NITINOL MEDICAL TECHNOLOGIES INC
424B4, 1996-09-27
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
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<PAGE>
 
PROSPECTUS
3,000,000 Shares
 
Nitinol Medical
- --------------------------------------------------------------------------------
Technologies, Inc.
Common Stock
 
(par value $.001 per share)
 
All of the Common Stock offered hereby is being offered by Nitinol Medical
Technologies, Inc., a Delaware corporation (together with its subsidiaries,
"NMT" or the "Company").
 
Prior to the Offering, there has been no public market for the Common Stock.
See "Underwriting" for information relating to the factors considered in
determining the initial public offering price.
 
The Company's Common Stock has been approved for quotation on the Nasdaq
National Market under the symbol "NMTI".
 
SEE "RISK FACTORS" COMMENCING ON PAGE 6 FOR CERTAIN INFORMATION THAT SHOULD BE
CONSIDERED BY PROSPECTIVE INVESTORS.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------
                                            PRICE TO            UNDERWRITING        PROCEEDS TO
                                            PUBLIC              DISCOUNT(1)         COMPANY(2)
- -------------------------------------------------------------------------------------------------
<S>                                         <C>                 <C>                 <C>
Per Share                                   $11.00              $0.77               $10.23
- -------------------------------------------------------------------------------------------------
Total (3)                                   $33,000,000         $2,310,000          $30,690,000
- -------------------------------------------------------------------------------------------------
</TABLE> 
 
(1) The Company has agreed to indemnify the Underwriters against certain
liabilities, including liabilities under the Securities Act of 1933, as
amended. See "Underwriting."
(2) Before deducting expenses of the Offering payable by the Company, estimated
at $700,000.
(3) The Company has granted the Underwriters an option to purchase up to an
additional 450,000 shares of Common Stock, on the same terms as set forth
above, solely to cover over-allotments, if any. If such option is exercised in
full, the total Price to Public, Underwriting Discount and Proceeds to Company
will be $37,950,000, $2,656,500 and $35,293,500, respectively. See
"Underwriting."
 
The shares of Common Stock being offered by this Prospectus are being offered
by the Underwriters, subject to prior sale, when, as and if delivered to and
accepted by the Underwriters, and subject to approval of certain legal matters
by Cravath, Swaine & Moore, counsel for the Underwriters. It is expected that
delivery of the shares of Common Stock will be made against payment therefor on
or about October 2, 1996 at the offices of J.P. Morgan Securities Inc., 60 Wall
Street, New York, New York.
 
J.P. MORGAN & CO.
                                CS FIRST BOSTON
                                                       JEFFERIES & COMPANY, INC.
 
September 27, 1996
<PAGE>
 
No person has been authorized to give any information or make any
representations not contained in this Prospectus and, if given or made, such
information or representation must not be relied upon as having been authorized
by the Company or any Underwriter. This Prospectus does not constitute an offer
to sell, or a solicitation of an offer to buy, the Common Stock in any
jurisdiction to any person to whom it is unlawful to make such offer or
solicitation.
 
No action has been or will be taken in any jurisdiction by the Company or by
any Underwriter that would permit a public offering of the Common Stock or
possession or distribution of this Prospectus in any jurisdiction where action
for that purpose is required, other than in the United States. Persons into
whose possession this Prospectus comes are required by the Company and the
Underwriters to inform themselves about and to observe any restrictions as to
the Offering of the Common Stock and the distribution of this Prospectus.
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                         PAGE
<S>                                      <C>
Prospectus Summary......................   3
Risk Factors............................   6
Use of Proceeds.........................  12
Dividend Policy.........................  13
Capitalization..........................  13
Dilution................................  14
Selected Consolidated Financial Data....  15
Management's Discussion and Analysis of
 Financial Condition and Results of
 Operations.............................  16
</TABLE>
<TABLE>
<CAPTION>
                                   PAGE
<S>                                <C>
Business..........................  21
Management........................  39
Certain Transactions..............  48
Principal Stockholders............  50
Description of Capital Stock......  52
Shares Eligible for Future Sale...  54
Underwriting......................  55
Legal Matters.....................  56
Experts...........................  56
Additional Information............  56
Index to Financial Statements..... F-1
</TABLE>
 
UNTIL OCTOBER 22, 1996 (25 DAYS AFTER THE DATE OF THIS PROSPECTUS), ALL DEALERS
EFFECTING TRANSACTIONS IN THE COMMON STOCK, WHETHER OR NOT PARTICIPATING IN
THIS DISTRIBUTION, MAY BE REQUIRED TO DELIVER A PROSPECTUS. THIS IS IN ADDITION
TO THE OBLIGATIONS OF DEALERS TO DELIVER A PROSPECTUS WHEN ACTING AS
UNDERWRITERS AND WITH RESPECT TO THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS.
 
Prior to the Offering, the Company has not been subject to the reporting
requirements of the Securities Exchange Act of 1934 (the "Exchange Act"). The
Company intends to furnish stockholders with annual reports containing
consolidated financial statements audited by its independent auditors and such
other periodic reports as the Company may determine to be appropriate or as may
be required by law.
 
IN CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE COMMON STOCK
AT A LEVEL ABOVE THAT WHICH MIGHT OTHERWISE PREVAIL IN THE OPEN MARKET. SUCH
TRANSACTIONS MAY BE EFFECTED ON THE NASDAQ NATIONAL MARKET, IN THE OVER-THE-
COUNTER MARKET OR OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE
DISCONTINUED AT ANY TIME.
 
DURING THIS OFFERING, CERTAIN PERSONS AFFILIATED WITH PERSONS PARTICIPATING IN
THE DISTRIBUTION MAY ENGAGE IN TRANSACTIONS FOR THEIR OWN ACCOUNTS OR FOR THE
ACCOUNTS OF OTHERS IN COMMON STOCK OF THE COMPANY PURSUANT TO EXEMPTIONS FROM
RULES 10B-6, 10B-7, AND 10B-8 UNDER THE SECURITIES EXCHANGE ACT OF 1934.
 
The product names Simon Nitinol Filter(R), SNF(R) and CardioSeal(TM) and the
Company's logo are trademarks of the Company. All other brand names or
trademarks appearing in this Prospectus are the property of their respective
holders.
 
 
                                       2
<PAGE>
 
                   EDGAR DESCRIPTION OF FRONT INSIDE COVER


Diagrams depicting the following:

        1.      The Company's CardioSeal Septal Occluder and its placement in 
                the human body;
                

        2.      Deployment of the Company's Simon Nitinol Filter and its 
                placement in the human body; and

        3.      The Company's Hex-cell Stent and its deployment and placement in
                the human body.

<PAGE>
 
                               PROSPECTUS SUMMARY
 
The following summary is qualified in its entirety by, and should be read in
conjunction with, the more detailed information and the Consolidated Financial
Statements and the Notes thereto included elsewhere in this Prospectus. Unless
otherwise noted herein, all information contained in this Prospectus (i)
reflects a 1 for 1.9 reverse stock split effective as of July 9, 1996, (ii)
reflects the conversion of all outstanding Convertible Preferred Stock of the
Company into 1,993,212 shares of Common Stock and 37,871 shares of Redeemable
Preferred Stock of the Company upon the closing of the Offering (the
"Conversion") and the immediate application of a portion of the net proceeds of
the Offering to redeem all such shares of Redeemable Preferred Stock (the
"Redemption"), and (iii) assumes no exercise of the Underwriters' over-
allotment option.
 
                                  THE COMPANY
 
Nitinol Medical Technologies, Inc. designs, develops, and markets innovative
medical devices that utilize advanced materials and are delivered by minimally
invasive procedures. The Company's products are designed to offer alternative
approaches to existing complex treatments, thereby reducing patient trauma,
shortening procedure, hospitalization and recovery times, and lowering overall
treatment costs. The Company's patented medical devices include self-expanding
stents, vena cava filters and septal repair devices. At this time, the
Company's stents are in European clinical trials for certain indications, its
vena cava filters are marketed in the United States and abroad, and the Company
is completing the development of its septal repair device.
 
NMT has developed an expertise in precisely engineering nitinol and other
advanced materials for a variety of innovative medical device applications.
Nitinol is a nickel-titanium alloy that exhibits unique superelastic and
thermal shape-memory characteristics which enable the Company's nitinol-based
medical devices to transform into their intended shape once deployed into the
body. The Company has developed capabilities in advanced device fabrication,
materials characterization, manufacturing and process control and sophisticated
in vitro testing resulting in highly efficient and reliable manufacturing
processes.
 
The Company has established arrangements with Boston Scientific Corporation
("Boston Scientific") and C. R. Bard, Inc. ("Bard"), worldwide leaders in sales
of minimally invasive medical devices, for the distribution, sale and marketing
of its stents and its nitinol vena cava filter, respectively.
 
                               BUSINESS STRATEGY
 
The Company's strategy is to develop and commercialize a broad range of
advanced medical devices for minimally invasive applications to address unmet
medical needs by (i) designing and developing new products by leveraging its
core technologies to precisely engineer nitinol and other advanced materials,
(ii) continuing to market products with more extensive distribution
requirements through collaborations with established market leaders, (iii)
creating direct marketing and distribution capabilities for products, such as
the septal repair device, with smaller and more easily accessible user groups,
(iv) developing commercial scale manufacturing facilities to become a fully-
integrated medical device company, and (v) seeking licensing and acquisition
opportunities that will complement the Company's business and strengthen its
competitive position.
 
                                    PRODUCTS
 
Stents. NMT's patented self-expanding nitinol stents are designed to hold open
arteries, veins and other passageways of the body that have closed or become
obstructed as a result of aging, disease or trauma. The Company's stents are
placed in the body using catheter-based delivery systems. Once deployed, they
exert radial force against the walls of passageways to enable such passageways
to remain open and functional. NMT's proprietary stents can be manufactured in
a variety of sizes, shapes and flexibilities and with varying radial force
characteristics to treat a number of specific medical indications. Stents have
emerged as one of the fastest growing segments of the medical device market and
are increasingly being used as adjuncts or alternatives to a variety of medical
procedures. From its infancy in 1990, the stent market has grown to estimated
worldwide sales of $500 million in 1995, with continued growth expected. In
November 1994, the Company entered into an exclusive license agreement with
Boston Scientific to further develop, manufacture, market and distribute
 
                                       3
<PAGE>
 
NMT's stents worldwide. Boston Scientific is currently conducting clinical
trials in Europe for peripheral vascular stenting and peripheral vascular stent
grafting applications. The Company has been advised by Boston Scientific that
it intends to commence marketing of the Company's peripheral vascular stents in
Europe during 1996 and that it intends to seek Food and Drug Administration
("FDA") approval for an Investigational Device Exemption ("IDE") to permit the
commencement of United States clinical trials for peripheral vascular stenting
in the near future.
 
Vena Cava Filters. The Company's patented Simon Nitinol Filter ("SNF") is a
nitinol vena cava filter designed to prevent pulmonary embolism (a blood clot
lodged in the vessels supplying blood to the lungs), a condition which results
in approximately 125,000 to 150,000 deaths annually in the United States. Vena
cava filters are generally used in cases where drug therapy has failed or is
contraindicated. The Company's vena cava filter is implanted using the
Company's patented, catheter-based delivery systems from veins in the leg or
neck. Additionally, the SNF is the only currently available vena cava filter
which can be implanted from veins in the arm. In 1990, the Company obtained FDA
clearance to market the SNF in the United States. The SNF has been distributed
in the United States and certain other countries by the Bard Radiology Division
of Bard ("Bard Radiology") since 1992. In 1996, Bard International, Inc. ("Bard
International") began distributing the SNF outside the United States.
 
Septal Repair Devices. The Company is currently completing the development of
the CardioSeal Septal Occluder, an innovative, patented device for the
minimally invasive repair of defects in the septal wall of the heart, commonly
known as "holes in the heart." These defects, which occur primarily in
children, presently are treated by open heart surgery. The Company believes
that the CardioSeal Septal Occluder may be suitable for use in approximately
55,000 patient implants annually for congenital heart defects, as well as for
approximately 145,000 adult patients annually with Patent Foramen Ovale,
another septal defect which may contribute to embolic stroke. The septal repair
device was originally developed by Bard in collaboration with Children's
Hospital of Boston. NMT acquired the rights to develop and commercialize the
septal repair device in February 1996. The Company believes that the clinical
utility of the septal repair device was demonstrated with an earlier version of
the device that was evaluated in over 700 patients in clinical trials conducted
between 1989 and 1991. Children's Hospital of Boston is conducting clinical
trials of the current version of the septal repair device under an IDE
permitting implantation of such devices in patients at high risk for surgery.
In August 1996, the Company received conditional approval of its IDE
application from the FDA to conduct multi-center clinical trials of the
CardioSeal Septal Occluder in the United States. NMT intends to begin clinical
trials for the CardioSeal Septal Occluder in the United States, Canada and
Europe in late 1996.
 
The Company's principal executive offices are located at 263 Summer Street,
Boston, MA 02210, and its telephone number is (617) 737-0930.
 
                                  RISK FACTORS
 
The purchase of Common Stock offered hereby is speculative and involves
substantial risk, including risks related to the Company's limited
commercialization, manufacturing and marketing experience, the Company's
dependence upon collaborators and its expected near-term losses; and
uncertainties as to product development, market acceptance, competition,
technological change and governmental regulation. See "Risk Factors."
 
                                  THE OFFERING
 
The offering of 3,000,000 shares of Common Stock initially being offered is re-
ferred to herein as the "Offering."
 
COMMON STOCK OFFERED....................3,000,000 shares
 
COMMON STOCK OUTSTANDING AFTER THE      9,285,922 shares
 OFFERING(1)............................
 
USE OF PROCEEDS.........................Redemption of the Redeemable Preferred
                                        Stock and funding of research,
                                        development, clinical trials and
                                        regulatory matters, leasehold
                                        improvements and equipment lease
                                        financing obligations, potential
                                        licenses and acquisitions of
                                        technologies or products that
                                        complement NMT's business and for
                                        working capital and other general
                                        corporate purposes.
 
NASDAQ NATIONAL MARKET SYMBOL..........."NMTI"
- -------
(1)Excludes an aggregate of 2,001,027 shares of Common Stock issuable pursuant
to options and warrants outstanding as of August 31, 1996. See
"Capitalization," "Management--Stock Option Plans" and "Description of Capital
Stock."
 
                                       4
<PAGE>
 
                   SUMMARY CONSOLIDATED FINANCIAL INFORMATION
 
The following table sets forth summary consolidated financial data derived from
the Consolidated Financial Statements of the Company. The data should be read
in conjunction with the Consolidated Financial Statements and the Notes thereto
and other financial information included elsewhere in this Prospectus.
 
                       --------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                                       SIX MONTHS
                                                     YEAR ENDED DECEMBER 31,                         ENDED JUNE 30,
                                            1991        1992        1993        1994        1995        1995        1996
                                     -----------  ----------  ----------  ----------  ----------  ----------  ----------
                                     (UNAUDITED)                                                       (UNAUDITED)
In thousands, except per share data
<S>                                  <C>          <C>         <C>         <C>         <C>         <C>         <C>
 
STATEMENT OF OPERATIONS DA-
 TA:
Revenues:
 Product sales..............          $    1,292  $    2,073  $    2,003  $    1,837  $    2,716  $    1,303  $    1,999
 License fees...............                  --          --          --         773         625          --         625
 Product development........                  --          --          --          38         492         269          79
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
                                           1,292       2,073       2,003       2,647       3,833       1,572       2,703
Expenses:
 Cost of product sales......                 265         497         655         812       1,264         546         924
 Research and development...                 173         210         272         555         871         366       1,163
 General and administrative.                 410         536         468         770         871         279         940
 Selling and marketing......                 413         454         285         182         169          65         103
 In-process research and
  development(1)............                  --          --          --          --          --          --       1,111
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
                                           1,261       1,697       1,680       2,319       3,175       1,256       4,241
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
Income (loss) from opera-
 tions......................                  31         376         323         328         658         316      (1,538)
Interest income (expense),
 net........................                (180)       (136)        (62)        (39)        (29)        (11)        101
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
Income (loss) before
 provision for income taxes.                (149)        240         261         289         628         305      (1,437)
Provision for income tax-
 es(2)......................                  --          --          --          --          44          --          --
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
Net income (loss)...........          $     (149) $      240  $      261  $      289  $      584  $      305  $   (1,437)
                                      ==========  ==========  ==========  ==========  ==========  ==========  ==========
Net income (loss) per common
 and common equivalent
 share(3)...................          $     (.02) $      .04  $      .04  $      .04  $      .09  $      .05  $     (.22)
                                      ==========  ==========  ==========  ==========  ==========  ==========  ==========
Weighted average common and
 common equivalent shares
 outstanding(3).............               6,143       6,441       6,415       6,593       6,722       6,722       6,592
                                      ==========  ==========  ==========  ==========  ==========  ==========  ==========
Cash dividends declared
 per common share(4)........          $      --   $      --   $      --   $      .13  $      .03  $      --   $      --
                                      ==========  ==========  ==========  ==========  ==========  ==========  ==========
</TABLE>
 
                                                          ---------------------
<TABLE>
<CAPTION>
                                                         AT JUNE 30, 1996
                                                                   PRO FORMA
                                                    PRO FORMA(5) AS ADJUSTED(6)
                                                    ------------ --------------
                                                            (UNAUDITED)
In thousands
<S>                                                 <C>          <C>
BALANCE SHEET DATA:
Cash and cash equivalents..........................       $5,718        $31,208
Working capital....................................        5,309         30,799
Total assets.......................................        7,988         33,478
Long term obligations..............................           29             29
Preferred stock redemption liability...............        4,326            --
Stockholders' equity...............................        2,029         31,845
</TABLE>
 
- -------
(1) Relates to a write-off of in-process research and development incurred in
connection with the Company's acquisition of the septal repair device
technology. See Note 3 of Notes to the Consolidated Financial Statements.
(2) In the periods prior to October 19, 1995 the Company elected to be taxed as
an "S" corporation for income tax purposes. Accordingly, there was no provision
for income taxes in these periods. See Note 4 of Notes to the Consolidated
Financial Statements.
(3) Computed on the basis described in Note 2(j) of Notes to the Consolidated
Financial Statements.
(4) Computed based on the actual number of common shares outstanding at the
time the dividend was declared. In the periods prior to October 19, 1995 the
Company elected to be taxed as an "S" corporation for income tax purposes.
(5) The pro forma balance sheet data gives effect to the Conversion.
(6) Adjusted to reflect the sale of 3,000,000 shares of Common Stock offered
hereby (at an initial public offering price of $11.00 per share) and receipt by
the Company of the estimated net proceeds therefrom, and the application of a
portion of such proceeds to fund the Redemption. See "Use of Proceeds" and
"Capitalization."
 
 
                                       5
<PAGE>
 
                                  RISK FACTORS
 
In addition to the other information in this Prospectus, the following factors
should be considered carefully by prospective investors in evaluating the
Company and its business before purchasing shares of Common Stock offered
hereby.
 
LIMITED COMMERCIALIZATION; UNCERTAINTIES OF PRODUCT DEVELOPMENT AND MARKET
ACCEPTANCE
 
The Company currently markets only one product, the Simon Nitinol Filter. The
Company's stents and CardioSeal Septal Occluder may require substantial further
investment in research, product development, preclinical and clinical testing
and governmental regulatory approvals prior to being marketed and sold in the
United States and other countries. The Company's success will depend, in part,
on its ability, either by itself or in collaboration with others, to complete
such product development efforts, obtain such regulatory approvals, establish
manufacturing and marketing programs for such proposed products and gain market
acceptance.
 
The Company's product development efforts are subject to the risks inherent in
the development of products based on innovative technologies. These risks
include the possibilities that the Company's technologies or any or all of its
products will be found to be ineffective or unsafe, or will otherwise fail to
receive necessary regulatory approvals; that the products, if safe and
effective, will be difficult to manufacture on a large scale or be uneconomical
to market; that the proprietary rights of third parties will interfere with the
Company's product development; or that third parties will market superior or
equivalent products which achieve greater market acceptance. Furthermore, there
can be no assurance that the Company or its collaborators will conduct their
product development efforts within the time frames currently anticipated or
that such efforts will be completed successfully. See "Business--Products."
 
There can be no assurance that the Company's stents, septal repair devices, or
any other products developed by the Company will achieve market acceptance. The
degree of market acceptance for the Company's products will depend upon a
number of factors, including the receipt and timing of regulatory approvals,
the establishment and demonstration in the medical community of the clinical
safety, efficacy and cost-effectiveness of the Company's products and their
advantages over existing technologies. Additionally, certain of the medical
indications that can be treated by the Company's devices can also be treated by
surgery, drugs or other medical devices. Many alternative treatments currently
are widely accepted in the medical community and have a long history of use.
There can be no assurance that the Company's devices and procedures will be
able to replace such established treatments or that physicians or the medical
community in general will accept and utilize the Company's devices or any other
medical products that may be developed by the Company. Long-term market
acceptance of NMT's products will depend, in part, on the capabilities and
operating features of the Company's products as compared to other available
products. Failure of the Company's products to gain market acceptance would
have a material adverse effect on the Company's business, financial condition
and results of operations. See "--Intense Competition; Rapid Technological
Change" and "Business--Products."
 
DEPENDENCE UPON COLLABORATORS
 
The Company has entered into distribution agreements with Bard Radiology and
Bard International granting them exclusive distribution rights to the Company's
SNF, and a license agreement with Boston Scientific granting Boston Scientific
exclusive worldwide rights to develop, manufacture, market and distribute the
Company's stent technology and products which incorporate such technology.
Although Bard Radiology and Bard International have agreed not to sell
competing filters, Boston Scientific is not prohibited from selling other
stents and, in fact, manufactures and licenses from others a variety of stents
that may compete with the Company's stents. Boston Scientific may choose to
emphasize such other stents in its developmental and marketing efforts. See "--
Intense Competition; Rapid Technological Change."
 
