group of
which the Company is the parent) for tax purposes. Neither the Company nor any
of its subsidiaries is a party to any tax sharing or tax allocation agreement
nor does the Company or any of its subsidiaries owe any amount under any such
agreement. Neither the Company nor any of its subsidiaries has been at any time,
a "United States real property holding corporation" with the meaning of Section
897(c)(2) of the Code.

                (p)     Compliance with Laws. Except with respect to
environmental matters (which are covered by Section 4(q) below), the Company and
its Subsidiaries are, and at all times since January 1, 1996 have been, in
compliance with all applicable laws, regulations, orders, judgments and decrees,
except where the failure to so comply would not have a Material Adverse Effect
on the condition of the Company and its Subsidiaries taken as a whole. Neither
the Company nor any of its subsidiaries has received any notice or other
communication from any governmental entity or other person regarding any actual
or possible material violation of, or material failure to comply with, any law,
regulation, order, judgment or decree.

                (q)     Environmental Matters.

                        (i)     Hazardous Material. Except as would result in
any material liability to the Company under Environmental Laws (as defined
below), no underground storage tanks and no amount of any substance that has
been designated by any Governmental Entity or by applicable Environmental Laws
to be radioactive, toxic, hazardous or otherwise a danger to health or the
environment, including, without limitation, PCBs, asbestos, petroleum,
urea-formaldehyde and all substances listed as hazardous substances pursuant to
the Comprehensive Environmental Response, Compensation, and Liability Act of
1980, as amended, or defined as a hazardous waste pursuant to the Resource
Conservation and Recovery Act of 1976, as amended, and the regulations
promulgated pursuant to Environmental Laws, but excluding office and janitorial
supplies maintained in accordance with Environmental Laws (a "HAZARDOUS
MATERIAl") are present, as a result of the actions of the Company or any of its
subsidiaries or any affiliate of the Company, or, to the Company's knowledge, as
a result of any action of any third party or otherwise, in, on or under any
property, including the land and the improvements, ground water and surface
water thereof, that the Company or any of its subsidiaries has at any time
owned, operated, occupied or leased. For the purposes of this Agreement,
"ENVIRONMENTAL LAWS" shall mean all federal, state, local and foreign laws,
ordinances, treaties, rules, regulations, guidelines and permit conditions
relating to contamination, pollution or the environment (including ambient air,
surface water, ground water, land surface or subsurface strata) or the
protection of human health and worker safety, including, without limitation,
laws and regulations relating to Hazardous Materials Activities (as hereinafter
defined) or emissions, discharges, releases or threatened releases of Hazardous
Materials.

                        (ii)    Hazardous Materials Activities. Neither the
Company nor any of its subsidiaries has (i) transported, stored, used,
manufactured, disposed of, released or exposed its



                                      -12-
<PAGE>   17

employees or others to Hazardous Materials in violation of Environmental Laws,
or (ii) disposed of, transported, sold, used, released, exposed its employees or
others to or manufactured any product contained a Hazardous Material
(collectively "HAZARDOUS MATERIALS ACTIVITIES") in violation of any
Environmental Laws in effect prior to or as of the date hereof except for which
violation has not heretofore been cured or for which there is any remaining
liability.

                        (iii)   Permits. The Company and its subsidiaries hold
all environmental approvals, permits, licenses, clearances and consents (the
"ENVIRONMENTAL PERMITS") necessary for the conduct of the Company's and its
subsidiaries' Hazardous Material Activities and other businesses of the Company
and its subsidiaries as such activities and businesses are currently being
conducted. The Company and its subsidiaries are and at all times have been in
compliance in all material respects with the terms of the Environmental Permits
except for which noncompliance has heretofore been cured or for which there is
any remaining liability.

                        (iv)    Environmental Liabilities. No action,
proceeding, revocation proceeding, amendment procedure, writ, claim or
injunction is pending, and to the Company's knowledge, no action, proceeding,
revocation proceeding, amendment procedure, writ, claim or injunction has been
threatened by any governmental entity against the Company or any of its
subsidiaries concerning any Environmental Permit, Hazardous Material or any
Hazardous Materials Activities of the Company or any of its subsidiaries.

                (r)     Intellectual Property. The Company or its subsidiaries
owns each of the patents and patent applications referred to in the SEC Reports
and, except as disclosed in the SEC Reports, (i) the Company owns or possesses
adequate and enforceable rights to use all other patent applications, patents,
trademarks, trademark applications, trade names, service marks, copyrights,
copyright applications, licenses, know-how and other similar rights and
proprietary knowledge (collectively with the patents and patent applications
described in the SEC Reports, the "INTANGIBLES") necessary for the conduct of
the Company's current, former and anticipated activities and (ii) neither the
Company nor any subsidiary, to its knowledge, has infringed, is infringing, or
has received any notice of infringement of any Intangible of any other person
that, if the subject of an unfavorable decision, ruling or finding, could
reasonably be expected to have a Material Adverse Effect and the Company knows
of no basis therefor. The expiration of any Intangibles would not have a
Material Adverse Effect on the Company and its subsidiaries taken as a whole.
Except as set forth in the SEC Reports, the Company has received no notice of
potential indemnity claims from customers based upon a notice of infringement
any such customer has received from a patent owner relating to an assertion of
infringement of a patent other than potential indemnity claims which
individually or in the aggregate would not reasonably be expected to have a
Material Adverse Effect on the Company.

                (s)     Personnel. All personnel, including employees, agents,
consultants and contractors, who have contributed to or participated in the
conception and development of the Intangibles on behalf of the Company have
executed nondisclosure agreements in the form set forth on the Disclosure
Schedule and either (i) have been a party to a "work-for-hire" arrangement or
agreements with the Company in accordance with applicable national and state law
that has accorded



                                      -13-
<PAGE>   18

the Company full, effective, exclusive and original ownership of all tangible
and intangible property thereby arising, or (ii) have executed appropriate
instruments of assignment in favor of the Company as assignee that have conveyed
to the Company effective and exclusive ownership of all tangible and intangible
property thereby arising.

                (t)     Year 2000 Compliance. Except as would not reasonably be
expected to have a Material Adverse Effect on the Company, all of the Company's
Information Technology (as defined below) effectively addresses the Year 2000
issue, and will not cause an interruption in the ongoing operations of the
Company's business on or after January 1, 2000. For purposes of the foregoing,
the term "INFORMATION TECHNOLOGY" shall mean and include all software, hardware,
firmware, telecommunications systems, network systems, embedded systems and
other systems, components and/or services that are owned or used by the Company
in the conduct of its business, or purchased by the Company from third party
suppliers.

                (u)     No Brokers. The Company has not directly or indirectly
employed any broker, finder or other person (including any employee) that might
be entitled to a fee, commission or other compensation upon the execution of
this Agreement, the Voting Agreement or the Rights Agreement or the consummation
of the transactions contemplated by this Agreement, the Voting Agreement or the
Rights Agreement for which the Purchasers or the Company is or may be liable.

                (v)     Chief Executive Officer. The Company has entered into an
employment agreement with a new Chief Executive Officer acceptable to the
Purchasers.

                (w)     Registration Rights. Except as provided in the Rights
Agreement, the Company is presently not under any obligation and has not granted
any rights to register under the Securities Act any of its presently outstanding
securities or any of its securities that may subsequently be issued.

                (x)     Permits. The Company has all franchises, permits,
licenses, and any similar authority necessary for the conduct of its business as
now being conducted by it, the lack of which could have a Material Adverse
Effect on the business, properties, prospects, or financial condition of the
Company, and believes it can obtain, without undue burden or expense, any
similar authority for the conduct of its business as presently planned to be
conducted. The Company is not in default in any material respect under any such
franchises, permits, licenses or other similar authority.

                (y)     Royalties. Except as set forth in the Disclosure
Schedule, there are no royalties, fees, honoraria or other payments payable by
the Company to any person or entity by reason of the ownership, development,
use, license, sale or disposition of the Intangibles, other than salaries and
sales commissions paid to employees and sales agents in the ordinary course of
business.

                (z)     Real Property Holding Corporation. The Company is not a
real property holding corporation within the meaning of Section 897(c)(2) of the
Internal Revenue Code of 1986, as amended (the "Code") and any regulations
promulgated thereunder.




                                      -14-
<PAGE>   19

                (aa)    Investment Company Act. The Company is not an
"investment company", or a company "controlled" by an "investment company,"
within the meaning of the Investment Company Act of 1940, as amended.

                (bb)    Qualified Small Business. The Company is a "qualified
small business" within the meaning of Section 1202(d) of the Code as of the date
hereof and the Series B Preferred should qualify as "qualified small business
stock" as defined in Section 1202(c) of the Code as of the date hereof. The
Company further represents and warrants that, as of the date hereof, it meets
the "active business requirement" of Section 1202(e) of the Code and it has made
no "significant redemptions" within the meaning of Section 1202(c)(3)(B) of the
Code.

                (cc)    Small Business Concern. The Company, together with its
"affiliates" (as that term is defined in Section 121.103 of Title 13 of the Code
of Federal Regulations (the "FEDERAL REGULATIONS")), is a "small business
concern" within the meaning of the Small Business Investment Act of 1958, as
amended (the "SMALL BUSINESS ACT"), and Part 121 of Title 13 of the Federal
Regulations. The information delivered by the Company to Purchaser on SBA Forms
480, 652 and 1031 of the Small Business Administration (the "SBA") delivered in
connection herewith is accurate and complete. The Company is not ineligible for
financing by any SBIC Investor pursuant to Section 107.720 of Title 13 of the
Federal Regulations. The Company acknowledges that BankAmerica Ventures is a
Federal licensee under the Small Business Act.

                (dd)    Broker's or Finder's Fee. No agent, broker, person or
firm acting on behalf of the Company or any of its subsidiaries is, or will be,
entitled to any fee, commission or brokers or finder's fees from any of the
parties hereto, or from any person controlling, controlled by, or under common
control with any of the parties hereto, in connection with this Agreement or any
of the transactions contemplated hereby.

                (ee)    Vote Required. The approval of the sale of the Shares by
the affirmative vote of a majority of the shares of Common Stock voting is the
only vote of the holders of any class or series of the Company's capital stock
necessary to approve the transactions contemplated hereby. Holders of Common
Stock will not have any appraisal rights or similar rights in connection with
the sale of the Shares or any of the other transactions contemplated hereby.

        5.      Representations and Warranties of the Purchasers. Each of the
Purchasers, severally and not jointly, hereby represents and warrants to the
Company as follows:

                (a)     Corporate Power. Each Purchaser is a corporation duly
incorporated or a limited partnership duly formed, validly existing and in good
standing under the laws of the jurisdiction of its incorporation or formation
with the requisite power and authority, corporate or otherwise, to enter into
and to consummate the transactions contemplated hereby and otherwise to carry
out its obligations hereunder and thereunder.

                (b)     Authorization. Each Purchaser has full power to execute,
deliver and perform this Agreement, the Voting Agreement and the Rights
Agreement, and each such agreement has been duly executed and delivered by such
Purchaser and is the legal, valid and, assuming due




                                      -15-
<PAGE>   20

execution by the Company, binding obligation of such Purchaser, enforceable in
accordance with its terms, subject to applicable bankruptcy, insolvency,
moratorium, reorganization or similar laws affecting creditors' rights
generally, and to general equitable principles. The execution, delivery and
performance by such Purchaser of this Agreement, the Voting Agreement and the
Rights Agreement, including the payment of the Purchase Price, have been duly
authorized by all necessary corporate action of such Purchaser.

                (c)     Governmental Approvals. No authorization, consent,
approval, license, exemption of or filing or registration with any court or
governmental department, commission, board, bureau, agency or instrumentality,
domestic or foreign, under any applicable laws, rules or regulations presently
in effect, other than a Control Certificate to be filed with the SBA by
BankAmerica Ventures within thirty (30) days of the Closing Date, is or will be
necessary to be made or obtained by such Purchaser or any of its Affiliates (as
such term is defined below) for, or in connection with, the execution and
delivery of this Agreement, the Voting Agreement or the Rights Agreement, the
consummation of the transactions contemplated hereby or thereby or performance
by such Purchaser of its obligations hereunder or thereunder. For purposes of
this Agreement, the term "AFFILIATE" means, when used with respect to any
specified person, any other person directly or indirectly controlling or
controlled by or under direct or indirect common control with such specified
person. For the purposes of this definition, "control," when used with respect
to any person, means the power to direct the management and policies of such
person, directly or indirectly, whether through the ownership of voting
securities, by contract or otherwise and the terms "affiliated," "controlling"
and "controlled" have meanings correlative to the foregoing.

                (d)     Non-Contravention. The execution, delivery and
performance by the Company of this Agreement, the Voting Agreement and the
Rights Agreement do not and will not (i) contravene or conflict with the charter
documents or bylaws of such Purchaser, or (ii) contravene or conflict with or
constitute a violation of any provision of any law, regulation, judgment,
injunction, order or decree binding upon or applicable to such Purchaser, or
result in a breach of or constitute a default under any material agreement of
such Purchaser.

                (e)     Risk Factors. Each such Purchaser acknowledges that an
investment in the Company involves known and unknown risks, uncertainties and
other factors which may result in such Purchaser's loss of its entire
investment. The Company is an early stage medical device company that develops
and intends to commercialize medical devices for the treatment of certain
cardiovascular and circulatory disorders. The Company's product candidates are
at an early stage of development and have not been approved for marketing by any
regulatory agencies. In addition, significant investment in research and
development, preclinical and clinical testing, regulatory and sales and
marketing activity will be necessary for the Company to commercialize its
product candidates. There can be no assurance that any of the Company's product
candidates can be successfully developed. If successfully developed, there can
be no assurance that the Company's product candidates will be approved for
marketing by regulatory agencies, will result in any meaningful benefits to
patients, will be accepted by the medical community for use in treatment or will
generate sufficient or sustainable revenues to enable the Company to be
profitable.




                                      -16-
<PAGE>   21

                        Each Purchaser acknowledges that such Purchaser has
received a copy of the SEC Reports and reviewed the section captioned "Factors
Affecting Future Operation Results" contained therein, which such factors are
deemed incorporated by reference into this Agreement.

                (f)     No Brokers. The Purchasers have not directly or
indirectly employed any broker, finder or other person (including any employee)
that might be entitled to a fee, commission or other compensation upon the
execution of this Agreement, the Voting Agreement or the Rights Agreement or the
consummation of the transactions contemplated by this Agreement, the Voting
Agreement or the Rights Agreement for which the Purchasers or the Company is or
may be liable.

        6.      Compliance with Securities Laws and Restrictions on Transfer of
Securities.

                (a)     Additional Representations and Warranties and Agreements
of Each Purchaser. Each Purchaser, severally and not jointly, hereby represents
and warrants to, and agrees with, the Company as follows:

                        (i)     The Purchaser (A) is purchasing the Shares for
its own account for investment only and not with a view to any resale or
distribution thereof, except pursuant to an effective registration statement
under the Securities Act of 1933, as amended from time to time (such act,
together with the rules and regulations promulgated thereunder, herein the
"Securities Act"), covering the sale, assignment or transfer or an opinion of
counsel reasonably satisfactory to the Company, concurred in by counsel to the
Company, that such registration is not required; provided, however, that
BankAmerica Ventures shall be permitted to transfer its Shares to Bank of
America Ventures, L.P. without such requirements.

                        (ii)    Such Purchaser has received and carefully
reviewed the Current SEC Filing, and has had the opportunity to obtain and
receive such other information as it deems necessary to understand the business
and financial condition of the Company and to make the investment decision to
purchase the Shares.

                        (iii)   As an investor in companies in the medical
device industry, such Purchaser has such knowledge and experience in financial
and business matters that it is capable of evaluating the merits and risks of
the investment represented by the Shares, and it is able to bear the economic
risk of such investment.

                        (iv)    Such Purchaser is an "accredited investor" as
such term is defined in Rule 501(a) of Regulation D under the Securities Act. If
other than an individual, the Purchaser also represents it has not been
organized for the purpose of acquiring the Shares.

                        (v)     Such Purchaser understands that the Shares are
being issued in a transaction which is exempt from the registration requirements
of the Securities Act by reason of the provisions of Section 4(2) of the
Securities Act and that the Shares will be subject to transfer restrictions and
must be held indefinitely unless subsequently registered under the Securities
Act or an exemption from such registration is available.




                                      -17-
<PAGE>   22

                        The certificate representing the Shares will be affixed
with the following legends:

                "THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED
                UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE
                SOLD, OFFERED FOR SALE, PLEDGED, HYPOTHECATED, ASSIGNED OR
                OTHERWISE TRANSFERRED IN THE ABSENCE OF AN EFFECTIVE
                REGISTRATION STATEMENT UNDER SAID ACT COVERING THE TRANSFER OR
                AN OPINION OF COUNSEL OR OTHER EVIDENCE IN FORM AND SUBSTANCE
                REASONABLY SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS
                NOT REQUIRED."

                        The restrictions on sale, assignment and transfer of the
Shares contained in this Section 6(a)(v) shall terminate at such time as there
shall be delivered to the Company and such Purchaser an opinion of counsel to
such Purchaser, in form and substance reasonably satisfactory to the Company, to
the effect that, due to the lapse of time or otherwise, no registration of such
securities is required under the Securities Act in connection with any
distribution of such securities to the public in the United States. In addition,
at any time after (A) the delivery of such opinion; or (B) such securities are
sold pursuant to and in accordance with an effective registration statement
under the Securities Act covering such sale, the Purchaser shall be entitled to
exchange its certificate representing such securities (or any portion thereof as
to which (A) or (B) above applies) for a new certificate not bearing the first
legend set forth in Section 6(a)(v).

                        (vi)    Such Purchaser understands that the Shares
constitute "restricted securities" within the meaning of Rule 144, promulgated
under the Securities Act. Purchaser is aware that Rule 144, in substance, except
as otherwise provided in subsection (k) of such rule, permits limited public
resale of "restricted securities" acquired, directly or indirectly, from the
issuer thereof (or from an affiliate of such issuer), in a non-public offering
subject to the satisfaction of certain conditions, including, among other
things: (A) the availability of certain public information about the Company;
(B) the resale occurring not earlier than the expiration of the applicable
holding period stated therein; (C) the sale being made through a broker in an
unsolicited "broker's transaction" or in transactions directly with a market
maker (as said term is defined under the Exchange Act) and (D) the amount of
securities being sold during any three-month period not exceeding the specified
limitations stated therein. Such Purchaser also understands that the holding
period under Rule 144 will commence on the Closing Date.

                        (vii)   Such Purchaser further understands that in the
event all of the applicable requirements of Rule 144 are not satisfied,
registration under the Securities Act, compliance with Regulation A, or some
other registration exemption will be required; and that, notwithstanding the
fact that Rule 144 is not exclusive, the staff of the Commission has expressed
its opinion that persons proposing to sell private placement securities other
than in a registered offering and otherwise than pursuant to Rule 144 will have
a substantial burden of proof in establishing that




                                      -18-
<PAGE>   23

an exemption from registration is available for such offers or sales, and that
such persons and their respective brokers who participate in such transactions
do so at their own risk.

                (b)     Agreement Not to Transfer.

                        (i)     Prior to twelve months after the Closing, the
Purchasers shall not, directly or indirectly, Transfer or offer to Transfer any
Shares, unless the Company consents to such Transfer and the transferee agrees
to be bound by this Agreement; provided however, that BankAmerica Ventures shall
be permitted to transfer its Shares to Bank of America Ventures, L.P. without
such requirements.

                        (ii)    As used in this Section 6(b), the term
"TRANSFER" shall mean any sale, transfer, assignment, hypothecation, encumbrance
or other disposition, whether voluntary or involuntary, of Shares. In the case
of a hypothecation, the Transfer shall be deemed to occur both at the time of
the initial pledge and at any pledgee's sale or a sale by any secured creditor
or a retention by the secured creditor of the pledged Shares in complete or
partial satisfaction of the indebtedness for which the Shares are security.

                (c)     Stop Transfer Orders. Such Purchaser understands that
notations restricting the transfer of the Shares will be made on the transfer
records of the Company and that a stop transfer order will be entered with the
Company's transfer agent.

                (d)     Compliance with Section 6. None of the Shares (nor any
interest therein) shall be sold, assigned or offered except in accordance with
the provisions of this Section 6.

        7.      Additional Covenants of the Purchasers Regarding Securities.

                (a)     Forms 13D or 13G. Promptly following the Closing, the
Purchasers shall file with the Commission any reports regarding their ownership
of the Company's Common Stock as required by Section 13(d) of the Exchange Act
and the rules and regulations.

                (b)     Insider Trading Policy; Short Sales.