The Company's future product development and marketing depends on the success
of these arrangements and the ability to renew such arrangements. There can be
no assurance that such arrangements will be renewed or that the Company's
existing relationships with Bard Radiology, Bard International or Boston
Scientific will continue in their current form. The Company's business could be
materially adversely affected if its arrangements with Bard Radiology, Bard
International or Boston Scientific prove unsuccessful or if such companies
terminate their arrangements with the Company, negotiate lower prices, sell
additional competing products, whether manufactured by themselves or others, or
otherwise alter the nature of their relationships with the Company. The amount
and timing of resources to be devoted by the Company's existing and future
collaborators to performing their contractual responsibilities are not
 
                                       6
<PAGE>
 
within the control of the Company. In addition, there can be no assurance that
such collaborators will perform their obligations as expected or that the
Company will derive any additional revenue from such arrangements. There also
can be no assurance that the Company's collaborators will not pursue existing
or alternative technologies in preference to products being developed in
collaboration with the Company. There can be no assurance that the Company will
be able to negotiate additional collaborative arrangements in the future on
acceptable terms, if at all, or that such collaborative arrangements will be
successful. See "Business--Strategy," "Business--Products" and "Business--
Agreements with Boston Scientific and Bard."
 
INTENSE COMPETITION; RAPID TECHNOLOGICAL CHANGE
 
The medical device industry is characterized by rapidly evolving technology and
intense competition. Other companies in the medical device industry are
currently marketing products that compete with the Company's devices and may be
developing, or could in the future develop, additional products that are
competitive with the Company's. Many of the Company's competitors have
substantially greater capital resources, greater research and development,
manufacturing and marketing resources and experience and greater name
recognition than the Company. There can be no assurance that the Company will
be able to compete against such competitors and potential competitors in terms
of research and development, manufacturing, marketing and sales. Certain of the
Company's competitors, including Johnson & Johnson, Inc., currently market
stents, and Boston Scientific, which has entered into an exclusive license
agreement with the Company relating to the Company's stent technology,
distributes competing stents, competes with the Company in the vena cava filter
market and has substantially greater sales than the Company. The Company
believes that other companies are actively developing competitive septal repair
devices. Such companies may succeed in obtaining regulatory approvals and
commercializing their septal repair devices sooner than the Company. There can
be no assurance that the Company's competitors will not succeed in developing
or marketing technologies and products that are more effective than those
developed or marketed by the Company or that would render the Company's
technology and products obsolete or noncompetitive. Additionally, new surgical
procedures and medications could be developed that replace or reduce the
importance of current or future procedures that use the Company's products.
Accordingly, the Company's success will depend in part on its ability to
respond quickly to medical and technological changes through the development
and introduction of new products. Product development involves a high degree of
risk and there can be no assurance that the Company's new product development
efforts will result in any commercially successful products. Additionally, in
many cases the medical indications that can be treated by the Company's devices
can also be treated by surgery and drugs as well as other medical devices. See
"Business--Products."
 
EXPECTED NEAR-TERM LOSSES
 
The Company expects operating losses to continue at least through early 1997 as
it continues to expend substantial resources to complete development of the
Company's products, seek regulatory clearances or approvals, build its
marketing, sales and manufacturing organizations and conduct further research
and development. There can be no assurance that the Company's products under
development will ever gain commercial acceptance, generate revenues or achieve
profitability or that the Company will resume profitability. See "Management's
Discussion and Analysis of Financial Condition and Results of Operations."
 
LIMITED MANUFACTURING HISTORY; DEPENDENCE ON THIRD PARTY MANUFACTURERS
 
The Company currently uses third parties to manufacture and distribute the SNF
and, pursuant to its exclusive license agreement, will use Boston Scientific to
manufacture and distribute its stents. The Company intends to continue to use
third parties to manufacture and distribute such products and certain other
products which the Company may seek to develop.
 
If the Company should encounter delays or difficulties with third party
manufacturers in producing, packaging or distributing its proposed products,
market introduction and subsequent sales of such products would be adversely
affected and the Company may have to seek alternative sources of supply. No
assurance can be made that the Company will be able to enter into alternative
supply arrangements at commercially acceptable rates, if at all. Moreover,
contract manufacturers that the Company may use must adhere to current Good
Manufacturing Practice ("GMP") regulations enforced by the FDA. If the Company
is unable to obtain or retain third party manufacturers on commercially
acceptable terms, it may not be able to commercialize medical products as
planned. The Company's dependence upon third parties for the manufacture of
medical products may materially adversely affect the Company's profit margins
and its ability to develop and distribute products on a timely and competitive
basis.
 
                                       7
<PAGE>
 
The Company plans to manufacture the CardioSeal Septal Occluder itself and, for
such purpose, is currently constructing its own manufacturing facility. The
Company has had no previous experience in the scale-up or manufacture of
medical products. The Company's manufacturing facility will be subject to GMP,
ISO 9000 and other regulatory requirements, will be subject to risks regarding
delays or difficulties encountered in manufacturing any such medical products
and will require a substantial investment of capital. There can be no assurance
that the Company will be able to manufacture any such products successfully or
in a cost-effective manner or that the Company can achieve and maintain
compliance with GMP, ISO 9000 and other regulatory requirements. See
"Business--Products" and "Business--Government Regulation."
 
LIMITED MARKETING AND SALES EXPERIENCE
 
Although the Company has limited internal marketing and sales resources and
personnel, and currently relies primarily on third parties to market and sell
its products, the Company plans to market the CardioSeal Septal Occluder
directly, if and when it receives the required regulatory approvals. In order
to market the CardioSeal Septal Occluder and any other products that it may
develop, the Company will have to develop a marketing and sales organization
with technical expertise and distribution capabilities. The development of such
an organization will require significant expenditures, management resources and
time. There can be no assurance that the Company will be able to develop such a
marketing and sales organization. See "Business--Products."
 
DEPENDENCE ON PATENTS AND PROPRIETARY TECHNOLOGY
 
The Company's success will depend, in part, on its ability to obtain patents,
maintain trade secret protection and operate without infringing on the
proprietary rights of third parties. The validity and breadth of claims covered
in medical technology patents involve complex legal and factual questions and,
therefore, may be highly uncertain. No assurance can be given that any pending
patent applications or any future patent application will result in issued
patents, the scope of any patent protection will exclude competitors or provide
competitive advantages to the Company, any of the Company's patents will be
held valid if subsequently challenged or others will not claim rights in or
ownership of the patents and other proprietary rights held by the Company.
Furthermore, there can be no assurances that others have not or will not
develop similar products, duplicate any of the Company's products or design
around any patents issued or that may be issued in the future to the Company or
its licensors. In addition, whether or not patents are issued to the Company or
its licensors, others may hold or receive patents which contain claims having a
scope that covers products developed by the Company.
 
Moreover, there can be no assurances that patents issued to or licensed by or
to the Company will not be challenged, invalidated or circumvented or that the
rights thereunder will provide any competitive advantage. The Company could
incur substantial costs in defending any patent infringement suits or in
asserting any patent rights, including those granted by third parties. In
addition, the Company may be required to obtain licenses to patents or
proprietary rights from third parties. There can be no assurance that such
licenses will be available on acceptable terms if at all. If the Company does
not obtain required licenses, it could encounter delays in product development
or find that the development, manufacture or sale of products requiring such
licenses could be foreclosed. See "Business--Patents and Proprietary Rights"
and "Business--Licensed Technology; Royalty Obligations."
 
The Company also relies on unpatented proprietary technology, trade secrets and
know-how and no assurance can be given that others will not independently
develop substantially equivalent proprietary information, techniques or
processes, that such technology or know-how will not be disclosed or that the
Company can meaningfully protect its rights to such unpatented proprietary
technology, trade secrets, or know-how. Although the Company has entered into
non-disclosure agreements with its employees and consultants, there can be no
assurance that such non-disclosure agreements will provide adequate protection
for the Company's trade secrets or other proprietary know-how.
 
GOVERNMENT REGULATION; PRODUCT APPROVALS UNCERTAIN
 
The manufacture and sale of medical devices intended for commercial
distribution are subject to extensive governmental regulations in the United
States. Medical devices are regulated in the United States by the FDA under the
Federal Food, Drug, and Cosmetic Act (the "FDC Act") and generally require pre-
market clearance or pre-market approval prior to commercial distribution. In
addition, certain material changes or modifications to medical devices also are
subject to FDA review and clearance or approval. Pursuant to the FDC Act, the
FDA regulates the research, testing, manufacture, safety, labeling, storage,
record keeping, advertising, distribution and production of medical devices in
the United States. Noncompliance with applicable requirements can result in
failure of the government to
 
                                       8
<PAGE>
 
grant pre-market clearance or approval for devices, withdrawal of approvals,
total or partial suspension of production, fines, injunctions, civil penalties,
recall or seizure of products, and criminal prosecution. The FDA also has the
authority to request repair, replacement or refund of the cost of any device
manufactured or distributed by the Company.
 
Generally, before a new device can be introduced into the market in the United
States, the manufacturer must obtain FDA clearance of a pre-market notification
("510(k) notification") or approval of a PMA application. If a medical device
manufacturer can establish that a device is "substantially equivalent" to a
legally marketed device, the manufacturer may seek clearance from the FDA to
market the device by filing a 510(k) notification. If a manufacturer or
distributor of medical devices cannot establish that a proposed device is
substantially equivalent to a legally marketed device, the manufacturer must
seek pre-market approval of the proposed device through submission of a PMA
application.
 
The PMA approval process is expensive, uncertain and lengthy. A number of
devices for which pre-market approval has been sought by other companies have
never been approved for marketing. The review time is often significantly
extended by the FDA, which may require more information or clarification of
information already provided in the submission. In addition, the FDA will
inspect the manufacturing facility to ensure compliance with the GMP
regulations for medical devices prior to approval of the PMA application. If
granted, the approval may include significant limitations on the indicated uses
for which a product may be marketed.
 
Any products manufactured or distributed by the Company are subject to
continuing regulation by the FDA including record keeping requirements,
reporting of adverse experience with the use of the device, postmarket
surveillance, postmarket registry and other actions deemed necessary by the
FDA. The FDA's regulations require agency approval of a PMA supplement for
certain changes if they affect the safety and effectiveness of the device,
including, but not limited to, new indications for use; labeling changes; the
use of a different facility to manufacture, process, or package the device. For
any devices that are cleared through the 510(k) process, modifications or
enhancements that could significantly affect safety or effectiveness, or that
constitute a major change in the intended use of the device, will require new
510(k) submissions. There can be no assurance that the Company will be able to
obtain necessary regulatory approvals or clearances for its products on a
timely basis or at all, and delays in receipt of, or failure to receive, such
approvals or clearances, the loss of previously received approvals or
clearances, limitations on intended use imposed as a condition of such
approvals or clearances, or failure to comply with existing or future
regulatory requirements could have a material adverse effect on the Company's
business, financial conditions and results of operations.
 
The Company's first product, the SNF, underwent significant clinical
investigation under an IDE and received 510(k) clearance in 1990. Subsequent
improvements and modifications to the SNF have also received 510(k) clearance
from the FDA. There can be no assurance that future modifications of the device
will obtain such clearance. The 510(k) clearances for the SNF were based on
substantial equivalence of the device to other cardiovascular intravascular
filters, which are "preamendments Class III devices." It is likely that the FDA
will call for PMAs for such preamendments Class III devices, including the SNF,
and that the Company will be required to have a PMA for the SNF accepted for
filing by the FDA within 90 days after the date that the FDA calls for PMAs.
There can be no assurance that the Company will be able to file a PMA within
the prescribed time period or that any data and information submitted in a PMA
will be adequate to support approval of the device. If the FDA were to require
the Company to conduct a new clinical study to support the safety and efficacy
of the SNF, the preparation of the PMA would take substantially longer than 90
days. Failure of the Company to submit a PMA and have it accepted for filing by
the FDA within the required time frame could result in the Company being
required to cease commercial distribution of the SNF. In addition the Company
may not be permitted to continue commercial distribution of the SNF pending the
FDA's review of the PMA. The Company's failure to have a PMA accepted for
filing, or a failure to obtain FDA approval of the PMA, would result in the
Company being required to cease commercial distribution of the SNF which would
have a material adverse effect on the Company's business, financial condition
and results of operations.
 
Sales of medical device products outside the United States are subject to
foreign regulatory requirements that vary widely from country to country. The
time required to obtain approvals required by foreign countries may be longer
or shorter than that required for FDA approval, and requirements for licensing
may differ from FDA requirements. Failure to comply with foreign regulatory
requirements also could have a material adverse effect on the Company's
business, financial condition and results of operations. See "Business--
Government Regulation."
 
                                       9
<PAGE>
 
UNCERTAIN AVAILABILITY OF THIRD PARTY REIMBURSEMENT; POSSIBLE HEALTH CARE RE-
FORMS
 
In the United States, suppliers of health care products and services are
greatly affected by Medicare, Medicaid and other government insurance programs,
as well as by private insurance reimbursement programs. Third party payers may
affect the pricing or relative attractiveness of the Company's products by
regulating the maximum amount of reimbursement provided for by such payers to
the physicians and clinics using the Company's devices, or any other products
that the Company may develop, or by taking the position that such reimbursement
is not available at all. The level of reimbursement by third party payers in
those states that do provide reimbursement varies considerably. Major third
party payers reimburse inpatient medical treatment, including all operating
costs and all furnished items or services, including devices such as the
Company's, at a prospectively fixed rate based on the diagnosis-related group
("DRG") that covers such treatment as established by the federal Health Care
Financing Administration. For interventional procedures, the fixed rate of
reimbursement is based on the procedure or procedures performed and is
unrelated to the specific devices used in such procedure. The amount of profit
realized by suppliers of health care services relating to the procedure may be
reduced by the use of the Company's devices. If a procedure is not covered by a
DRG, certain third party payers may deny reimbursement. Alternatively, a DRG
may be assigned that does not reflect the costs associated with the use of the
Company's devices, resulting in limited reimbursement. If, for any reason, the
Company's products were not to be reimbursed by third party payers, the
Company's ability to sell its products may be materially adversely affected.
Mounting concerns about rising health care costs may cause more restrictive
coverage and reimbursement policies to be implemented in the future. Several
states and the federal government are investigating a variety of alternatives
to reform the health care delivery system and further reduce and control health
care spending. These reform efforts include proposals to limit spending on
health care items and services, limit coverage for new technology and limit or
control directly the price health care providers and drug and device
manufacturers may charge for their services and products. In the international
market, reimbursement by private third party medical insurance providers, and
governmental insurers and providers varies from country to country. In certain
countries, the Company's ability to achieve significant market penetration may
depend upon the availability of third party governmental reimbursement. See
"Business--Government Regulation."
 
UNCERTAINTIES OF SUCCESSFUL REDESIGN OF THE SEPTAL REPAIR DEVICE
 
Between 1989 and 1991 Bard sponsored trials of an earlier version of the septal
repair device, known as the Clamshell. In 1991, Bard discovered fractures of
the stainless steel framework in certain of the devices implanted during such
clinical trials and, following such discovery, suspended its clinical trials
worldwide except for patients at high risk for surgery. It was determined that
the fractures were caused by metal fatigue resulting from higher than
anticipated forces acting on the Clamshell. Redesign efforts were initiated,
resulting in the design of the current version of the septal repair device.
Although the CardioSeal Septal Occluder has undergone in vitro testing, there
can be no assurance that such testing accurately simulates the actual forces in
the human body or that similar fractures will not occur with the CardioSeal
Septal Occluder. If such fractures occur, the Company's efforts to
commercialize the CardioSeal Septal Occluder may be significantly delayed and
the Company may be required to invest significant resources in further
designing and engineering the device or to discontinue its development efforts.
See "Business--Products."
 
PRODUCT LIABILITY RISKS; INSURANCE
 
The testing, marketing and sale of implantable devices and materials entail an
inherent risk that product liability claims will be asserted against the
Company or its third party distributors in the event that the use of the
Company's devices is alleged to have adverse effects on a patient. A product
liability claim or a product recall could have a material adverse effect on the
Company's business, financial condition and results of operations. Certain of
the Company's devices are designed to be used in life-threatening situations
where there is a high risk of serious injury or death. Although the Company
currently maintains limited product liability insurance coverage, there can be
no assurance that in the future the Company will be able to maintain such
coverage on acceptable terms or that current insurance or insurance
subsequently obtained will provide adequate coverage against any or all
potential claims. Furthermore there can be no assurance that the Company will
avoid significant product liability claims and the attendant adverse publicity.
Any product liability claim or other claim with respect to uninsured or
underinsured liabilities could have a material adverse effect on the Company's
business, financial condition, and result of operations. See "Business--Product
Liability and Insurance."
 
                                       10
<PAGE>
 
UNCERTAIN FUTURE CAPITAL REQUIREMENTS
 
The Company may require funds in addition to the net proceeds of the Offering
for its research and product development programs, preclinical and clinical
testing, operating expenses, regulatory processes and manufacturing and
marketing programs. The Company may seek such additional funding through public
or private financing or collaborative, licensing or other arrangements with
corporate partners. If additional funds are raised by issuing equity
securities, further dilution to existing stockholders will result and future
investors may be granted rights superior to those of existing stockholders;
debt financing, if available, may involve restrictive covenants. The Company's
capital requirements will depend on numerous factors, including the sales of
its products, the progress of its research and development programs, the
progress of preclinical and clinical testing, the time and cost involved in
obtaining regulatory approvals, the cost of filing, prosecuting, defending and
enforcing any patent claims and other intellectual property rights, competing
technological and market developments, developments and changes in the
Company's existing research, licensing and other relationships and the terms of
any new collaborative, licensing and other arrangements that the Company may
establish. See "Business--Licensed Technology; Royalty Obligations,"
"Management-Employment Agreements" and "Certain Transactions." The Company's
cash requirements will vary from those now planned and such variances may be
material.
 
There can be no assurance that additional financing will be available when
needed or, if available, will be available on acceptable or affordable terms.
Insufficient funds may prevent the Company from implementing its business
strategy or may require the Company to delay, scale back or eliminate certain
of its research and product development programs or to license to third parties
rights to commercialize products or technologies that the Company would
otherwise seek to develop itself. See "Management Discussion and Analysis of
Financial Condition and Results of Operations--Liquidity and Capital
Resources."
 
DEPENDENCE ON QUALIFIED PERSONNEL
 
There is intense competition for qualified personnel in the medical device
field, and there can be no assurance that the Company will be able to continue
to attract and retain qualified personnel necessary for the development of its
business. The loss of the services of existing personnel as well as the failure
to recruit additional qualified scientific, technical and managerial personnel
in a timely manner would be detrimental to the Company's anticipated growth and
expansion into areas and activities requiring additional expertise such as
marketing. The failure to attract and retain such personnel could adversely
affect the Company's business. See "Business--Employees" and "Management."
 
NO PRIOR PUBLIC MARKET; POTENTIAL VOLATILITY OF STOCK PRICE
 
Prior to the Offering, there has been no public market for the Company's Common
Stock and there can be no assurance that an active public market for the
Company's Common Stock will develop or be sustained in the future. The initial
public offering price of the Common Stock will be determined by negotiations
between the Company and the Underwriters. See "Underwriting" for a discussion
of the factors to be considered in determining the initial public offering
price. In addition, the market price of the Common Stock is likely to be highly
volatile as frequently occurs with publicly traded emerging growth companies
and medical device companies. Factors such as results of clinical trials,
announcements of technological innovations or new products by the Company or
its competitors, government regulatory action affecting the Company's proposed
products in either the United States or foreign countries, developments or
disputes concerning patent or proprietary rights and market conditions for
emerging growth and medical device companies in general, as well as period-to-
period fluctuations in the Company's financial results, could have a
significant impact on the market price of the Common Stock.
 
BROAD DISCRETION AS TO USE OF PROCEEDS
 
Approximately 38% of the estimated net proceeds of the Offering has been
allocated to working capital and other general corporate purposes and will be
used for such specific purposes as management may determine, including
potential license or acquisition arrangements with other companies. The Company
is currently evaluating certain potential license or acquisition opportunities;
however, the Company has no agreements, arrangements or understandings with any
third parties for any such licenses or acquisitions at this time. There can be
no assurance that the Company will enter into or consummate any such license or
acquisition or, if entered into, that any such arrangements will be successful.
Accordingly, management will have broad discretion with respect to the
expenditure of a substantial portion of the net proceeds of the Offering. See
"Use of Proceeds."
 
                                       11
<PAGE>
 
AVAILABILITY OF PREFERRED STOCK FOR ISSUANCE
 
In addition to its authorized shares of Common Stock, the Company's Amended and
Restated Certificate of Incorporation, as amended, authorizes the issuance of
up to 3,000,000 shares of undesignated preferred stock. Upon completion of the
Offering, no shares of preferred stock of the Company will be outstanding, and
the Company has no present intention to issue any shares of preferred stock.
However, because the rights and preferences of any series of preferred stock
may be set by the Board of Directors in its sole discretion, the rights and
preferences of any such preferred stock may be superior to those of the Common
Stock and thus may adversely affect the rights of the holders of Common Stock.
See "Description of Capital Stock--Preferred Stock."
 
POSSIBLE ADVERSE EFFECT OF SHARES ELIGIBLE FOR FUTURE SALES
 
Upon completion of the Offering, the Company's existing stockholders will
beneficially own an aggregate of 6,285,922 shares of Common Stock. Sales of
substantial amounts of Common Stock in the public market by such persons after
the Offering could adversely affect prevailing market prices for the Common
Stock. At August 31, 1996, 281,520 shares of Common Stock were issuable upon
exercise of outstanding warrants at a weighted average exercise price of $3.34
per share and 1,719,507 shares of Common Stock were issuable upon exercise of
outstanding stock options at a weighted average exercise price of $2.57 per
share. The Company, certain stockholders and directors and officers of the
Company have entered into lock-up agreements with the Underwriters agreeing not
to dispose of any shares of Common Stock, nor any securities convertible into
or exchangeable or exercisable for any such shares, without the prior written
consent of J.P. Morgan Securities Inc. for a period of 180 days after the date
of this Prospectus, subject to certain limited exceptions. After such 180-day
period, however, substantially all shares of Common Stock currently outstanding
will be eligible for sale in the public market pursuant to Rule 144 under the
Securities Act of 1933, as amended (the "Securities Act"), if the conditions to
that Rule have been met. The Company's current stockholders are also entitled
to certain rights with respect to the registration under the Securities Act of
shares held by them. See "Management," "Description of Capital Stock--
Registration Rights" and "Shares Eligible for Future Sale."
 
NO DIVIDENDS
 
The Company does not anticipate declaring or paying cash dividends in the
foreseeable future. The Company expects that any earnings which it may realize
will be retained for use in its business. See "Dividend Policy."
 
DILUTION
 
Investors purchasing shares of Common Stock in the Offering will incur
immediate dilution of $7.59 in the per share net tangible book value of their
Common Stock from the initial public offering price. The Company has granted to
officers, directors, certain principal stockholders and others numerous options
and warrants to purchase Common Stock at prices below the offering price.
Investors purchasing shares of Common Stock in the Offering will incur
additional dilution to the extent outstanding warrants and options are
exercised. See "Dilution," "Management--Options Granted Outside of the Plans"
and "Certain Transactions."
 
                                USE OF PROCEEDS
 
The net proceeds to the Company from the Offering are estimated to be
approximately $30.0 million ($34.6 million if the over-allotment option is
exercised in full), after deducting the underwriting discount and offering
expenses payable by the Company.
 
The Company will use approximately $4.5 million of the net proceeds for the
Redemption of the Company's Redeemable Preferred Stock, $.001 par value per
share ("Redeemable Preferred Stock"), including the payment of accrued
dividends. See "Certain Transactions." The Company anticipates that it will use
approximately $8.0 million of the net proceeds for research, development,
clinical trials and regulatory matters; approximately $3.0 million to develop
the Company's sales and marketing capabilities; and approximately $3.0 million
for leasehold improvements and payments under certain equipment lease financing
obligations to be incurred in connection with the Company's relocation to a new
manufacturing, laboratory and administrative facility. The Company intends to
use the balance of the net proceeds, approximately $11.5 million, for potential
licenses and acquisitions of technologies or products that complement the
business of the Company and for other general corporate purposes, including
working capital. As of the date of this Prospectus, the Company is evaluating
certain potential license or acquisition opportunities; however, the Company
has no agreements, arrangements or understandings with any third parties for
any such licenses or acquisitions. Pending such uses, the Company intends to
invest the net proceeds of the Offering in interest-bearing, investment grade
securities.
 
                                       12
<PAGE>
 
The foregoing represents the Company's best estimate of its allocation of the
net proceeds from the sale of the Common Stock offered hereby based upon the
current state of its business operations, its current plans and current
economic and industry conditions and is subject to reallocation among the
categories listed above or to new categories. The amounts actually expended for
each purpose may vary significantly depending upon numerous factors, including
the progress of the Company's clinical trials and actions relating to
regulatory matters, and the costs and timing of expansion of marketing, sales
and manufacturing activities, and hence the Company's management will retain
broad discretion in the allocation of a substantial portion of the net
proceeds. See "Risk Factors--Broad Discretion as to Use of Proceeds."
 
                                DIVIDEND POLICY
 
From the Company's inception through October 19, 1995, the Company was an "S"
corporation for federal and state income tax purposes. As such, the Company
generally was not subject to federal or state income taxes, but its income was
taxable to its stockholders. The Company declared and paid dividends in the
aggregate amount of $600,000 for such period.
 
The Company does not anticipate declaring or paying cash dividends in the
foreseeable future. The Company expects that any earnings which it may realize
will be retained for use in its business.
 
                                 CAPITALIZATION
 
The following table sets forth as of June 30, 1996 (i) the pro forma
capitalization of the Company which gives effect to the Conversion, and (ii)
the pro forma capitalization as adjusted to give effect to the sale of the
shares of Common Stock offered hereby at an initial public offering price of
$11.00 per share (after deducting the underwriting discount and offering
expenses payable by the Company) and the application of a portion of the net
proceeds therefrom for the Redemption. See "Use of Proceeds." This table should
be read in conjunction with "Management's Discussion and Analysis of Financial
Condition and Results of Operations" and the Consolidated Financial Statements
and the Notes thereto included elsewhere in this Prospectus.
 
                                                       ----------------------
<TABLE>
<S>                                                    <C>        <C>
                                                         AT JUNE 30, 1996
                                                                   PRO FORMA
                                                       PRO FORMA  AS ADJUSTED
                                                       ---------  -----------
Dollars in thousands
Current portion of long term obligations                  $  406      $   406
                                                       =========  ===========
Long term obligations                                         29           29
                                                       ---------  -----------
Preferred stock redemption liability                       4,326          --
                                                       ---------  -----------
Stockholders' Equity:
  Preferred Stock, $.001 par value; 3,000,000 shares
   authorized; none issued and outstanding pro forma
   and as adjusted                                           --           --
  Common Stock, $.001 par value; 30,000,000 shares
   authorized; 6,285,922 shares issued and outstanding
   pro forma; 9,285,922 shares pro forma as
   adjusted(1)                                                 6            9
  Additional paid-in capital                               4,308       34,121
  Accumulated deficit                                     (2,285)      (2,285)
                                                       ---------  -----------
    Total stockholders' equity                             2,029       31,845
                                                       ---------  -----------
    Total capitalization                                  $6,383      $31,874
                                                       =========  ===========
</TABLE>
- -------
(1) Excludes 1,982,910 shares of the Company's Common Stock reserved for issu-
ance pursuant to the exercise of options and warrants outstanding as of June
30, 1996 at a weighted average exercise price of $2.62 per share of which op-
tions and warrants to purchase 948,807 shares of Common Stock were then exer-
cisable.
 
                                       13
<PAGE>
 
                                    DILUTION
 
Dilution is the amount by which the initial public offering price paid by the
purchasers of the shares of Common Stock will exceed the net tangible book
value per share of Common Stock after the Offering. Net tangible book value per
share is determined at any date by subtracting the total liabilities of the
Company from the total book value of the tangible assets of the Company and
dividing the difference by the number of shares of Common Stock deemed to be
outstanding at such date.
 
The net tangible book value of the Company as of June 30, 1996 was $1,893,778
or $.30 per share pro forma after giving effect to the Conversion. After giving
effect to the sale of 3,000,000 shares of Common Stock offered by the Company
hereby at an initial public offering price of $11.00 per share and the
application of a portion of the estimated net proceeds therefrom for the
Redemption, the pro forma net tangible book value of the Company as of June 30,
1996 would have been $31,709,334 or $3.41 per share. This represents an
immediate increase in net tangible book value of $3.11 per share to existing
stockholders and an immediate dilution of $7.59 per share to new investors
purchasing the shares of Common Stock in the Offering. The following table
illustrates the dilution of a new investor's equity on a per share basis as of
June 30, 1996:
 
                                                                    -----------
<TABLE>
<S>                                                               <C>   <C>
Assumed initial public offering price per share of Common Stock         $ 11.00
  Pro forma net tangible book value per share of Common Stock be-
   fore the Offering                                              $ .30
  Increase in net tangible book value per share attributable to
   new investors                                                   3.11
                                                                  -----
Pro forma net tangible book value after the Offering (1)                   3.41
                                                                        -------
Dilution per share to new investors(1)                                  $  7.59
                                                                        =======
</TABLE>
- -------
(1) If the Underwriters' over-allotment option is exercised in full, the pro
forma net tangible book value after the Offering would be approximately $3.73
per share, resulting in dilution to new investors in the Offering of $7.27 per
share. See "Underwriting."
 
The following table sets forth, as of June 30, 1996, the difference between (i)
the number of shares of Common Stock purchased from the Company (including the
Common Stock to be issued upon the Conversion), the total consideration paid
and the average price per share paid by the existing stockholders for such
shares and (ii) the number of shares of Common Stock to be purchased by new
investors in the Offering from the Company, the total consideration to be paid
and the average price per share to be paid by them for such shares and (iii)
the percentage of shares purchased from the Company by new investors and the
percentage of the consideration paid to the Company for such shares by new
investors.
 
                                        ---------------------------------------
<TABLE>
<CAPTION>
                       SHARES PURCHASED   TOTAL CONSIDERATION
                                                               AVERAGE PRICE
                          NUMBER PERCENT       AMOUNT PERCENT      PER SHARE
                       --------- -------  ----------- -------  -------------
<S>                    <C>       <C>      <C>         <C>      <C>
Existing Stockholders  6,285,922    67.7% $ 4,528,481    12.1%        $  .72
New Investors          3,000,000    32.3   33,000,000    87.9          11.00
                       ---------  -----   -----------  -----
  Total                9,285,922  100.0%  $37,528,481   100.0%
                       =========  =====   ===========  =====
</TABLE>
 
At August 31, 1996, 281,520 shares of Common Stock were issuable upon exercise
of outstanding warrants at a weighted average exercise price of $3.34 per share
and 1,719,507 shares of Common Stock were issuable upon exercise of outstanding
stock options at a weighted average exercise price of $2.57 per share. To the
extent these warrants or options are exercised, there will be further dilution
to new investors. See "Capitalization," "Management--Stock Option Plans,"
"Management--Options Granted Outside of the Plans" and "Description of Capital
Stock."
 
                                       14
<PAGE>
 
                      SELECTED CONSOLIDATED FINANCIAL DATA

The following table sets forth selected consolidated financial data of the
Company. The selected consolidated financial data as of December 31, 1994 and
1995 and for the three years in the period ended December 31, 1995 are derived
from the Company's Consolidated Financial Statements, which have been audited
by Arthur Andersen LLP, independent public accountants and together with their
report thereon are included elsewhere in this Prospectus. The selected
consolidated financial data for the years ended December 31, 1991, 1992 and
1993 are derived from the Company's Consolidated Financial Statements which, in
the case of 1992 and 1993, have been audited by Arthur Andersen LLP. The
selected consolidated financial data as of June 30, 1996 and the six months
ended June 30, 1995 and 1996 are derived from the Company's unaudited
Consolidated Financial Statements included elsewhere in this Prospectus. In the
opinion of management, the unaudited Consolidated Financial Statements of the
Company have been prepared on the same basis as the audited Consolidated
Financial Statements and include all adjustments, consisting of normal
recurring adjustments, necessary for a fair presentation of the financial
position and the results of operations for these periods. Results for the six
months ended June 30, 1996 are not necessarily indicative of the results that
may be expected for the year ending December 31, 1996. The selected
consolidated financial data set forth below should be read in conjunction with
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" and the Consolidated Financial Statements and the Notes thereto
included elsewhere in this Prospectus.
 
                          -----------------------------------------------------
<TABLE>
<CAPTION>
                                                                                                       SIX MONTHS
                                                     YEAR ENDED DECEMBER 31,                         ENDED JUNE 30,
                                            1991        1992        1993        1994        1995        1995        1996
                                     -----------  ----------  ----------  ----------  ----------  ----------  ----------
                                     (UNAUDITED)                                                       (UNAUDITED)
In thousands, except per share data
<S>                                  <C>          <C>         <C>         <C>         <C>         <C>         <C>
 
STATEMENT OF OPERATIONS DA-
 TA:
Revenues:
 Product sales                        $    1,292  $    2,073  $    2,003  $    1,837  $    2,716  $    1,303  $    1,999
 License fees                                 --          --          --         773         625          --         625
 Product development                          --          --          --          38         492         269          79
                                       ---------- ----------  ----------  ----------  ----------  ----------   ----------
                                           1,292       2,073       2,003       2,647       3,833       1,572       2,703
Expenses:
 Cost of product sales                       265         497         655         812       1,264         546         924
 Research and development                    173         210         272         555         871         366       1,163
 General and administrative                  410         536         468         770         871         279         940
 Selling and marketing                       413         454         285         182         169          65         103
 In-process research and
  development(1)                              --          --          --          --          --          --       1,111
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
                                           1,261       1,697       1,680       2,319       3,175       1,256       4,241
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
Income(loss) from operations                  31         376         323         328         658         316      (1,538)
Interest income (expense),
 net                                        (180)       (136)        (62)        (39)        (29)        (11)        101
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
Income(loss) before
 provision for income taxes                 (149)        240         261         289         628         305      (1,437)
Provision for income tax-
 es(2)                                        --          --          --          --          44          --          --
                                      ----------  ----------  ----------  ----------  ----------  ----------  ----------
Net income(loss)                      $     (149) $      240  $      261  $      289  $      584  $      305  $   (1,437)
                                      ==========  ==========  ==========  ==========  ==========  ==========  ==========
Net income(loss) per common
 and common equivalent
 share(3)                             $     (.02) $      .04  $      .04  $      .04  $      .09  $      .05  $     (.22)
                                      ==========  ==========  ==========  ==========  ==========  ==========  ==========
Weighted average common and
 common equivalent shares
 outstanding(3)                            6,143       6,441       6,415       6,593       6,722       6,722       6,592
                                      ==========  ==========  ==========  ==========  ==========  ==========  ==========
Cash dividends declared per
 common share(4)............          $       --  $       --  $       --  $      .13  $      .03  $       --  $       --
                                      ==========  ==========  ==========  ==========  ==========  ==========  ==========
</TABLE>
 
                          -----------------------------------------------------
<TABLE>
<CAPTION>
                                         AT DECEMBER 31,                     AT JUNE 30,
                               1991      1992      1993      1994      1995         1996
                          ---------  --------  --------  --------  --------  -----------
                                                                             (UNAUDITED)
In thousands
<S>                       <C>        <C>       <C>       <C>       <C>       <C>         <C>
BALANCE SHEET DATA:
Cash and cash equiva-
 lents                    $      32  $    205  $    644  $    715  $    533    $   5,718
Working capital (defi-
 cit)                          (957)      415       512        68    (1,277)       5,309
Total assets                    419     1,207     1,152     1,253     1,661        7,988
Long-term obligations           825     2,141     1,957     1,690        --           29
Redemption value of pre-
 ferred stock                    --        --        --        --        --        4,326
Stockholders' equity
 (deficit)                   (1,697)   (1,457)   (1,190)   (1,331)     (844)       2,029
</TABLE>
 
- -------
 
(1) RELATES TO A WRITE-OFF OF IN-PROCESS RESEARCH AND DEVELOPMENT INCURRED IN 
CONNECTION WITH THE COMPANY'S ACQUISITION OF THE SEPTAL REPAIR DEVICE         
TECHNOLOGY. SEE NOTE 3 OF NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS.     
(2) IN THE PERIODS PRIOR TO OCTOBER 19, 1995 THE COMPANY ELECTED TO BE TAXED  
AS AN "S" CORPORATION FOR INCOME TAX PURPOSES. ACCORDINGLY, THERE WAS NO      
PROVISION FOR INCOME TAXES IN THESE PERIODS. SEE NOTE 4 OF NOTES TO THE       
CONSOLIDATED FINANCIAL STATEMENTS.                                            
(3) COMPUTED ON THE BASIS DESCRIBED IN NOTE 2(J) OF NOTES TO THE CONSOLIDATED 
FINANCIAL STATEMENTS.                                                         
(4) COMPUTED BASED ON THE ACTUAL NUMBER OF COMMON SHARES OUTSTANDING AT THE   
TIME THE DIVIDEND WAS DECLARED. IN THE PERIODS PRIOR TO OCTOBER 19, 1995 THE  
COMPANY ELECTED TO BE TAXED AS AN "S" CORPORATION FOR INCOME TAX PURPOSES.    
 
                                       15
<PAGE>
 
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
The following discussion of the financial condition and results of operations
of the Company should be read in conjunction with the Consolidated Financial
Statements and the Notes thereto included elsewhere in this Prospectus.
 
OVERVIEW
 
Since its inception in 1986, the Company has focused its efforts on the design,
development and commercialization of medical devices which are delivered by
minimally invasive procedures. The products developed or under development
include self-expanding stents, vena cava filters and septal repair devices.
 
The Company's initial product, a vena cava filter system, was given FDA
clearance in 1990. This product is distributed in the United States and certain
other countries by Bard Radiology and in other markets outside the United
States by Bard International. Both distributors are obligated to make annual
minimum purchases. The filter component of the current vena cava filter system
is manufactured by Lake Region Manufacturing Inc. ("Lake Region"). The Company
currently purchases its delivery systems for the vena cava filter under
purchase orders with third party suppliers. The vena cava filter is the only
product sold by the Company during the periods discussed below. The majority of
the Company's revenues, and all of its cost of product sales, are related to
the vena cava filter during such periods.
 
In November 1994, the Company entered into an agreement with Boston Scientific
pursuant to which Boston Scientific obtained exclusive worldwide rights to
develop, manufacture, market and distribute the Company's stent technology and
products which incorporate such technology. Under this license agreement,
Boston Scientific is responsible for performing clinical trials for stents
under development and for reimbursing the Company for stent development costs
incurred by the Company. These reimbursements are classified as product
development revenues in the Consolidated Statement of Operations. The Company
also receives license fees, including milestone payments, from Boston
Scientific under this license agreement. Upon commercialization, the Company
will receive royalties based upon product sales and certain manufacturing cost
reduction incentives from Boston Scientific under the license agreement. The
Company's revenues in the periods discussed below include such license fees and
reimbursements. Most of its costs associated with its stents are included in
research and development expenses.
 
In February 1996, the Company acquired, through the issuance of Common Stock,
the rights to develop and commercialize its septal repair device. The Company
has not yet realized any revenue related to its septal repair device. The
Company expects to manufacture this device itself which will result in
increased operating expenses as discussed below.
 
In the first half of 1996 the Company significantly increased the scope of its
operations. This included the addition of a new Chief Executive Officer, an
Executive Vice President and Chief Financial Officer and a President of the
Septal Repair Division, which was formed in February 1996. In addition, in
April 1996, the Company entered into a lease for a new manufacturing,
laboratory and administrative space which will increase the Company's annual
facility lease payments by approximately $400,000. The Company anticipates
taking full occupancy in September 1996 upon completion of construction of the
facility to the Company's specifications. The Company expects operating
expenses to continue to increase significantly as it enters into clinical
trials for the septal repair device, accelerates its other product development
programs and builds the infrastructure necessary to commercialize its
technologies.
 
The Company has agreed to make certain royalty payments to Children's Medical
Center Corporation based on net sales of the CardioSeal Septal Occluder. The
Company has also agreed to pay certain royalties to Morris Simon, M.D., the
Company's Scientific Director and co-founder, based on sales of products using
the technology invented by Dr. Simon relating to the SNF. In addition, pursuant
to the Company's employment agreements with Mr. Kleshinski and Dr. Harry,
respectively, the Company has agreed to pay certain royalties based on sales or
licenses of products where either Mr. Kleshinski or Dr. Harry, as the case may
be, was the sole or joint inventor. See "Management--Employment Agreements" and
Note 8(d) of Notes to the Consolidated Financial Statements.
 
 
                                       16
<PAGE>
 
RESULTS OF OPERATIONS
 
SIX MONTHS ENDED JUNE 30, 1996 COMPARED WITH SIX MONTHS ENDED JUNE 30, 1995
 
Revenues. Revenues for the six months ended June 30, 1996 increased to $2.7
million from $1.6 million for the six months ended June 30, 1995 (a 69%
increase). Product sales derived from the sale of vena cava filters increased
to $2.0 million for the six months ended June 30, 1996 from $1.3 million for
the six months ended June 30, 1996 (a 54% increase). The increase in product
sales was primarily due to increased unit sales of vena cava filters, which in
turn, was primarily due to the introduction of the straight-line delivery
system in November 1995, and the commencement of international distribution by
Bard International in January 1996. The Company recorded $625,000 in license
fees from Boston Scientific related to its stent technology in the six months
ended June 30, 1996, consisting of a $250,000 milestone payment and the first
two quarters minimum royalty payments of $187,500 each. Product development
revenues from Boston Scientific (which consist of reimbursement of certain
costs incurred by the Company) decreased to $79,000 for the six months ended
June 30, 1996 from $269,000 for the six months ended June 30, 1995 (a 71%
decrease), due to the completion of the Company's transfer of its stent
technology to Boston Scientific in November 1995 which has resulted in a
reduction of stent development costs incurred by the Company on behalf of
Boston Scientific.
 
Cost of Product Sales. Cost of product sales increased to $924,000 for the six
months ended June 30, 1996 from $546,000 for the six months ended June 30, 1995
(a 69% increase). The cost of product sales in both periods was entirely
related to vena cava filters, and the increase reflects the increase in vena
cava filters sold in the six months ended June 30, 1996. Cost of products
sales, as a percent of product sales, increased to 46% for the six months ended
June 30, 1996 from 42% for the six months ended June 30, 1995. This increase
reflects the impact of the introduction of the straight-line delivery system
which has a higher unit manufacturing cost as a percent of the selling price.
 
Research and Development. Research and development expense increased to $1.2
million for the six months ended June 30, 1996 from $366,000 for the six months
ended June 30, 1995 (a 228% increase). The increase reflects increased activity
in the Company's development programs for vena cava filters, the CardioSeal
Septal Occluder and other products under development. Increased expenses
resulted primarily from increases in personnel and related costs, engineering
expenses and facilities related costs. The Company received reimbursement from
Boston Scientific for $79,000 and $269,000 of these expenses in the six months
ended June 30, 1996 and 1995 respectively, which amounts are included in
revenues.
 
General and Administrative. General and administrative expenses increased to
$937,000 for the six months ended June 30, 1996 from $279,000 for the six
months ended June 30, 1995 (a 236% increase). The increase consisted primarily
of increases in personnel and related costs, legal and professional fees and
consulting expenses. These increases resulted from the Company's expanded scope
of operations.
 
Selling and Marketing. Selling and marketing expenses increased to $103,000 for
the six months ended June 30, 1996 from $65,000 for the six months ended June
30, 1995 (a 58% increase). The increase related primarily to the introduction
of the straight-line delivery system and the international distribution of the
vena cava filter by Bard International beginning in January 1996, and
secondarily to pre-marketing activities related to the CardioSeal Septal
Occluder. Selling and marketing expenses for the six months ended June 30, 1995
were entirely related to vena cava filters.
 
In-Process Research and Development. For the six months ended June 30, 1996,
the Company recorded a charge of $1.1 million for in-process research and
development related to the CardioSeal Septal Occluder which was acquired in
February 1996. See Note 3 of Notes to the Consolidated Financial Statements.
 
Interest Income (Expense), Net. Interest income, net was $101,000 for the six
months ended June 30, 1996 as compared to interest expense, net amounting to
$11,000 for the six months ended June 30, 1995. This increase was primarily due
to the receipt in February 1996 of $7.5 million in net proceeds from the sale
of Convertible Preferred Stock. Interest expense in both periods consisted
primarily of interest on subordinated debt to stockholders, which was fully
repaid in April 1996.
 
Income Taxes. The Company had no income tax provision for the six months ended
June 30, 1996 as it incurred an operating loss. Prior to October 19, 1995, the
Company elected to be taxed as a "S" Corporation for federal and state
 
                                       17
<PAGE>
 
income tax purposes and, accordingly, the financial statements do not include a
provision for income taxes for the six months ended June 30, 1995. The Company
has not recorded a pro forma tax provision as there would have been sufficient
net operating loss carryforwards to offset income in all periods presented. See
Note 4 to the Consolidated Financial Statements.
 