                        (i)     For so long as a representative of the
Purchasers is a member of the Board of Directors of the Company, the Purchasers
and their Affiliates who have access to Material Confidential Information (as
defined below) of the Company shall agree to comply with the Insider Trading
Compliance Program of the Company including, but not limited to, trade
pre-clearance requirements and trading blackout periods as may be in effect from
time to time. In addition, the Purchasers hereby acknowledge that each Purchaser
is aware, and that each Purchaser will advise such directors, officers,
employees, representatives, agents and advisors who are informed as to the
matters concerning the Company or who have access to the Company's Material
Confidential Information, that United States securities laws prohibit any person
who has received from an issuer material nonpublic information concerning the
issuer from communicating such information to any other person under
circumstances in which it is reasonably foreseeable that such person is likely
to purchase or sell the securities of such issuer, make investment
recommendations based on such




                                      -19-
<PAGE>   24

material nonpublic information or otherwise affect the trading price of such
issuer's securities. The limitations set forth in the immediately preceding
sentence are not intended to preclude the brokerage, investment advisory,
financial advisory, financing, money management, trading, arbitrage or other
similar activities conducted on the Purchasers' behalf by only those directors,
officers, representatives and agents and advisors who do not have access to the
Company's Material Confidential Information or are not aware of the content of
such Material Confidential Information.

                        (ii)    The Purchasers and their Affiliates shall not
make any short sale of, loan, or grant any option for the purchase of, any
equity securities of the Company held by the Purchasers at any time.

                (c)     Material Confidential Information.

                        (i)     In connection with the Purchasers'
decision-making with respect to their acquisition of the Shares, the Company has
furnished to the Purchasers and their officers, directors, employees and agents
(collectively referred to as "PURCHASERS AND AGENTS") financial and other
information which has not theretofore been made available to the public
("MATERIAL CONFIDENTIAL INFORMATION"). The Purchasers and Agents may also
receive Material Confidential Information of the Company in the future. Pursuant
to a Nondisclosure Agreement dated March 5, 1999, the Purchasers have agreed to
refrain from disclosing such information pursuant to the terms and conditions of
such agreement. The Company and the Purchasers wish to replace the
confidentiality obligations of the parties set forth in such agreement with
those provided herein. Therefore, the Purchasers and Agents shall treat all such
Material Confidential Information in accordance with the provisions of this
agreement and to take or abstain from taking certain other actions herein set
forth. The term "Material Confidential Information" does not include information
which (i) was already in the Purchasers' or Agents' possession prior to the
disclosure by the Company of the Material Confidential Information, provided
that such information is not known by the Purchasers and Agents to be subject to
another confidentiality agreement with or other obligation of secrecy to the
Company or another party, (ii) becomes generally available to the public other
than as a result of disclosure by the Purchasers or Agents or (iii) becomes
available to you on a non-confidential basis from a source other than the
Company or its advisors, provided that such source is not known to the
Purchasers or Agents to be bound by a confidentiality agreement with or other
obligation of secrecy to the Company or another party. The Purchasers agree that
the Company's Material Confidential Information will be used solely for the
purpose of monitoring the Purchasers' holdings of the Shares. The Purchasers
also agree that the Purchasers and Agents will not disclose any of the Company's
Material Confidential Information now or hereafter received or obtained from the
Company or its representatives to any third party or otherwise use or permit the
use of the Material Confidential Information, except as required by applicable
law or legal process, without the prior written consent of the Company;
provided, however, that any such Material Confidential Information of the
Company may be disclosed to such of the Purchasers' representatives who need to
know such information for the purpose of monitoring the Purchasers' investment
in the Shares; in which case it is understood that the Purchasers'
representatives, directors, officers, employees, agents and advisors shall be
informed by the Purchasers of the confidential nature of such information and
shall be directed by the Purchasers to treat such information confidentially. In
the




                                      -20-
<PAGE>   25

event that the Purchasers and Agents or any of their representatives becomes
legally compelled (by deposition, interrogatory, request for documents,
subpoena, civil investigative demand, other demand or rules and regulations
under the federal securities laws or similar process, but not pursuant to laws
and regulations which Purchasers and Agents are subject to as a result of being
an affiliate of a national bank) to disclose any of the Material Confidential
Information, the Purchasers and Agents shall provide the Company with prompt
prior written notice of such requirement prior to such disclosure. In the event
that a protective order or other remedy is not obtained, or that the Company
waives compliance with the provisions hereof, each Purchaser agrees to furnish
only that portion of the Material Confidential Information which such Purchaser
is legally required to furnish and, where appropriate, to exercise the
Purchasers' and Agents' reasonable efforts to obtain assurances that
confidential treatment will be accorded such Material Confidential Information.

                (d)     Reporting Obligations Pursuant to Section 16. The
Purchasers agree to file with the Commission any reports required to be filed
pursuant to Section 16(a) of the Exchange Act and the rules and regulations
promulgated thereunder by such Purchasers, their officers, directors, employees
or affiliates or by such Purchasers' nominee to the Company's Board of Directors
within the time such filings are required to be made and to provide the Company
with a copy of all such filings promptly thereafter.

        8.      Additional Covenants of the Company.

                (a)     Inspection. For so long as a Purchaser holds at least
500 shares of Series B Convertible Preferred Stock (or the Common Stock issuable
or issued upon conversion of 500 shares of Series B Convertible Preferred
Stock), the Company shall permit each the Purchaser, at such Purchaser's
expense, to visit and inspect the Company's properties, to examine its books of
account and records and to discuss the Company's affairs, finances and accounts
with its officers, all at such reasonable times as may be requested by the
Investor; provided, however, that the Company shall not be obligated pursuant to
this Section 8(a) to provide access to any information that it reasonably
considers to be a competitively sensitive information unless such Purchaser has
executed a non-disclosure agreement in a form reasonably acceptable to the
Company.

                (b)     Board of Directors. The following actions will be taken
with respect to the Company's Board of Directors.

                        (i)     The existing Board of Directors will resign
effective as of the Closing Date.

                        (ii)    At or prior to the Closing the Company shall
amend its Bylaws, if required, to fix the number of directors to five (5)
members with a provision that the number of directors may be increased to seven
(7) members with the consent of the directors who are representatives of the
Purchasers.

                        (iii)   The holders of the Series B Convertible
Preferred shall have the right to nominate three (3) members of the Company's
Board of Directors, two (2) of which shall be representatives of BankAmerica
Ventures and one (1) of which shall be a representative of Morgan




                                      -21-
<PAGE>   26

Stanley Dean Witter Venture Partners ("MSDW"). In the event that the number of
the Company's directors exceeds five (5), the holders of Series B Convertible
Preferred shall have the right to nominate one (1) additional director. All
members of the Company's Board of Directors nominated by holders of Series B
Convertible Preferred shall have the right to be members of all committees of
the Board of Directors. The Company shall not file any proxy or other materials
with the SEC opposed to the re-election of such persons as directors of the
Company unless such director has committed any actions giving the stockholders
of the Company the right to remove such director for cause and shall use all
reasonable efforts to secure the election of such persons as directors.

                        (iv)    The remaining directors will include (i) one (1)
representative of the Company's management, who shall be the Company's Chief
Executive Officer and (ii) one (1) outside representative appointed by a
majority of the Board of Directors.

                        (v)     As of the execution of this Agreement and in the
event that BankAmerica Ventures, the State of Wisconsin Investment Board
("SWIB") or MSDW do not have a representative on the Company's Board of
Directors, or any committee thereof then the Company shall invite a
representative of BankAmerica Ventures, SWIB or MSDW, as the case may be, to
attend all meetings of its Board of Directors or any committee thereof in a
nonvoting observer capacity and, in this respect, shall give such representative
copies of all notices, minutes, consents, and other materials (the "BOARD
MATERIALS") that it provides to its directors at the same time as such Board
Materials are provided to any of its directors; provided, however, that the
Company reserves the right to withhold any information and to exclude such
representative of BankAmerica Ventures, SWIB or MSDW from any meeting or portion
thereof if the disclosure of such material or discussion, in the opinion of
counsel to the Company, would jeopardize the Company's attorney client
privilege. The right granted to BankAmerica Ventures, SWIB and MSDW to attend
meetings of the Company's Board of Directors and to receive Board Materials
shall not be assignable.

                (c)     Right of First Offer. Subject to the terms and
conditions specified in this Section 8(c), the Company hereby grants to each
Purchaser a right of first offer to purchase its Pro Rata Share (as hereinafter
defined) (in whole or in part) with respect to future sales by the Company of
its Future Shares (as hereinafter defined). Each Purchaser shall be entitled to
assign or apportion the right of first offer hereby granted it among itself and
its partners and affiliates (including in the case of a venture capital fund
other venture capital funds affiliated with such fund) in such proportions as it
deems appropriate. For purposes of this Section 8(c), a Purchaser's "PRO RATA
SHARE" of Future Shares shall mean that number of Future Shares that equals the
proportion that (x) the number of shares of Common Stock issued and held, or
issuable upon conversion of the Shares then held, by such Purchaser bears to (y)
the total number of shares of Common Stock of the Company then outstanding
(assuming full conversion of all convertible securities).

                        (i)     Each time the Company proposes to offer any
shares of, or securities convertible into or exercisable for any shares of, any
class of its capital stock, including any debt securities convertible into
equity (collectively, "FUTURE SHARES"), the Company shall first make an offering
of such Future Shares to each Purchaser in accordance with the following
provisions:




                                      -22-
<PAGE>   27

                        (ii)    The Company shall deliver a notice by confirmed
facsimile transmission, certified mail or a nationally recognized overnight
courier service ("NOTICE") to each of the Purchasers stating (i) its bona fide
intention to offer such Future Shares, (ii) the number of such Future Shares to
be offered, and (iii) the price and a summary of the terms, if any, upon which
it proposes to offer such Future Shares.

                        (iii)   By written notification to the Company within
ten (10) calendar days after receipt of the Notice, each Purchaser may elect to
purchase or obtain, at the price and on the terms specified in the Notice, up to
its Pro Rata Share of such Future Shares. The Company shall promptly, in
writing, inform each Purchaser that elects to purchase all the shares available
to it (a "FULLY-EXERCISING PURCHASER") of any other Purchaser's failure to do
likewise. During the ten (10) day period commencing after such information is
given, each Fully-Exercising Purchaser may elect to purchase that portion of the
Future Shares for which Purchasers were entitled to subscribe but that were not
subscribed for by the Purchasers that is equal to the proportion that the number
of shares of Common Stock issued and held, or issuable upon conversion of Shares
then held, by such Fully-Exercising Purchaser bears to the total number of
shares of Common Stock issued and held, or issuable upon conversion of the
Shares then held, by all Fully-Exercising Purchasers who wish to purchase some
of the unsubscribed Future Shares.

                        (iv)    If all Future Shares that the Purchasers are
entitled to obtain pursuant to Section 8(c) are not elected to be obtained as
provided herein, the Company may, during the sixty (60) day period following the
expiration of the period provided in Section 8(c)(iii) hereof, offer the
remaining unsubscribed portion of such Future Shares to any person or persons at
a price not less than, and upon terms no more favorable to the offeree than
those specified in the Notice. If the Company does not enter into an agreement
for the sale of the Future Shares within such period, or if such agreement is
not consummated within sixty (60) days of the execution thereof, the right
provided hereunder shall be deemed to be revived and such Future Shares shall
not be offered unless first reoffered to the Purchasers in accordance herewith.

                        (v)     The right of first offer in this Section 8(c)
shall not be applicable (i) to any shares of Common Stock (including shares
issued upon exercise of stock options outstanding as of the date of this
Agreement) issuable or issued to employees, consultants or directors directly or
pursuant to stock option plans or arrangements approved by the Board of
Directors, including each board representative of the Purchasers, (ii) to shares
of Common Stock issued or issuable in a firm commitment underwritten public
offering, (iii) to shares of Common Stock issued or issuable upon conversion of
shares of Series A Participating Preferred Stock or Series B Convertible
Preferred Stock or as a dividend or distribution on the shares of Series A
Participating Preferred Stock or Series B Convertible Preferred Stock, (iv) to
securities issued or issuable to banks or equipment lessors, provided such
issuances are for other than primarily equity financing purposes and provided
such issuances are approved by the Board of Directors, including each board
representative of the Purchasers, (v) to securities issued in connection with
business combinations or corporate partnering agreements approved by the Board
of Directors, including each board representative of the Purchasers, or (vi) to
securities issued in strategic financings accompanies by commercial




                                      -23-
<PAGE>   28

development, joint ventures or other related agreements approved by the Board of
Directors, including each board representative of the Purchasers.

                        (vi)    The rights granted to the Purchasers under
Section 8(c) hereof may be assigned to any transferee or assignee who is (a) a
subsidiary, parent, general partner, limited partner, retired partner, member or
retired member of a Purchaser, (b) a Purchaser's ancestors, descendants or
spouse or to trusts for the benefit of such persons or such Purchaser or (c) a
client, employee or member of a Purchaser, provided that (i) such transfer may
otherwise be effected in accordance with applicable securities laws, (ii) the
Company is given written notice of any such transfer five (5) Business Days
prior to the date of said transfer, stating the name and address of said
transferee or assignee and identifying the securities with respect to which such
registration rights are being assigned and (iii) the transferee or assignee of
such rights is not deemed by the Board of Directors of the Company, in its
reasonable judgment, to be a competitor of the Company and provided further that
the transferee or assignee of such rights assumes in writing in a form
reasonably acceptable to the Company the obligations of the Purchasers under
this Agreement.

                (d)     Sonometrics License. The Company will use its best
efforts to execute an agreement to exclusively license or acquire, for an
aggregate purchase price no greater than $1,500,000, Sonometric's patent
portfolio relating to technology and methods for three dimensional digital
ultrasound tracking. The Patent Portfolio will include, but not be limited to
the following: Patent Numbers 5,515,853, 5,779,638, 5,795,298, 5,797,849,
5,817,022 and 5,868,673 and all currently active applications that are
continuations, continuations-in-part, or divisional properties, and all
corresponding foreign-filed patents and patent applications.

                (e)     Chief Executive Officer. In the event that a new Chief
Executive Officer, (who shall be acceptable to the Purchasers) shall have
commenced employment with the Company prior to the Closing, the Company shall
use it best efforts to retain such Chief Executive Officer through the Closing
Date.

                (f)     Reverse Stock Split; Bylaws. The Company shall use its
best efforts to obtain stockholder approval to amend (i) the Certificate of
Incorporation to effect a five for one reverse stock split of the Company's
Common Stock; and (ii) the Bylaws to require the affirmative vote of the holders
of at least a majority of the voting power of all of the then outstanding shares
entitled to vote, voting together as a single class, to (I) increase the number
of shares reserved for issuance under the Company's Stock Plans, such that the
quotient of (A) the shares outstanding issued pursuant to the Company's Stock
Plans plus the shares available for issuance under the Company's Stock Plans
plus additional shares proposed to be issued under the Company's Stock Plans;
divided by (B) the total outstanding capital stock of the Company, including any
outstanding convertible preferred stock, on an as converted basis, is not
greater than thirty percent (30%); and (II) reprice any options granted after
May 20, 1999 to purchase shares of Common Stock under the Company's Stock Plans,
provided that the Company shall only reprice each options outstanding prior to
May 20, 1999 one time.




                                      -24-
<PAGE>   29

                (g)     Reservation of Common Stock. The Company will at all
times reserve and keep available, solely for issuance and delivery upon the
conversion of the Shares and all Common Stock issuable from time to time upon
such conversion.

                (h)     Proprietary Information and Inventions Agreement. The
Company shall require all employees and consultants to execute and deliver a
Proprietary Information and Inventions Agreement in a form which is acceptable
to the Purchasers.

                (i)     Qualified Small Business. The Company will use its best
efforts to comply with the reporting and recordkeeping requirements of Section
1202 of the Code, any regulations promulgated thereunder and any similar state
laws and regulations, and agrees not to repurchase any stock of the Company if
such repurchase would cause the Shares not to so qualify as "Qualified Small
Business Stock." The Company further covenants to submit to its shareholders and
to state and federal taxation authorities such form and filings as may be
required to document such compliance, including the California Franchise Tax
Board Form 3565, Small Business Stock Questionnaire, with its franchise or
income tax return for the current income year.

                (j)     Small Business Administration Matters.

                        (i)     The proceeds from the issuance and sale of the
Shares will be used by the Company for working capital and other general
corporate purposes. The Company will provide to each Purchaser identified as a
licensed Small Business Investment Company on Schedule A hereto (each an "SBIC
INVESTOR"), and to the Small Business Administration (the "SBA"), reasonable
access to the Company's books and records for the purpose of confirming the use
of proceeds by the Company.

                        (ii)    For a period of one (1) year following the
Closing (as defined in the Purchase Agreement), the Company will not change the
nature of its business activity if such change would render the Company
"ineligible" as provided in Section 107.720 of Title 13 of the Federal
Regulations.

                        (iii)   So long as any SBIC Investor holds any
securities of the Company, the Company will at all times comply with the
non-discrimination requirements of Sections 112, 113 and 117 of Title 13 of the
Federal Regulations.

                        (iv)    Within forty-five (45) days after the end of
each fiscal year of the Company, and at such other times as an SBIC Investor may
reasonably request in writing to the Company, the Company will deliver to such
SBIC Investor a written assessment in form and substance reasonably satisfactory
to such SBIC Investor, as to the economic impact of such SBIC Investor's
financing of the Company, specifying the full-time equivalent jobs created or
retained in connection with such investment, and the impact of such financing on
the Company's business in terms of profits and with respect to taxes paid by the
Company and its employees. The Company will promptly provide each SBIC Investor
who so requests in writing to the Company, specifying in such written request
the nature of such required information in reasonable detail, such information
as such SBIC Investor requests, in order to permit such SBIC Investor to comply
with such SBIC




                                      -25-
<PAGE>   30

Investor's obligations under the Small Business Act of 1958, as amended (the
"SMALL BUSINESS ACT"), and the regulations promulgated thereunder and related
thereto. Any submission of financial information pursuant to this Section 8(j)
shall be under cover of a certificate executed by the Company's President, Chief
Executive Officer Chief Financial Officer or Treasurer, certifying that such
information (i) relates to the Company, (ii) to the best of the Company's
knowledge is accurate and (iii) if applicable, has been audited by the Company's
independent auditors.

                (k)     Regulatory Compliance Cooperation. In the event that any
SBIC Investor determines that it has a Regulatory Problem (as defined below), it
shall have the right to transfer its Shares in compliance with applicable state
and federal securities laws, but without regard to any other restrictions on
transfer set forth in this Agreement or the Rights Agreement (provided that the
transferee agrees to become a party to each such agreement), and the Company
shall take all such actions as are reasonably requested by such SBIC Investor in
order to (i) effectuate and facilitate any transfer by it of any securities of
the Company then held by it to any person designated by such SBIC Investor, (ii)
permit such SBIC Investor (or any of its affiliates) to exchange all or any
portion of any voting security then held by it on a share-for-share basis for
shares of a nonvoting security of the Company, which nonvoting security shall be
identical in all respects to the voting security exchanged for it, except that
it shall be nonvoting and shall be convertible into a voting security on such
terms as are requested by it in light of regulatory considerations then
prevailing, and (iii) amend this Agreement, as amended from time to time, to
effectuate and reflect the foregoing. The parties to this Agreement agree to
vote all of the Company's securities held by them in favor of such amendments
and actions. For purposes of this Agreement, a "REGULATORY PROBLEM" means any
set of facts or circumstances wherein it has been asserted by any governmental
regulatory agency that an SBIC Investor is not entitled to hold, or exercise any
significant right with respect to, the underlying securities into which the
Shares are convertible.

                (l)     Proxy Statement. As promptly as practicable after the
execution of this Agreement, the Company shall prepare and file with the
Commission preliminary proxy materials which shall constitute the preliminary
Proxy Statement in connection with the sale of the Shares. As promptly as
practicable after comments are received from the Commission with respect to the
preliminary proxy materials, the Company shall file with the Commission the
definitive Proxy Statement, which Proxy Statement shall comply in all material
respects with the applicable requirements of the Exchange Act and Securities
Act, respectively, and the applicable rules and regulations of the Commission
thereunder.

                        (i)     The Company shall cause the Proxy Statement to
be mailed to its stockholders and, if necessary, after the Proxy Statement shall
have been so mailed, promptly circulate amended, supplemental or supplemented
proxy material and, if required in connection therewith, resolicit proxies.

                        (ii)    The Company warrants that the information
provided (or incorporated by reference to filings made with the Commission by
the Company) in the Proxy Statement, on the date the Proxy Statement is filed
with the Commission and on the date it is first mailed to the Company's
stockholders, shall not contain any untrue statement of a material fact or omit
to state




                                      -26-
<PAGE>   31

any material fact necessary in order to make the statements therein, in light of
the circumstances under which they were made, not misleading. The Company shall
notify Purchasers promptly of the receipt of any comments by the Commission and
of any request by the Commission for amendments or supplements to the Proxy
Statement, or for additional information, and shall supply one another with
copies of all correspondence with the Commission with respect to any of the
foregoing. If at any time prior to the meeting of Stockholders to consider sale
of the Shares, any event should occur relating to the Company, its subsidiaries
or any of their respective affiliates, directors or officers which should be
described in an amendment or supplement to the Proxy Statement, the Company
shall promptly inform Purchasers. Whenever any event occurs which should be
described in an amendment or supplement to the Proxy Statement, the Company
shall, upon learning of such event, cooperate promptly to file and clear with
the Commission and, if applicable, mail such amendment or supplement to the
stockholders of the Company.