YEAR ENDED DECEMBER 31, 1995 COMPARED WITH YEAR ENDED DECEMBER 31, 1994
 
Revenues. Revenues increased to $3.8 million in 1995 from $2.6 million in 1994
(a 46% increase). Product sales of vena cava filters increased to $2.7 million
in 1995 from $1.8 million in 1994 (a 50% increase). This increase is primarily
due to increased unit sales of vena cava filters which the Company attributes
primarily to the distribution agreements with Bard. License fees, which consist
of payments from Boston Scientific related to the Company's stent technology,
decreased to $625,000 in 1995 from $773,000 in 1994 (a 19% decrease). License
fees in 1995 represent amounts received upon the achievement of a contractual
milestone. License fees in 1994 represented initial license fees received from
Boston Scientific upon entering into the license agreement in November 1994.
Product development revenues increased to $492,000 in 1995 from $38,000 in
1994. The significant increase in 1995 reflects a full year of development
efforts funded by Boston Scientific under the agreements entered into in
November 1994.
 
Cost of Product Sales. Cost of product sales increased to $1.3 million in 1995
from $812,000 in 1994 (a 60% increase). The increase in cost of product sales
reflects the increase in vena cava filter units sold in 1995. Cost of product
sales, as a percent of product sales, increased to 47% in 1995 from 44% in 1994
primarily due to the introduction of the vena cava straight-line delivery
system in November 1995, which has a higher unit manufacturing cost as a
percent of the selling price.
 
Research and Development. Research and development expenses increased to
$871,000 in 1995 from $555,000 in 1994 (a 57% increase). The increase reflects
increased product development and patent registration costs associated with the
development of the Company's stent technology which was licensed to Boston
Scientific in November 1994. Increased expenses resulted primarily from
increases in personnel, engineering expenses and facilities related costs. The
Company received reimbursement from Boston Scientific for $492,000 and $38,000
of these expenses in 1995 and 1994, respectively, which amounts are included in
revenues.
 
General and Administrative. General and administrative expenses increased to
$871,000 in 1995 from $770,000 in 1994 (a 13% increase). The increase is
primarily due to the expansion of the Company's infrastructure necessary to
support the growth of the Company and increases in product development
activities. Increased expenses consisted primarily of increases in personnel
and related costs and consulting expenses.
 
Selling and Marketing. Selling and marketing expenses decreased to $169,000 in
1995 from $182,000 in 1994 (a 7% decrease). Selling and marketing expenses in
1995 and 1994 are entirely related to the Company's vena cava filter.
 
Interest Income (Expense), Net. Interest expense, net decreased to $29,000 in
1995 from $39,000 in 1994 (a 26% decrease). The decrease reflects the repayment
of subordinated debt to stockholders. Interest income in 1995 and 1994 was not
significant.
 
YEAR ENDED DECEMBER 31, 1994 COMPARED WITH YEAR ENDED DECEMBER 31, 1993
 
Revenues. Revenues increased to $2.6 million in 1994 from $2.0 million in 1993
(a 30% increase). Product sales decreased to $1.8 million in 1994 from $2.0
million in 1993 (a 10% decrease). The decrease in product sales was due
primarily to a decrease in the sales price of such filters received by the
Company, as a result of the distribution agreement with Bard Radiology, offset
in part by increased unit sales. In 1992 the Company entered into its exclusive
distribution agreement with Bard Radiology, pursuant to which it receives a
specified percentage of the average selling price of the vena cava filter. This
percentage decreased in August 1993 from its introductory level and then again
in October 1994, to its current level under the agreement. The Company does not
anticipate any additional reductions under the terms of the agreement in the
near future. License fees were $773,000 in 1994. The Company had no license fee
revenue in 1993. License fees represent initial license fees received from
Boston Scientific upon entering into the license agreement in November 1994.
Product development revenues were $38,000 in 1994. The increase reflects
development efforts funded by Boston Scientific under the agreement entered
into in November 1994.
 
 
                                       18
<PAGE>
 
Cost of Product Sales. Cost of product sales increased to $812,000 in 1994,
from $655,000 in 1993 (a 24% increase). The increase in cost of product sales
reflects the increase in vena cava filter units sold. Cost of product sales, as
a percent of product sales, increased to 44% in 1994 as compared to 33% in 1993
primarily due to the impact of the contractual reduction in the unit selling
price of vena cava filters.
 
Research and Development. Research and development expenses increased to
$555,000 in 1994 from $272,000 in 1993 (a 104% increase). The increase reflects
increased product development and patent registration costs associated with the
development of the Company's stent technology which was licensed to Boston
Scientific in November 1994. Increased expenses consisted primarily of
increases in personnel, engineering expenses and facilities related costs. The
Company received reimbursement from Boston Scientific for $38,000 of these
expenses in 1994, which amount is included in revenues.
 
General and Administrative. General and administrative expenses increased to
$770,000 in 1994 from $468,000 in 1993 (a 65% increase). The increase is
primarily due to the expansion of the Company's infrastructure necessary to
support the growth of the Company and increases in product development
activities. Increased expenses consisted primarily of increases in personnel
and related costs and consulting expenses.
 
Selling and Marketing. Selling and marketing expenses decreased to $182,000 in
1994 from $285,000 in 1993 (a 36% decrease). Selling and marketing expenses in
1994 and 1993 are primarily related to the Company's vena cava filter. The
decrease reflects the Company's decision in 1993 to discontinue selling the
filter through independent distributors and begin distributing exclusively
through Bard.
 
Interest Income (Expense), Net. Interest expense, net decreased to $39,000 in
1994 from $62,000 in 1993 (a 37% decrease). The decrease in 1994 reflects the
repayment of a portion of the subordinated debt due to stockholders. Interest
income in 1994 and 1993 was not significant.
 
LIQUIDITY AND CAPITAL RESOURCES
 
The Company has funded its operations primarily through cash flows from
operations of $525,000, $1.2 million and $647,000 in the years ended December
31, 1995, 1994 and 1993, respectively. In the six months ended June 30, 1996,
operations utilized cash of $1,092,000 of which part was used to fund a portion
of the acquisition of the septal repair device technology and for working
capital. Cash flows from operations include $500,000 of upfront license fees
and a $100,000 advance product development billing received from Boston
Scientific in 1994 and recorded as deferred revenue. Cash flow from operations
was used to fund increases in accounts receivable of $238,000 and $282,000 in
the year ended December 31, 1995 and the six months ended June 30, 1996,
respectively. Such increases reflect the increases in product sales and the
timing of such product sales. In February 1996, the Company received
approximately $7.5 million in net proceeds from the sale of 3,787,104 shares of
Convertible Preferred Stock, which funds were used in part to accelerate its
facilities and infrastructure expansion. In the year ended December 31, 1994
and the six months ended June 30, 1996, the Company made distributions to its
stockholders of $500,000 and $100,000, respectively. In 1994, the Company began
repaying a $1.5 million loan received in 1992 from Bard. Loan payments are
based upon the number of domestic vena cava units sold to Bard Radiology. The
loan is expected to be fully repaid by the end of 1996. Payments during 1994,
1995 and the six months ended June 30, 1996 amounted to $242,000, $477,000 and
$382,000, respectively. In addition, during the years ended December 31, 1993,
1994, 1995 and the six months ended June 30, 1996, the Company repaid
subordinated debt to its stockholders amounting to $184,000, $329,000, $2,500,
and $309,000, respectively.
 
Purchases of property and equipment for use in its research and development and
general and administrative activities amounted to $336,000 during the three
years ended December 31, 1995 and $275,000 during the six months ended June 30,
1996. In May 1996, the Company entered into a lease for a new manufacturing
research and administrative facility which is expected to increase its annual
facility lease payments by approximately $400,000 beginning in the third
quarter of 1996. The Company anticipates incurring costs during 1996 and 1997
for leasehold improvements for its new facility of approximately $1.4 million,
net of the landlord's contribution, and for purchases of equipment and
furniture of approximately $1.5 million. The Company has received a $1.5
million firm commitment for financing substantially all of the equipment and
furniture. The Company anticipates incurring additional leasehold improvements
and purchases of equipment and furniture.
 
 
                                       19
<PAGE>
 
The Company is party to various other substantial contractual arrangements
including salaries and fees for current employees and consultants which are
likely to increase as additional agreements are entered into and additional
personnel are retained. The Company has also committed to purchase certain
minimum quantities of the vena cava filter from a supplier through June 2001.
See Note 8(a) of Notes to the Consolidated Financial Statements. All of these
arrangements require cash payments by the Company over varying periods of time.
Certain of these arrangements are cancelable on short notice and certain
require termination or severance payments as part of any early termination.
 
The Company believes that the anticipated net proceeds of the Offering, its
existing resources and cash flow from current operations will be sufficient to
fund its current level of operations and planned new product development,
including increased working capital requirements and capital expenditures, for
the foreseeable future. The Company expects to accelerate its product
development, marketing and other activities with the proceeds of the Offering.
The Company has incurred a net loss of $1.4 million for the six months ended
June 30, 1996, primarily as a result of a charge of $1.1 million for acquired
in-process research and development. See Note 3 of Notes to the Consolidated
Financial Statements. The Company expects operating losses to continue at least
through early 1997 as it continues to expend substantial resources to complete
development of the Company's products, seek regulatory clearances or approvals,
build its marketing, sales and manufacturing organizations and conduct further
research and development.
 
The Company may require funds in addition to the net proceeds of the Offering
for its research and product development programs, preclinical and clinical
testing, operating expenses, regulatory processes, manufacturing and marketing
programs and potential licenses and acquisitions. Any additional equity
financing may be dilutive to stockholders, and debt financing, if available,
may involve restrictive covenants. The Company's capital requirements will
depend on numerous factors, including the sales of its products, the progress
of its research and development programs, the progress of preclinical and
clinical testing, the time and cost involved in obtaining regulatory approvals,
the cost of filing, prosecuting, defending and enforcing any patent claims and
other intellectual property rights, competing technological and market
developments, developments and changes in the Company's existing research,
licensing and other relationships and terms of any collaborative, licensing and
other arrangements that the Company may establish.
 
 
                                       20
<PAGE>
 
                                    BUSINESS
 
OVERVIEW
 
The Company designs, develops, and markets innovative medical devices that
utilize advanced materials and are delivered by minimally invasive procedures.
The Company's products offer alternative approaches to complex medical
treatments, thereby reducing patient trauma, shortening procedure,
hospitalization and recovery times, and lowering overall treatment costs. The
Company's patented medical devices include self-expanding stents, vena cava
filters (the Simon Nitinol Filter) and septal repair devices (the CardioSeal
Septal Occluder). The Company's strategy is to develop and commercialize a
broad range of advanced medical devices for minimally invasive applications to
address unmet medical needs. At this time, the Company's stents are in European
clinical trials for certain indications, its vena cava filters are marketed in
the United States and abroad, and the Company is completing development of its
septal repair device.
 
The Company has established arrangements with Boston Scientific and Bard,
worldwide leaders in sales of minimally invasive medical devices, for the
distribution, sale and marketing of its stents and its Simon Nitinol Filter,
respectively. The Company intends to continue to market products with extensive
distribution requirements through collaborations with established market
leaders. NMT intends to develop direct marketing and distribution capabilities
for products with smaller and more easily accessible user groups (such as the
CardioSeal Septal Occluder).
 
BACKGROUND
 
The Company was founded in July 1986 to develop and commercialize medical
devices using nitinol. Dr. Morris Simon, the Company's Scientific Director and
co-founder, was one of the first medical researchers to investigate the use of
nitinol for medical device applications. In April 1990, the Company obtained
FDA clearance to market its initial product, the Simon Nitinol Filter, in the
United States. The Company entered into an exclusive distribution agreement
with Bard Radiology for distribution of the SNF in the United States and
certain other countries in May 1992. The Company's primary stent patent was
issued in November 1994 and, during the same month, the Company entered into an
exclusive license agreement with Boston Scientific to further develop,
manufacture, market and distribute NMT's stents worldwide. In November 1995,
the Company expanded its relationship with Bard by granting Bard International
the right to distribute the SNF in most markets outside the United States. In
February 1996, the Company acquired the rights to its CardioSeal Septal
Occluder to complement the Company's core technologies and expand its product
base. See "Certain Transactions."
 
CORE TECHNOLOGIES
 
NMT has developed an expertise in precisely engineering nitinol and other
advanced materials, such as MP35N, for a variety of innovative medical device
applications. The Company has developed capabilities in advanced device
fabrication, materials characterization, manufacturing and process control and
sophisticated in vitro testing resulting in highly efficient and reliable
manufacturing processes.
 
Nitinol, a nickel-titanium alloy, has unique superelastic and thermal shape-
memory characteristics. The superelastic characteristics enable a nitinol-based
device to undergo severe deformation without permanent damage to either its
shape or strength. The thermal shape-memory characteristics of nitinol enable a
device which has been radically deformed to return to its intended shape in
response to a small change in temperature. The mechanical properties that can
be engineered into nitinol-based devices permit innovative product designs that
presently would be difficult or impossible to replicate with other materials.
The Company utilizes both the superelastic and thermal shape-memory
characteristics of nitinol for medical device applications. The Company has
demonstrated its ability to utilize these characteristics to provide for ease
of access and delivery of sophisticated medical devices that transform into
their intended shape once placed into the body. Nitinol is biocompatible and
non-ferromagnetic, thereby allowing the use of magnetic resonance imaging on
patients with nitinol-based device implants.
 
MP35N is an advanced metal alloy which is biocompatible and resistant to
corrosion and fatigue. The Company has combined the use of MP35N with knitted
polyester in developing the CardioSeal Septal Occluder. Knitted polyester, a
biocompatible fabric that encourages tissue in-growth, has been extensively
used in the vasculature for many years.
 
                                       21
<PAGE>
 
STRATEGY
 
The key elements of the Company's business strategy include:
 
    .Developing a broad range of advanced medical devices for
      minimally invasive applications which offer alternative
      approaches to existing medical treatments to reduce patient
      trauma, procedure, hospitalization and recovery times, and
      overall treatment costs.
 
    .Targeting development of products for large, fast growing
      market segments with unmet medical needs.
 
    .Focusing development efforts on core technologies which
      leverage the Company's expertise in nitinol and other
      advanced materials.
 
    .Establishing collaborations with market leaders for the
      marketing and distribution of products in larger markets with
      more extensive distribution requirements.
 
    .Creating direct marketing and distribution capabilities for
      products with smaller and more easily accessible user groups.
 
    .Developing commercial scale manufacturing facilities to become
      a fully-integrated medical device company.
 
    .Strengthening the Company's competitive position by
      developing, acquiring and licensing technologies and products
      that complement its business.
 
PRODUCTS
 
Stents
 
Stents are small tubes that hold open arteries, veins and other passageways in
the body, such as the esophagus and bile duct, that have closed or become
obstructed as a result of disease, trauma, or aging. Stents are placed in the
body using catheter-based delivery systems in minimally invasive procedures.
Once deployed, they exert radial force against the walls of passageways to
enable such passageways to remain open and functional. A number of different
stent designs, materials and delivery systems, with varying characteristics are
currently available. The three most prevalent stent designs are slotted tubes
(a metal tube from which most of the material is removed, resulting in a
lattice-like structure), coiled stents (continuous coiled wire) and wire mesh
stents (knitted metal wire). Most stents are currently manufactured using
stainless steel or similar alloys and are deployed through the expansion of a
balloon on a catheter-based delivery system. After deployment, a second balloon
may be used to further expand the stent. Certain stents, including the
Company's, are self-expanding, thereby eliminating the need for a balloon on
the delivery catheter. The factors influencing the performance of a stent
include ease of deployment, radial strength, flexibility, stability and the
ability to achieve precise placement.
 
Stents have emerged as one of the fastest growing segments of the medical
device market and are used increasingly as adjuncts or alternatives to a
variety of medical procedures because it is believed that they are beneficial
to overall patient outcome and may, over time, reduce total treatment costs.
 
Stents are increasingly being used in connection with the treatment of
atherosclerosis, a vascular disease characterized by the deposit of fatty
substances (plaque) in the interior walls of blood vessels. The accumulation of
plaque narrows the blood vessels, thereby reducing blood flow. Accumulation of
atherosclerotic plaque in the vessels of the heart can result in narrowing or
blockage of the arteries that provide blood flow to the heart, causing chest
pain (angina pectoris) and heart attacks. Atherosclerosis in the peripheral
vessels can cause a narrowing or blockage of the vessels that provide blood to
the legs, causing pain and cramps, and possible tissue damage, which in severe
cases can result in amputation. Atherosclerotic plaque in the carotid arteries,
located near the surface of the neck, can cause a narrowing of the vessels that
provide the primary blood flow to the brain, causing dizzy spells, "mini
strokes" known as transient ischemic attacks (TIA's) and strokes.
 
                                       22
<PAGE>
 
Balloon dilation (angioplasty) of the coronary and peripheral arteries has
become one of the most common minimally invasive procedures performed
worldwide. The effectiveness of angioplasty has been limited by the relatively
high rate of reclosure of the treated vessels (restenosis) during the first
several months after dilation. Therefore, the use of stents in conjunction with
angioplasty is increasingly becoming an accepted practice to reduce the
incidence of restenosis. Advanced carotid artery disease is currently generally
treated by invasive surgery (endarterectomy). Angioplasty with stenting is
being used on an experimental basis as a minimally invasive alternative to
surgery in the carotid arteries.
 
Injury, disease, birth defect or trauma can cause a weakening of a section of
an arterial wall that can result in a bulge in the artery called an aneurysm,
which if ruptured can lead to death. One of the most common of these aneurysms
is an abdominal aortic aneurysm ("AAA"). Current treatment of AAA requires
highly invasive surgery. Stent grafts using catheter-based delivery systems are
currently being performed on an experimental basis.
 
Stents are also being used for palliative treatment of certain cancers. During
the later stages of esophageal cancer, for example, patients often develop a
narrowing of the esophagus due to tumor ingrowth. This narrowing inhibits the
ability to swallow. These strictures are now treated most often with painful
dilations or laser ablation. Pancreatic cancer often results in a narrowing of
the bile duct due to tumor ingrowth. The patient can become jaundiced and
develop fever. Current treatment for tumor ingrowth of the bile duct includes
the use of plastic and self-expanding metal mesh stents.
 
NMT's Hex-cell Stents. The Company has developed and patented a nitinol stent
which relies on a novel hexagonal cell (hex-cell) design. NMT's stents can be
customized into a variety of sizes, shapes, flexibilities, and radial force
characteristics for use in treating specific indications. The Company utilizes
both the superelastic and thermal shape-memory characteristics of nitinol to
provide for ease of access and delivery of its stents which transform into
their intended shape once placed into the body.
 
NMT's stents have the following characteristics which the Company believes will
offer patients and physicians advantages over many competing stents and
surgical procedures:
 
    . Self-expanding deployment does not necessitate the use of a
      balloon catheter-based delivery system, thereby avoiding
      vessel occlusion during stent placement and simplifying the
      procedure.
 
    . Controlled, sustained radial force, prevents movement of the
      stent after deployment and provides resistance to vessel
      spasm.
 
    . Cannot be permanently deformed by compression or trauma to
      the stented vessel, thereby avoiding accidental reclosure.
 
    .Radial strength, overall rigidity and shape can be varied for
      different medical applications.
 
    . Large expansion ratio (up to 15:1) enables a larger diameter
      NMT stent to be delivered by a small diameter catheter,
      helping to prevent injury at the access site and to adjacent
      vessels and may provide improved access to smaller vessels.
 
    .Minimal length change during deployment aids in precise
       placement.
 
    . Easy mating with graft material to enable use in procedures
      such as AAA repair and peripheral vascular stent grafting.
 
Market Opportunity. From its infancy in 1990, the stent market has grown to
estimated worldwide sales of $500 million in 1995 with continued growth
expected. As shown in the following table, the Company estimates that in 1995
there were approximately 1.7 million procedures for medical conditions that
stents have been designed to address. Although stents are not used currently in
most of these cases, the Company believes that stents may be used as an adjunct
or alternative treatment in many of these procedures.
 
                                       23
<PAGE>
 
     PROCEDURES POTENTIALLY SUITABLE FOR STENTS-1995
 
                                     -------------------------
<TABLE>
<CAPTION>
                                         UNITED STATES INTERNATIONAL WORLDWIDE
                                         ------------- ------------- ---------
      <S>                                <C>           <C>           <C>
      Coronary Angioplasty                     450,000       245,000   695,000
      Peripheral Vascular Graft Surgery        175,000       145,000   320,000
      Peripheral Vascular Angioplasty          140,000       130,000   270,000
      Carotid Surgery                          100,000        85,000   185,000
      Abdominal Aortic Aneurysm Surgery         45,000        45,000    90,000
      Biliary                                   40,000        60,000   100,000
      Esophageal                                10,000        15,000    25,000
                                             ---------     --------- ---------
        Total                                  960,000       725,000 1,685,000
                                             =========     ========= =========
</TABLE>
 
The estimates in the foregoing table are based on available data concerning
procedures performed in the United States. The Company's estimates outside the
United States are based upon its extrapolation of such data.
 
To date, most stents have been used for the treatment of atherosclerotic plaque
in the coronary arteries. The Company believes that the increase in stent usage
for other procedures and indications has been limited, in part, by the
characteristics of stents currently available. NMT believes that its stents may
offer certain advantages over currently available stents and, in connection
with its collaboration with Boston Scientific, is actively pursuing the
development of its stents in each of the market segments described below. See
"Risk Factors--Limited Commercialization; Uncertainties of Product Development
and Market Acceptance," "--Relationship with Boston Scientific," "--Current
Status" and "--Agreements with Boston Scientific and Bard."
 
Peripheral Vascular. Existing stents for vascular disease include both balloon-
expandable and self-expanding stents. While stent use is well established in
the larger vessels such as the iliac arteries, currently available stents have
limitations in their use in the smaller, more exposed vessels of the leg due to
difficulty of placement, insufficient radial strength and flexibility and a
higher risk of clot formation.

The Company believes that its stents may offer advantages over currently
available stents in flexibility, radial strength and placement. NMT's stents
have precisely engineered radial strength, cannot be permanently deformed after
deployment, and can be delivered using a small diameter catheter.
 
Peripheral Vascular Stent Grafts. For many patients who currently undergo
surgical bypass grafting for the treatment of atherosclerosis in the vessels of
the legs, the length of the blockage makes balloon dilation and traditional
stenting difficult or impractical.
 