                        (iii)   The Company shall use its best efforts to obtain
approval for quotation on the Nasdaq National Market, upon official notice of
issuance, of the Common Stock to be issued upon conversion of the Shares.

                        (iv)    The Company shall make all necessary filings
with respect to the sale of Shares under the Securities Act and the Exchange Act
and the rules and regulations thereunder and under applicable blue sky or
similar laws and shall use their reasonable efforts to obtain required approvals
and clearances with respect thereto.

                (m)     Stockholder Approvals; Recommendations. The Company,
acting through its Board of Directors, shall (i) call, give notice of, convene
and hold a special meeting of the holders of Company Common Stock for the
purpose of voting upon the sale of the Shares (the "SPECIAL MEETING") and (ii)
include in the Proxy Statement the recommendation of its Board of Directors that
holders of Common Stock approve the sale of Shares at the Special Meeting. The
Special Meeting will be held as promptly as practicable. The Company shall
ensure that the Special Meeting is called, noticed, convened, held and
conducted, and that all proxies solicited, in connection with the Special
Meeting are solicited in compliance with all applicable laws, regulations,
orders, judgments and decrees. The Company shall not be permitted to delay,
adjourn, postpone or reschedule the Special Meeting, or delay the vote of the
Company's stockholders on the sale of Shares, without Purchasers' prior written
consent (which consent will not be unreasonably withheld or delayed if the need
for the delay, adjournment, postponement or rescheduling of the Special Meeting
or the delay in such vote is attributable solely to factors outside the
Company's control). Notwithstanding anything to the contrary contained in this
Section 8(m), the Company's Board of Directors shall not be permitted to
withdraw or modify its recommendation in favor of the sale of Shares.

                (n)     Notices of Certain Events. The Company hereto shall
promptly notify Purchasers of:

                        (i)     the receipt by the Company of any notice or
other communication from any person alleging that the consent of such person is
or may be required in connection with the transactions contemplated by this
agreement;




                                      -27-
<PAGE>   32

                        (ii)    the receipt by the Company of any notice or
other communication from any governmental entity in connection with the
transactions contemplated by this agreement;

                        (iii)   the Company obtaining knowledge of any actions,
suits, claims investigations or proceedings commenced or threatened against,
relating to or involving or otherwise affecting the Company or Purchasers, as
the case may be, or any of their respective subsidiaries which relate to the
consummation of the transactions contemplated by this agreement; and

                        (iv)    the Company obtaining knowledge of the
occurrence, or failure to occur, of any event which occurrence or failure to
occur will be likely to cause (A) any representation or warranty contained in
this Agreement to be untrue or inaccurate in any material respect, or (B) any
material failure of any party to comply with or satisfy any covenant, condition
or agreement to be complied with or satisfied by it under this Agreement;
provided, however, that no such notification shall affect the representations,
warranties or obligations of the parties or the conditions to the obligations of
the parties hereunder.

               (o)    Efforts. The Company shall, and shall cause its respective
subsidiaries to, cooperate and use their reasonable efforts to take, or cause to
be taken, all appropriate action, and to make, or cause to be made, all filings
necessary, proper or advisable under applicable laws and regulations to
consummate and make effective the transactions contemplated by this Agreement,
including, without limitation, their reasonable efforts to (i) obtain, prior to
the Closing Date, all licenses, permits, consents, approvals, authorizations,
qualifications and orders of governmental authorities and parties to contracts
with the Company and its subsidiaries and (ii) defend against and respond to any
action, suit, proceeding or investigation relating to the transactions
contemplated by this Agreement, in each case as are necessary for consummation
of the transactions contemplated by this Agreement and to fulfill the conditions
to the sale of Shares.

               (p)    No Solicitation.

                        (i)     The Company agrees that until the Closing Date,
the Company shall not, directly or indirectly, and the Company shall ensure that
its Representatives (as defined below) do not, directly or indirectly: (i)
solicit, initiate, encourage or induce the making, submission or announcement of
any Acquisition (as defined below) or take any action that could reasonably be
expected to lead to an Acquisition Proposal (as defined below); (ii) furnish any
information regarding the Company or any direct or indirect subsidiary of the
Company to any Person in connection with or in response to an Acquisition
Proposal or potential Acquisition Proposal; or (iii) engage in discussions with
any Person (as defined below) with respect to any Acquisition Proposal. The
Company shall immediately cease and discontinue, and the Company shall ensure
that its Representatives immediately cease and discontinue, any existing
discussions with any Person that relate to any Acquisition Proposal. For
purposes of this Section 8(p):

                                (1)     "ACQUISITION PROPOSAL" shall mean any
offer, proposal or inquiry contemplating or otherwise relating to any
Acquisition Transaction.




                                      -28-
<PAGE>   33

                                (2)     "ACQUISITION TRANSACTION" shall mean any
transaction (other than as contemplated by the Purchase Agreement) involving:

                                        a)      any merger, consolidation,
amalgamation, share exchange, business combination, issuance of securities,
acquisition of securities, tender offer, exchange offer or other similar
transaction (i) in which the Company is a constituent company, (ii) in which a
person or "group" (as defined in the Exchange Act of 1934, as amended and the
rules promulgated thereunder) of persons directly or indirectly acquires the
Company or more than 15% of the Company's business or directly or indirectly
acquires beneficial or record ownership of securities representing, or
exchangeable for or convertible into, more than 15% of the outstanding
securities of any class of voting securities of the Company, or (iii) in which
the Company issues securities representing more than 15% of the outstanding
securities of any class of voting securities of the Company;

                                        b)      any sale, lease, exchange,
transfer, license, acquisition or disposition of more than 15% of the assets of
the Company; or

                                        c)      any liquidation or dissolution
of the Company.

                                (3)     "PERSON" shall mean any (i) individual,
(ii) corporation, limited liability company, partnership or other entity, or
(iii) governmental authority.

                                (4)     "REPRESENTATIVES" shall mean officers,
directors, employees, agents, attorneys, accountants, advisors and
representatives.

                        (ii)    Neither the Board of Directors of the Company
nor any committee thereof shall (i) withdraw or modify, or propose or resolve to
withdraw or modify, in a manner adverse to Purchasers, the approval or
recommendation by such Board of Directors or any such committee of this
Agreement or the sale of Shares, (ii) approve or recommend, or propose to
approve or recommend, any Acquisition Proposal or (iii) enter into any agreement
or letter of intent with respect to any Acquisition Proposal.

                        (iii)   In addition to the obligations of the Company
set forth in Sections 8(p)(i) and 8(p)(ii) above, the Company shall promptly
advise Purchasers orally and in writing of any request for information or of any
Acquisition Proposal, or any inquiry with respect to or which could reasonably
be expected to lead to any Acquisition Proposal, the material terms and
conditions of such request, Acquisition Proposal or inquiry, and the identify of
the person making any such Acquisition Proposal or inquiry. The Company shall
use its best efforts to keep Purchasers fully informed of the status and details
of any such request, Acquisition Proposal or inquiry.

                        (iv)    Notwithstanding the foregoing, if the Company
receives a bona fide, written, unsolicited offer to acquire all of the equity of
the Company or substantially all of the assets of the Company at a higher
valuation than that implied for the Company by this Agreement (a "HIGHER OFFER")
the Company may enter into a confidentiality agreement with, provide non-public
information to, or enter into discussions with, such offeror. The Company shall
inform the




                                      -29-
<PAGE>   34

Purchasers immediately upon receipt of the Higher Offer in writing of the
identity of the offeror and the terms and conditions of the Higher Offer. In the
event that the Company shall receive a Higher Offer prior to the Closing Date
and consummate a sale of securities or material assets to, or merge with or be
acquired by, any Person other than the Purchasers, then the Company shall pay to
the Purchasers, in proportion to the Purchaser's participation in the Bridge
Financing (as defined in Section 9(xvi) below, $1 million in cash upon the
closing of such transaction.

        9.      Closing Conditions.

                (a)     Conditions to Purchaser's Obligations at the Closing.
The Purchaser's obligation to purchase the Shares at the Closing is subject to
the fulfillment on or prior to the Closing of the following conditions, any one
or more of which may be waived in whole or in part by the Purchaser:

                        (i)     Compliance with Laws. At the Closing, the sale
and issuance of the Shares shall be legally permitted by all laws and
regulations to which the Purchaser or the Company is subject.

                        (ii)    Representations and Warranties. Each of the
representations and warranties of the Company set forth in Section 4 shall be
true and correct as if made on the Closing Date.

                        (iii)   Performance. The Company shall have performed
and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with by it on or before
the Closing Date.

                        (iv)    Compliance Certificate. The Chief Executive
Officer of the Company shall deliver to the Purchaser on the Closing Date a
certificate certifying that the conditions set forth in clauses (ii), (iii), (v)
- - (vii), (x) - (xiii), (xiv), (xv) and (xviii) of this Section 9(a) have been
fulfilled.

                        (v)     Stockholder Approval. The Company shall have
satisfied the stockholder approval requirement provisions of the Nasdaq Stock
Market, or any other exchange or market on which the Common Stock is then listed
or traded, with respect to the issuance of 20% or more of a company's capital
stock.

                        (vi)    Increased Option Pool. The Company shall have
received stockholder approval to reserve an additional 4,000,0000 shares of
Common Stock to be available for grant to management and employees under the
Company's 1991 Stock Option Plan.

                        (vii)   Certificate of Designation. The Certificate of
Designation shall have been duly filed with the Secretary of State of Delaware,
and the Company shall have delivered a copy thereof to the Purchasers certified
as filed by the office of the Secretary of State of Delaware.




                                      -30-
<PAGE>   35

                        (viii)  Rights Agreement. The Company shall have
executed and delivered to the Purchasers the Rights Agreement.

                        (ix)    Voting Agreement. The Company and certain
officers, directors, and holders of the Company's outstanding Common Stock
holding a minimum of 40% of the outstanding Common Stock shall have executed and
delivered to the Purchasers the Voting Agreement.

                        (x)     Shareholders Rights Agreement. The Company shall
have terminated the existing Shareholders Rights Agreement dated June 13, 1995.

                        (xi)    Preferred Shares Rights Agreement. Prior to the
earlier of thirty (30) days from the date hereof or the Closing Date, the
Company shall have taken all actions required under the Preferred Shares Rights
Agreement between the Company and Norwest Bank Minnesota, N.A. dated as of April
22, 1997 (the "RIGHTS PLAN") to permit the issuance of the Shares and the
consummation of the transactions contemplated by this Agreement, the Certificate
of Designation, the Voting Agreement and the Rights Agreement, without the
triggering of any rights thereunder. In addition the Company shall have amended
the Rights Plan to provide that the Shares held by the Purchasers shall receive
upon issuance of the Shares the same rights as the holders of Common Stock under
the Rights Plan.

                        (xii)   Adverse Change. Since the date of the financial
statements included in the Company's Quarterly Report on Form 10-Q last filed
prior to the date of this Agreement, no event which had a Material Adverse
Effect and no material adverse change in the financial condition or prospects of
the Company shall have occurred.

                        (xiii)  Absence of Litigation. There shall be no action,
suit, investigation or proceeding pending or threatened in any court or before
an arbitrator or governmental authority that could have a Material Adverse
Effect on the Company or the purchase of the Shares.

                        (xiv)   Opinion of Counsel. The Company shall have
delivered to the Purchasers an opinion of counsel for the Company, dated as of
the Closing Date, in form and substance reasonably acceptable to the Purchasers.

                        (xv)    Consents. The Company and the Purchasers shall
have obtained all consents (including all governmental and regulatory consents,
approvals, or authorizations required in connection with the valid execution and
delivery of this Agreement, the Voting Agreement and the Rights Agreement),
permits and waivers necessary or required to be obtained on or prior to the
Closing Date for consummation of the transactions contemplated hereby.

                        (xvi)   Bridge Financing. The Company shall have
obtained interim financing of $3 million to fund its operations by May 21, 1999
(the "BRIDGE FINANCING").

                        (xvii)  Chief Executive Officer. The new Chief Executive
Officer acceptable to the Purchasers remains employed by the Company in such
capacity on the Closing Date.




                                      -31-
<PAGE>   36


                        (xviii) SBA Matters. The Company shall have executed and
delivered to the BankAmerica Ventures a Size Status Declaration on SBA Form 480
and an Assurance of Compliance on SBA Form 652, and shall have provided to
BankAmerica Ventures, the information requested by BankAmerica Ventures
necessary for the preparation by BankAmerica Ventures of a Portfolio Financing
Report on SBA Form 1031.

                        (xix)   Proceedings and Documents. All corporate and
other proceedings in connection with the transactions contemplated in connection
with each Purchaser's purchase of the Shares and all documents incident thereto
shall be reasonably satisfactory in form and substance to the Purchasers and the
Purchasers' counsel, and they shall have received all such counterpart original
and certified or other copies of such documents as they may reasonably request.

                        (xx)    Delivery of Stock Certificate. The Company shall
have caused the delivery to the Purchasers of a stock certificate representing
the Purchasers' ownership of the Shares.

                (b)     Conditions to Company's Obligations at the Closing. The
Company's obligation to sell and issue the Shares at the Closing is subject to
the fulfillment on or prior to the Closing of the following conditions, any one
or more of which may be waived in whole or in part by the Company:

                        (i)     Compliance with Laws. At the Closing, sale and
issuance of the Shares shall be legally permitted by all laws and regulations to
which the Purchasers or the Company are subject.

                        (ii)    Representations and Warranties. Each of the
representations and warranties of the Purchasers set forth in Sections 5 and 6
shall be true and correct as if made on the Closing Date.

                        (iii)   The Purchase Price. The Purchasers shall have
delivered to the Company the Purchase Price in accordance with Section 3 hereof.

                        (iv)    Performance. The Purchasers shall have performed
and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with on or before the
Closing Date.

                        (v)     Other Agreements. The Purchasers shall have
executed and delivered to the Company the Rights Agreement.

                        (vi)    Consents. The Company and the Purchasers shall
have obtained all consents (including all governmental and regulatory consents,
approvals, or authorizations required in connection with the valid execution and
delivery of this Agreement, the Voting Agreement and the Rights Agreement),
permits and waivers necessary or required to be obtained on or prior to the
Closing Date for consummation of the transactions contemplated hereby.




                                      -32-
<PAGE>   37

                        (vii)   Proceedings and Documents. All corporate and
other proceedings in connection with the transactions contemplated in connection
with the sale and issuance of the Shares and all documents incident thereto
shall be reasonably satisfactory in form and substance to the Company and the
Company's counsel, and they shall have received all such counterpart original
and certified or other copies of such documents as they may reasonably request.

        10.     General Provisions.

                (a)     Notices. All notices and other communication required or
appropriate to be given hereunder shall be in writing and shall be delivered by
hand or mailed by certified mail, return receipt requested, or sent by telex or
facsimile (in which case a confirming copy shall also be sent by certified mail
or courier), to the following respective addresses or to such other addresses as
may be specified in any notice delivered or mailed as above provided:

                        (i)     If to the Purchasers, to:

                                BankAmerica Ventures
                                950 Tower Lane, Suite 700
                                Foster City, California 94404
                                Telephone:   (650) 378-6000
                                Facsimile:   (650) 378-6040

                                Attention:   Mark Brooks and Robert S. Fore

                                and

                                Morgan Stanley Dean Witter Venture Partners
                                1221 Avenue of America, 33rd floor
                                New York, NY  10020
                                Phone:  212-762-8683
                                Fax:  212-762-8424

                                Attention:   Fazle Husain

                                with a copy to:

                                Cooley Godward LLP
                                Five Palo Alto Square
                                Palo Alto, CA 94306-2155
                                Telephone:   (650) 843-5000
                                Facsimile:   (650) 857-0663

                                Attention:   Julia L. Davidson, Esq.

                                and



                                      -33-
<PAGE>   38

                                Davis, Polk, Wardwell
                                450 Lexington Ave.
                                New York, NY  10017
                                Telephone 212-450-4350
                                Facsimile: 212-450-5515

                                Attention:     John Bick, Esq.

                        (ii)    If to the Company to:

                                Cardiac Pathways Corporation
                                995 Benecia Avenue
                                Sunnyvale, California 94086
                                Telephone:   (408) 737-0505
                                Facsimile:   (408) 737-1700

                                Attention: G. Michael Latta,
                                Chief Financial Officer

                                with a copy to:

                                Wilson Sonsini Goodrich & Rosati
                                650 Page Mill Road
                                Palo Alto, CA 94304-1050
                                Telephone:   (650) 493-9300
                                Facsimile:   (650) 845-5000

                                Attention:   Chris F. Fennell, Esq.

Any notice or other communication delivered by hand or mailed shall be deemed to
have been delivered on the date on which such notice or communication is
delivered by hand, or in the case of certified mail deposited with the
appropriate postal authorities on the date when such notice or communication is
actually received, and in any other case shall be deemed to have been delivered
on the date on which such notice or communication is actually received.

                (b)     Governing Law. The parties have agreed that this
Agreement will be governed by and construed in accordance with the laws of the
State of California.

                (c)     Amendments. Any term of this Agreement may be amended
and the observance of any term of this Agreement may be waived (either generally
or in a particular instance and either retroactively or prospectively), only
with the written consent of the Company and the holders of a majority of the
Shares and Conversion Shares then outstanding. Any amendment or waiver effected
in accordance with this paragraph shall be binding upon each holder of any
securities purchased under this Agreement at the time outstanding (including
securities into which such securities are convertible), each future holder of
all such securities, and the Company.

                (d)     Assignment.




                                      -34-
<PAGE>   39

                        (i)     Except as set forth in this Section 10(d), none
of the rights or obligations of the Company and each Purchaser may be assigned
or transferred without the prior written consent of the other party hereto.

                        (ii)    The Company and each Purchaser may assign all of
its rights and obligations under this Agreement in connection with a merger or
similar reorganization or the sale of all or substantially all of its assets.
This Agreement shall survive any such merger or reorganization of the Company or
a Purchaser with or into, or such sale of assets to, another party and no
consent for such merger, reorganization or sale shall be required hereunder.

                        (iii)   Each Purchaser may assign its rights and
obligations to a subsidiary, parent, LLC, general partner, limited partner,
retired partner, member or retired member of a Purchaser, provided the assignee
is not deemed by the Board of Directors of the Company, in its reasonable
judgment, to be a competitor of the Company and provided further such assignee
agrees, prior to the transfer, in writing with the Company to comply with all
the provisions of this Agreement applicable to such Purchaser.

                        (iv)    This Agreement shall be binding upon and inure
to the benefit of the successors and permitted assigns of the parties. Any
assignment not in accordance with this Agreement shall be void.

                (e)     Expenses. The Company shall reimburse the Purchasers for
all reasonable legal, accounting and due diligence expenses incurred in
connection with this Agreement and the transactions contemplated hereby,
regardless of whether or not the Closing occurs.

                (f)     Counterparts. This Agreement may be executed in two or
more counterparts, each of which will be deemed an original, but all of which
together will constitute one and the same instrument.

                (g)     Entire Agreement. This Agreement, the Voting Agreement
and the Rights Agreement, together with the Exhibits and other documents
attached hereto and thereto, constitute the entire contract between the parties
with respect to the subject matter hereof and thereof, and no party will be
liable or bound to the other in any manner by any representations, warranties or
covenants except as specifically set forth herein and therein.

                (h)     Titles. The titles of the Sections of this Agreement are
inserted for reference only, and are not to be considered as part of this
Agreement in construing this Agreement.

                (i)     Termination. This Agreement may be terminated and the
transactions contemplated hereby may be abandoned, at any time prior to the
Closing, whether before or after approval of the sale of Shares by the
stockholders of the Company:

                (i)     by mutual consent of the Company and of a majority in
interest of Purchasers as set forth on Schedule A;




                                      -35-
<PAGE>   40

                        (ii)    by either a majority in interest of Purchasers
as set forth on Schedule A or the Company, if the Closing shall not have
occurred by October 31, 1999 (unless the failure to consummate the sale of
Shares is attributable to a failure on the part of the party seeking to
terminate this Agreement to perform any material obligation required to be
performed by such party at or prior to the Closing);

                        (iii)   by a majority in interest of Purchasers as set
forth on Schedule A, if the required approval of the Company's stockholders
shall not have been obtained by reason of the failure to obtain the required
vote at a duly held meeting of stockholders or at any adjournment thereof;

                        (iv)    by either a majority in interest of Purchasers
as set forth on Schedule A or the Company, if there shall be any law or
regulation of any Governmental Entity that makes consummation of the purchase of
the Shares illegal or otherwise prohibited or if any judgment, injunction, order
or decree of any governmental entity prohibiting such transaction is entered and
such judgment, injunction, order or decree shall have become final and
nonappealable;

                        (v)     by a majority in interest of Purchasers as set
forth on Schedule A, if there has been a breach of any covenant or a breach of
any representation or warranty on the part of the Company, such that the closing
conditions set forth in Section 9 would not be satisfied or if the Company has
not secured interim financing as specified in Section 9(xvi) by May 21, 1999.

                (j)     Effect of Termination. In the event of the termination
of this Agreement pursuant to Section 10(i) hereof by the Company, or a majority
in interest of Purchasers, written notice thereof shall forthwith be given to
the other party or parties specifying the provision hereof pursuant to which
such termination is made, and this Agreement shall become void and have no
effect, and there shall be no liability hereunder on the part of Purchasers.
Nothing in this Section 10(j) shall relieve any party to this Agreement of
liability for breach of this Agreement or for representations which were
incorrect when made.



                                      -36-
<PAGE>   41

        IN WITNESS WHEREOF, the parties have duly executed this Agreement as of
the day and year first set forth above.

"COMPANY"

CARDIAC PATHWAYS CORPORATION

By: /s/ William N. Starling
   -------------------------------------
William N. Starling
President and Chief Executive Officer


"PURCHASERS"


BANKAMERICA VENTURES


By: /s/ Anchie Y. Kuo
   -------------------------------------


Title:  Managing Director
      ----------------------------------


MORGAN STANLEY VENTURE PARTNERS III, L.P.

By: Morgan Stanley Venture Partners III, L.L.C.
     its General Partner
By: Morgan Stanley Venture Capital III, Inc.,
     its Institutional Managing Member

By: /s/ Fazle Husain
   -------------------------------------
Name:     Fazle Husain
Title:    General Partner
Address:  1221 Avenue of the Americas
          New York, New York  10020
<PAGE>   42


MORGAN STANLEY VENTURE INVESTORS III, L.P.

By: Morgan Stanley Venture Partners III, L.L.C.
     its General Partner
By: Morgan Stanley Venture Capital III, Inc.,
     its Institutional Managing Member

By: /s/ Fazle Husain
   -------------------------------------
Name:     Fazle Husain
Title:    General Partner
Address:  1221 Avenue of the Americas
          New York, New York  10020


MORGAN STANLEY VENTURE PARTNERS
 ENTREPRENEUR FUND, L.P.

By: Morgan Stanley Venture Partners III, L.L.C.
     its General Partner
By: Morgan Stanley Venture Capital III, Inc.,
     its Institutional Managing Member

By: /s/ Fazle Husain
   -------------------------------------
Name:     Fazle Husain
Title:    General Partner
Address:  1221 Avenue of the Americas
          New York, New York  10020


VAN WAGONER CAPITAL MANAGEMENT

By: /s/ Garreat Van Wagoner
   -------------------------------------
Name:   Garreat Van Wagoner
Title:  President
Address:


<PAGE>   43

STATE OF WISCONSIN INVESTMENT BOARD

By: /s/ John Nelson
   -------------------------------------
Name:   John Nelson
Title:  Investment Director
Address:


/s/ Thomas Fogarty
- ----------------------------------------
THOMAS FOGARTY







<PAGE>   44

                                   SCHEDULE A

                             SCHEDULE OF PURCHASERS





<TABLE>
<CAPTION>
                                                                    Number of
                              Purchasers                              Shares
        -------------------------------------------------------------------------
<S>                                                                        <C>
        BankAmerica Ventures                                               10,000

        Morgan Stanley Venture Partners III, L.P.                           8,773

        Morgan Stanley Venture Investors III, L.P.                            842

        Morgan Stanley Venture Partners Entrepreneurs Fund,                   385
        L.P.

        Van Wagoner Capital Management                                      5,000

        State of Wisconsin Investment Board                                 6,000

        Thomas Fogarty                                                        500
</TABLE>




<PAGE>   45


                                    EXHIBIT A

                           CERTIFICATE OF DESIGNATION



<PAGE>   46




                                    EXHIBIT B

                               DISCLOSURE SCHEDULE



<PAGE>   47




                                    EXHIBIT C

                          REGISTRATION RIGHTS AGREEMENT



<PAGE>   48




                                    EXHIBIT D

                                VOTING AGREEMENT




<PAGE>   1

                                                                       EXHIBIT 7

                                VOTING AGREEMENT


        This Voting Agreement ("AGREEMENT") is made and entered into as of May
11, 1999 between Cardiac Pathways Corporation, a Delaware corporation
("COMPANY"), and the undersigned stockholder ("STOCKHOLDER") of the Company, a
Delaware corporation.

                                    RECITALS

        A.      Concurrently with the execution of this Agreement, the Company
and BankAmerica Ventures ("BAV") have entered into a Series B Convertible
Preferred Stock Purchase Agreement of even date herewith (the "PURCHASE
AGREEMENT") which provides for the purchase of the Company's Series B
Convertible Preferred Stock (the "FINANCING").

        B.      The Stockholder is the record holder and beneficial owner (as
defined in Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the
"EXCHANGE ACT")) of such number of shares of the outstanding Common Stock of the
Company as is indicated on the final page of this Agreement.

        C.      Company desires the Stockholder to agree, and the Stockholder is
willing to agree to vote the Shares and any other such shares of capital stock
of the Company so as to facilitate consummation of the Financing.

        NOW, THEREFORE, in consideration of the covenants, promises and
representations set forth herein, the parties agree as follows:

        1.      Certain Definitions

                For purposes of this Voting Agreement:

                (a)     "ACQUISITION PROPOSAL" shall mean any offer, proposal or
inquiry contemplating or otherwise relating to any Acquisition Transaction.

                (b)     "ACQUISITION TRANSACTION" shall mean any transaction
(other than as contemplated by the Purchase Agreement) involving:

                        (1)     any merger, consolidation, amalgamation, share
exchange, business combination, issuance of securities, acquisition of
securities, tender offer, exchange offer or other similar transaction (i) in
which the Company is a constituent company, (ii) in which a person or "group"
(as defined in the Exchange Act of 1934, as amended and the rules promulgated
thereunder) of persons directly or indirectly acquires the Company or more than
20% of the Company's business or directly or indirectly acquires beneficial or
record ownership of securities representing, or exchangeable for or convertible
into, more than 20% of the outstanding securities of any class of



<PAGE>   2

voting securities of the Company, or (iii) in which the Company issues
securities representing more than 20% of the outstanding securities of any class
of voting securities of the Company;

                        (2)     any sale, lease, exchange, transfer, license,
acquisition or disposition of more than 20% of the assets of the Company; or

                        (3)     any liquidation or dissolution of the Company.

                (c)     "COMPANY COMMON STOCK" shall mean the common stock, par
value $.__ per share, of the Company.

                (d)     "EXPIRATION DATE" shall mean the earlier of (i) the date
upon which the Purchase Agreement is validly terminated, or (ii) the date upon
which the closing (as defined in the Purchase Agreement, hereinafter, the
"Closing") occurs.

                (e)     Stockholder shall be deemed to "OWN" or to have acquired
"OWNERSHIP" of a security if Stockholder: (i) is the record owner of such
security; or (ii) is the "beneficial owner" (within the meaning of Rule 13d-3
under the Securities Exchange Act of 1934) of such security.

                (f)     "PERSON" shall mean any (i) individual, (ii)
corporation, limited liability company, partnership or other entity, or (iii)
governmental authority.

                (g)     "REPRESENTATIVES" shall mean officers, directors,
employees, agents, attorneys, accountants, advisors and representatives.

                (h)     "SHARES" shall mean: (i) all securities of the Company
(including all shares of Company Common Stock and all options, warrants and
other rights to acquire shares of Company Common Stock) Owned by Stockholder as
of the date of this Agreement; and (ii) all additional securities of the Company
(including all additional shares of Company Common Stock and all additional
options, warrants and other rights to acquire shares of Company Common Stock) of
which Stockholder acquires Ownership during the period from the date of this
Agreement through the Expiration Date.

                (i)     A Person shall be deemed to have a effected a "TRANSFER"
of a security if such Person directly or indirectly: (i) sells, pledges,
encumbers, grants an option with respect to, transfers or disposes of such
security or any interest in such security; or (ii) enters into an agreement or
commitment contemplating the possible sale of, pledge of, encumbrance of, grant
of an option with respect to, transfer of or disposition of such security or any
interest therein.

                2.      Agreement to Vote Shares. From the date of this
Agreement to the Expiration Date, at every meeting of the stockholders of the
Company called with respect to any of the following, and at every adjournment
thereof, and on every action or approval by written consent of the Stockholders
of the Company with respect to any of the following, Stockholder shall vote the
Shares: (i) in favor of approval of the Purchase Agreement and the Financing and
any matter that could reasonably be expected to facilitate the Financing; and
(ii) against (a) approval of any proposal



<PAGE>   3

made in opposition to or competition with consummation of the Financing; (b) any
liquidation or winding up of the Company; and (c) any action that would make
consummation of the financing unfeasible (each of the foregoing is hereinafter
referred to as an "OPPOSING PROPOSAL"). Stockholder agrees not to take any
actions contrary to Stockholder's obligations under this Agreement.

        3.      Irrevocable Proxy. Contemporaneously with the execution of this
Voting Agreement: (i) Stockholder shall deliver to the Company a proxy in the
form attached to this Voting Agreement as EXHIBIT A, which shall be irrevocable
to the fullest extent permitted by law, with respect to the shares referred to
therein (the "PROXY"); and (ii) Stockholder shall cause to be delivered to the
Company an additional proxy (in the form attached hereto as Exhibit A) executed
on behalf of the record owner of any outstanding shares of Company Common Stock
that are owned beneficially (within the meaning of Rule 13d-3 under the
Securities Exchange Act of 1934), but not of record, by Stockholder.

        4.      Transfer of Shares.

                4.1     Transferee of Shares to be Bound by this Agreement.
Stockholder agrees that, during the period from the date of this Voting
Agreement through the Expiration Date, Stockholder shall not cause or permit any
Transfer of any of the Shares to be effected unless each Person to which any of
such Shares, or any interest in any of such Shares, is or may be transferred
shall have: (a) executed a counterpart of this Voting Agreement and a proxy in
the form attached hereto as Exhibit A; and (b) agreed to hold such Shares (or
interest in such Shares) subject to all of the terms and provisions of this
Voting Agreement.

                4.2     Transfer of Voting Rights. Stockholder agrees that,
during the period from the date of this Voting Agreement through the Expiration
Date, Stockholder shall ensure that: (a) none of the Shares is deposited into a
voting trust; and (b) no proxy is granted, and no voting agreement or similar
agreement is entered into, with respect to any of the Shares.

        5.      No Solicitation. Stockholder agrees that, during the period from
the date of this Voting Agreement through the Expiration Date, Stockholder shall
not, directly or indirectly, and Stockholder shall ensure that his
Representatives do not, directly or indirectly: (i) solicit, initiate, encourage
or induce the making, submission or announcement of any Acquisition or take any
action that could reasonably be expected to lead to an Acquisition Proposal;
(ii) furnish any information regarding the Company or any direct or indirect
subsidiary of the Company to any Person in connection with or in response to an
Acquisition Proposal or potential Acquisition Proposal; or (iii) engage in
discussions with any Person with respect to any Acquisition Proposal.
Stockholder shall immediately cease and discontinue, and Stockholder shall
ensure that his Representatives immediately cease and discontinue, any existing
discussions with any Person that relate to any Acquisition Proposal.

        6.      Representations, Warranties and Covenants of the Stockholder.
Stockholder hereby represents, warrants and covenants to Parent as follows:



<PAGE>   4

                6.1     Ownership of Shares. Stockholder (i) is the beneficial
owner of the Shares, which at the date hereof and at all times up until the
Expiration Date will be free and clear of any liens, claims, options, charges or
other encumbrances; (ii) does not beneficially own any shares of capital stock
of the Company other than the Shares (excluding shares as to which Stockholder
currently disclaims beneficial ownership in accordance with applicable law); and
(iii) has full power and authority to make, enter into and carry out the terms
of this Agreement and the Proxy. This Voting Agreement and the Proxy have been
duly executed and delivered by Stockholder and constitute legal, valid and
binding obligations of Stockholder, enforceable against Stockholder in
accordance with their terms, subject to (i) laws of general application relating
to bankruptcy, insolvency and the relief of debtors, and (ii) rules of law
governing specific performance, injunctive relief and other equitable remedies.

                6.2     No Conflicts of Consents.

                        (a)     The execution and delivery of this Voting
Agreement and the Proxy by Stockholder do not, and the performance of this
Voting Agreement and the Proxy by Stockholder will not: (i) conflict with or
violate any law, rule, regulation, order, decree or judgment applicable to
Stockholder or by which he or any of his properties is or may be bound or
affected; or (ii) result in or constitute (with or without notice or lapse of
time) any breach of or default under, or give to any other Person (with or
without notice or lapse of time) any right of termination, amendment,
acceleration or cancellation of, or result (with or without notice or lapse of
time) in the creation of any encumbrance or restriction on any of the Shares
pursuant to, any contract to which Stockholder is a party or by which
Stockholder or any of his affiliates or properties is or may be bound or
affected.

                        (b)     The execution and delivery of this Voting
Agreement and the Proxy by Stockholder do not, and the performance of this
Voting Agreement and the Proxy by Stockholder will not, require any consent or
approval of any Person.

                6.3     Accuracy of Representations. The representations and
warranties contained in this Voting Agreement are accurate in all respects as of
the date of this Voting Agreement, will be accurate in all respects at all times
through the Expiration Date and will be accurate in all respects as of the date
of the Closing as if made on that date.

                6.4     No Proxy Solicitations. Stockholder will not, and will
not permit any entity under Stockholder's control to: (i) solicit proxies or
become a "participant" in a "solicitation" (as such terms are defined in
Regulation 14A under the Exchange Act) with respect to an Opposing Proposal or
otherwise encourage or assist any party in taking or planning any action that
would compete with, restrain or otherwise serve to interfere with or inhibit the
timely consummation of the Financing; (ii) initiate a Stockholders' vote or
action by written consent of the Company Stockholders with respect to an
Opposing Proposal; or (iii) become a member of a "group" (as such term is used
in Section 13(d) of the Exchange Act) with respect to any voting securities of
the Company with respect to an Opposing Proposal.



<PAGE>   5

        7.      Additional Documents. Stockholder hereby covenants and agrees to
execute and deliver any additional documents necessary or desirable, in the
reasonable opinion of Parent and Stockholder, as the case may be, to carry out
the intent of this Agreement.

        8.      Termination. This Agreement and the Proxy delivered in
connection herewith shall terminate and shall have no further force or effect as
of the Closing Date of the Financing (as defined in the Purchase Agreement.

        9.      Legend. Immediately after the execution of this Voting Agreement
(and from time to time upon the acquisition by Stockholder of Ownership of any
shares of Company Common Stock prior to the Expiration Date), Stockholder shall
ensure that each certificate evidencing any outstanding shares of Company Common
Stock or other securities of the Company Owned by Stockholder bears a legend in
the following form:

THE SECURITY OR SECURITIES REPRESENTED BY THIS CERTIFICATE MAY NOT BE SOLD,
EXCHANGED OR OTHERWISE TRANSFERRED OR DISPOSED OF EXCEPT IN COMPLIANCE WITH THE
TERMS AND PROVISIONS OF THE VOTING AGREEMENT DATED AS OF MAY 12, 1999 BETWEEN
THE ISSUER AND THE STOCKHOLDER, AS IT MAY BE AMENDED, A COPY OF WHICH IS ON FILE
AT THE PRINCIPAL EXECUTIVE OFFICES OF THE ISSUER.

        10.     Miscellaneous.

                10.1    Severability. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction to be
invalid, void or unenforceable, then the remainder of the terms, provisions,
covenants and restrictions of this Agreement shall remain in full force and
effect and shall in no way be affected, impaired or invalidated.

                10.2    Binding Effect and Assignment. This Agreement and all of
the provisions hereof shall be binding upon and inure to the benefit of the
parties hereto and their respective successors and permitted assigns, but,
except as otherwise specifically provided herein, either this Agreement nor any
of the rights, interests or obligations of the parties hereto may be assigned by
either of the parties without prior written consent of the other. Without
limiting any of the restrictions set forth in Section 4 or elsewhere in this
Voting Agreement, this Voting Agreement shall be binding upon any Person to whom
any Shares are transferred. Nothing in this Voting Agreement is intended to
confer on any Person (other than the Company and its successors and assigns) any
rights or remedies of any nature.

                10.3    Amendments and Modification. This Agreement may not be
modified, amended, altered or supplemented except upon the execution and
delivery of a written agreement executed by the parties hereto.

                10.4    Specific Performance; Injunctive Relief. The parties
hereto acknowledge that Parent will be irreparably harmed and that there will be
no adequate remedy at law for a violation of any of the covenants or agreements
of Stockholder set forth herein. Therefore, it is agreed that, in



<PAGE>   6

addition to any other remedies that may be available to Parent upon any such
violation, Parent shall have the right to enforce such covenants and agreements
by specific performance, injunctive relief or by any other means available to
Parent at law or in equity.

                10.5    Notices. All notices, requests, claims, demands and
other communications hereunder shall be in writing and sufficient if delivered
in person, by cable, telegram or telex, facsimile, or sent by mail (registered
or certified mail, postage prepaid, return receipt requested) or overnight
courier (prepaid) to the respective parties as follows:

                If to the Company to:

                             Cardiac Pathways Corporation
                             995 Benecia Avenue
                             Sunnyvale, California 94086
                             Telephone:   (408) 737-0505
                             Facsimile:   (408) 737-1700

                             Attention: G. Michael Latta,
                                        Chief Financial Officer

                             with a copy to:

                             Wilson Sonsini Goodrich & Rosati
                             650 Page Mill Road
                             Palo Alto, CA 94304-1050
                             Telephone:   (650) 493-9300
                             Facsimile:   (650) 845-5000

                             Attention:   Chris F. Fennell, Esq.


                If to the Stockholder: At the address provided on Signature Page

                or to such other address or facsimile numbers as any party may
have furnished to the other in writing in accordance herewith, except that
notices of change of address or facsimile number shall only be effective upon
receipt.

                10.6    Governing Law; Venue.

                        (a)     This Agreement shall be governed by, and
construed and enforced in accordance with, the internal laws of the State of
California.

                        (b)     Any legal action or other legal proceeding
relating to this Voting Agreement or the Proxy or the enforcement of any
provision of this Voting Agreement or the Proxy may be brought or otherwise
commenced in any state or federal court located in the County of Santa Clara,
California. Stockholder:



<PAGE>   7

                                (i)     expressly and irrevocably consents and
submits to the jurisdiction of each state and federal court located in the
County of Santa Clara, California (and each appellate court located in the State
of California), in connection with any such legal proceeding;

                                (ii)    agrees that service of any process,
summons, notice or document by U.S. mail addressed to him at the address set
forth on the signature page attached hereto shall constitute effective service
of such process, summons, notice or document for purposes of any such legal
proceeding;

                                (iii)   agrees that each state and federal court
located in the County of Santa Clara, California, shall be deemed to be a
convenient forum; and

                                (iv)    agrees not to assert (by way of motion,
as a defense or otherwise), in any such legal proceeding commenced in any state
or federal court located in the County of Santa Clara, California, any claim
that Stockholder is not subject personally to the jurisdiction of such court,
that such legal proceeding has been brought in an inconvenient forum, that the
venue of such proceeding is improper or that this Voting Agreement or the
subject matter of this Voting Agreement may not be enforced in or by such court.

Nothing contained in this Section 10.6 shall be deemed to limit or otherwise
affect the right of the Company to commence any legal proceeding or otherwise
proceed against Stockholder in any other forum or jurisdiction.

                        (c)     STOCKHOLDER IRREVOCABLY WAIVES THE RIGHT TO A
JURY TRIAL IN CONNECTION WITH ANY LEGAL PROCEEDING RELATING TO THIS VOTING
AGREEMENT OR THE PROXY OR THE ENFORCEMENT OF ANY PROVISION OF THIS VOTING
AGREEMENT OR THE PROXY.

                10.7    Entire Agreement. This Agreement contains the entire
understanding of the parties in respect of the subject matter hereof, and
supersedes all prior negotiations and understandings between the parties with
respect to such subject matter.

                10.8    Counterparts. This Agreement may be executed in several
counterparts, each of which shall be an original, but all of which together
shall constitute one and the same agreement.

                10.9    Effect of Headings. The section headings herein are for
convenience only and shall not affect the construction of interpretation of this
Agreement.

                10.10   Attorneys' Fees. If any legal action or other legal
proceeding relating to this Voting Agreement or the enforcement of any provision
of this Voting Agreement is brought against Stockholder, the prevailing party
shall be entitled to recover reasonable attorneys' fees, costs and disbursements
(in addition to any other relief to which the prevailing party may be entitled).