The Company believes that its stents may provide for a new minimally invasive
alternative to bypass surgery using long covered stents or multiple stents
joined with graft material (stent grafts) and inserted in the vessel
percutaneously. NMT's stents can be mated easily to graft material, cannot be
deformed by trauma to the stented vessel, can be engineered with precise radial
force to prevent movement and assure hemostasis (absence of blood leakage
around the stent) after deployment. The self-expanding deployment of NMT's
stents may also simplify the delivery mechanics for the physician.
 
Carotid Arteries. While some stenting of the carotid arteries (located near the
surface of the neck) is being done experimentally, the Company believes that
the characteristics of current stents limit their utility in the carotid
arteries. Balloon expandable stents require occluding blood flow to the brain
during deployment. In addition, balloon expandable stents can be permanently
deformed by compression or trauma to the stented vessel.
 
The Company believes its stents will not require occluding blood flow to the
brain during deployment and, unlike currently available balloon expandable
stents, cannot be permanently deformed after deployment, thereby preventing
accidental closure of the vessel. In addition, the Company believes that its
stents can be engineered to exert precise radial force to prevent movement, are
designed to conform well to the vessel shape, have minimal length change during
deployment for highly accurate placement, and can be delivered by a small
diameter catheter.
 
 
                                       24
<PAGE>
 
Abdominal Aortic Aneurysm. The Company believes that the use of a covered stent
or stented graft could provide a minimally invasive alternative to surgery in
the treatment of AAA.
 
The Company believes that its stents may be particularly well suited for AAA
treatment. Specifically, NMT's stents can be mated easily to grafting material
and have sustained radial force to prevent migration and assure hemostasis. In
addition, NMT's stents have a large expansion (up to 15:1) ratio for deployment
of a large diameter stent on a small diameter catheter and are self-expanding
thereby avoiding occlusion of the aorta during deployment and simplifying the
procedure.
 
Esophageal/Biliary. Existing palliative treatment for esophageal cancer
includes painful dilations. Laser ablation is also utilized, but is a treatment
that requires sophisticated equipment and highly-trained physicians, and often
requires expensive repeat procedures. Existing stents for tumor ingrowth of the
bile duct primarily include plastic and self-expanding wire mesh stents.
Plastic stents can become blocked rather quickly because of their narrow
diameter, and the wire mesh stents, due to their mesh design, may not resist
further tumor growth.
 
The Company believes that its stents may have advantages for both of these
indications. NMT's stents have a large expansion ratio for delivery of a large
diameter stent on a small diameter catheter and exert sustained radial force
which may resist recoil from continued tumor growth.
 
Coronary Arteries. Existing stents for coronary disease include balloon-
expandable or self-expanding wire mesh stents.
 
The Company believes that its stents may have advantages over other stents for
use in coronary arteries. NMT's stents are self-expanding to avoid balloon
occlusion of the vessel during placement, may not require post-deployment
ballooning, and exhibit minimal length change during deployment for highly
accurate placement.
 
Relationship with Boston Scientific. In November 1994, NMT licensed to Boston
Scientific, a worldwide leader in sales of minimally invasive medical devices,
exclusive worldwide rights to develop, manufacture, market and distribute the
Company's stent technology. Boston Scientific is the leader in the peripheral
angioplasty market, a leader in the vascular graft market and a leader in the
coronary angioplasty market. Under the terms of this agreement, Boston
Scientific funds, and has control over, product development, manufacturing
scale-up, clinical trials, marketing and distribution worldwide and has the
sole right to use the patents and technical information owned by NMT related to
stents. NMT receives a sales royalty, milestone payments, minimum license fees,
manufacturing cost reduction incentives and reimbursement of development costs.
Boston Scientific has assumed responsibility for conducting the necessary
preclinical and clinical studies, obtaining the regulatory approvals it deems
necessary, and manufacturing and marketing NMT's stents worldwide.
 
Boston Scientific is not prohibited from selling competing stents and has
established a broad-based stent program. In addition to its collaboration with
the Company, Boston Scientific has obtained exclusive worldwide rights to
Medinol, Ltd.'s balloon expandable stent technology and has developed its own
Strecker knitted stent technology and Sabre(TM) self-expanding stent
technology. Boston Scientific launched Medinol's NIR(TM) coronary stent in
Europe in March 1996. In May 1996, Boston Scientific acquired Mintec, Inc., a
privately held company, which develops stent graft technology and has announced
its intention to launch a device for the repair of AAAs in the near future.
 
The Company believes that its relationship with Boston Scientific, a market
leader which has made a significant commitment to developing stent technology,
will facilitate the development and commercialization of the Company's stents.
The Company and Boston Scientific are currently pursuing projects to develop
the Company's stents for a variety of applications. The markets ultimately
targeted for commercial sales will be determined by Boston Scientific pursuant
to the license agreement. See "Risk Factors--Dependence Upon Collaborators" and
"--Agreements with Boston Scientific and Bard."
 
Current Status. European clinical trials for the NMT stent in peripheral
vessels have been initiated by Boston Scientific. Boston Scientific has advised
the Company that it intends to begin marketing a line of the Company's
peripheral vascular stents in Europe during 1996 under the name Symphony and
intends to seek FDA approval of an
 
                                       25
<PAGE>
 
IDE for peripheral vascular applications in the near future. Boston Scientific
has also initiated European trials of the NMT stent for peripheral vascular
stent grafts. Such trials are intended to demonstrate that a stent graft may
provide for a new minimally invasive alternative to bypass surgery using
multiple NMT stents joined with graft material and inserted in the vessel
percutaneously. See "Risk Factors--Limited Commercialization; Uncertainties of
Product Development and Market Acceptance."
 
Boston Scientific is completing a scale-up of its stent manufacturing
capabilities in the United States to enable it to manufacture NMT's stents in
quantities to support clinical trials and initial anticipated commercialization
in certain markets. The Company and Boston Scientific continue to work
collaboratively towards the development of NMT's stents for additional
indications and to achieve manufacturing efficiencies.
 
Competition. Competition in the stent market is intense and is expected to
increase. Most of the stents sold today are balloon expandable and have been
designed primarily for coronary applications. However, the companies listed
below, as well as other companies, may be developing additional stents. Some of
the stents being developed may be more similar to the Company's stents than
those in the market today, although the Company does not know of any competitor
that is developing a stent substantially similar to its product.
 
Johnson & Johnson Interventional Systems Co., Cook Inc., Guidant
Corporation/ACS, Boston Scientific/Medinol, and Arterial Vascular Engineering,
Inc., among others, currently sell stainless steel, balloon expandable stents
in the United States or internationally.
 
The following table lists the Company's major competitors who are currently
selling or, to the Company's knowledge, developing self-expanding stents in the
United States or internationally.
 
<TABLE>
<CAPTION>
                                         ----------------------------
                                                MATERIAL       DESIGN
          COMPANY                        --------------- ------------
          <S>                            <C>             <C>
          Pfizer, Inc./Schneider         Stainless steel    Wire mesh
          Medtronic, Inc./Instent                Nitinol         Coil
          Boston Scientific (Strecker)          Tantalum    Wire mesh
          Boston Scientific (Sabre(TM))          Nitinol Slotted tube
          Bard/Angiomed                          Nitinol Slotted tube
</TABLE>
 
Vena Cava Filters
 
Vena cava filters are used for the prevention of pulmonary embolism (a blood
clot lodged in the vessels supplying blood to the lungs). These emboli (clots),
which often develop initially in the veins of the legs, can break loose and
travel up the vena cava, through the heart and into the blood vessels of the
lungs, causing acute respiratory and circulation problems. Vena cava filters
are intended to trap these clots before they can reach the lungs. Patients at
high risk for pulmonary embolism include post-operative orthopedic and
neurosurgery patients, cancer patients undergoing surgery and chemotherapy and
severe trauma victims. There are 600,000 incidents of pulmonary embolism
diagnosed in the United States each year with 125,000 to 150,000 deaths per
year. While usually treated initially with anticoagulant drugs, vena cava
filters may be used in cases where drug therapy has failed or is
contraindicated. Factors influencing the performance of vena cava filters
include coverage of the vena cava and the pattern of the filtering method.
Additionally, the variety of entry site options and the size of the delivery
system affects ease of deployment.
 
Simon Nitinol Filter. The Company has developed a nitinol vena cava filter
which possesses highly efficient clot filtering characteristics. The Company
has engineered both the superelastic and thermal shape-memory characteristics
of nitinol to provide for ease of delivery of a vena cava filter which can be
easily implanted in the patient by a minimally invasive procedure using the
Company's patented catheter-based delivery systems. The Company's vena
 
                                       26
<PAGE>
 
cava filter transforms into its intended shape once deployed into the body. The
SNF can be implanted from the veins in the leg or neck, and is the only
currently available vena cava filter which can also be implanted from the veins
in the arm.
 
NMT believes the Simon Nitinol Filter offers patients and physicians several
advantages over competing vena cava filters, including the following:
 
    .Sophisticated design facilitates accurate deployment and
      provides for highly efficient clot filtration.
 
    .Smallest diameter catheter-based delivery system results in
      minimal trauma to the access site or to the vessels during
      deployment.
 
    .Largest number of delivery options (leg, neck and arm)
      provides adaptability to individual patient conditions and
      anatomy.
 
    .Device flexibility facilitates easy maneuvering of the device
      through tortuous anatomy during deployment to the filter
      delivery site.
 
Market Opportunity. The worldwide sales for vena cava filters were estimated to
be $53 million in 1995. Worldwide sales for vena cava filters has grown at an
average annual rate of 14% for the past four years. The United States
represents 75% of current worldwide sales. NMT's vena cava filters currently
have an approximately 11% share of vena cava filter sales in the United States.
See "--Competition." The European market is currently small but is expected to
grow as clinical data on the cost effectiveness of vena cava filter use
continues to be developed.
 
Current Status. The Company received FDA 510(k) clearance to market the SNF,
and commenced sales, in April 1990. All 510(k) notifications with respect to
subsequent modifications to the SNF have also been accepted by the FDA. In
November 1995, the Company introduced a simplified, straight line catheter-
based delivery system for its SNF.
 
New Product Development. The Company is currently developing a retrievable vena
cava filter and a superelastic vena cava filter, discussed below.
 
Retrievable Vena Cava Filter. Currently available vena cava filters are
permanent implants which can only be removed surgically. Therefore, patients
who are at risk for pulmonary embolism for a defined period of time (post-
operative recovery, recovery from trauma, etc.) and receive a vena cava filter
have the implant in place for life. There is often a psychological resistance
to implantation of a permanent device. As a result, a vena cava filter is often
not used until a patient at risk has experienced his or her first pulmonary
embolism. However, recent controlled studies conducted by others of the
prophylactic use of currently available permanent vena cava filters in severe
trauma patients have demonstrated a significant reduction in morbidity and
mortality in this category of high-risk patients for pulmonary embolism. The
Company believes that the availability of a retrievable vena cava filter may
result in greater prophylactic use, and may be used in lieu of a permanently
implanted device in certain circumstances.
 
The Company is conducting early design and feasibility work on a retrievable
vena cava filter which can be placed into the body and later removed. Vena cava
filters which remained implanted for six weeks were successfully removed from
sheep in studies conducted by the Company in April 1996. Following additional
laboratory and animal testing, the Company anticipates commencing European
clinical trials during 1997. The Company also anticipates filing an IDE for a
retrievable vena cava filter during 1997 to enable the Company to conduct human
clinical trials in the United States. See "Risk Factors--Limited
Commercialization; Uncertainties of Product Development and Market Acceptance."
 
Superelastic Vena Cava Filter. Presently, all vena cava filters have the
potential for a filter leg to penetrate the wall of the vena cava into
surrounding organs or structures. Although no significant adverse clinical
consequences have resulted from reported protrusions to date associated with
the Simon Nitinol Filter (nor to the Company's knowledge with respect to any
other vena cava filter), the Company believes that a vena cava filter which
utilizes the superelastic
 
                                       27
<PAGE>
 
characteristic of Nitinol to avoid this phenomenon would represent a
technological advance. Furthermore, there can be no assurances that adverse
clinical consequences associated with filter leg penetration will not occur in
the future. See "Risk Factors--Product Liability Risks; Insurance."
 
The Company is conducting research and development related to a superelastic
vena cava filter. The Company's proposed superelastic vena cava filter would
resemble the current SNF but would incorporate structural changes in the legs
of the device enabling each leg of the filter to exert an evenly measured
degree of controlled outward force against the wall of the vessel regardless of
the diameter of the patient's vena cava. The superelastic vena cava filter
would be designed to enable secure placement, while offering constant radial
leg force and reduced potential for penetration of the wall of the vena cava.
The Company believes that this cannot be achieved presently using traditional
device materials. See "Risk Factors--Limited Commercialization; Uncertainties
of Product Development and Market Acceptance."
 
Relationship with Bard. The Company entered into an exclusive distribution
agreement in May 1992 with Bard Radiology for distribution of the SNF in the
United States and certain other countries. Sales and market penetration for the
SNF have increased significantly as a result of this agreement. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations." Beginning November 30, 1995, Bard International was granted the
exclusive right to distribute the SNF in most markets outside the United
States. Although there can be no assurance, NMT believes that international
sales and market share growth will increase substantially as a result. The loss
of either distributor would have a material adverse affect on the Company's
business. See "Risk Factors--Dependence Upon Collaborators."
 
Each of the distribution agreements is for a five year term. Bard Radiology may
renew, at its option, its agreement thereafter for periods of five years. The
Company's agreement with Bard International renews automatically for successive
one year periods unless terminated by either party. Both distributors are
obligated to make annual minimum purchases and have agreed not to sell
competing vena cava filters during the term of the respective distribution
agreements. Bard Radiology has also agreed not to compete for an additional two
years after its distribution agreement with the Company has terminated. In
addition, the Company has granted Bard Radiology a right of first offer for any
of NMT's new devices which may be marketed to interventional radiologists and
for which NMT desires to enter into an exclusive distributorship within the
United States. See "--Agreements with Boston Scientific and Bard."
 
Manufacturing. The Company has contracted with Lake Region for the production
of the filter component of the SNF. The Company's agreement with Lake Region
grants Lake Region the right to manufacture at least 75% of the Company's
worldwide requirements of the current filter, for a period of five years until
June 30, 2001. The Company is obligated to order a minimum quantity of the
current filters and pay Lake Region a fixed price per unit. Lake Region has
agreed not to manufacture filters for a third party for a period of two years
after the termination of the agreement. See "Risk Factors--Limited
Manufacturing History; Dependence on Third Parties." The Company currently
purchases the delivery systems for the SNF under purchase orders from third-
party suppliers.
 
Competition. Boston Scientific, among others, currently competes with the
Company in sales of vena cava filters. Boston Scientific introduced the
Greenfield Filter to the market in the mid-1970's and is still the predominant
leader with approximately 70% of current unit sales of vena cava filters in the
United States. Since the introduction of the Simon Nitinol Filter in 1990, NMT
has achieved the second highest level of sales (approximately 11% of current
unit sales, equal to those of B. Braun) in the United States due primarily to
its distribution agreement with Bard Radiology and the introduction of a new
simplified delivery system. Another competitor in this market includes
Cook, Inc.
 
                                       28
<PAGE>
 
Septal Repair Devices
 
The Company has acquired exclusive rights to develop and market a patented
septal repair device, the CardioSeal Septal Occluder, which is designed for the
repair of intracardiac shunts commonly known as "holes in the heart."
Intracardiac shunts are common medical problems, occurring primarily in
children, that result in abnormal blood flow through the chambers of the heart.
The most common defects occur in either the atrial ("ASD") or ventricular
("VSD") septum which divide the left and right pumping chambers of the heart.
Patients with these defects may suffer from poorly oxygenated blood and require
increased cardiac effort to adequately supply blood to the body. This may lead
to congestive heart failure and pulmonary hypertension, resulting in severe
incapacity or even death. The current treatment is open heart surgery. Open-
heart surgery involves opening a patient's chest, cutting through the sternum,
connecting the patient to a heart/lung machine and opening the heart to
surgically repair the hole. Such a procedure is costly and generally requires
up to a week of hospitalization and an extensive recovery period. The
CardioSeal Septal Occluder is designed to be a minimally invasive, less costly
alternative to open heart surgery.
 
               The following three diagrams illustrate normal
               cardiac anatomy, a hole in the atrial septum of
               the heart (ASD) and a hole in the ventricular
               septum of the heart (VSD), respectively.
 
 
                            [DIAGRAMS APPEAR HERE]
 
Another common septal defect is the Patent Foramen Ovale ("PFO"), a transient
hole which may open under straining efforts (coughing, defecating, etc.). PFO
has been implicated as a possible cause of embolic strokes, in which small
blood clots escape through the PFO and travel to the brain. Current treatment
for patients who have experienced embolic strokes is lifelong anticoagulation
therapy, which may result in significant side effects and/or patient
noncompliance with the treatment regimen. Recently, some institutions have
begun advocating open heart surgery to close PFO's to prevent additional
strokes. The Company believes that its septal repair device using a minimally-
invasive delivery system may address the needs of the PFO market.
 
               The diagram below shows a cross-section of the
               heart and a transient hole between the left and
               right atriums, known as a PFO.
 
                            [DIAGRAM APPEARS HERE]
 
 
                                       29
<PAGE>
 
CardioSeal Septal Occluder. The CardioSeal Septal Occluder is a catheter-
delivered cardiac implant designed to close septal defects. The device consists
of eight wire spring arms covered with two pieces of knitted polyester fabric
which form two opposed disk-like occluders each having an umbrella shape. The
framework is made of MP35N, a material chosen because of its superior
characteristics as an implant material (biocompatibility and corrosion and
fatigue resistance). Knitted polyester was chosen because of its extensive use
in the cardiovascular system and its ability to promote normal tissue in-
growth. At the center of the occluders is an inter-connection point which
allows the product to be placed within the septal defect so that one umbrella
is opened on each side of the defect. The product is designed to be
manufactured in five diameter sizes ranging from 17mm to 40mm.
 
The CardioSeal Septal Occluder is delivered to the site of the defect through a
puncture of the femoral vein in the leg. The device is loaded into a delivery
catheter and moved toward the defect site (top left diagram). At the defect
site, the CardioSeal Septal Occluder is deployed through the defect (top center
diagram) and the first umbrella is opened (top right diagram). The delivery
system is then retracted through the hole so that the first umbrella comes into
contact with the septal wall (bottom left diagram). The delivery system is then
retracted further allowing the second umbrella to open and seal the defect from
both sides (bottom center diagram). Once the position of the CardioSeal Septal
Occluder is confirmed, the physician detaches the delivery system and removes
it from the patient (bottom right diagram).
 
 
                           [DIAGRAMS APPEARS HERE]  
 
 
                   
 
An earlier version of the septal repair device, named the Clamshell, was
developed by Bard in collaboration with Children's Hospital of Boston. Between
1989 and 1991 Bard sponsored clinical trials of the Clamshell in over 700
patients with a variety of cardiac conditions. In 1991, Bard discovered
fractures of the stainless steel framework in certain of the devices implanted
during such clinical trials and, following such discovery, suspended its
clinical trials. However, Bard subsequently submitted, and the FDA approved, a
revised IDE to permit the continued use of the Clamshell for patients with
limited therapeutic alternatives and at high risk for surgical repair of their
condition. The Company is not aware of any significant adverse clinical
consequences, such as death or life-threatening injury necessitating emergency
surgery, resulting from the observed fractures. Redesign efforts were initiated
in collaboration with Dr. James Lock, Chairman of the Cardiology Department at
Children's Hospital of Boston. Extensive engineering redesign and testing,
including the use of MP35N for the framework, resulted in significant
improvements in both the fatigue and corrosion resistance of the device. See
"Risk Factors--Uncertainties of Successful Redesign of the Septal Repair
Device" and "Risk Factors--Product Liability Risks; Insurance."
 
In 1995, Bard donated the technology and associated assets to Children's
Hospital of Boston which subsequently licensed the technology to InnerVentions.
The Company acquired the rights to develop and commercialize the current septal
repair device in February 1996. In connection with the acquisition, the Company
acquired all of the existing development, manufacturing and testing equipment,
patent licenses, know-how and documentation necessary to manufacture septal
repair devices which had been originally developed by Bard. NMT has hired
certain key personnel who worked on this project at Bard. See "Certain
Transactions."
 
Market Opportunity. The Company believes the CardioSeal Septal Occluder may be
suitable for approximately 55,000 patient implants annually for congenital
heart defects and approximately 145,000 adult patients annually with
 
                                       30
<PAGE>
 
PFOs. Such estimates are based on industry reports of the total numbers of
patients diagnosed with such conditions and the Company's own analysis of the
portions of such populations for whom its device may be suitable. See "Risk
Factors--Limited Commercialization; Uncertainties of Product Development and
Market Acceptance."
 
Current Status. The Company believes that based on clinical usage of the septal
repair device since 1989, clinical utility has been demonstrated. Children's
Hospital of Boston is currently conducting clinical trials of the redesigned
Clamshell device under an IDE granted by the FDA in the second quarter of 1996
to allow for use of the devices in patients with a variety of cardiac
conditions and at high risk for surgery. The devices being tested by Children's
Hospital of Boston were provided by Bard and were not included in the assets
acquired by the Company. The CardioSeal Septal Occluder will be manufactured
based on the same design specifications as the redesigned Clamshell devices
currently being tested by Children's Hospital of Boston.
 
The Company has tested the CardioSeal Septal Occluder with an extensive series
of pre-clinical tests. Such pre-clinical testing culminated with an accelerated
in vitro life test of 630 million cycles (which equates to 10 years at 120
heartbeats per minute). During such testing, no fractures occurred in the
CardioSeal Septal Occluder even though the stress levels were set to simulate
significantly greater levels of stress observed clinically with the original
Clamshell device. The Company believes that the current CardioSeal Septal
Occluder is now ready to enter clinical trials and intends to commence clinical
trials for the CardioSeal Septal Occluder in Europe in late 1996. In the United
States, the FDA classifies the septal repair device as a Class III medical
device, which requires receipt of pre-market approval prior to marketing. In
August 1996, the Company received conditional approval of its IDE to conduct a
multi-center, pivotal clinical trial in the United States for ASDs. The
Company's approval is conditioned on minor modifications to the investigational
plan recommended by the FDA and accepted by the Company, and the submission of
additional data to the FDA within 45 days, which the Company submitted in
September 1996. The Company anticipates initiating its United States clinical
trials for ASD in the fourth quarter of 1996 pending product availability. See
"Risk Factors--Government Regulation; Product Approvals Uncertain."
 