                10.11   Waiver. No failure on the part of the Company to
exercise any power, right, privilege or remedy under this Voting Agreement, and
no delay on the part of the Company in



<PAGE>   8

exercising any power, right, privilege or remedy under this Voting Agreement,
shall operate as a waiver of such power, right, privilege or remedy; and no
single or partial exercise of any such power, right, privilege or remedy shall
preclude any other or further exercise thereof or of any other power, right,
privilege or remedy. The Company shall not be deemed to have waived any claim
available to the Company arising out of this Voting Agreement, or any power,
right, privilege or remedy of the Company under this Voting Agreement, unless
the waiver of such claim, power, right, privilege or remedy is expressly set
forth in a written instrument duly executed and delivered on behalf of the
Company; and any such waiver shall not be applicable or have any effect except
in the specific instance in which it is given.

        IN WITNESS WHEREOF, the parties have caused this Voting Agreement to be
duly executed on the date and year first above written.


                                        CARDIAC PATHWAYS CORPORATION


                                        By:
                                           -------------------------------------
                                        Name:  William Starling
                                        Title: President and Chief Executive
                                               Officer


                                        STOCKHOLDER


                                        ----------------------------------------
                                        Name:

                                        Stockholder's Address for Notice:


                                        ----------------------------------------

                                        ----------------------------------------

                                        ----------------------------------------
                                                    Facsimile Number:

                                        Shares beneficially owned:

                                        _________________ shares of Common Stock




                    ***SIGNATURE PAGE FOR VOTING AGREEMENT***


<PAGE>   9

                                    EXHIBIT A

                                IRREVOCABLE PROXY

        The undersigned Stockholder of Cardiac Pathways Corporation, a Delaware
corporation ("COMPANY"), hereby irrevocably appoints the William Starling and G.
Michael Latta, and each of them, as the sole and exclusive attorneys and proxies
of the undersigned, with full power of substitution and resubstitution, to the
full extent of the undersigned's rights with respect to (i) the shares of
capital stock of Company beneficially owned by the undersigned, which shares are
listed on the final page of this Proxy, (ii) any and all other shares or
securities issued or issuable in respect thereof on or after the date hereof,
and (iii) any and all other shares of capital stock of the Company which the
undersigned may acquire on or after the date hereof, until such time as that
certain Series B Convertible Preferred Stock Purchase Agreement (the "PURCHASE
AGREEMENT"), among the Company and BankAmerica Ventures ("BAV"), which provides
for the purchase of the Company's Series B Convertible Preferred Stock (the
"FINANCING"), shall be terminated in accordance with its terms or the Closing
(as defined in the Purchase Agreement) occurs (the "EXPIRATION DATE"). (The
shares of capital stock of Company referred to in clauses (i), (ii) and (iii)
above are collectively referred to as the "Shares"). Upon the execution hereof,
all prior proxies given by the undersigned with respect to the Shares are hereby
revoked and no subsequent proxies will be given.

        This Proxy is irrevocable, is coupled with an interest, is granted
pursuant to the Voting Agreement dated as of May 11, 1999 between Company and
the undersigned Stockholder (the "VOTING AGREEMENT"), and is granted in
consideration of BAV entering into the Purchase Agreement. The attorneys and
proxies named above will be empowered at any time prior to the Expiration Date
to exercise all voting and other rights (including, without limitation, the
power to execute and deliver written consents with respect to the Shares) of the
undersigned at every annual, special or adjourned meeting of Company
stockholders, and in every written consent in lieu of such a meeting, or
otherwise, (i) in favor of approval of the Purchase Agreement and the Financing
and any matter that could reasonably be expected to facilitate the Financing,
and (ii) against (a) approval of any proposal made in opposition to or
competition with the consummation of the Financing, (b) any liquidation or
winding up of the Company and (c) any action that would make the consummation of
the Financing unfeasible.

        The attorneys and proxies named above may only exercise this Proxy to
vote the Shares subject hereto at any time prior to the Expiration Date at every
annual, special or adjourned meeting of the Stockholders of Company and in every
written consent in lieu of such meeting or otherwise, (i) in favor of approval
of the Purchase Agreement and the Financing and any matter that could reasonably
be expected to facilitate the Financing, and (ii) against (a) approval of any
proposal made in opposition to or competition with consummation of the
Financing, (b) any liquidation or winding up of the Company, and (c) any action
that would make the consummation of the Financing unfeasible, and may not
exercise this Proxy on any other matter. The undersigned Stockholder may vote
the Shares on all other matters.



<PAGE>   10

        Any obligation of the undersigned hereunder shall be binding upon the
heirs, estates, executors, personal representatives, successors and assigns of
the undersigned (including any transferee of any shares).

        This Proxy is irrevocable.

        If any provision of this proxy or any part of any such provision is held
under any circumstances to be invalid or unenforceable in any jurisdiction, then
(a) such provision or part thereof shall, with respect to such circumstances and
in such jurisdiction, be deemed amended to conform to applicable laws so as to
be valid and enforceable to the fullest possible extent, (b) the invalidity or
unenforceability of such provision or part thereof under such circumstances and
in such jurisdiction shall not affect the validity or enforceability of such
provision or part thereof under any other circumstances or in any other
jurisdiction, and (c) the invalidity or unenforceability of such provision or
part thereof shall not affect the validity or enforceability of the remainder of
such provision or the validity or enforceability of any other provision of this
proxy. Each provision of this proxy is separable from every other provision of
this proxy, and each part of each provision of this proxy is separable from
every other part of such provision.

        This proxy shall terminate upon the earlier of the valid termination of
the Purchase Agreement or the closing of the Financing.


                Dated: May 11, 1999


        Signature of Stockholder:
                                 -----------------------------------------------

        Print Name of Stockholder:
                                 -----------------------------------------------

        Shares beneficially owned:________________________shares of Common Stock





***PROXY***



<PAGE>   1

                                                                       EXHIBIT 8

                CERTIFICATE OF DESIGNATION OF RIGHTS, PREFERENCES
                                AND PRIVILEGES OF
                      SERIES B CONVERTIBLE PREFERRED STOCK
                         OF CARDIAC PATHWAYS CORPORATION



        The undersigned, William N. Starling and Chris F. Fennell do hereby
certify:

        1.      That they are the duly elected and acting President and
Secretary, respectively, of Cardiac Pathways Corporation, a Delaware corporation
(the "CORPORATION").

        2.      That pursuant to the authority conferred upon the Board of
Directors by the Restated Certificate of Incorporation of the said Corporation,
the said Board of Directors on May 16, 1999 adopted the following resolution
creating a series of 50,000 shares of Preferred Stock designated as Series B
Convertible Preferred Stock:

        "RESOLVED, that pursuant to the authority vested in the Board of
Directors of the corporation by the Restated Certificate of Incorporation, the
Board of Directors does hereby provide for the issue of a series of Preferred
Stock of the Corporation and does hereby fix and herein state and express the
designations, powers, preferences and relative and other special rights and the
qualifications, limitations and restrictions of such series of Preferred Stock
as follows:

        1.      Designation and Amount. The shares of such series shall be
designated as "SERIES B CONVERTIBLE PREFERRED STOCK." The Series B Convertible
Preferred Stock shall have a par value of $.001 per share, and the number of
shares constituting such series shall be 50,000.

        2.      Proportional Adjustment. In the event the Corporation shall at
any time after the issuance of any share or shares of Series B Convertible
Preferred Stock (i) declare any dividend on the Common Stock of the Corporation
("COMMON STOCK") payable in shares of Common Stock, (ii) subdivide the
outstanding Common Stock or (iii) combine the outstanding Common Stock into a
smaller number of shares, then in each such case the Corporation shall
simultaneously effect a proportional adjustment to the number of outstanding
shares of Series B Convertible Preferred Stock.

        3.      Dividends and Distributions.

                (a)     Subject to the prior and superior right of the holders
of any shares of any series of Preferred Stock ranking prior and superior to the
shares of Series B Convertible Preferred Stock with respect to dividends, the
holders of shares of Series B Convertible Preferred Stock shall be entitled to
receive when, as and if declared by the Board of Directors out of funds legally
available for the purpose, cumulative dividends payable in cash, in an amount
per share (rounded to



<PAGE>   2

the nearest cent) equal to 11% of the original Series B Convertible Preferred
Stock Purchase price, per annum.

                (b)     Dividend Rate Adjustment if Company Redemption Does Not
Occur. If, upon the request of the holders of a majority of the then outstanding
shares of Series B Convertible Preferred Stock, the Company does not redeem the
Series B Convertible Preferred Stock pursuant to Section 7 hereof, the
cumulative dividend payable on the Series B Convertible Preferred Stock shall be
subject to adjustment as follows:

                        (i)     If this corporation has not conducted a Company
Redemption prior to May 31, 2004, at the beginning of each year after such date
in which a Company Redemption does not occur the dividend rate for the Series B
Convertible Preferred Stock shall forthwith be increased by six percentage
points.

                (c)     The holder of Series B Convertible Preferred Stock shall
also be entitled to participate pro rata in any dividends paid on the Common
Stock on an as-converted basis.

        4.      Voting Rights. The holders of shares of Series B Convertible
Preferred Stock shall have the following voting rights:

                (a)     Each share of Series B Convertible Preferred Stock shall
entitle the holder thereof to that number of votes on all matters submitted to a
vote of the stockholders of the Corporation equal to the number of shares of
Common Stock into which the Series B Convertible Preferred Stock can be
converted.

                (b)     Except as otherwise provided herein or by law, the
holders of shares of Series B Convertible Preferred Stock and the holders of
shares of Common Stock shall vote together as one class on all matters submitted
to a vote of stockholders of the Corporation.

                (c)     Except as otherwise provided herein or by law, holders
of Series B Convertible Preferred Stock shall have no special voting rights and
their consent shall not be required (except to the extent they are entitled to
vote with holders of Common Stock as set forth herein) for taking any corporate
action.

        5.      Reacquired Shares. Any shares of Series B Convertible Preferred
Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their cancellation become authorized but unissued
shares of Preferred Stock and may be reissued as part of a new series of
Preferred Stock to be created by resolution or resolutions of the Board of
Directors, subject to the conditions and restrictions on issuance set forth
herein and, in the Restated Certificate of Incorporation, as then amended.

        6.      Liquidation, Dissolution or Winding Up.

                (a)     Upon any liquidation, dissolution or winding up of the
Corporation, either voluntary or involuntary, the holders of Series B
Convertible Preferred Stock shall be entitled to




                                     - 2 -
<PAGE>   3

receive, prior and in preference to any distribution of any assets to the
holders of Series A Participating Preferred Stock or Common Stock or any other
class of capital stock of the corporation by reason of their ownership thereof,
an amount per share equal to the sum of (i) the price originally paid for each
outstanding share of Series B Convertible Preferred Stock (the "ORIGINAL SERIES
B ISSUE PRICE") and (ii) an amount equal to accrued but unpaid dividends on such
shares. If upon the occurrence of such event, the assets and funds thus
distributed among the holders of the Series B Convertible Preferred Stock shall
be insufficient to permit the payment to such holders of the full aforesaid
preferential amounts, then the entire assets and funds of this corporation
legally available for distribution shall be distributed ratably among the
holders of the Series B Convertible Preferred Stock in proportion to the
preferential amount each such holder is otherwise entitled to receive.

                (b)     Upon the completion of the distribution required by
subparagraph (a) of this Section 6, the holders of Series A Participating
Preferred Stock shall be entitled to receive, an aggregate amount per share
equal to 1000 times the aggregate amount to be distributed per share to holders
of shares of Common Stock plus an amount equal to any accrued and unpaid
dividends on such shares of Series A Participating Preferred Stock.

                (c)     Upon the completion of the distribution required by
subparagraphs (a) and (b) of this Section 6, the remaining assets of this
corporation available for distribution to stockholders shall be distributed
among the holders of Common Stock and the Series B Convertible Preferred Stock,
pro rata based on the number of shares of Common Stock (on an as-converted
basis) held by each.

                (d)     For purposes of this Section 6, a liquidation,
dissolution or winding up of this corporation shall be deemed to be occasioned
by, or to include, (A) the acquisition of this corporation by another entity by
means of any transaction or series of related transactions (including, without
limitation, any reorganization, merger or consolidation) that results in the
transfer of fifty percent (50%) or more of the outstanding voting power of this
corporation; (B) a sale of all or substantially all of the assets of this
corporation, or (C) a sale or any transaction or series of transactions that
result in a sale or transfer of 50% or more of the outstanding voting power of
the corporation.

                        (i)     In any of such events, if the consideration
received by this corporation is other than cash, the value of such consideration
will be deemed its fair market value. Any securities shall be valued as follows:

                                (1)     Securities not subject to investment
letter or other similar restrictions on free marketability covered by (B) below:

                                        a)      If traded on a securities
exchange or through the Nasdaq National Market, the value shall be deemed to be
the average of the closing prices of the securities on such quotation system
over the thirty (30) day period ending three (3) days prior to the closing;




                                     - 3 -
<PAGE>   4

                                        b)      If actively traded
over-the-counter, the value shall be deemed to be the average of the closing bid
or sale prices (whichever is applicable) over the thirty (30) day period ending
three (3) days prior to the closing; and

                                        c)      If there is no active public
market, the value shall be the fair market value thereof, as mutually determined
by this Corporation and the holders of at least sixty-six and two-thirds percent
(66 2/3%) of the voting power of all then outstanding shares of Series B
Convertible Preferred Stock.

                                (2)     The method of valuation of securities
subject to investment letter or other restrictions on free marketability (other
than restrictions arising solely by virtue of a stockholder's status as an
affiliate or former affiliate) shall be to make an appropriate discount from the
market value determined as above in (1) (a), (b) or (c) to reflect the
approximate fair market value thereof, as mutually determined by this
corporation and the holders of at least sixty-six and two-thirds percent (66
2/3%) of the voting power of all then outstanding shares of Series B Convertible
Preferred Stock.

                                (3)     In the event the requirements of this
subsection 6(d) are not complied with, this corporation shall forthwith either:

                                        a)      cause such closing to be
postponed until such time as the requirements of this Section 6 have been
complied with; or

                                        b)      cancel such transaction, in
which event the rights, preferences and privileges of the holders of the Series
B Convertible Preferred Stock shall revert to and be the same as such rights,
preferences and privileges existing immediately prior to the date of the first
notice referred to in subsection 6(d)(4) hereof.

                                (4)     This Corporation shall give each holder
of record of Series B Convertible Preferred Stock written notice of such
impending transaction not later than twenty (20) days prior to the stockholders'
meeting called to approve such transaction, if any, or twenty (20) days prior to
the closing of such transaction, whichever is earlier, and shall also notify
such holders in writing of the final approval of such transaction. The first of
such notices shall describe the material terms and conditions of the impending
transaction and the provisions of this Section 6, and this Corporation shall
thereafter give such holders prompt notice of any material changes. The
transaction shall in no event take place sooner than twenty (20) days after this
Corporation has given the first notice provided for herein or sooner than ten
(10) days after this Corporation has given notice of any material changes
provided for herein; provided, however, that such periods may be shortened upon
the written consent of the holders of Series B Convertible Preferred Stock that
are entitled to such notice rights or similar notice rights and that represent
at least sixty-six and two-thirds percent (66 2/3%) of the voting power of all
then outstanding shares of such Series B Convertible Preferred Stock.

        7.      Redemption. The shares of Series B Convertible Preferred Stock
shall be redeemable.



                                     - 4 -
<PAGE>   5

                (a)     Optional Redemption. At any time after May 31, 2004, the
holders of a majority of the then outstanding shares of Series B Convertible
Preferred Stock, voting as a single class, may request that the Corporation
redeem the outstanding shares of Series B Convertible Preferred Stock. After
receiving such request, the Corporation, to the extent it then lawfully is able
to do so, and in its sole discretion, may redeem the outstanding shares of
Series B Convertible Preferred Stock (an "OPTIONAL REDEMPTION") in whole, upon
payment in cash in respect of each share redeemed of an amount equal to the
Original Series B Issue Price plus accrued but unpaid dividends on such shares.
Such amount is hereinafter referred to as the "REDEMPTION PRICE" of the Series B
Convertible Preferred Stock. Upon the election to conduct an Optional
Redemption, the Corporation shall promptly give written notice of the redemption
to each holder of record of Series B Convertible Preferred Stock, postage
prepaid at the post office address last shown on the records of the Corporation.

                (b)     Redemption Date. The Corporation shall redeem the shares
of Series B Convertible Preferred Stock to be redeemed hereunder in two equal
annual installments, commencing with the first calendar quarter ending ninety
(90) days after the date notice of redemption is provided to the holders of
Series B Convertible Preferred Stock. Such date shall be a "REDEMPTION DATE" for
the Preferred Stock as described herein.

                (c)     At least thirty (30) days prior to the Redemption Date
for the Series B Convertible Preferred Stock, written notice shall be mailed,
postage prepaid, to each holder of record of Series B Convertible Preferred
Stock to be redeemed, at such holder's post office address last shown on the
records of the Corporation, notifying such holder of the redemption of such
shares to be redeemed at that time, specifying the Redemption Date, the
Redemption Price, and calling upon such holder to surrender to the Corporation,
in the manner and at the place designated, such holder's certificate or
certificate's representing the shares to be redeemed (such notice is hereinafter
referred to as the "REDEMPTION NOTICE"). On or after the Redemption Date, each
holder of Series B Convertible Preferred Stock to be redeemed shall surrender
such holder's certificate or certificates representing shares to the
Corporation, in the manner and at the place designated in the Redemption Notice,
and thereupon the Redemption Price for such shares shall be payable to the order
of the person whose name appears on such certificate or certificates as the
owner of such shares and each surrendered certificates shall be canceled. In the
event less than all the shares represented by any such certificate are redeemed,
a new certificate shall be issued representing the unredeemed shares. From and
after the Redemption Date, unless there shall have been a default in payment of
the Redemption Price, all rights of the holders of Series B Convertible
Preferred Stock designated for redemption in the Redemption Notice as holders of
Series B Convertible Preferred Stock (except the right to receive the Redemption
Price without interest upon surrender of their certificate or certificates)
shall cease with respect to such shares, and such shares shall not subsequently
be transferred on the books of the Corporation or be deemed to be outstanding
for any purpose whatsoever.

                (d)     Insufficient Funds. If the funds of the Corporation
legally available for redemption of shares of Series B Convertible Preferred
Stock on any Redemption Date are insufficient to redeem the total number of
shares of Series B Convertible Preferred Stock to be redeemed on such date,
those funds that are legally available shall be used to redeem the maximum




                                     - 5 -
<PAGE>   6

possible number of such shares ratably among the holders of such shares to be
redeemed. The shares of Series B Convertible Preferred Stock not redeemed shall
remain outstanding and entitled to all the rights and preferences provided
herein. At any time thereafter when additional funds of the Corporation are
legally available for the redemption of shares of the Series B Convertible
Preferred Stock, such funds shall immediately be used to redeem the balance of
the shares which the Corporation has become obligated to redeem, or elected to
redeem, on any Redemption Date but which it has not redeemed.

                (e)     Deposit of Redemption Price. On or prior to the
Redemption Date, the Corporation shall deposit the Redemption Price of all
shares of Series B Convertible Preferred Stock designated for redemption in the
Redemption Notice and not yet redeemed with a bank or trust company having
aggregate capital and surplus in excess of $100,000,000 as a trust fund for the
benefit of the respective holders of the shares designated for the redemption
and not yet redeemed, with irrevocable instructions and authority to the bank or
trust company to pay the Redemption Price for such shares to their respective
holders on or after the Redemption Date, upon receipt of notification from the
Corporation that such holder has surrendered such holder's share certificate to
the Corporation pursuant to Section 7(c) above. Such instructions shall also
provide that any funds deposited by the Corporation pursuant to this Section
7(e) for the redemption of shares of subsequently converted into shares of
Common Stock no later than the fifth (5th) day preceding the Redemption Date
shall be returned to the Corporation forthwith upon such conversion. The balance
of any funds deposited by the Corporation pursuant to this Section 7(e)
remaining unclaimed at the expiration of two (2) years following the Redemption
Date shall be returned to the Corporation upon its request expressed in a
resolution of its Board of Directors.

        8.      Conversion. The holders of the Series B Convertible Preferred
Stock shall have conversion rights as follows (the "CONVERSION RIGHTS"):

                (a)     Right to Convert. Each share of Series B Convertible
Preferred Stock shall be convertible, at the option of the holder thereof, at
any time after the date of issuance of such share, at the office of this
Corporation or any transfer agent for such stock, into such number of fully paid
and nonassessable shares of Common Stock as is determined by dividing the
Original Series B Issue Price multiplied by 1000, by the Series B Conversion
Price, determined as hereafter provided, in effect on the date the certificate
is surrendered for conversion. The initial Series B Conversion Price per share
shall be the Original Series B Issue Price; provided, however, that the Series B
Conversion Price shall be subject to adjustment as set forth in Section 8(d) and
8(e)

                (b)     Automatic Conversion. Each share of Series B Convertible
Preferred Stock, shall automatically be converted into shares of Common Stock at
the Series B Conversion Price at the time in effect upon the election of a
majority of the holders of Series B Convertible Preferred Stock.

                (c)     Mechanics of Conversion. Before any holder of Series B
Convertible Preferred Stock shall be entitled to convert into shares of Common
Stock, he or she shall surrender the certificate or certificates therefor, duly
endorsed, at the office of this corporation or of any transfer agent for the
Series B Convertible Preferred Stock, and shall give written notice to this




                                     - 6 -
<PAGE>   7

Corporation at its principal corporate office of the election to convert the
same and shall state therein the name or names in which the certificate or
certificates for shares of Common Stock are to be issued. This Corporation
shall, as soon as practicable thereafter, issue and deliver at such office to
such holder of Series B Convertible Preferred Stock, or to the nominee or
nominees of such holder, a certificate or certificates for the number of shares
of Common Stock to which such holder shall be entitled as aforesaid. Such
conversion shall be deemed to have been made immediately prior to the close of
business on the date of such surrender of the shares of Series B Convertible
Preferred Stock to be converted, and the person or persons entitled to receive
the shares of Common Stock issuable upon such conversion shall be treated for
all purposes as the record holder or holders of such shares of Common Stock as
of such date. If the conversion is in connection with a sale to, or a merger
with, a third party, the conversion may, at the option of any holder tendering
Series B Convertible Preferred Stock for conversion, be conditioned upon the
closing of such sale to, or merger with, such third party (as the case may be),
in which event the person(s) entitled to receive the Common Stock upon
conversion of the Series B Convertible Preferred Stock shall not be deemed to
have converted such Series B Convertible Preferred Stock until immediately prior
to the closing of such sale or merger.

                (d)     Conversion Price Adjustments of Preferred Stock for
Certain Dilutive Issuance, Stock Splits and Combinations. The Conversion Price
of the Series B Convertible Preferred Stock shall be subject to adjustment from
time to time as follows:

                        (i)

                                (1)     If this corporation shall issue, after
the date upon which any shares of Series B Convertible Preferred Stock were
first issued (the "Purchase Date"), any Additional Stock (as defined below)
without consideration or for a consideration per share less than the Conversion
Price for the Series B Convertible Preferred Stock in effect immediately prior
to the issuance of such Additional Stock, the Conversion Price for the Series B
Convertible Preferred Stock in effect immediately prior to each such issuance
shall forthwith (except as otherwise provided in this clause (i)) be adjusted to
a price determined by multiplying such Conversion Price by a fraction, the
numerator of which shall be the number of shares of Common Stock outstanding
immediately prior to such issuance (including shares of Common Stock deemed to
be issued pursuant to Section 8(d)(i)(5)(a) or (b)) plus the number of shares of
Common Stock that the aggregate consideration received by this Corporation for
such issuance would purchase at such Conversion Price; and the denominator of
which shall be the number of shares of Common Stock outstanding immediately
prior to such issuance (including shares of Common Stock deemed to be issued
pursuant to Section 8(d)(i)(5)(a) or (b)) plus the number of shares of such
Additional Stock.

                                (2)     No adjustment of the Conversion Price
for the Series B Convertible Preferred Stock shall be made in an amount less
than one cent per share, provided that any adjustments that are not required to
be made by reason of this sentence shall be carried forward and shall be either
taken into account in any subsequent adjustment made prior to three (3) years
from the date of the event giving rise to the adjustment being carried forward,
or shall be made at the end of three (3) years from the date of the event giving
rise to the adjustment being carried forward. Except to the limited extent
provided for in Sections 8(d)(i)(5)(c) and (5)(d), no adjustment of such




                                     - 7 -
<PAGE>   8

Conversion Price of the Series B Convertible Preferred Stock pursuant to this
subsection 8(d)(i) shall have the effect of increasing the Conversion Price
above the Conversion Price in effect immediately prior to such adjustment.

                                (3)     In the case of the issuance of Common
Stock for cash, the consideration shall be deemed to be the amount of net cash
paid therefor (after deducting any reasonable discounts, commissions or other
expenses allowed, paid or incurred by this corporation for any underwriting or
otherwise in connection with the issuance and sale thereof).

                                (4)     In the case of the issuance of the
Common Stock for a consideration in whole or in part other than cash, the
consideration other than cash shall be deemed to be the fair value thereof as
determined in the reasonable good faith judgement of the Board of Directors
irrespective of any accounting treatment.

                                (5)     In the case of the issuance (whether
before, on or after the applicable Purchase Date) of options to purchase or
rights to subscribe for Common Stock, securities by their terms convertible into
or exchangeable for Common Stock or options to purchase or rights to subscribe
for such convertible or exchangeable securities, the following provisions shall
apply for all purposes of this Section 8(d)(i) and Section 8(d)(ii).

                                        a)      The aggregate maximum number of
shares of Common Stock deliverable upon exercise (assuming the satisfaction of
any conditions to exercisability, including without limitation, the passage of
time, but without taking into account potential antidilution adjustments) of
such options to purchase or rights to subscribe for Common Stock shall be deemed
to have been issued at the time such options or rights were issued and for a
consideration equal to the consideration (determined in the manner provided in
Sections 8(d)(i)(3) and (d)(i)(4)), if any, received by this Corporation upon
the issuance of such options or rights plus the minimum exercise price provided
in such options or rights (without taking into account potential antidilution
adjustments) for the Common Stock covered thereby.

                                        b)      The aggregate maximum number of
shares of Common Stock deliverable upon conversion of or in exchange (assuming
the satisfaction of any conditions to convertibility or exchangeability,
including, without limitation, the passage of time, but without taking into
account potential antidilution adjustments) for any such convertible or
exchangeable securities or upon the exercise of options to purchase or rights to
subscribe for such convertible or exchangeable securities and subsequent
conversion or exchange thereof shall be deemed to have been issued at the time
such securities were issued or such options or rights were issued and for a
consideration equal to the consideration, if any, received by this corporation
for any such securities and related options or rights (excluding any cash
received on account of accrued interest or accrued dividends), plus the minimum
additional consideration, if any, to be received by this corporation (without
taking into account potential antidilution adjustments) upon the conversion or
exchange of such securities or the exercise of any related options or rights
(the consideration in each case to be determined in the manner provided in
Sections 8(d)(i)(3) and (d)(i)(4)).

                                        c)      In the event of any change in
the number of shares of Common Stock deliverable or in the consideration payable
to this Corporation upon exercise of such




                                     - 8 -
<PAGE>   9

options or rights or upon conversion of or in exchange for such convertible or
exchangeable securities, including, but not limited to, a change resulting from
the antidilution provisions thereof (unless such options or rights or
convertible or exchangeable securities were merely deemed to be included in the
numerator and denominator for purposes of determining the number of shares of
Common Stock outstanding for purposes of subsection 8(d)(i)(1)), the Conversion
Price of the Series B Convertible Preferred Stock, to the extent in any way
affected by or computed using such options, rights or securities, shall be
recomputed to reflect such change, but no further adjustment shall be made for
the actual issuance of Common Stock or any payment of such consideration upon
the exercise of any such options or rights or the conversion or exchange of such
securities.

                                        d)      Upon the expiration of any such
options or rights, the termination of any such rights to convert or exchange or
the expiration of any options or rights related to such convertible or
exchangeable securities, the Conversion Price of the Series B Convertible
Preferred Stock, to the extent in any way affected by or computed using such
options, rights or securities or options or rights related to such securities
(unless such options or rights were merely deemed to be included in the
numerator and denominator for purposes of determining the number of shares of
Common Stock outstanding for purposes of Section 8(d)(i)(1)), shall be
recomputed to reflect the issuance of only the number of shares of Common Stock
(and convertible or exchangeable securities that remain in effect) actually
issued upon the exercise of such options or rights, upon the conversion or
exchange of such securities or upon the exercise of the options or rights
related to such securities.

                                        e)      The number of shares of Common
Stock deemed issued and the consideration deemed paid therefor pursuant to
Sections 8(d)(i)(5)(a) and (b) shall be appropriately adjusted to reflect any
change, termination or expiration of the type described in either Section
8(d)(i)(5)(c) or (d).

                        (ii)    "ADDITIONAL STOCK" shall mean any shares of
Common Stock issued (or deemed to have been issued pursuant to Section
8(d)(i)(5)) by this corporation after the Purchase Date other than:

                                (1)     Common Stock issuable or issued pursuant
to a transaction described in subsection 8(d)(iii) hereof;

                                (2)     shares of Common Stock issuable or
issued to employees, consultants or directors of this Corporation directly or
pursuant to a stock option plan or restricted stock plan approved by the Board
of Directors of this Corporation, including the representatives of the Series B
Convertible Preferred Stock, including all outstanding and granted options;

                                (3)     shares of Common Stock issuable or
issued upon conversion of the Series A Participating Preferred Stock or Series B
Convertible Preferred Stock or as dividends or distributions on the Series A
Participating Preferred Stock or Series B Convertible Preferred Stock;

                                (4)     shares of Common Stock issuable or
issued upon exercise of warrants issued to banks, equipment lessors or other
venders, where such Common Stock or




                                     - 9 -
<PAGE>   10


warrants were approved by the Board of Directors, including the representatives
of the Series B Convertible Preferred Stock; or

                                (5)     shares of Common Stock issuable or
issued as consideration for business combinations or corporate partnering
agreements approved by the Board of Directors, including the representatives of
the Series B Convertible Preferred Stock.

                        (iii)   In the event this Corporation should at any time
or from time to time after the Purchase Date fix a record date for the
effectuation of a split or subdivision of the outstanding shares of Common Stock
or the determination of holders of Common Stock entitled to receive a dividend
or other distribution payable in additional shares of Common Stock or other
securities or rights convertible into, or entitling the holder thereof to
receive directly or indirectly, additional shares of Common Stock (hereinafter
referred to as "COMMON STOCK EQUIVALENTS") without payment of any consideration
by such holder for the additional shares of Common Stock or the Common Stock
Equivalents (including the additional shares of Common Stock issuable upon
conversion or exercise thereof), then, as of such record date (or the date of
such dividend distribution, split or subdivision if no record date is fixed),
the Conversion Price of the Series B Convertible Preferred Stock shall be
appropriately decreased so that the number of shares of Common Stock issuable on
conversion of each share of such series shall be increased in proportion to such
increase of the aggregate of shares of Common Stock outstanding and those
issuable with respect to such Common Stock Equivalents.

                        (iv)    If the number of shares of Common Stock
outstanding at any time after the Purchase Date is decreased by a combination of
the outstanding shares of Common Stock, then, following the record date of such
combination, the Conversion Price for the Series B Convertible Preferred Stock
shall be appropriately increased so that the number of shares of Common Stock
issuable on conversion of each share of such series shall be decreased in
proportion to such decrease in outstanding shares.

                (e)     Other Distributions. In the event this Corporation shall
declare a distribution payable in securities of other persons, evidences of
indebtedness issued by this Corporation or other persons, assets (excluding cash
dividends) or options or rights not referred to in Section 8(d)(iii), then, in
each such case for the purpose of this Section 8(e), the holders of the Series B
Convertible Preferred Stock shall be entitled to a proportionate share of any
such distribution as though they were the holders of the number of shares of
Common Stock of this corporation into which their shares of Series B Convertible
Preferred Stock are convertible as of the record date fixed for the
determination of the holders of Common Stock of this Corporation entitled to
receive such distribution.

                (f)     Recapitalizations. If at any time or from time to time
there shall be a recapitalization of the Common Stock (other than a subdivision,
combination or merger or sale of assets transaction provided for elsewhere in
this Section 8 or in Section 6), provision shall be made so that the holders of
the Series B Convertible Preferred Stock shall thereafter be entitled to receive
upon conversion of the Series B Convertible Preferred Stock the number of shares
of stock or other securities or property of this corporation or otherwise to
which a holder of Common Stock




                                     - 10 -
<PAGE>   11

deliverable upon conversion would have been entitled on such recapitalization.
In any such case, appropriate adjustment shall be made in the application of the
provisions of this Section 8 with respect to the rights of the holders of the
Series B Convertible Preferred Stock after the recapitalization to the end that
the provisions of this Section 8 (including adjustment of the Conversion Price
then in effect and the number of shares purchasable upon conversion of the
Series B Convertible Preferred Stock) shall be applicable after that event as
nearly equivalent as may be practicable.

                (g)     No Impairment. This Corporation will not, by amendment
of its Certificate of Incorporation or through any reorganization,
recapitalization, transfer of assets, consolidation, merger, dissolution, issue
or sale of securities or any other voluntary action, avoid or seek to avoid the
observance or performance of any of the terms to be observed or performed
hereunder by this corporation, but will at all times in good faith assist in the
carrying out of all the provisions of this Section 8(h) and in the taking of all
such action as may be necessary or appropriate in order to protect the
Conversion Rights of the holders of the Series B Convertible Preferred Stock
against impairment.

                (h)     No Fractional Shares and Certificate as to Adjustments.

                        (i)     No fractional shares shall be issued upon the
conversion of any share or shares of the Series B Convertible Preferred Stock,
and the number of shares of Common Stock to be issued shall be determined by
rounding to the nearest whole share. Such conversion shall be determined on the
basis of the total number of shares of Series B Convertible Preferred Stock the
holder is at the time converting into Common Stock and such rounding shall apply
to the number of shares of Common Stock issuable upon such aggregate conversion.

                        (ii)    Upon the occurrence of each adjustment or
readjustment of the Conversion Price of the Series B Convertible Preferred Stock
pursuant to this Section 8, this Corporation, at its expense, shall promptly
compute such adjustment or readjustment in accordance with the terms hereof and
prepare and furnish to each holder of Series B Convertible Preferred Stock a
certificate setting forth such adjustment or readjustment and showing in detail
the facts upon which such adjustment or readjustment is based. This Corporation
shall, upon the written request at any time of any holder of Series B
Convertible Preferred Stock, furnish or cause to be furnished to such holder a
like certificate setting forth (A) such adjustment and readjustment, (B) the
Conversion Price for the Series B Convertible Preferred Stock at the time in
effect, and (C) the number of shares of Common Stock and the amount, if any, of
other property that at the time would be received upon the conversion of a share
of Series B Convertible Preferred Stock.

                (i)     Notices of Record Date. In the event of any taking by
this Corporation of a record of the holders of any class of securities for the
purpose of determining the holders thereof who are entitled to receive any
dividend (other than a cash dividend) or other distribution, any right to
subscribe for, purchase or otherwise acquire any shares of stock of any class or
any other securities or property, or to receive any other right, this
corporation shall mail to each holder of Series B Convertible Preferred Stock,
at least twenty (20) days prior to the date specified therein, a



                                     - 11 -
<PAGE>   12

notice specifying the date on which any such record is to be taken for the
purpose of such dividend, distribution or right, and the amount and character of
such dividend, distribution or right.

                (j)     Reservation of Stock Issuable Upon Conversion. This
Corporation shall at all times reserve and keep available out of its authorized
but unissued shares of Common Stock, solely for the purpose of effecting the
conversion of the shares of the Series B Convertible Preferred Stock, such
number of its shares of Common Stock as shall from time to time be sufficient to
effect the conversion of all outstanding shares of the Series B Convertible
Preferred Stock; and if at any time the number of authorized but unissued shares
of Common Stock shall not be sufficient to effect the conversion of all then
outstanding shares of the Series B Convertible Preferred Stock, in addition to
such other remedies as shall be available to the holder of such Series B
Convertible Preferred Stock, this corporation will take such corporate action as
may, in the opinion of its counsel, be necessary to increase its authorized but
unissued shares of Common Stock to such number of shares as shall be sufficient
for such purposes, including, without limitation, engaging in best efforts to
obtain the requisite stockholder approval of any necessary amendment to the
Corporation's Certificate of Incorporation.

                (k)     Notices. Any notice required by the provisions of this
Section 8 to be given to the holders of shares of Series B Convertible Preferred
Stock shall be deemed given if deposited in the United States mail, postage
prepaid, and addressed to each holder of record at his address appearing on the
books of this corporation.

        9.      Protective Provisions. This Corporation shall not take any of
the following actions without first obtaining the approval (by vote or written
consent, as provided by law) of the holders of at least a majority of the then
outstanding shares of Series B Convertible Preferred Stock:

                (a)     Amend or repeal any provision, or add any provision to
the Corporation's Certificate of Incorporation or Bylaws which change the rights
of the Series B Convertible Preferred Stock;

                (b)     Increase or decrease (other than by redemption or
conversion) the total number of authorized shares of Preferred Stock or Common
Stock;

                (c)     Authorize or issue, or obligate itself to issue, any
other security, including any other security convertible into or exercisable for
any security having a preference over, or being on a parity with, the Series B
Convertible Preferred Stock with respect to voting, dividends, redemption or
upon liquidation;

                (d)     Issue any shares of Common Stock, other than

                        (i)     shares of Common Stock issuable or issued to
employees, consultants or directors of this Corporation directly or pursuant to
a stock option plan or restricted stock plan approved by the Board of Directors
of this Corporation, including the representatives of the Series B Convertible
Preferred Stock;




                                     - 12 -
<PAGE>   13

                        (ii)    shares of Common Stock issuable or issued upon
conversion of the Series A Participating Preferred Stock or Series B Convertible
Preferred Stock or as dividends or distributions on the Series A Participating
Preferred Stock or Series B Convertible Preferred Stock;

                        (iii)   shares of Common Stock issuable or issued upon
exercise of warrants issued to banks, equipment lessors or other venders, where
such Common Stock or warrants were approved by the Board of Directors, including
the representatives of the Series B Convertible Preferred Stock; or

                        (iv)    shares of Common Stock issuable or issued as
consideration for business combinations or corporate partnering agreements
approved by the Board of Directors, including the representatives of the Series
B Convertible Preferred Stock.

                (e)     Declare or pay any dividends on its Common Stock or
redeem, purchase or otherwise acquire (or pay into or set aside for a sinking
fund for such purpose) any share or shares of Common Stock; provided, however,
that this restriction shall not apply to the repurchase of shares of Common
stock from employees, officers, directors, consultants or other persons
performing services for this Corporation or any subsidiary pursuant to
agreements under which this Corporation has the option to repurchase such shares
at cost or at cost upon the occurrence of certain events, such as the
termination of employment;

                (f)     Sell, convey, or otherwise dispose of all or
substantially all of its property or business or merge into or consolidate with
any other corporation (other than a wholly-owned subsidiary corporation) or
effect any transaction or series of related transactions in which more than
fifty percent (50%) of the voting power of this corporation is disposed of;

                (g)     Repurchase any series of Preferred Stock, other than a
repurchase pursuant to Section 7 hereof; or

                (h)     Increase or decrease the size of the Corporation's Board
of Directors.

        RESOLVED FURTHER, that the President or any Vice President and the
Secretary or any Assistant Secretary of this corporation be, and they hereby
are, authorized and directed to prepare and file a Certificate of Designation of
Rights, Preferences and Privileges in accordance with the foregoing resolution
and the provisions of Delaware law and to take such actions as they may deem
necessary or appropriate to carry out the intent of the foregoing resolution."

        We further declare under penalty of perjury that the matters set forth
in the foregoing Certificate of Designation are true and correct of our own
knowledge.




                                     - 13 -
<PAGE>   14

        Executed at Sunnyvale, California on May 20, 1999


                                        ----------------------------------------
                                        William N. Starling
                                        President and Chief Executive Officer



                                        ----------------------------------------
                                        Chris F. Fennell, Secretary





                                     - 14 -




<PAGE>   1

                                                                       EXHIBIT 9

                          CARDIAC PATHWAYS CORPORATION

                          REGISTRATION RIGHTS AGREEMENT


        This Agreement is made as of May 20, 1999 by and between Cardiac
Pathways Corporation, a Delaware corporation (the "COMPANY"), and the persons
and entities listed on the Schedule of Holders attached hereto as Schedule 1
(the "HOLDERS").

        WHEREAS, pursuant to a Stock Purchase Agreement (the "STOCK PURCHASE
AGREEMENT") of even date herewith between the Company, and the Holders, the
Company is selling up to 40,000 shares of Series B Convertible Preferred Stock
convertible into shares of the Company's Common Stock, as set forth in the Stock
Purchase Agreement (the "SHARES") to the Holders for the aggregate consideration
of between $25,000,000 and $40,000,000; and

        WHEREAS, to induce the Holders to enter into the Stock Purchase
Agreement, the Company has agreed to provide the Holders with certain
registration rights with respect to the Shares pursuant to the terms and
conditions of this Agreement;

        NOW, THEREFORE, in consideration of the mutual promises, covenants and
conditions set forth in this Agreement, the Company and the Holders agree as
follows:

        1.      Certain Definitions. As used in this Agreement, the following
terms shall have the following respective meanings:

                (a)     Business Day. Each Monday, Tuesday, Wednesday, Thursday
and Friday that is not a day on which banking institutions in New York are
authorized or obligated by law or executive order to close.

                (b)     Exchange Act. The Securities Exchange Act of 1934, as
amended, or any similar federal statute and the rules and regulations of the SEC
promulgated thereunder.

                (c)     Losses. See Section 5(a) hereof.