Clinical protocol submissions have been made in Canada and Europe to commence
ASD clinical trials. The study protocol will be substantially the same as that
used in the United States. The Company anticipates commencement of these
clinical trials in late 1996 and will pursue clinical studies for the PFO
indication following the successful completion of its ASD trials. There can be
no assurances, however, that the Company's proposed clinical trials will be
successfully completed or that the Company will be able to achieve the
foregoing product development schedule. See "Risk Factors--Government
Regulation; Product Approvals Uncertain."
 
New Product Development. The Company is currently evaluating design
enhancements to the CardioSeal Septal Occluder as well as alternative designs
for the device. The Company is considering the use of nitinol for the device to
further reduce the size of the delivery system, further simplify the deployment
procedure and potentially broaden the range of therapeutic indications.
 
Marketing and Sales Strategy. The Company intends to develop its own sales
force to market the CardioSeal Septal Occluder. There are approximately 150 to
200 pediatric interventional cardiologists in the United States who could
potentially implant the device. These specialists practice at an estimated 75
to 100 institutions that provide advanced cardiac care to children. It is
estimated that a similar number of centers would be targeted internationally.
Therefore, the Company believes that the size and scope of the target audience
is manageable with a small, specialized sales and marketing team. The Company's
marketing strategy will require a specific physician training program prior to
selling products into any center. See "Risk Factors-- Limited Manufacturing
History; Dependence on Third Party Manufacturers."
 
Manufacturing. The Company has signed a lease for, and is in the process of
renovating, an approximately 27,000 square foot facility in Boston,
Massachusetts. A fully integrated GMP and ISO 9000 manufacturing facility will
be included in this space so that the manufacture of the CardioSeal Septal
Occluder can be appropriately controlled. Integral to the facility will be a
Class 10,000 clean room for the final manufacture of the device. See "Risk
Factors--Limited Manufacturing History; Dependence on Third Party
Manufacturers."
 
Competition. The Company believes that only three companies, Microvena
Corporation, Dr. Osypka GmbH, and Pediatric Cardiology Custom Medical Devices
are actively developing competitive devices and that none of these companies
currently has a product on the market.
 
PATENTS AND PROPRIETARY TECHNOLOGY
 
The Company seeks to protect its technology through the use of patents and
trade secrets. The Company is the owner or licensee of eight issued United
States patents, and corresponding foreign patents, relating to its stents, the
SNF, the
 
                                       31
<PAGE>
 
septal repair device and nitinol radiopaque markers. The Company has received a
notice of allowance from the United States Patent and Trademark Office on a
ninth United States patent application. In addition, the Company has pending
applications for additional patents in the United States and abroad. The
Company's owned United States and foreign patents and patent applications cover
its stents, methods of manufacturing its stents, methods and devices for
inserting its stents, its SNF and devices for inserting its SNF. The expiration
dates of the Company's patents relating to its stents range from 2012 to 2013.
The patent for its vena cava filters expires in 2001 and the patent for its
radiopaque markers expires in 2014. In addition, the Company is the exclusive
licensee under certain patents relating to the CardioSeal Septal Occluder and
methods for repairing cardiac and vascular defects. The Company also holds
licenses to certain technology used in the SNF and in nitinol septal repair
devices. See "--Licensed Technology; Royalty Obligations."
 
There can be no assurance that the Company's pending patent applications in the
United States and abroad will be granted. No assurance can be given that
patents issued to or licensed by or to the Company will not be challenged,
invalidated or circumvented, or that the rights granted thereunder will provide
any competitive advantage. The Company could incur substantial costs in
defending any patent infringement suit or in asserting any patent rights,
including those granted by third parties. Any adverse outcome could subject the
Company to significant liabilities to third parties, require disputed rights to
be licensed from third parties, or require the Company to cease selling its
devices.
 
The Company also relies on trade secrets and technical know-how in the
development and manufacture of its devices, which it seeks to protect, in part,
through confidentiality agreements with its employees, consultants and other
parties. The Company's agreements with its employees and consultants generally
require such individuals to assign to the Company any inventions conceived or
reduced to practice by them while employed or retained by the Company. There
can be no assurance, however, that these agreements will provide meaningful
protection or adequate remedies for the Company in the event of unauthorized
use, transfer or disclosure of such information or inventions.
 
The employment agreements between the Company and Mr. Kleshinski, Vice
President of Research and Development, and Dr. Harry, Vice President of
Research Engineering, while requiring that their inventions be assigned to the
Company, provide that the Company is obligated to pay certain royalties to
Messrs. Kleshinski and Harry based on sales or licenses of products where
either Mr. Kleshinski or Dr. Harry, as the case may be, was the sole or joint
inventor.
 
The Company has seven trademarks, two of which are registered in the United
States Patent and Trademark Office.
 
LICENSED TECHNOLOGY; ROYALTY OBLIGATIONS
 
In connection with its septal repair device, the Company has obtained an
exclusive worldwide license from Children's Medical Center Corporation under
United States patents entitled "Occluder and Method for Repair of Cardiac and
Vascular Defects" and "Occluder for Repair of Cardiac and Vascular Defects" and
the respective corresponding foreign patents, patent applications and
associated know-how. The license agreement provides for royalty payments of
five percent based on net sales of the Company's CardioSeal Septal Occluder
until the end of the term of the patents or termination of the agreement. The
patents expire in September 2012 and June 2012, respectively. Pursuant to the
license agreement, the Company is required to achieve certain milestones in
exploiting the patent rights. The Company has achieved all required milestones
to date. If the Company fails to achieve the milestones, Children's Medical
Center Corporation may terminate the license agreement. The Company also has a
royalty-free, worldwide sublicense under the United States patent entitled
"System for the Percutaneous Transluminal Front-End Loading Delivery and
Retrieval of a Prosthetic Occluder" and its corresponding foreign patents and
associated know-how. The sublicense is exclusive in the field of the repair of
atrial septal defects and nonexclusive in certain other fields. The Company has
also obtained an exclusive worldwide license from Lloyd A. Marks, M.D. under
the United States patent entitled "Aperture Occlusion Device". The license
agreement with Dr. Marks provides for royalty payments based on net sales of
nitinol septal repair devices which are covered by the patent until the end of
term of the patent in 2011. Certain minimum royalty payments must be paid
regardless of net sales. Dr. Marks was also issued warrants to purchase 5,263
shares of Common Stock, which warrants are accompanied by certain "piggy-back"
registration rights. See "Description of Capital Stock--Registration Rights."
 
In connection with the Simon Nitinol Filter, the Company entered into a
Technology Purchase Agreement dated April 14, 1987 with Morris Simon, M.D., the
Company's Scientific Director and co-founder. Pursuant to the agreement, Dr.
 
                                       32
<PAGE>
 
Simon assigned all the technology relating to the SNF to the Company in
exchange for certain royalty payments based on net sales of technology invented
by Dr. Simon relating to the SNF, to continue perpetually unless the agreement
is sooner terminated. Dr. Simon agreed not to compete with the Company in the
vena cava filter market during the term of the agreement. In connection with
the agreement, Beth Israel Hospital Association granted the Company an
exclusive worldwide license under U.S. patent entitled "Blood Clot Filter". In
consideration for the license, Dr. Simon assigned a percentage of his royalty
payments from the Company to Beth Israel Hospital Association.
 
Pursuant to their respective employment agreements, the Company has agreed to
pay royalties of one to five percent to Messrs. Kleshinski and Harry based on
sales or licenses of products where either Mr. Kleshinski or Dr. Harry, as the
case may be, was the sole or joint inventor. See Note 8 of Notes to the
Consolidated Financial Statements. The Company is not obligated to pay
royalties to Mr. Kleshinski with respect to the Company's stents or vena cava
filters or to Dr. Harry with respect to the Company's devices which were being
sold prior to January 1994 unless Dr. Harry's inventions result in an increased
sales price to the Company. See "Management--Employment Agreements."
 
AGREEMENTS WITH BOSTON SCIENTIFIC AND BARD
 
Boston Scientific
 
In November 1994, NMT entered into an agreement with Boston Scientific,
pertaining to its stent technology. Under the terms of the agreement, NMT
granted to Boston Scientific exclusive worldwide rights to develop,
manufacture, market and distribute products incorporating NMT's stent
technology. Boston Scientific has the right to market and advertise products
based on the Company's stent technology exclusively under its own name and the
Company has no right to any trademarks or tradenames developed by Boston
Scientific. Boston Scientific has exclusive control over, and is responsible
for, funding product development, manufacturing scale-up, clinical trials,
marketing and distribution worldwide. The agreement obligates Boston Scientific
to use diligent efforts in a commercially reasonable manner to develop,
manufacture and market products using NMT's stent technology; however, there
can be no assurance that Boston Scientific will develop the Company's stents
for any particular application. In addition, Boston Scientific is not
prohibited from developing or selling competing stents. See "Risk Factors--
Dependence Upon Collaborators."
 
Boston Scientific is obligated to pay NMT a percentage of revenue from the sale
of products using NMT's stent technology. If the fees payable are less than
certain minimum levels, Boston Scientific must pay the difference or NMT can
elect to make the license non-exclusive. The license fees may be reduced in the
event a competing stent with a similar design, as defined in the agreement,
acquires a 10% or greater sales share with respect to any particular
application. Boston Scientific is also obligated to make payments upon the
occurrence of certain developmental events and the achievement of certain
manufacturing cost reductions, and reimburse certain development costs.
 
The term of the agreement is for the longer of 20 years from market launch or
the date on which the last NMT patent relating to stents expires. Boston
Scientific also has the perpetual non-exclusive and royalty-free right to
manufacture, use and sell all products as to which it has previously paid
licensing fees and on products for which all applicable patents have expired or
have been held invalid. Such additional rights granted to Boston Scientific
survive termination of the agreement.
 
Bard
 
The Company has entered into strategic distribution agreements with Bard
Radiology (as amended, the "Bard Radiology Agreement") and Bard International
(the "Bard International Agreement") to distribute the SNF in the United States
and certain other countries.
 
The Bard Radiology Agreement, signed in May 1992 and amended in February 1993
and October 1995, grants Bard Radiology the exclusive right to distribute the
Simon Nitinol Filter, and any changes, improvements or modifications thereto,
in the United States and certain other countries for a five year term renewable
by Bard Radiology for additional five year terms thereafter. The Company also
granted Bard Radiology a right of first offer to obtain exclusive distribution
rights in the United States for any new devices developed by the Company that
may be marketed to interventional radiologists and for which NMT desires to
enter into an exclusive distributorship within the United States. The Company
sells the SNF to Bard Radiology at determined prices and Bard Radiology is
required to purchase certain minimums to maintain its exclusivity. Pursuant to
the Bard Radiology Agreement, Bard Radiology is obligated to provide the
Company with quarterly purchase orders in substantial conformity with its
purchase forecasts
 
                                       33
<PAGE>
 
submitted to the Company. Bard Radiology has further agreed not to compete with
the Company in the vena cava filter market during the term of the agreement and
for two years after termination. The Company has agreed not to make or sell any
competing device as long as Bard maintains its exclusivity under the agreement.
 
The Bard International Agreement, signed in November 1995, grants Bard
International the exclusive right to distribute the Simon Nitinol Filter, and
any changes, improvements or modifications thereto, worldwide (excluding the
United States and certain other countries) for a five year term which is
automatically renewed for successive one year periods unless terminated by
either party. The Company sells the SNF to Bard International at determined
prices and Bard International is required to make certain minimum purchases
which, if not met, could result in termination of the agreement by the Company.
Pursuant to the Bard International Agreement, Bard International is obligated
to provide the Company with quarterly purchase orders in substantial conformity
with its forecasts submitted to the Company. Bard International has further
agreed not to compete with the Company in the vena cava filter market during
the term of the Bard International Agreement.
 
GOVERNMENT REGULATION
 
The manufacture and sale of medical devices intended for commercial
distribution are subject to extensive governmental regulations in the United
States. Medical devices are regulated in the United States by the FDA under the
FDC Act and generally require pre-market clearance or pre-market approval prior
to commercial distribution. In addition, certain material changes or
modifications to medical devices also are subject to FDA review and clearance
or approval. Pursuant to the FDC Act, the FDA regulates the research, testing,
manufacture, safety, labeling, storage, record keeping, advertising,
distribution and production of medical devices in the United States.
Noncompliance with applicable requirements can result in failure of the
government to grant pre-market clearance or approval for devices, withdrawal of
approvals, total or partial suspension of production, fines, injunctions, civil
penalties, recall or seizure of products, and criminal prosecution. The FDA
also has the authority to request repair, replacement or refund of the cost of
any device manufactured or distributed by the Company.
 
Medical devices are classified into one of three classes, Class I, II or III,
on the basis of the controls deemed by the FDA to be necessary to reasonably
ensure their safety and effectiveness. Class I devices are subject to general
controls and Class II devices are subject to general and to special controls
(e.g., performance standards, postmarket surveillance, patient registries, and
FDA guidelines). Generally, Class III devices are those that must receive pre-
market approval by the FDA to ensure their safety and effectiveness (e.g.,
life-sustaining, life-supporting and implantable devices, or new devices which
have not been found to be substantially equivalent to legally marketed
devices), and require clinical testing to ensure safety and effectiveness and
FDA approval prior to marketing and distribution. The FDA also has the
authority to require clinical testing of Class I and Class II devices. A PMA
application must be filed if a proposed device is not substantially equivalent
to a legally marketed predicate device or if it is a Class III device for which
the FDA has called for such applications.
 
If human clinical trials of a device are required and if the device presents a
"significant risk," the manufacturer or distributor of the device is required
to file an IDE application with the FDA prior to commencing human clinical
trials. The IDE application must be supported by data, typically the results of
animal and, possibly, mechanical testing. If the IDE application is approved by
the FDA, human clinical trials may begin at a specific number of
investigational sites with a maximum number of patients, as approved by the
agency. Sponsors of clinical trials are permitted to sell those devices
distributed in the course of the study provided such costs do not exceed
recovery of the costs of manufacture, research, development and handling. The
clinical trials must be conducted under the auspices of an independent
institutional review board ("IRB") established pursuant to FDA regulations. If
one or more IRBs determine that a clinical trial involves a "nonsignificant
risk" device, the sponsor of the study is not required to obtain FDA approval
of an IDE application before beginning the study. However, prior IRB approval
of the study is required and the study must be conducted in compliance with the
applicable FDA regulations, including, but not limited to, FDA's regulations
regarding the protection of human subjects.
 
Generally, before a new device can be introduced into the market in the United
States, the manufacturer or distributor must obtain FDA clearance of a pre-
market notification ("510(k) notification") submission or approval of a PMA
application. If a medical device manufacturer or distributor can establish that
a device is "substantially equivalent" to a legally marketed Class I or Class
II device, or to a Class III device for which the FDA has not called
 
                                       34
<PAGE>
 
for PMAs, the manufacturer or distributor may seek clearance from the FDA to
market the device by filing a 510(k) notification. The 510(k) notification may
need to be supported by appropriate data establishing the claim of substantial
equivalence to the satisfaction of the FDA. The FDA recently has been requiring
a more rigorous demonstration of substantial equivalence.
 
Following submission of the 510(k) notification, the manufacturer or
distributor may not place the device into commercial distribution until an
order is issued by the FDA. At this time, the FDA typically responds to the
submission of a 510(k) notification within 90 to 200 days, but it may take
longer. An FDA order may declare that the device is substantially equivalent to
a legally marketed device and allow the proposed device to be marketed in the
United States. The FDA, however, may determine that the proposed device is not
substantially equivalent or require further information, including clinical
data, to make a determination regarding substantial equivalence. Such
determination or request for additional information could delay market
introduction of the product that is the subject of the 510(k) notification. For
any devices that are cleared through the 510(k) process, modifications or
enhancements that could significantly affect safety or effectiveness, or
constitute a major change in the intended use of the device, will require new
510(k) submissions.
 
If a manufacturer or distributor of medical devices cannot establish that a
proposed device is substantially equivalent to a legally marketed device, the
manufacturer or distributor must seek pre-market approval of the proposed
device through submission of a PMA application. A PMA application must be
supported by extensive data, including preclinical and clinical trial data, as
well as extensive literature to prove the safety and effectiveness of the
device. Following receipt of a PMA application, if the FDA determines that the
application is sufficiently complete to permit a substantive review, the agency
will "file" the application. Under the FDC Act, the FDA has 180 days to review
a filed PMA application, although the review of an application more often
occurs over a protracted time period, and generally takes approximately two
years or more from the filing date to complete.
 
The PMA approval process is expensive, uncertain and lengthy. A number of
devices for which pre-market approval has been sought have never been approved
for marketing. The review time is often significantly extended by the FDA,
which may require more information or clarification of information already
provided in the submission. During the review period, an advisory committee
likely will be convened by the FDA to review and evaluate the application and
provide recommendations to the agency as to whether the device should be
approved. In addition, the FDA will inspect the manufacturing facility to
ensure compliance with the GMP regulations for medical devices prior to
approval of the PMA application. If granted, the approval may include
significant limitations on the indicated uses for which a product may be
marketed. The FDA's regulations require agency approval of a PMA supplement for
certain changes if they affect the safety and effectiveness of the device,
including, but not limited to, new indications for use; labeling changes; the
use of a different facility to manufacture, process, or package the device.
 
Certain Class III devices that were on the market before May 28, 1976
("preamendments Class III devices"), and devices that are determined to be
substantially equivalent to them, can be brought to market through the 510(k)
process until the FDA, by regulation, calls for PMA applications for the
devices. Generally, the FDA will not grant 510(k) clearance for such devices
unless the facilities at which they are manufactured successfully undergo an
FDA pre-approval GMP inspection. In addition, the FDC Act requires the FDA
either to down-classify preamendments Class III devices to Class I or Class II,
or to publish a classification regulation retaining the devices in Class III.
Manufacturers of preamendments Class III devices that the FDA retains in Class
III must have PMA applications accepted by the FDA for filing within 90 days
after the publication of a final regulation in which the FDA calls for PMAs. If
the FDA calls for a PMA for a preamendments Class III device, a PMA must be
submitted for the device even if the device has already received 510(k) pre-
market clearance; however, if the FDA down-classifies a preamendments Class III
device to Class I or Class II, a PMA application is not required. The FDA's
reclassification determinations are to be based on safety and effectiveness
information that manufacturers of certain preamendments Class III devices are
required to submit to the FDA as set forth in two FDA orders published in
August 1995.
 
The Company's first product, the SNF, underwent significant clinical
investigation under an IDE and received 510(k) clearance in 1990. Subsequent
improvements and modifications to the SNF have also received 510(k) clearance
from the FDA. The Company currently is preparing a 510(k) submission seeking
clearance for additional modifications. There can be no assurances that such
future modifications of the device will obtain clearance. The 510(k) clearances
for the SNF were based on substantial equivalence of the device to other
cardiovascular intravascular filters, which are
 
                                       35
<PAGE>
 
preamendments Class III devices. The FDA has characterized cardiovascular
intravascular filters as not likely candidates for down-classification under
the reclassification provisions of the FDC Act pertaining to preamendments
Class III devices. Thus, it is likely that the FDA will call for PMAs for
cardiovascular intravascular filters and that the Company will be required to
have a PMA for the SNF accepted for filing by the FDA within 90 days after the
date that the FDA calls for PMAs. There can be no assurance that the Company
will be able to file a PMA within the prescribed time period or that any data
and information submitted in a PMA will be adequate to support approval of the
device. The Company believes it would be able to file a PMA within a 90 day
time frame utilizing its existing clinical data. If the FDA were to require the
Company to conduct a new clinical study to support the safety and efficacy of
the SNF, the preparation of the PMA would take substantially longer than 90
days. Failure of the Company to submit a PMA and have it accepted for filing by
the FDA within the required timeframe could result in the Company being
required to cease commercial distribution of the SNF. Upon timely filing of a
PMA, the Company believes, based on FDA's announced position as to certain
other preamendments class III medical devices, that the FDA would permit
continued commercial distribution of the SNF during the time necessary to
review the PMA. There can be no assurance, however, that FDA would permit
continued commercial distribution of the SNF pending FDA's review of a PMA for
that device nor can there be any assurance given that the FDA would approve a
PMA submitted for the SNF. Any denial by the FDA of a PMA for the SNF would
result in the Company being required to cease commercial distribution of the
SNF. Any requirement by the agency that the Company cease commercial
distribution of the SNF would have a material adverse effect on the Company's
business, financial condition and results of operations. On July 22, 1996, the
Company submitted safety and effectiveness data to the FDA in accordance with
one of the August 1995 FDA orders addressing the classification of
preamendments Class III devices. The FDA will use this data, along with data
furnished by manufacturers of similar devices, in determining the final
classification of the SNF.
 
Boston Scientific is responsible for applying for registrations and regulatory
approvals it deems necessary for NMT's stents. It is believed that each of the
vascular indications for the stent (coronary arteries, carotid arteries,
peripheral vascular, AAA and peripheral vascular stent grafts) will require
separate PMA applications prior to commercialization in the United States.
Boston Scientific has commenced clinical trials in Europe of NMT's stents for
peripheral vascular and peripheral vascular stent grafts applications.
Commencing clinical trials in Europe is a strategy, now commonly used in the
industry, which allows significant information to be gained and may enhance the
ability to develop a United States based protocol of study.
 
The Company believes, based on competitive product filings, that the non-
vascular stent indications will qualify for the 510(k) notification. The
filings for esophageal and biliary indications will also be the responsibility
of Boston Scientific. There can be no assurance that the FDA will agree that
the non-vascular stent indications may be cleared through the 510(k) process
or, if a 510(k) notification is submitted, that the non-vascular stent will be
deemed substantially equivalent to a legally marketed predicate device. In
addition, there can be no assurance that Boston Scientific will submit
regulatory filings for any particular indications for the stents, or that
Boston Scientific will submit regulatory filings in every country in which the
stents could be marketed. See "Risk Factors--Government Regulation; Product
Approvals Uncertain."
 
The septal repair device will also be subject to the PMA process in the United
States. NMT submitted an application for an IDE to the FDA in May 1996. In
August 1996, the Company received conditional approval of its IDE to conduct a
multi-center, pivotal clinical trial in the United States for ASDs. The
Company's approval is conditioned on minor modifications to the investigational
plan recommended by the FDA and accepted by the Company, and the submission of
additional data to the FDA within 45 days, which the Company submitted in
September 1996. Submission of an IDE does not give assurance that the FDA will
approve the IDE and, if it is approved, there can be no assurance that the FDA
will determine that the data derived from these studies support the safety and
efficacy of the device or warrant the continuation of clinical studies.
 