                (d)     Prospectus. The prospectus included in any Registration
Statement (including, without limitation, a prospectus that discloses
information previously omitted from a prospectus filed as part of an effective
registration statement in reliance upon Rule 430A promulgated under the
Securities Act), as amended or supplemented by any prospectus supplement,
including, without limitation, with respect to the terms of the offering of any
portion of the Registrable Securities covered by such Registration Statement and
all other amendments and supplements to the Prospectus, including post-effective
amendments, and all material incorporated by reference or deemed to be
incorporated by reference in such Prospectus. Such Prospectus and any amendments
or supplements shall comply with the Securities Act.



<PAGE>   2

                (e)     Register. The terms "register," "registered" and
"registration" refer to a registration effected by preparing and filing a
registration statement in compliance with the Securities Act, and the
declaration or ordering of the effectiveness of such registration statement by
the SEC.

                (f)     Registrable Securities. The Shares or other securities
issued or issuable with respect to the Shares as a result of any conversion,
stock split, stock dividend, recapitalization, exchange, combination, merger,
consolidation, distribution or similar event.

                (g)     Registration Expenses. See Section 4 hereof.

                (h)     Registration Statement. Any registration statement of
the Company which covers any of the Registrable Securities pursuant to the
provisions of this Agreement, including the Prospectus, amendments and
supplements to such registration statement, including post-effective amendments,
all exhibits, and all material incorporated by reference or deemed to be
incorporated by reference in such registration statement. Such Registration
Statement and any amendments or supplements thereto shall comply with the
Securities Act.

                (i)     Rule 144. Rule 144 under the Securities Act, as such
Rule may be amended from time to time, or any similar rule or regulation
hereafter adopted by the SEC.

                (j)     SEC. The Securities and Exchange Commission.

                (k)     Securities Act. The Securities Act of 1933, as amended,
and the rules and regulations promulgated by the SEC thereunder.

                (l)     Special Counsel. Cooley Godward LLP or such other
successor counsel as shall be specified by the BankAmerica Ventures on behalf of
the Holders as special counsel to the Holders, the fees and expenses of which
will be paid by the Company pursuant to Section 4 hereof.

        2.      Registration.

                (a)     Demand Registration.

                        (i)     Request from Holders. If the Company shall
receive at any time after May 31, 2000 a written request from the Holders of
forty five percent (45%) of the Registrable Securities then outstanding that the
Company file a registration statement under the Securities Act covering the
registration of at least twenty percent (20%) of the Registrable Securities then
outstanding and having an aggregate offering price, net of underwriting
discounts and commissions, of at least $7,500,000, then the Company shall:

                                (1)     within ten (10) days of the receipt
thereof, give written notice of such request to all Holders; and



                                      -2-
<PAGE>   3

                                (2)     effect as soon as practicable, and in
any event within sixty (60) days of the receipt of such request, the
registration under the Securities Act of all Registrable Securities that the
Holders request to be registered, subject to the limitations of subsections
2(a)(ii), 2(a)(iii) and 2(a(iv), within twenty (20) days of the mailing of such
notice by the Company in accordance with Section 9(d).

                        (ii)    Underwriting. If the Holders initiating the
registration request hereunder ("INITIATING HOLDERS") intend to distribute the
Registrable Securities covered by their request by means of an underwriting,
they shall so advise the Company as a part of their request made pursuant to
subsection 2(a)(i) and the Company shall include such information in the written
notice referred to in subsection 2(a)(i)(1). The underwriter will be selected by
the Company and shall be reasonably acceptable to a majority in interest of the
Initiating Holders. In such event, the right of any Holder to include his
Registrable Securities in such registration shall be conditioned upon such
Holder's participation in such underwriting and the inclusion of such Holder's
Registrable Securities in the underwriting (unless otherwise mutually agreed by
a majority in interest of the Initiating Holders and such Holder) to the extent
provided herein. All Holders proposing to distribute their securities through
such underwriting shall enter into an underwriting agreement in customary form
with the underwriter or underwriters selected for such underwriting.
Notwithstanding any other provision of this Section 2(a), if the underwriter
advises the Initiating Holders in writing that marketing factors require a
limitation of the number of shares to be underwritten, then the Initiating
Holders shall so advise all Holders of Registrable Securities that would
otherwise be underwritten pursuant hereto, and the number of shares of
Registrable Securities that may be included in the underwriting shall be
allocated among all Holders electing to include shares in the offering,
including the Initiating Holders, in proportion (as nearly as practicable) to
the amount of Registrable Securities of the Company owned by each Holder;
provided, however, that for purposes of making any such reduction, each Holder
which is an LLC or a partnership, together with the affiliates, partners and
retired partners of such Holder, the estates and family members of any such
partners and retired partners and their spouses, and any trusts for the benefit
of any of the foregoing persons shall be deemed to be a single Holder of
Registrable Securities and any pro-rata reduction with respect to such Holder
shall be based upon the aggregate amount of Registrable Securities owned by all
entities and individuals included in such Holder, as defined in this proviso
(and the aggregate amount so allocated to such Holder shall be allocated among
the entities and individuals included in such Holder in such manner as such LLC
or partnership shall reasonably determined. No Registrable Securities shall be
excluded from the underwriting until all other securities proposed to be
included by the Company and its stockholder have been excluded.

        If any Holder of Registrable Securities disapproves of the terms of the
underwriting, such person may elect to withdraw therefrom by written notice to
the Company, the managing underwriter and the Initiating Holders. The
Registrable Securities and/or other securities so withdrawn shall also be
withdrawn from registration, and such Registrable Securities shall not be
transferred in a public distribution prior to 180 days after the effective date
of such registration, or such other shorter period of time as the underwriters
may permit. If by the withdrawal of such Registrable Securities a greater




                                      -3-
<PAGE>   4

number of Registrable Securities held by other Holders may be included in such
registration (up to the maximum of any limitation then imposed by the
underwriters), then the Company shall offer to all Holders, if any, whose shares
have been excluded from the registration by the terms of the preceding
paragraph, the right to include additional Registrable Securities in the same
proportion used in determining the underwriter limitation in this Section 2(a)
up to the limitation then imposed by the underwriters.

                        (iii)   Deferral. Notwithstanding the foregoing, if the
Company shall furnish to Holders requesting a registration statement pursuant to
this Section 2(a), a certificate from the Company stating that in the good faith
judgment of the Board of Directors of the Company, it would be seriously
detrimental to the Company and its stockholders for such registration statement
to be filed and it is therefore essential to defer the filing of such
registration statement, the Company shall have the right to defer taking action
with respect to such filing for a period of not more than ninety (90) days after
receipt of the request of the Initiating Holders; provided, however, that the
Company may not utilize this right more than once in any twelve (12) month
period.

                        (iv)    Exceptions. In addition, the Company shall not
be obligated to effect, or to take any action to effect, any registration
pursuant to this Section 2(a):

                                (1)     After the Company has effected two
registrations pursuant to this Section 2(a) and such registrations have been
declared or ordered effective;

                                (2)     During the period starting with the date
sixty (60) days prior to the Company's good faith estimate of the date of filing
of, and ending on a date one hundred eighty (180) days after the effective date
of, a registration subject to Section 2(b) hereof; provided that the Company is
actively employing in good faith all reasonable efforts to cause such
registration statement to be effective; or

                                (3)     If the Initiating Holders propose to
dispose of shares of Registrable Securities that may be immediately registered
on Form S-3 pursuant to a request made pursuant to Section 2(c) below.

                (b)     Company Registration.

                        (i)     Notice of Registration. If at any time or from
time to time, the Company shall determine to register any of its securities,
either for its own account or the account of a security holder or holders other
than (i) a registration relating solely to employee benefit plans, (ii) a
registration statement on Form S-4 relating to a merger or acquisition by or of
the Company or (iii) a registration relating solely to a Commission Rule 145
transaction, the Company will:

                                (1)     promptly give to each Holder written
notice thereof; and

                                (2)     include in such registration (and any
related qualification under blue sky laws or other compliance), and in any
underwriting involved in such registration, all the




                                      -4-
<PAGE>   5

Registrable Securities specified in a written request or requests made within
twenty (20) days after receipt of such written notice from the Company by any
Holder, but only to the extent that such inclusion will not diminish the number
of securities included by the Company or by holders of the Company's securities
who have demanded such registration.

                        (ii)    Underwriting. If the registration of which the
Company gives notice is for a registered public offering involving an
underwriting, the Company shall so advise the Holders as a part of the written
notice given pursuant to Section 2(b)(i). In such event, the right of any Holder
to registration pursuant to Section 2(b) shall be conditioned upon such Holder's
participation in such underwriting and the inclusion of Registrable Securities
in the underwriting to the extent provided herein. All Holders proposing to
distribute their securities through such underwriting shall (together with the
Company and the other holders distributing their securities through such
underwriting) enter into an underwriting agreement in customary form with the
managing underwriter selected for such underwriting by the Company (or by the
holders who have demanded such registration). Notwithstanding any other
provision of this Section 2(b), if the managing underwriter determines that
marketing factors require a limitation of the number of shares to be
underwritten, the number of shares that may be included in the underwriting will
be allocated, first, to the Company; and second, to each of the Holders
requesting inclusion of their Registrable Securities in such registration
statement on a pro rata basis based on the total number of Registrable
Securities held by each such Holder; provided, however that a minimum of twenty
five percent (25%) of the shares to be underwritten will be allocated to the
Holders requesting inclusion in such offering, on a pro rata basis and provided
further, that in the event of such limitation, no third party other than a
Holder invoking the right to register shares under this Section 2(b) shall be
entitled to sell shares in such offering. To facilitate the allocation of shares
in accordance with the above provisions, the Company or the underwriters may
round the number of shares allocated to any Holder or other holder to the
nearest 100 shares. For purposes of making any pro rata reduction pursuant to
the preceding sentence, each Holder which is an LLC or a partnership together
with the affiliates, partners and retired partners of such Holder of Registrable
Securities and any pro-rata reduction with respect to such Holder shall be based
upon the aggregate amount of Registrable Securities owned by all entities and
individuals included in such Holder, as defined in this sentence (and the
aggregate amount so allocated to such Holder shall be allocated among the
entities and individuals included in such Holder in such manner as such
partnership shall reasonably determine).

        The Company shall advise all Holders and other holders distributing
their securities through such underwriting of any such limitation, and the
number of shares of Registrable Securities and other securities that may be
included in the registration and underwriting shall be allocated among all
Holders and such other holders in proportion, as nearly as practicable, to the
respective amounts of Registrable Securities held by such Holders and such other
holders at the time of filing the registration statement. If any Holder or
holder disapproves of the terms of any such underwriting, he may elect to
withdraw therefrom by written notice to the Company and the managing
underwriter. Any securities excluded or withdrawn from such underwriting shall
be withdrawn from such registration, and shall not be transferred in a public
distribution prior to 180 days after the effective




                                      -5-
<PAGE>   6

date of the registration statement relating thereto, or such other shorter
period of time as the underwriters may require. If by the withdrawal of such
Registrable Securities a greater number of Registrable Securities held by other
Holders may be included in such registration (up to the maximum of any
limitation then imposed by the underwriters), then the Company shall offer to
all Holders, if any, whose shares have been excluded from the registration by
the terms of the preceding paragraph, the right to include additional
Registrable Securities in the same proportion used in determining the
underwriter limitation in this Section 2(b)(ii) up to the limitation then
imposed by the underwriters.

                        (iii)   Right to Terminate Registration. The Company
shall have the right to terminate or withdraw any registration initiated by it
under this Section 2(b) prior to the effectiveness of such registration, whether
or not any Holder has elected to include securities in such registration.

                        (iv)    Other Registration Rights. No Stockholder of the
Company shall be granted rights to participate in a Company registration that
would reduce the number of shares permitted to be included by the Holders of
Registrable Securities in such registration without the consent of holders of at
least sixty six and two thirds percent (66 2/3%) of the Registrable Securities.

                (c)     Form S-3 Registration. If the Company shall receive at
any time after May 31, 2000 a written request or requests from the Holders of
forty five percent (45%) of the Registrable Securities then outstanding that the
Company effect a registration on Form S-3 and any related qualification or
compliance with respect to all or a part of the Registrable Securities owned by
such Holder or Holders, the Company will:

                        (i)     promptly give written notice of the proposed
registration, and any related qualification or compliance, to all other Holders;
and

                        (ii)    as soon as practicable, effect such registration
and all such qualifications and compliances as may be so requested and as would
permit or facilitate the sale and distribution of all or such portion of such
Holder's or Holders' Registrable Securities as are specified in such request,
together with all or such portion of the Registrable Securities of any other
Holder or Holders joining in such request as are specified in a written request
given within fifteen (15) days after receipt of such written notice from the
Company; provided, however, that the Company shall not be obligated to effect
any such registration, qualification or compliance, pursuant to this Section
2(c): (1) if Form S-3 is not available for such offering by the Holders; (2) if
the Holders, together with the holders of any other securities of the Company
entitled to inclusion in such registration, propose to sell Registrable
Securities and such other securities (if any) at an aggregate price to the
public (net of any underwriters' discounts or commissions) of less than
$2,000,000; (3) if the Company shall furnish to the Holders a certificate
stating that in the good faith judgment of the Board of Directors of the
Company, it would be seriously detrimental to the Company and its stockholders
for such Form S-3 Registration to be effected at such time, in which event the
Company shall have the right to defer the filing of the Form S-3 registration
statement for a period of not more than one hundred twenty (120) days after
receipt of the request of the Holder or Holders under this




                                      -6-
<PAGE>   7

Section 2(c); provided, however, that the Company shall not utilize this right
more than once in any twelve (12) month period; (4) if the Company has, within
the twelve (12) month period preceding the date of such request, already
effected one (1) registration on Form S-3 for the Holders pursuant to this
Section 2(c); or (5) in any particular jurisdiction in which the Company would
be required to qualify to do business or to execute a general consent to service
of process in effecting such registration, qualification or compliance.

                (d)     "Market Stand-Off" Agreement. Each Holder of more than
one percent (1%) of the Company's outstanding securities hereby agrees that,
during the period of duration (not to exceed ninety (90) days) specified by the
Company and an underwriter of common stock or other securities of the Company,
following the effective date of a registration statement of the Company's
securities filed under the Securities Act, it shall not, to the extent requested
by the Company and such underwriter, directly or indirectly sell, offer to sell,
contract to sell (including, without limitation, any short sale), grant any
option to purchase or otherwise transfer or dispose of (other than to donees who
agree to be similarly bound) any securities of the Company held by it at any
time during such period, except common stock included in such registration;
provided, however, that all officers, directors and employees of the Company
enter into similar agreements. In order to enforce the foregoing covenant, the
Company may impose stop-transfer instructions with respect to the securities of
each Holder (and the shares or securities of every other person subject to the
foregoing restriction) until the end of such period.

        3.      Registration Procedures. In connection with the Company's
registration obligations under Section 2 hereof, the Company shall effect such
registrations to permit the sale of the Registrable Securities in accordance
with the intended method or methods of disposition thereof and pursuant thereto
the Company shall as expeditiously as possible:

                (a)     Prepare and file with the SEC a Registration Statement
or Registration Statements on any appropriate form under the Securities Act
available for the sale of the Registrable Securities by the Holders in
accordance with the intended method or methods of distribution thereof, and
cause each such Registration Statement to become effective and remain effective
as provided herein; provided, that before filing any such Registration Statement
or Prospectus or any amendments or supplements thereto (other than documents
that would be incorporated or deemed to be incorporated therein by reference and
that the Company is required by applicable securities laws or stock exchange
requirements to file) the Company shall furnish to the Special Counsel copies of
all such documents proposed to be filed, which documents will be subject to the
review of the Special Counsel.

                (b)     Prepare and file with the SEC such amendments and
post-effective amendments to each Registration Statement as may be necessary to
keep such Registration Statement continuously effective for the applicable
period specified in Section 2; cause the related Prospectus to be timely
supplemented by any required Prospectus supplement, and as so supplemented to be
filed pursuant to Rule 424 (or any similar provisions then in force) under the
Securities Act; and comply with the provisions of the Securities Act with
respect to the disposition




                                      -7-
<PAGE>   8

of all securities covered by such Registration Statement during the applicable
period in accordance with the intended methods of disposition by the Holders set
forth in such Registration Statement as so amended or such Prospectus as so
supplemented.

                (c)     Notify the Holders and the Special Counsel promptly, and
(if requested by any such person) confirm such notice in writing, (i) when a
Prospectus or any Prospectus supplement or post-effective amendment has been
filed, and, with respect to a Registration Statement or any post-effective
amendment, when the same has become effective, (ii) of any request by the SEC or
any other federal or state governmental authority during the period of
effectiveness of the Registration Statement for amendments or supplements to a
Registration Statement or related Prospectus or for additional information,
(iii) of the issuance by the SEC or any other federal or state governmental
authority of any stop order suspending the effectiveness of a Registration
Statement or the initiation of any proceedings for that purpose, (iv) of the
receipt by the Company of any notification with respect to the suspension of the
qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction or the initiation or threatening of any
proceeding for such purpose, (v) of the happening of any event which makes any
statement made in such Registration Statement or related Prospectus or any
document incorporated or deemed to be incorporated therein by reference untrue
in any material respect or which requires the making of any changes in the
Registration Statement or Prospectus so that, in the case of the Registration
Statement, it will not contain any untrue statement of a material fact or omit
to state any material fact required to be stated therein or necessary to make
the statements therein not misleading, and that in the case of the Prospectus,
it will not contain any untrue statement of a material fact or omit to state any
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading, and (vi) of the Company's reasonable
determination that a post-effective amendment to a Registration Statement would
be appropriate.

                (d)     Use every reasonable effort to obtain the withdrawal of
any order suspending the effectiveness of a Registration Statement, or the
lifting of any suspension of the qualification (or exemption from qualification)
of any of the Registrable Securities for sale in any jurisdiction, at the
earliest possible moment.

                (e)     Subject to the last paragraph of this Section 3, if
reasonably requested by the Holders (i) promptly incorporate in a Prospectus
supplement or post-effective amendment such information as the Holders agrees
should be included therein as required by applicable law, (ii) make all required
filings of such Prospectus supplement or such post-effective amendment as soon
as practicable after the Company has received notification of the matters to be
incorporated in such Prospectus supplement or post-effective amendment, and
(iii) supplement or make amendments to any Registration Statement consistent
with clause (i) or (ii) above; provided, that the Company shall not be required
to take any actions under this Section 3(e) that are not, in the opinion of
counsel for the Company, necessary or advisable to comply with applicable law.




                                      -8-
<PAGE>   9

                (f)     Furnish to the Holders and the Special Counsel, without
charge, at least one conformed copy of the Registration Statement or
Registration Statements and any post-effective amendment thereto, including
financial statements, but excluding schedules, all documents incorporated or
deemed to be incorporated therein by reference and all exhibits (unless
requested in writing by the Holders or Special Counsel).

                (g)     Promptly deliver to the Holders and the Special Counsel,
without charge, as many copies of the Prospectus or Prospectuses relating to
such Registrable Securities (including each preliminary prospectus) and any
amendment or supplement thereto as such persons may reasonably request; and the
Company hereby consents to the use of such Prospectus or each amendment or
supplement thereto by the Holders in connection with the offering and sale of
the Registrable Securities covered by such Prospectus or any amendment or
supplement thereto.

                (h)     Prior to any public offering of Registrable Securities,
to register or qualify or cooperate with the Holders and the Special Counsel in
connection with the registration or qualification (or exemption from such
registration or qualification) of such Registrable Securities for offer and sale
under the securities or Blue Sky laws of such jurisdictions within the United
States as the Holders reasonably request in writing; keep each such registration
or qualification (or exemption therefrom) effective during the period such
Registration Statement is required to be kept effective and do any and all other
acts or things necessary or advisable to enable the disposition in such
jurisdictions of the Registrable Securities covered by the applicable
Registration Statement; provided, that the Company will not be required to (i)
qualify generally to do business in any jurisdiction where it is not then so
qualified or (ii) take any action that would subject it to general service of
process in suits or to taxation in any such jurisdiction where it is not then so
subject.

                (i)     Cause the Registrable Securities covered by the
applicable Registration Statement to be registered with or approved by such
other governmental agencies or authorities within the United States, except as
may be required solely as a consequence of the nature of a Holder, in which case
the Company will cooperate in all reasonable respects with the filing of such
Registration Statement and the granting of such approvals, as may be necessary
to enable the Holders or to consummate the disposition of such Registrable
Securities.

                (j)     Upon the occurrence of any event contemplated by Section
3(c)(v) or 3(c)(vi) above, prepare a supplement or post-effective amendment to
each Registration Statement or a supplement to the related Prospectus or any
document incorporated therein by reference or file any other required document
so that, as thereafter delivered to the purchasers of the Registrable Securities
being sold thereunder, such Prospectus will not contain an untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading.

                (k)     Notwithstanding anything in this Agreement to the
contrary, a Holder shall not be entitled to sell any of such Registrable
Securities pursuant to a Registration Statement or to receive a Prospectus
relating thereto unless such Holder (A) has at such time a current intent to
sell




                                      -9-
<PAGE>   10

such Registrable Securities, and confirms such intent in writing, and (B) has
furnished the Company promptly after the Company's request, such information
regarding the Holder and the distribution of such Registrable Securities as the
Company may from time to time reasonably request. The Company may refrain from
filing a registration for any Holder's Registrable Securities if it does not
furnish such information provided above. Each of the Holders agrees promptly to
furnish to the Company all information required to be disclosed in order to make
the information previously furnished to the Company by Holders not misleading
with respect to such Holder.

        The Holders agree by acquisition of the Registrable Securities that,
upon receipt of any notice from the Company of (A) the happening of any event of
the kind described in Section 3(c)(ii), 3(c)(iii), 3(c)(iv), 3(c)(v) or 3(c)(vi)
hereof or (B) that, in the reasonable judgment of the Company, it is advisable
to suspend use of the Prospectus for a discrete period of time due to pending
corporate developments, public filings with the SEC or similar events, the
Holders will forthwith discontinue disposition of such Registrable Securities
covered by such Registration Statement or Prospectus until the Holders' receipt
of the copies of the supplemented or amended Prospectus contemplated by Section
3(j) hereof, or until it is advised in writing (the "Advice") by the Company
that the use of the applicable Prospectus may be resumed, and has received
copies of any additional or supplemental filings that are incorporated or deemed
to be incorporated by reference in such Prospectus. The Company shall use its
reasonable efforts to insure that the use of the Prospectus may be resumed as
soon as practicable.

                (l)     Use its best efforts to furnish, on the date that such
Registrable Securities are delivered to the underwriters for sale, if such
securities are being sold through underwriters, (i) an opinion, dated as of such
date, of the counsel representing the Company for the purposes of such
registration, in form and substance as is customarily given to underwriters in
an underwritten public offering, addressed to the Holders participating in the
offering, and (ii) a letter dated as of such date, from the independent
certified public accountants of the Company, in form and substance as is
customarily given by independent certified public accountants to underwriters in
an underwritten public offering addressed to the Holder participating in the
offering.

        4.      Registration Expenses. All fees and expenses incident to the
Company's performance of or compliance with this Agreement shall be borne by the
Company whether or not any of the Registration Statements become effective. Such
fees and expenses shall include, without limitation, (i) all registration and
filing fees (including, without limitation, fees and expenses (x) with respect
to filings required to be made with the National Association of Securities
Dealers, Inc. and (y) of compliance with federal securities or Blue Sky laws,
(ii) printing expenses (including, without limitation, expenses of printing
certificates for Registrable Securities in a form eligible for deposit with The
Depository Trust Company), (iii) fees and disbursements of counsel for the
Company and the Special Counsel, and (iv) Securities Act liability insurance
obtained by the Company in its sole discretion. In addition, the Company shall
pay its internal expenses (including, without limitation, all salaries and
expenses of its officers and employees performing legal or accounting duties),
the expense of any annual audit, the fees and expenses incurred in connection
with the listing of the securities to be registered on any securities exchange
on which similar securities issued by the




                                      -10-
<PAGE>   11

Company are then listed and rating agency fees and the fees and expenses of any
person, including special experts, retained by the Company. Notwithstanding the
provisions of this Section 4, the Holders shall pay all registration expenses to
the extent that the Company is prohibited by applicable Blue Sky laws from
paying for or on behalf of the Holders.

        All underwriting discounts, selling commissions and stock transfer taxes
applicable to the sale of the Registrable Securities if any, shall be paid by
the Holders.

        5.      Indemnification.

                (a)     Indemnification by the Company. The Company shall
indemnify and hold harmless, to the fullest extent permitted by law, BankAmerica
Ventures ("BAV") each of its officers, directors, partners and members and each
selling Holder and each person, if any, who controls such Holder (within the
meaning of Section 15 of the Securities Act or Section 20(a) of the Exchange
Act) from and against all losses, liabilities, claims, damages and expenses
(including but not limited to reasonable attorney fees and any and all
reasonable expenses whatsoever incurred in investigating, preparing or defending
against litigation, commenced or threatened, or any claim whatsoever, and any
and all amounts paid in settlement of any claim or litigation) (collectively,
"LOSSES"), arising out of or based upon any untrue or alleged untrue statement
of a material fact contained in any Registration Statement, Prospectus or form
of Prospectus or in any amendment or supplement thereto or in any preliminary
prospectus, or arising out of or based upon any omission or alleged omission to
state therein a material fact required to be stated therein or necessary to make
the statements therein, in light of the circumstances under which they were
made, not misleading, except insofar as the same are based solely upon
information furnished in writing to the Company by BAV or any Holder expressly
for use therein; provided, that the Company shall not be liable to BAV or any
Holder (or any person controlling any of the Holders) to the extent that any
such Losses arise out of or are based upon an untrue statement or alleged untrue
statement or omission or alleged omission made in any prospectus if either (A)
(i) BAV or any of the Holders failed to send or deliver a copy of the Prospectus
with or prior to the delivery of written confirmation of the sale by the Holders
of a Registrable Security to the person asserting the claim from which such
Losses arise and (ii) the Prospectus would have corrected such untrue statement
or alleged untrue statement or such omission or alleged omission, or (B) (x)
such untrue statement or alleged untrue statement, omission or alleged omission
is corrected in an amendment or supplement to the Prospectus and (y) having
previously been furnished by or on behalf of the Company with copies of the
Prospectus as so amended or supplemented, the Holders thereafter fail to deliver
such Prospectus as so amended or supplemented, with or prior to the delivery of
written confirmation of the sale of a Registrable Security to the person
asserting the claim from which such Losses arise. The Company shall also
indemnify each underwriter and each person who controls such person (within the
meaning of Section 15 of the Securities Act or Section 20(a) of the Exchange
Act) to the same extent as provided above with respect to the indemnification of
the Holder.

                (b)     Indemnification by Holder. In connection with any
Registration Statement in which the Holders are participating, BAV or the
Holders shall furnish to the Company in writing




                                      -11-
<PAGE>   12

such information as the Company reasonably requests for use in connection with
any Registration Statement or Prospectus and each Holder agrees to indemnify, to
the fullest extent permitted by law, the Company, its directors and officers and
each other person who controls the Company (within the meaning of Section 15 of
the Securities Act and Section 20 of the Exchange Act), from and against all
Losses in each case arising out of or based upon any untrue statement of a
material fact contained in any Registration Statement, Prospectus or preliminary
prospectus or arising out of or based upon any omission of a material fact
required to be stated therein or necessary to make the statements therein, in
light of the circumstances under which they were made, not misleading, to the
extent, but only to the extent, that such untrue statement or omission is
contained in any information so furnished in writing by BAV or the Holders to
the Company expressly for use in such Registration Statement, Prospectus or
preliminary prospectus. In no event shall the liability of BAV or any of the
Holders hereunder exceed the net proceeds received from sales of its Registrable
Securities. The Company shall be entitled to receive indemnities from
underwriters participating in the distribution to the same extent as provided
above with respect to information so furnished in writing by such persons
expressly for use in any Prospectus or Registration Statement.

                (c)     Conduct of Indemnification Proceedings. If any person
shall be entitled to indemnity hereunder (an "INDEMNIFIED PARTY"), such
Indemnified Party shall give prompt notice to the party from which such
indemnity is sought (the "INDEMNIFYING PARTY") of any claim or of the
commencement of any proceeding with respect to which such Indemnified Party
seeks indemnification or contribution pursuant hereto; provided, that the
failure to so notify the Indemnifying Party shall not relieve the Indemnified
Party from any obligation or liability except to the extent that the Indemnified
Party has been prejudiced materially by such failure. All such fees and expenses
(including any fees and expenses incurred in connection with investigating or
preparing to defend such action or proceeding) shall be paid to the Indemnified
Party on a quarterly basis following written notice thereof to the Indemnified
Party (notwithstanding the absence of judicial determination as to the propriety
and enforceability of the Indemnified Party's obligation to reimburse the
Indemnified Party for such expense and the possibility that such payments might
later be held to have been improper by a court of competent jurisdiction). In
case any such action is brought against an Indemnified Party, the Indemnified
Party shall be entitled to participate therein and it may elect by written
notice delivered to the Indemnified Party within a reasonable period of time
after receiving the aforesaid notice from such Indemnified Party, to assume the
defense thereof with counsel reasonably satisfactory to such Indemnified Party.
No Indemnifying Party, in the defense of any such claim or litigation, shall,
except with the consent of each Indemnified Party, consent to entry of any
judgment or enter into any settlement which does not include as an unconditional
term thereof the giving by the claimant for plaintiff to such Indemnified Party
of a release from all liability in respect to such claim or litigation.

                (d)     Contribution. If the indemnification provided for in
this Section 5 is unavailable to an Indemnified Party under Section 5(a) or 5(b)
hereof in respect of any Losses or is insufficient to hold such Indemnified
Party harmless, then each applicable Indemnified Party, in lieu of indemnifying
such Indemnified Party, shall, jointly and severally, contribute to the amount
paid or




                                      -12-
<PAGE>   13

payable by such Indemnified Party as a result of such Losses, in such proportion
as is appropriate to reflect the relative fault of the Indemnified Party or
indemnifying parties, on the one hand, and such Indemnified Party, on the other
hand, in connection with the actions, statements or omissions that resulted in
such Losses as well as any other relevant equitable considerations. The relative
fault of such Indemnified Party or indemnifying parties, on the one hand, and
such Indemnified Party, on the other hand, shall be determined by reference to,
among other things, whether any action in question, including any untrue or
alleged untrue statement of a material fact or omission or alleged omission of a
material fact, has been taken or made by, or relates to information supplied by,
such Indemnified Party or Indemnified Party, and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
action, statement or omission. The amount paid or payable by a party as a result
of any Losses shall be deemed to include any reasonable legal or other
reasonable fees or expenses incurred by such party in connection with any
proceeding.

        The parties hereto agree that it would not be just and equitable if
contribution pursuant to this Section 5(d) were determined by pro rata
allocation or by any other method or allocation that does not take into account
the equitable considerations referred to in the immediately preceding paragraph.
Notwithstanding this Section 5(d), if any of the Holders are the Indemnifying
Party, such Holders shall not be required to contribute any amount in excess of
the amount by which the net proceeds exceeds the amount of any damages which
such Holder has otherwise been required to pay by reason of such untrue or
alleged untrue statement or omission or alleged omission. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation.

        The indemnity, contribution and expense reimbursement obligations of the
Company hereunder shall be in addition to any liability the Company may
otherwise have hereunder or otherwise. The provisions of this Section 5 shall
survive so long as Registrable Securities remain outstanding, notwithstanding
any termination of this Agreement.

        6.      Rule 144 Information Requirements. For so long as any
Registrable Securities are "restricted securities" under Rule 144, the Company
agrees to timely file the reports required to be filed by it under the
Securities Act and the Exchange Act.

        7.      Sale without Registration. The Holders agree to comply in all
respects with the provisions of this Section 7 so long as each certificate
representing the Shares is required to bear the legend in substantially the form
set forth in the Stock Purchase Agreement among the Holders and the Company (or
any similar legend). Prior to any proposed transfer of any Registrable
Securities by the Holders which shall not be registered under the Securities
Act, the Holders shall give written notice to the Company of its intention to
effect such transfer, accompanied by: (a) such information as is reasonably
necessary in order to establish that such transfer may be made without
registration under the Securities Act; and (b) at the expense of such Holder or
such Holder's transferee, an unqualified written opinion of legal counsel,
satisfactory in form and substance to the Company, to the effect that such
transfer may be made without registration under the Securities Act; provided
that




                                      -13-
<PAGE>   14

nothing contained in this Section 7 shall relieve the Company from complying
with its obligations pursuant to Section 2 of this Agreement.

        8.      Transfer of Rights. The rights granted to the Holders under
Section 2 hereof may be assigned to any transferee or assignee who is (a) a
subsidiary, parent, LLC, general partner, limited partner, retired partner,
member or retired member of a Holder, (b) a Holder's ancestors, descendants or
spouse or to trusts for the benefit of such persons or such Holder or (c) a
client, employee or member of BAV, provided that (i) such transfer may otherwise
be effected in accordance with applicable securities laws, (ii) the Company is
given written notice of any such transfer five (5) Business Days prior to the
date of said transfer, stating the name and address of said transferee or
assignee and identifying the securities with respect to which such registration
rights are being assigned and (iii) the transferee or assignee of such rights is
not deemed by the Board of Directors of the Company, in its reasonable judgment,
to be a competitor of the Company and provided further that the transferee or
assignee of such rights assumes in writing in a form reasonably acceptable to
the Company the obligations of the Holders under this Agreement. Notwithstanding
the above, BAV shall be permitted to transfer or assign its rights to Bank of
America Ventures, L.P. without the requirements set forth in Section 8.

        9.      Miscellaneous.

                (a)     Remedies. In the event of a breach by the Company of its
obligations under this Agreement, the Holders, in addition to being entitled to
exercise all rights granted by law, including recovery of damages, will be
entitled to specific performance of their rights under this Agreement. The
Company agrees that monetary damages would not be adequate compensation for any
loss incurred by reason of a breach by it of any of the provisions of this
Agreement and hereby further agrees that, in the event of any action for
specific performance in respect of such breach, it shall waive the defense that
a remedy at law would be adequate.

                (b)     No Conflicting Agreements. The Company has not, as of
the date hereof, and shall not, on or after the date of this Agreement, enter
into any agreement with respect to its securities which materially conflicts
with the rights granted to the Holders in this Agreement.

                (c)     Amendments and Waivers. The provisions of this
Agreement, including the provisions of this sentence, may not be amended,
modified or supplemented, and waivers or consents to departures from the
provisions hereof may not be given, unless the Company has obtained the written
consent of a majority of the Holders.

                (d)     Notices. All notices and other communications provided
for or permitted hereunder shall be made in writing and shall be deemed given
(i) when made, if made by hand delivery, (ii) upon confirmation, if made by
telecopier or (iii) one business day after being deposited with a reputable
next-day courier, postage prepaid, to the parties as follows:




                                      -14-
<PAGE>   15

                        (i)     if to the Holders, c/o BankAmerica Ventures, 950
Tower Lane, Suite 700, Foster City, California 94404, Attention: Mark Brooks and
Robert S. Fore, or to such other address as a Holder may hereafter furnish to
the Company in writing in accordance herewith, with a copy to Julia Davidson,
Cooley Godward LLP, Five Palo Alto Square, Palo Alto, CA 94306-2155.

                        (ii)    if to the Company, to Cardiac Pathways
Corporation, 995 Benecia Avenue, Sunnyvale, California 94086, Attention: G.
Michael Latta, Chief Financial Officer, or to such other address as the Company
may hereafter furnish to BAV in writing in accordance herewith, with a copy to
Chris F. Fennell, Wilson Sonsini Goodrich & Rosati, 650 Page Mill Road, Palo
Alto, California 94304-1050.

                (e)     Successors and Assigns. This Agreement shall inure to
the benefit of and be binding upon the successors and permitted assigns of each
of the parties.

                (f)     Counterparts. This Agreement may be executed in any
number of counterparts and by the parties hereto in separate counterparts, each
of which when so executed shall be deemed to be original and all of which taken
together shall constitute one and the same agreement.

                (g)     Headings. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

                (h)     Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF CALIFORNIA, AS APPLIED TO
CONTRACTS MADE AND PERFORMED WITHIN THE STATE OF CALIFORNIA, WITHOUT REGARD TO
PRINCIPLES OF CONFLICT OF LAWS.

                (i)     Severability. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction to be
invalid, void or unenforceable, the remainder of the terms, provisions,
covenants and restrictions set forth herein shall remain in full force and
effect and shall in no way be affected, impaired or invalidated, and the parties
hereto shall use their best efforts to find and employ an alternative means to
achieve the same or substantially the same result as that contemplated by such
term, provision, covenant or restriction. It is hereby stipulated and declared
to be the intention of the parties that they would have executed the remaining
terms, provisions, covenants and restrictions without including any of such
which may be hereafter declared invalid, void or unenforceable.

                (j)     Entire Agreement. This Agreement is intended by the
parties as a final expression of their agreement and is intended to be a
complete and exclusive statement of the agreement and understanding of the
parties hereto in respect of the subject matter contained herein and the
registration rights granted by the Company with respect to the Shares. There are
no restrictions, promises, warranties or undertakings, other than those set
forth or referred to herein, with respect to the registration rights granted by
the Company with respect to the Shares. This




                                      -15-
<PAGE>   16

Agreement supersedes all prior agreements and understandings among the parties
with respect to such registration rights.

                (k)     Attorneys' Fees. In any action or proceeding brought to
enforce any provision of this Agreement, or where any provision hereof is
validly asserted as a defense, the prevailing party, as determined by the court,
shall be entitled to recover reasonable attorneys' fees in addition to any other
available remedy.

                (l)     Further Assurances. Each of the parties hereto shall use
all reasonable efforts to take, or cause to be taken, all appropriate action, do
or cause to be done all things reasonably necessary, proper or advisable under
applicable law, and execute and deliver such documents and other papers, as may
be required to carry out the provisions of this Agreement and the other
documents contemplated hereby and consummate and make effective the transactions
contemplated hereby.

                (m)     Termination. This Agreement and the obligations of the
parties hereunder shall terminate upon the earlier of (i) May 20, 2004, or (ii)
or when all of the Registrable Securities have been sold or cease to be
Registrable Securities.

                (n)     Actions by the Holders. Any action to be taken by the
Holders pursuant to the Agreement may be taken by the Holders of a majority of
the Registrable Securities.



                                      -16-
<PAGE>   17

        The foregoing Registration Rights Agreement is hereby executed as of the
date first above written.


"COMPANY"

CARDIAC PATHWAYS CORPORATION


By: /s/ William N. Starling
   -------------------------------------
William N. Starling
President and Chief Executive Officer


"HOLDERS"


BANKAMERICA VENTURES


By: /s/ Anchie Y. Kuo
   -------------------------------------

Title:  Managing Director
      ----------------------------------



MORGAN STANLEY VENTURE PARTNERS III, L.P.

By: Morgan Stanley Venture Partners III, L.L.C.
     its General Partner
By: Morgan Stanley Venture Capital III, Inc.,
     its Institutional Managing Member

By: /s/ Fazle Husain
   -------------------------------------
Name:     Fazle Husain
Title:    General Partner
Address:  1221 Avenue of the Americas
          New York, New York  10020



                 SIGNATURE PAGE - CARDIAC PATHWAYS CORPORATION
                         REGISTRATION RIGHTS AGREEMENT

<PAGE>   18

MORGAN STANLEY VENTURE INVESTORS III, L.P.

By: Morgan Stanley Venture Partners III, L.L.C.
     its General Partner
By: Morgan Stanley Venture Capital III, Inc.,
     its Institutional Managing Member

By: /s/ Fazle Husain
   -------------------------------------
Name:     Fazle Husain
Title:    General Partner
Address:  1221 Avenue of the Americas
          New York, New York  10020


MORGAN STANLEY VENTURE PARTNERS
 ENTREPRENEUR FUND, L.P.

By: Morgan Stanley Venture Partners III, L.L.C.
     its General Partner
By: Morgan Stanley Venture Capital III, Inc.,
     its Institutional Managing Member

By: /s/ Fazle Husain
   -------------------------------------
Name:     Fazle Husain
Title:    General Partner
Address:  1221 Avenue of the Americas
          New York, New York  10020


VAN WAGONER CAPITAL MANAGEMENT

By: /s/ Garreat Van Wagoner
   -------------------------------------
Name:     Garreat Van Wagoner
Title:    President
Address:



                 SIGNATURE PAGE - CARDIAC PATHWAYS CORPORATION
                         REGISTRATION RIGHTS AGREEMENT
<PAGE>   19

STATE OF WISCONSIN INVESTMENT BOARD

By: /s/ John Nelson
   -------------------------------------
Name:   John Nelson
Title:  Investment Director
Address:


/s/ Thomas Fogarty
- ----------------------------------------
THOMAS FOGARTY




                 SIGNATURE PAGE - CARDIAC PATHWAYS CORPORATION
                         REGISTRATION RIGHTS AGREEMENT
<PAGE>   20


                                   Schedule 1

                               SCHEDULE OF HOLDERS



<TABLE>
<CAPTION>
                                                                               Number of Shares
                                                                                of Registrable
        Holder and Beneficial Owner               Nominee and Record Holder       Securities
 -----------------------------------------------------------------------------------------------
<S>                                                                                 <C>
 BankAmerica Ventures                                                               10,000
 Morgan Stanley Venture Partners III, L.P.                                           8,773
 Morgan Stanley Venture Investors III, L.P.                                            842
 Morgan Stanley Venture Partners
 Entrepreneurs Fund, L.P.                                                              385
 Van Wagoner Capital Management                                                      5,000
 State of Wisconsin Investment Board                                                 6,000
 Thomas Fogarty                                                                        500
</TABLE>







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