There can be no assurance that the Company will be able to obtain necessary
regulatory approvals or clearances for its products on a timely basis or at
all, and delays in receipt of or failure to receive such approvals or
clearances, the loss of previously received approvals or clearances,
limitations on intended use imposed as a condition of such approvals or
clearances, or failure to comply with existing or future regulatory
requirements could have a material adverse effect on the Company's business,
financial condition and results of operations.
 
Currently, the Company is dependent on third parties to manufacture its
products for use in clinical trials and commercial distribution. These third
parties are required to register with the FDA as medical device manufacturers.
 
                                       36
<PAGE>
 
The third party manufacturers are inspected by the FDA for compliance with the
GMP and other applicable regulations. In addition, the third party
manufacturers will be specifically inspected by the FDA before the agency will
approve a PMA application for the Company's products. There can be no assurance
that the third party manufacturers on which the Company depends for the
manufacture of its products will be able to come into compliance with the GMP
regulations at the time of the preapproval inspection or to maintain such
compliance.
 
The Company currently intends to manufacture its septal repair device. The
Company's manufacturing facilities will be required to be registered with the
FDA and will be subject to the GMP regulations. FDA approval will be required
before the Company could begin commercial distribution of medical devices from
its own manufacturing facilities.
 
Any products manufactured or distributed by the Company are subject to
continuing regulation by the FDA including record keeping requirements,
reporting of adverse experience with the use of the device, post-market
surveillance, post-market registry and other actions deemed necessary by the
FDA.
 
The Company is required to provide information to the FDA on deaths or serious
injuries alleged to have been associated with the use of its medical devices,
as well as product malfunctions that would likely cause or contribute to death
or serious injury if the malfunction were to recur in a similar device marketed
by the manufacturer. In addition, the FDA prohibits an approved device from
being marketed or promoted for unapproved uses. If the FDA believes that a
company is not in compliance with the law, it can initiate proceedings to
detain or seize products, issue a recall, enjoin future violations and assess
civil and criminal penalties against the Company, its officers and its
employees. Failure to comply with applicable regulatory requirements could have
a material adverse effect on the Company's business, financial condition and
results of operation.
 
The advertising of most FDA-regulated products is subject to both FDA and
Federal Trade Commission jurisdiction. The Company also is subject to
regulation by the Occupational Safety and Health Administration and by other
governmental entities.
 
Sales of medical device products outside the United States are subject to
foreign regulatory requirements that vary widely from country to country. The
time required to obtain approvals required by foreign countries may be longer
or shorter than that required for FDA approval, and requirements for licensing
may differ from FDA requirements. Failure to comply with foreign regulatory
requirements also could have a material adverse effect on the Company's
business, financial condition and results of operations.
 
The current regulatory environment in Europe for medical devices differs
significantly from that in the United States. There is currently no universally
accepted definition of a medical device in Europe and there is no common
approach to medical device regulation among the various countries. There are
several different regulatory regimes operating within the different European
countries. Regulatory requirements for medical devices range from no
regulations in some countries to rigorous regulations approaching the
requirements of the FDA's regulations for Class III medical devices. Several
countries require that device safety be demonstrated prior to approval for
commercialization. The regulatory environment in certain European countries is
expected to undergo major changes as a result of the creation of medical device
directives by the European Union.
 
Regulations regarding the manufacture and sale of the Company's products are
subject to change. The Company cannot predict what impact, if any, such changes
might have on its business, financial condition or results of operations.
 
The Company plans to implement policies and procedures intended to allow the
Company to receive ISO 9000 certification. ISO 9000 certification is based on
adherence to established standards in the areas of quality assurance and
manufacturing process control. This certification is a significant European
Union sales requirement that will permit the Company or its collaborators to
affix the prescribed "CE" mark to its products. The European Union has
promulgated rules which require that medical products receive a CE mark by mid-
1998 in order to commercially market and sell medical products in the countries
of the European Economic Area. Failure to receive CE mark certification will
prohibit the Company from selling its products in Europe. There can be no
assurance that the Company will be successful in meeting their certification
requirements.
 
                                       37
<PAGE>
 
THIRD PARTY REIMBURSEMENT
 
Health care providers, such as hospitals and physicians, that purchase medical
devices such as stents, generally rely on third party payers, principally
Medicare, Medicaid and private health insurance plans, to reimburse all or part
of the costs and fees associated with the Company's devices. Major third party
payers reimburse inpatient medical treatment, including all operating costs and
all furnished items or services, including devices such as the Company's, at a
prospectively fixed rate based on the DRG that covers such treatment as
established by the federal Health Care Financing Administration. For
interventional procedures, the fixed rate of reimbursement is based on the
procedure or procedures performed and is unrelated to the specific devices used
in that procedure. The amount of profit relating to the procedure may be
reduced by the use of the Company's devices. If a procedure is not covered by a
DRG, certain third party payers may deny reimbursement. Alternatively, a DRG
may be assigned that does not reflect the costs associated with the use of the
Company's devices, resulting in underreimbursement. If, for any reason, the
Company's products were not to be reimbursed by third party payers, the
Company's ability to sell its products may be materially adversely affected.
Mounting concerns about rising health care costs may cause more restrictive
coverage and reimbursement policies to be implemented in the future. Several
states and the federal government are investigating a variety of alternatives
to reform the health care delivery system and further reduce and control health
care spending. These reform efforts include proposals to limit spending on
health care items and services, limit coverage for new technology and limit or
control directly the price health care providers and drug and device
manufacturers may charge for their services and products. The Company believes
that domestic health care providers currently are reimbursed for the cost of
purchasing the Company's SNF. In the international market, reimbursement by
private third party medical insurance providers, including governmental
insurers and providers, varies from country to country. In certain countries,
the Company's ability to achieve significant market penetration may depend upon
the availability of third party governmental reimbursement. The Company's
independent distributors, and the health care providers to whom such
distributors sell, obtain any necessary reimbursement approvals. There can be
no assurance as to either United States or foreign markets that third party
reimbursement and coverage will be available and adequate, that current
reimbursement amounts will not be decreased in the future or that future
legislation, regulation or reimbursement policies of third party payers will
not occur. See "Risk Factors--Uncertain Availability of Third Party
Reimbursement; Possible Health Care Reforms."
 
EMPLOYEES
 
As of August 31, 1996, NMT employed 33 full-time and two part-time employees.
Further staff will be added at the completion of the Offering as required by
the demands of the planned manufacturing scale-up for the septal repair device
and other development programs. No employees are covered by collective
bargaining agreements, and the Company believes it maintains good relations
with its employees.
 
FACILITIES
 
The Company currently occupies approximately 7,500 square feet of laboratory,
pilot manufacturing and office space in Boston. The Company has entered into a
lease for a new manufacturing, laboratory and administrative facility in Boston
comprising approximately 27,000 square feet which it expects to occupy
commencing in the third quarter of 1996.
 
LEGAL PROCEEDINGS
 
The Company has no material pending legal proceedings.
 
PRODUCT LIABILITY AND INSURANCE
 
The Company's business involves the risk of product liability claims. The
Company has not experienced any product liability claims to date. Although the
Company maintains product liability insurance with coverage limits of $5
million per occurrence and an annual aggregate maximum of $5 million, there can
be no assurance that product liability claims will not exceed such insurance
coverage limits, which could have a material adverse effect on the Company's
business, financial condition and results of operations, or that such insurance
will be available on commercially reasonably terms or at all. See "Risk
Factors--Product Liability Risks; Insurance."
 
                                       38
<PAGE>
 
                                   MANAGEMENT
 
The following table sets forth certain information with respect to certain
directors, executive officers and other key personnel of the Company:
 
Directors and Executive Officers
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
NAME                   AGE POSITION
- -------------------------------------------------------------------------------
<S>                    <C> <C>
Thomas M. Tully (1)     50 President, Chief Executive Officer and Director
David A. Chazanovitz    45 President, Septal Repair Division
Theodore I. Pincus      53 Executive Vice President and Chief Financial Officer
C. Leonard Gordon       67 Chairman of the Board
 (1)(2)
Morris Simon, M.D.      70 Director and Scientific Director
Michael C. Brooks (2)   51 Director
Robert G. Brown         53 Director
R. John Fletcher        50 Director
 (2)(3)
Jeffrey R. Jay, M.D.    38 Director
 (1)(3)
- -------
(1) Member of the Compensation Committee
(2) Member of the Audit Committee
(3) Member of the Stock Option Committee
 
Key Personnel
 
- -------------------------------------------------------------------------------
<CAPTION>
NAME                   AGE POSITION
- -------------------------------------------------------------------------------
<S>                    <C> <C>
Sherrie Coval-Gold-     39 Vice President of Regulatory Affairs
 smith
Rudy Davis              44 Vice President of Marketing and Sales,
                           Septal Repair Division
Jason Harry, Ph.D.      38 Vice President of Research Engineering
Stephen Kleshinski      43 Vice President of Research and Development
Eugene O'Donnell        49 Vice President for Vena Cava Filter Operations
Carol Ryan              33 Vice President of Product Development,
                           Septal Repair Division
James W. Sheppard       37 Director of Operations, Septal Repair Division
</TABLE>
 
THOMAS M. TULLY has served as President, Chief Executive Officer and Director
of NMT since January 1996. From June 1995 to January 1996 Mr. Tully served as a
consultant to the Company. From May 1994 to April 1995, Mr. Tully served as
President of the Institute of Molecular Biology, a biotechnology company
focused on tissue repair and regeneration and from August 1991 to March 1994,
Mr. Tully served as President of Organogenesis, Inc., a biotechnology company
focused on the commercialization of medical device applications of tissue
engineering. Prior to that Mr. Tully served for three years as the President of
the Schneider division of Pfizer, Inc., which concentrates on interventional
radiology, and cardiology, and spent nine years in various executive positions
in consumer products and medical devices at Johnson & Johnson, Inc. and was the
founding President of Johnson & Johnson Interventional Systems, an
interventional medicine company.
 
DAVID A. CHAZANOVITZ has served as President of NMT's Septal Repair Division
since January 1996. He has over 20 years of experience in the medical products
business. Mr. Chazanovitz served as President and Chief Executive Officer of
InnerVentions from April 1995 until January 1996. Mr. Chazanovitz was employed
by Bard from 1979 to 1995 in various positions including President of the USCI
Angiography Division, Bard Electrophysiology Division and Bard Ventures
Division where he was a founder. During his last two and one-half years at Bard
Mr. Chazanovitz had overall responsibility for the septal defect repair
program.
 
THEODORE I. PINCUS has served as Chief Financial Officer of the Company, as a
part-time employee since June 1995 and became an Executive Vice President and a
full-time employee in May 1996. From September 1993 to April 1996 he served as
Chief Financial Officer of Immunotherapy, Inc., a privately-held
biopharmaceutical company, and for the
 
                                       39
<PAGE>
 
past six years until joining the Company as a full-time employee he has been
President of The Pincus Group, a management consulting firm. From August 1992
to March 1995 he also served as the Chief Financial Officer of Biofield Corp.,
then a privately-held medical device company. Mr. Pincus is a Certified Public
Accountant and from 1985 to 1989 he was a partner at Ernst & Young, an
accounting firm.
 
MORRIS SIMON, M.D., a co-founder of NMT, is a Director and Scientific Director
of the Company. Since 1973, Dr. Simon has been a Director of Clinical
Radiology, Department of Radiology, at Beth Israel Hospital, and since 1976, a
Professor of Radiology at Harvard Medical School.
 
C. LEONARD GORDON, a co-founder of NMT, served as the Company's Chief Executive
Officer and President, from August 1990 to January 1996. Mr. Gordon has served
as a Director of the Company since its inception in 1986 and as Chairman of the
Board of the Company since January 1996. Mr. Gordon has been engaged in venture
capital enterprises for more than 10 years, particularly in the field of new
medical technologies and devices. He was co-founder and Chief Executive Officer
of (i) Oxigene, Inc. a publicly-traded company engaged in the design and
development of drugs and (ii) Biofield Corp., a publicly-traded medical device
company that has developed a breast cancer detection system. Mr. Gordon
presently serves as Chairman of the Board of Biofield Corp. and Chairman of the
Board of Immunotherapy, Inc., a privately-held biotechnology company. Mr.
Gordon has practiced law in New York City for approximately 41 years and is
currently of counsel to Gordon Altman Butowsky Weitzen Shalov & Wein.
 
MICHAEL C. BROOKS has been a director of the Company since March 1996. Mr.
Brooks was appointed as a Director as a designee selected by the holders of the
Company's Convertible Preferred Stock. He has been a General Partner of J.H.
Whitney & Co., a venture capital partnership, since January 1985 and currently
serves as Managing Partner. Mr. Brooks is also a director of SunGard Data
Systems, Inc., a computer software and services company, DecisionOne Holdings
Corp., a multivendor computer service company, P-Com, Inc., a millimeter wave
wireless system technology company, and several private companies.
 
ROBERT G. BROWN has been a Director of the Company since 1992. From 1987 to
1992 he served as President and Chief Operating Officer of NMT. Prior to
joining NMT, Mr. Brown spent approximately 15 years in various marketing and
business development positions with the Boston Scientific Corporation.
 
R. JOHN FLETCHER was elected a Director of the Company in January 1996. Mr.
Fletcher is the founder and Chief Executive Officer of Fletcher Spaght, Inc., a
management consulting company which specializes in strategic development for
health care and high technology businesses. Prior to founding Fletcher Spaght,
Inc. in 1983, he was a senior member of The Boston Consulting Group, a
management consulting company. Mr. Fletcher was the Chairman of the Board of
InnerVentions from its inception. Mr. Fletcher is a director of AutoImmune, a
biotechnology company developing orally administered pharmaceutical products
and Bachman Information Systems, Inc., a software development company.
 
JEFFREY R. JAY, M.D. has been a Director of the Company since March 1996. Dr.
Jay was appointed as a director as a designee selected by the holders of the
Company's Convertible Preferred Stock. Since 1993, he has been a General
Partner of J.H. Whitney & Co., a venture capital partnership. From 1988 to
1993, Dr. Jay was employed by Canaan Partners, a venture capital firm. Dr. Jay
currently is a national advisory member of the American Medical Association's
Physician Capital Source Committee and is on the Board of CRA Managed Care,
Inc., a workers compensation managed care company, UtiliMed, a diagnostic
imaging managed care company, and Advance ParadigM, Inc., a health benefits
manager.
 
SHERRIE COVAL-GOLDSMITH, Vice President of Regulatory Affairs, joined the
Company in February 1996. From 1995 until January 1996, Ms. Coval-Goldsmith had
been Director of Regulatory Affairs for T-Cell Sciences, Inc., a developmental
stage biotechnology company. From 1994 until 1995, she had been Director of
Regulatory Affairs of Institute of Molecular Biology, Inc., a biotechnology
company focused on tissue repair and regeneration. Prior to that, Ms. Coval-
Goldsmith had over 10 years of clinical research experience, including serving
as Manager of Clinical Research and Regulatory Affairs for the Stryker Biotech
Division of Stryker Corp., a medical device company, where she had
responsibility for an advanced implantable device.
 
RUDY DAVIS joined the Company as its Vice President of Marketing and Sales,
Septal Repair Division in May 1996. During the past 11 years he has held
marketing positions of increasing responsibility with various divisions of
Bard, and is a co-inventor of the original Clamshell device. He is a registered
respiratory therapist with ten years clinical and administrative experience in
the Cardiology Department at the Catherine McAuley Health Center in Ann Arbor,
Michigan.
 
                                       40
<PAGE>
 
JASON HARRY, PH.D. joined NMT in July 1994 as Director of Engineering and
became Vice President of Research Engineering in January 1996. Dr. Harry has
been involved in biomedical engineering research and development for over 15
years. His fields of interest have included ocular mechanics, orthopaedics,
skeletal muscle biophysics and locomotion, and functional neural stimulation.
He worked for three years as a research engineer in the Orthopaedic
Biomechanics Laboratory of Beth Israel Hospital/Harvard Medical School.
Following his doctoral work at Harvard University, he was a member of the
engineering faculty at Brown University for five years. During that time, he
developed a research program based in part on the use of shape memory alloys in
medical devices, including a miniature neural electrode and a hip joint
prosthesis component.
 
STEPHEN KLESHINSKI, Vice President of Research and Development, joined NMT in
1987 as the Company's first employee. Mr. Kleshinski has 15 years of medical
experience in academic and commercial settings. From 1980 to 1987 he was
involved in academic medical research at Beth Israel Hospital/Harvard Medical
School. For the last eight years he has been responsible for all technical
aspects of product and process design and development for NMT.
 
EUGENE O'DONNELL was appointed Vice President for Vena Cava Filter Operations
effective January 1, 1996. Mr. O'Donnell previously served as General Manager
of the Company since November 1992. He joined the Company in 1990 as National
Sales Manager after the SNF became commercially available. Prior to joining
NMT, he spent nine years in a variety of sales and product marketing positions
with Boston Scientific. His experience includes over 19 years in the field of
cardiovascular medical devices.
 
CAROL RYAN has served as Vice President of Product Development, Septal Repair
Division, since February 1996. She has nine years of medical device engineering
experience with various divisions of Bard including both manufacturing and new
product development. During the past three and one-half years, she has had the
responsibility for management of the technical activities associated with the
re-design effort leading to the current septal repair device.
 
JAMES W. SHEPPARD joined NMT in March 1996 as Director of Operations, Septal
Repair Division. Mr. Sheppard has fourteen years of increasing responsibility
in medical device manufacturing, twelve of which were at Bard manufacturing
various cardiovascular devices including angiography, critical care and
electrophysiology catheters. While at Bard he established new manufacturing
facilities and organizations. More recently, Mr. Sheppard served as Director of
Manufacturing for Summit Technology, Inc., a company producing lasers for
vision correcting surgery.
 
COMMITTEES
 
The Board of Directors has a Compensation Committee which has authority to
review and approve all compensation arrangements, including annual incentive
awards for senior officers of the Company, an Audit Committee which has
authority to recommend annually to the Board of Directors the engagement of the
independent auditors of the Company and review the scope and results of the
audit, the adequacy of the Company's internal accounting controls and the
professional services furnished by the independent auditors and a Stock Option
Committee which administers the Company's stock option plans.
 
DIRECTORS COMPENSATION
 
All directors hold their offices until the next stockholders' meeting of the
Company and until their successors are elected and qualified. Directors who do
not otherwise receive compensation from the Company receive $4,000 per year and
all directors receive reimbursement of travel expenses. The Company has entered
into oral arrangements with C. Leonard Gordon, the Company's Chairman of the
Board, and Dr. Morris Simon, the Company's Scientific Director. See "Certain
Transactions."
 
LIMITATIONS ON DIRECTORS' LIABILITY AND INDEMNIFICATION
 
The Company's Amended and Restated Certificate of Incorporation, as amended,
limits the liability of directors to the maximum extent permitted by Delaware
law. Delaware law provides that directors of a corporation will not be
personally liable for monetary damages for breach of their fiduciary duties as
directors, except liability for (i) any breach of their duty of loyalty to the
corporation or its stockholders, (ii) acts or omissions not in good faith or
which
 
                                       41
<PAGE>
 
involve intentional misconduct or a knowing violation of law, (iii) unlawful
payments of dividends or unlawful stock repurchases or redemptions or (iv) any
transaction form which the director derived an improper personal benefit. Such
limitation of liability does not apply to liabilities arising under the federal
securities laws and does not affect the availability of equitable remedies such
as injunctive relief or rescission. The Company's Amended and Restated Bylaws
provide that the Company shall indemnify its directors and executive officers
and may indemnify its other officers and employees and other agents to the
fullest extent permitted by law.
 
At present, there is no pending litigation or proceeding involving a director
or officer of the Company in which indemnification is required or permitted and
the Company is not aware of any threatened litigation or proceeding that may
result in a claim for such indemnification.
 
EXECUTIVE COMPENSATION
 
The following table sets forth compensation paid or earned for the fiscal year
ended December 31, 1995 for (i) those persons who served as the Company's Chief
Executive Officer during the year ended December 31, 1995 and (ii) the three
other most highly compensated executive officers of the Company at December 31,
1995 (collectively, the "Named Executive Officers").
 
1995 SUMMARY COMPENSATION TABLE
 
                                             ----------------------------------
<TABLE>
<CAPTION>
                                              ANNUAL COMPENSATION
                                   --------------------------------------------
                                                         LONG-TERM
                                                      COMPENSATION
                                                            AWARDS
                                                      ------------
                                                        SECURITIES
                                                        UNDERLYING    ALL OTHER
                                   SALARY(1) BONUS(1)   OPTIONS(#) COMPENSATION
NAME AND PRINCIPAL POSITION        --------  -------  ------------ ------------
<S>                                <C>       <C>      <C>          <C>
Thomas M. Tully                    $45,000   $15,000         --           --
 President and Chief Executive
 Officer(2)
David A. Chazanovitz                20,000        --         --           --
 President, Septal Repair
 Division(3)
Theodore I. Pincus                  31,000    10,000     52,630           --
 Executive Vice President and
 Chief Financial Officer(4)
C. Leonard Gordon                  112,500     1,000    302,628       $4,000(7)
 Chairman of the Board and Former
 Chief Executive Officer(5)(6)
</TABLE>
- -------
(1) All four individuals listed were part-time consultants to the Company in
  1995.
(2) The present annual base salary is $200,000.
(3) The present annual base salary is $160,000.
(4) The present annual base salary is $160,000.
(5) The present annual rate of compensation as a consultant to the Company is
  $135,000.
(6) Does not include income as an "S" Corporation stockholder.
(7) Director's fees.
 
                                       42
<PAGE>
 
Option Grants in Last Fiscal Year
 
The following table sets forth certain information concerning options granted
to the Chief Executive Officer and the Named Executive Officers during the
fiscal year ended December 31, 1995, including information concerning the
potential realizable value of such options.
 
                                -----------------------------------------------
<TABLE>
<CAPTION>
                                      INDIVIDUAL GRANTS
                         -------------------------------------------
                                                                         POTENTIAL
                                     PERCENTAGE                      REALIZABLE VALUE
                                       OF TOTAL                      AT ASSUMED ANNUAL
                          NUMBER OF     OPTIONS  EXERCISE             RATES OF STOCK
                         SECURITIES  GRANTED TO   OR BASE                  PRICE
                         UNDERLYING INDIVIDUALS PRICE PER            APPRECIATION FOR
                            OPTIONS   IN FISCAL     SHARE EXPIRATION    OPTION TERM
                            GRANTED        YEAR ($/SHARE)       DATE    5%($)   10%($)
NAME                     ---------- ----------- --------- ---------- -------- --------
<S>                      <C>        <C>         <C>       <C>        <C>      <C>
Thomas M. Tully(1)             --        --          --          --        --       --
David A. Chazanovitz(2)        --        --          --          --        --       --
Theodore I. Pincus(3)      26,315       4.9%      $2.15    10/13/02  $ 23,033 $ 53,676
                           26,315       4.9        2.15    12/21/05    35,581   90,170
C. Leonard Gordon         210,525      39.0        2.15    10/13/02   184,265  429,417
</TABLE>
- -------
(1)In February 1996, options to purchase 263,157 shares of Common Stock at
$2.15 per share were granted and in May 1996 options to purchase 116,433 shares
of Common Stock at $6.95 per share were granted.
(2) In February 1996, options to purchase 118,421 shares of Common Stock at
    $2.15 per share were granted.
(3) In April 1996, additional options to purchase 39,473 shares of Common Stock
    at $2.15 per share were granted.
The fair market value of this stock on the date of the grant was $3.19 per
   share.
 
AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END OPTION
VALUES
 
The following table sets forth certain information concerning the number and
value of securities underlying exercisable and unexercisable stock options as
of the fiscal year ended December 31, 1995 by the Company's Chief Executive
Officer and the Named Executive Officers. Options for 15,789 shares at $.19 per
share were exercised by the Former Chief Executive Officer in September 1995.
There were no other exercises of stock options during the fiscal year ended
December 31, 1995.
 
                             --------------------------------------------------
<TABLE>
<CAPTION>
                         NUMBER            NUMBER OF SECURITIES
                      OF SHARES           UNDERLYING UNEXERCISED           VALUE OF UNEXERCISED
                       ACQUIRED                 OPTIONS AT                IN-THE-MONEY OPTIONS AT
                             ON    VALUE     DECEMBER 31, 1995             DECEMBER 31, 1995(4)
                       EXERCISE REALIZED EXERCISABLE    UNEXERCISABLE    EXERCISABLE UNEXERCISABLE
NAME                  --------- -------- -----------    -------------    ----------- -------------
<S>                   <C>       <C>      <C>            <C>              <C>         <C>
Thomas M. Tully              --       --          --               --             --            --
David A. Chazanovitz         --       --          --               --             --            --
Theodore I. Pincus           --       --       1,461(1)        51,168(1)          --            --
C. Leonard Gordon        15,789  $30,900     198,828(2)       103,800(3)    $103,024            --
</TABLE>
- -------
(1) Exercisable and unexercisable options are at $2.15 per share.
(2)Includes 26,315 options to purchase Common Stock at $.76 per share; 65,788
options to purchase Common Stock at $1.14 per share, and 106,725 options to
purchase Common Stock at $2.15 per share.
(3) All at $2.15 per share.
(4)Value is determined by subtracting the exercise price per share from the es-
timated fair market value at December 31, 1995 ($2.15 per share) as determined
by the Board of Directors, and multiplying by the number of shares subject to
the option.
 
EMPLOYMENT AGREEMENTS
 
Effective September 1, 1995, Thomas M. Tully became President and Chief
Executive Officer of the Company pursuant to an employment agreement dated
February 13, 1996. The agreement is for a term of three years, however, if Mr.
Tully is employed by the Company on June 1, 1998, the term will automatically
be extended until August 31,
 
                                       43
<PAGE>
 
1999, unless either party gives three months prior written notice. Pursuant to
his agreement, Mr. Tully receives a salary of $175,000 the first year until
August 31, 1996, $200,000 the second year and after September 1, 1997, a salary
of $250,000 per year. Mr. Tully is also eligible to receive bonus payments upon
the achievement by the Company of certain specified goals. In addition, upon
the closing of the acquisition of the septal repair technology, Mr. Tully
received a lump sum payment of $125,000 and non-qualified stock options to
purchase 263,157 shares of the Company's Common Stock, which options are
exercisable at $2.15 per share. Options to purchase 42,631 shares vested upon
execution of the agreement and the remaining options vest at a rate of 3.45%
per month and are accompanied by certain "piggy-back" registration rights. See
"--Options Granted Outside of the Plans" and "Description of Capital Stock--
Registration Rights." The options are exercisable for a period of ten years
after the vesting thereof and become immediately exercisable in the event of a
change of control of the Company. If Mr. Tully's employment is terminated due
to his death or disability, the number of options deemed to be exercisable
shall be an amount equal to the number of options exercisable at the date of
termination multiplied by two and the portion of the options due to become
exercisable on the first day of the month coincident with or next following the
date of termination, prorated for the number of days he was employed during
that month, shall become exercisable and all other unexercisable options shall
expire. Mr. Tully will forfeit all unexercisable options if the Company
terminates him either with or without cause. If the Company terminates Mr.
Tully's employment without cause, the Company will be obligated to continue to
pay his annual salary for a period of one year from termination. Mr. Tully has
agreed not to compete with the Company for a period of one year after he ceases
to be employed with the Company. Mr. Tully has agreed to serve on the Company's
Board of Directors upon request of the Company during the term of his
employment agreement.
 
Effective January 1, 1996, David A. Chazanovitz became President, Septal Repair
Division pursuant to a three-year employment agreement dated February 13, 1996.
Pursuant to his agreement, Mr. Chazanovitz receives a salary of $160,000 the
first year, $175,000 the second year and $185,000 the third year. Mr.
Chazanovitz is also eligible to receive bonus payments upon the achievement by
the Company of certain specified goals. In connection with his employment, Mr.
Chazanovitz received (i) non-qualified stock options to purchase 92,105 shares
of the Company's Common Stock at an exercise price of $2.15 per share, which
vest at a rate of 2.77% per month and (ii) options to purchase an aggregate of
up to 26,315 shares of the Company's Common Stock at an exercise price of $2.15
per share subject to vesting in the amounts and upon the earlier of (x) the
achievement of certain milestones as described in his employment agreement or
(y) December 31, 2000. See "--Options Granted Outside of the Plans." The
options are exercisable for a period of ten years after the vesting thereof and
become immediately exercisable in the event of a change of control of the
Company. If Mr. Chazanovitz' employment is terminated due to his death or
disability, the portion of the options due to become exercisable on the first
day of the month coincident with or next following the date of termination,
prorated for the number of days he was employed during the month, shall become
exercisable and all other unexercisable options shall expire. Mr. Chazanovitz
will forfeit all unexercisable options if the Company terminates his employment
with or without cause. If the Company terminates Mr. Chazanovitz' employment
without cause, the Company will be obligated to continue to pay his annual
salary for a period of six months from termination. Mr. Chazanovitz has agreed
not to compete with the Company for a period of one year after he ceases to be
employed by the Company.
 
Effective May 1996, Theodore I. Pincus became Executive Vice President and
Chief Financial Officer pursuant to a three-year employment agreement. Pursuant
to his employment agreement, Mr. Pincus receives a salary of $160,000 the first
year, $175,000 the second year and $185,000 the third year. In addition, Mr.
Pincus receives living expenses of $35,000 the first year and $20,000 the
second year, in lieu of receiving the Company's relocation benefits package.
Mr. Pincus is also eligible to receive bonus payments upon the achievement by
the Company of certain specified goals. In connection with his employment, Mr.
Pincus received non-qualified stock options to purchase 39,473 shares of Common
Stock of the Company at an exercise price of $2.15 per share. The options vest
in equal monthly installments over three years. See "--Options Granted Outside
of the Plans." The options are exercisable for a period of ten years after the
vesting thereof and become immediately exercisable in the event of a change of
control of the Company. If Mr. Pincus' employment is terminated due to his
death or disability, the portion of the options due to become exercisable on
the first day of the month coincident with or next following the date of
termination, prorated for the number of days he was employed during that month,
shall become exercisable and all other unexercisable options shall expire. Mr.
Pincus will forfeit all unexercisable options if the Company terminates his
employment either with or without cause. If the Company terminates Mr. Pincus'
employment without cause, the Company will be
 
                                       44
<PAGE>
 
obligated to continue to pay his annual salary for a period of six months after
termination. The Company loaned Mr. Pincus $65,000, which loan will be forgiven
over the next three years; provided, however, that (i) if Mr. Pincus is
terminated for cause (as defined in his employment agreement) the then-
outstanding loan together with interest at prime plus one percent shall become
immediately due and payable, or (ii) if Mr. Pincus is terminated for any other
reason, the then-outstanding loan together with interest at prime plus one
percent shall be payable monthly with a final payment due on April 30, 1999.
Mr. Pincus has agreed not to compete with the Company for a period of one year
after he ceases to be employed by the Company.
 
The Company has entered into employment agreements with each of Stephen
Kleshinski, Vice President of Research and Development and Jason Harry, Ph.D.,
Vice President of Research Engineering. The employment agreements provide for
terms of five years commencing on June 1, 1993 and for three years commencing
July 1, 1994, respectively. Mr. Kleshinski has agreed for a period of 18 months
following termination of his employment, and Dr. Harry has agreed for a period
of 12 months following termination of his employment, not to compete with the
Company and they each have agreed to assign to the Company any inventions he
may have. The Company is obligated, however, to pay certain royalties to
Messrs. Kleshinski and Harry based on sales or licenses of products where
either Mr. Kleshinski or Dr. Harry, as the case may be, was the sole or joint
inventor. See "Business--Licensed Technology; Royalty Obligations."
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
During the fiscal year ended December 31, 1995, Mr. Gordon served as a member
of the Board of Directors of the Company and participated in the deliberations
of the Board of Directors regarding executive compensation during such period,
including deliberations regarding the determination of his own compensation.
With the exception of Mr. Gordon who is a member of the Compensation Committee
of Biofield Corp., no executive officer of the Company serves or served on the
Compensation Committee of another entity and no executive officer of the
Company serves or served as a director of another entity who has or had an
executive officer serving on the Board of Directors of the Company.
 
STOCK OPTION PLANS
 
The 1994 Plan
 
The Nitinol Medical Technologies, Inc. 1994 Stock Option Plan (the "1994 Plan")
provides for the granting of stock options to acquire a maximum of 315,789
shares of Common Stock. As of August 31, 1996, no shares had been issued upon
the exercise of options granted under the 1994 Plan, 308,380 shares were
subject to outstanding options and 7,409 shares remained available for future
grant. The 1994 Plan is administered by the Board of Directors; and, unless
previously terminated, shall terminate on May 31, 2004.
 
Under the 1994 Plan, options may be granted to employees, directors and
consultants, at the discretion of the Board of Directors. Incentive stock
options ("ISOs") may only be granted to individuals who, at the time of the
grant, are employees or directors of the Company. Non-qualified stock options
("NSOs") may be granted to employees, directors or consultants. The exercise
price of ISOs and NSOs shall be established by the Board of Directors, provided
that the exercise price must be at least equal to the fair market value per
share at the date of the grant. However, if ISOs are granted to persons owning,
directly or indirectly, at the time of the option grant, over 10% of the total
combined voting power of all classes of stock of the Company, the 1994 Plan
provides that the exercise price for such ISOs shall not be less than 110% of
fair market value per share at the date of the grant. Each ISO or NSO must
expire within ten years of the date of grant or at such earlier time as the
Board of Directors shall determine. Options are nontransferable, except by will
or the laws of descent and distribution. The amount and exercise price of
options granted under the 1994 Plan may be adjusted, at the discretion of the
Board of Directors, in the event of any change in the Company's capitalization
or in the event of any merger, consolidation or corporate reorganization where
the Company is the surviving corporation.
 
Any unexercised options held by a grantee whose relationship with the Company
ceases for any reason (other than retirement, death or disability) shall
immediately terminate. Upon cessation of a grantee's relationship with the
Company resulting from retirement, disability or death, the period during which
the grantee may exercise options
 
                                       45
<PAGE>
 
shall not exceed (i) one year from the date of termination in the case of
death, and (ii) three months from the date of termination in the case of
retirement or disability. However, in no event shall the exercise period extend
beyond the option term. Unexercised options shall terminate upon the
dissolution or liquidation of the Company or in the event of a merger,
consolidation or any corporate reorganization where the Company is not the
surviving corporation.
 
1996 Plan
 
The Nitinol Medical Technologies, Inc. 1996 Stock Option Plan (the "1996 Plan")
was approved by the Company's stockholders in July 1996.
 
The purpose of the 1996 Plan is to attract and retain key personnel. The 1996
Plan provides for the grant of options to acquire a maximum of 600,000 shares
of the Common Stock. As of August 31, 1996, 10,526 shares are subject to
outstanding options. The 1996 Plan permits the granting of ISOs or NSOs at the
discretion of the administrator of the 1996 Plan (the "Plan Administrator").
The Board of Directors has appointed a Stock Option Committee of the Board as
the Plan Administrator. Subject to the terms of the 1996 Plan, the Plan
Administrator determines the terms and conditions of options granted under the
1996 Plan. Options granted under the 1996 Plan are evidenced by written
agreements which contain such terms, conditions, limitations and restrictions
as the Plan Administrator deems advisable and which are not inconsistent with
the 1996 Plan. ISOs may be granted to individuals who, at the time of grant,
are employees of the Company or its affiliates. NSOs may be granted to
directors, employees, consultants and other agents of the Company or its
affiliates. The 1996 Plan provides that the Plan Administrator must establish
an exercise price for ISOs that is not less than the fair market value per
share of the Common Stock at the date of grant and an exercise price for NSOs
of not less than 85% of such fair market value. Each ISO must expire with ten
years of the date of grant. However, if ISOs are granted to a person owning
more than 10% of the voting stock of the Company, the 1996 Plan provides that
the exercise price may not be less than 110% of the fair market value per share
at the date of grant and that the term of such ISOs may not exceed five years.
The Plan Administrator has the authority to establish vesting periods for
options granted under the 1996 Plan, or to grant options which are fully vested
at the time of grant.
 
An optionee whose relationship with the Company or any related corporation
ceases for any reason (other than termination for cause, death or total
disability, as such terms are defined in the 1996 Plan) may exercise options in
the three-month period following such cessation (unless such options terminate
or expire sooner by their terms), or in such longer period determined by the
Plan Administrator in the case of NSOs. Unexercised options granted under the
1996 Plan terminate upon a merger (other than a stock merger), reorganization
or liquidation of the Company; however, immediately prior to such a
transaction, optionees may exercise such options without regard to whether the
vesting requirements have been satisfied.
 
Options granted under the 1996 Plan convert into options to purchase shares of
another corporation involved in a stock merger with the Company, unless the
Company and such other corporation, in their sole discretion, determine that
such options terminate. Such converted options become fully vested without
regard to whether the vesting requirements in the option agreement for such
options have been satisfied, unless the Board of Directors determines
otherwise.
 
The option exercise price may be paid in full at the time the notice of
exercise of the option is delivered to the Company and must be paid in cash, by
bank certified or cashier's check or by personal check. Options are
nontransferable with certain exceptions. The Board has certain rights to
suspend, amend or terminate the 1996 Plan provided stockholder approval is
obtained.
 
The 1996 Directors' Stock Plan
 
The Nitinol Medical Technologies, Inc. 1996 Stock Option Plan for Non-Employee
Directors (the "1996 Directors' Stock Plan") was approved by the Company's
stockholders in July 1996. The 1996 Directors' Stock Plan is administered by
the Company's Board of Directors. Subject to the provisions of the 1996
Directors' Stock Plan, the Board has the authority to interpret the plan and
apply its provisions and to adopt, amend or rescind rules, procedures and forms
relating to it. The 1996 Directors' Stock Plan provides for the automatic grant
of nonstatutory stock options to purchase shares of Common Stock to directors
of the Company who are not employees of the Company and do not otherwise
receive compensation from the Company.
 
                                       46
<PAGE>
 
Under the 1996 Directors' Stock Plan, 150,000 shares of Common Stock have been
reserved for issuance of options. If any options granted under the 1996
Directors' Stock Plan shall for any reason expire or be cancelled or otherwise
terminated without having been exercised in full, the shares allocable to the
unexercised portion of such options shall again become available. The 1996
Directors' Stock Plan provides for the automatic grant of options to eligible
directors. Each eligible director who was serving on the Board on the effective
date of the 1996 Directors' Stock Plan automatically will receive an option to
purchase 10,000 shares of Common Stock at the current market price on the date
of grant, subject to vesting in equal monthly installments over a period of
three years. In the future, each nonemployee director who joins the Board will
automatically receive an initial grant of options to purchase 10,000 shares of
Common Stock at an exercise price equal to the fair market value per share at
the date of grant, subject to vesting in equal monthly installments over a
three year period. In each year other than the year in which a director
receives an initial grant of options, such director will automatically receive
options to purchase 2,500 shares of Common Stock which shall become fully-
vested six months after the date of grant.
 
The term of each option granted under the 1996 Directors' Stock Plan is 10
years. Options granted under the 1996 Directors' Stock Plan must be exercised
prior to the earlier of the scheduled expiration date or the date one year
following the date of termination of service.
 
The exercise price of each option under the 1996 Directors' Stock Plan must be
equal to the fair market value of the Common Stock subject to the option on the
date of the grant. The exercise price of each option is payable upon exercise
in cash. The 1996 Directors' Stock Plan also permits an optionee to pay the
exercise price of an option by delivery of an irrevocable direction to pledge
the optionee's shares to a securities broker or lender approved by the Company
as security for a loan and to deliver all or part of the loan proceeds to the
Company in payment of all or part of the exercise price and any withholding
taxes. Unless sooner terminated by the Board, the 1996 Directors' Stock Plan
will terminate in June 2006, and no further options may be granted pursuant to
the plan following the termination date.
 
OPTIONS GRANTED OUTSIDE OF THE PLANS
 
In addition to the ISOs and NSOs which may be granted under the 1994 Plan, as
of August 31, 1996 the Company has granted options to purchase an aggregate of
1,400,613 shares outside of the 1994 Plan, to certain of its employees,
consultants, executive officers and directors, of which 574,149 are vested and
the remainder of which vest upon the passage of time or the achievement of
certain milestones by the Company. Additionally, the Company has granted
certain "piggy-back" registration rights with respect to the shares underlying
such options. See "Description of Capital Stock--Registration Rights."
 
401 (k) PROFIT SHARING PLAN & TRUST
 
In October 1995, the Company adopted a 401 (k) Profit Sharing Plan & Trust (the
"401 (k) Plan"), a tax-qualified plan covering all of its employees who are at
least 21 years of age and have completed three months of service with the
Company. Each employee may elect to reduce his or her current compensation by
up to 15%, subject to the statutory limit (a maximum of $9,500 in 1996) and
have the amount of the reduction contributed to the 401 (k) Plan. The 401 (k)
Plan provides that the Company may, as determined from time to time by the
Board of Directors, provide a matching contribution. In addition, the Company
may contribute an additional amount to the 401 (k) Plan, as determined by the
Board of Directors, which will be allocated based on the proportion of the
employee's compensation for the plan year to the aggregate compensation for the
plan year for all eligible employees. The Company has made no contributions to
date.
 
All employee contributions to the 401 (k) Plan are fully vested at all times.
Upon termination of employment, a participant may elect a lump sum distribution
or, if his or her total amount in the 401 (k) Plan is greater than $3,500, may
elect to receive benefits as retirement income.
 
                                       47
<PAGE>
 
                              CERTAIN TRANSACTIONS
 
In February 1996, the Company entered into an Agreement and Plan of Merger
pursuant to which InnerVentions, Inc., a wholly-owned subsidiary of Fletcher
Spaght, Inc. and the exclusive licensee of the technology relating to the
CardioSeal Septal Occluder, was merged with and into NMT Heart, Inc., a wholly-
owned subsidiary of the Company. Pursuant to the Agreement and Plan of Merger,
the Company acquired all the existing development, manufacturing and testing
equipment, patent licenses, know-how and documentation relating to the
manufacture of the CardioSeal Septal Occluder, which had been originally
developed by Bard, donated to Children's Hospital of Boston, then licensed to
InnerVentions. In connection with the merger, Fletcher Spaght, Inc. received
514,651 shares of Common Stock of NMT and warrants to purchase 111,818 shares
of Common Stock at an exercise price of $2.15 per share, which shares and
warrants are accompanied by certain "piggy-back" registration rights. See
"Description of Capital Stock--Registration Rights." NMT has also agreed to use
its best efforts to nominate a designee of Fletcher Spaght, Inc. as a director
of NMT. Certain of the Company's existing stockholders have agreed to vote
their shares of Common Stock in favor of such a designee.
 
In February 1996, the Company sold an aggregate of 3,787,104 shares of
Convertible Preferred Stock for an aggregate purchase price of $8,500,000
pursuant to the Convertible Stock Offering. Upon the completion of the
Offering, the outstanding shares of Convertible Preferred Stock will
automatically be converted into units, consisting of an aggregate of 1,993,212
shares of Common Stock and 37,871 shares of the Company's Redeemable Preferred
Stock. The Redeemable Preferred Stock will be redeemed by the Company upon
completion of the Offering at a redemption price of $4,250,000 plus accrued
dividends of approximately $150,000 thereon. See "Use of Proceeds." In
connection with the Convertible Stock Offering, the Company entered into a
Registration Rights Agreement with the purchasers of the Convertible Preferred
Stock, granting to such purchasers certain demand and "piggy-back"
registrations rights. See "Description of Capital Stock--Registration Rights."
Whitney Equity Partners, L.P. and Boston Scientific purchased 1,829,066 and
117,247 shares (on a common equivalent basis), respectively, in the Convertible
Stock Offering. Michael C. Brooks and Jeffrey R. Jay, M.D., each a Director of
the Company, are each a General Partner of J.H. Whitney & Co., an affiliate of
Whitney Equity Partners L.P.
 
In connection with the foregoing transactions, in February 1996, the Company
also entered into a Termination Agreement with its existing stockholders
terminating a Stockholders Agreement dated as of April 30, 1987, as amended.
Pursuant to the Termination Agreement, the Company granted certain "piggy-back"
registration rights to existing stockholders. See "Description of Capital
Stock--Registration Rights."
 
In October 1995, C. Leonard Gordon, the Chairman of the Board of the Company,
received a non-qualified option to purchase 184,210 shares of the Company's
Common Stock at an exercise price of $2.15 per share. Of these options, (i)
105,263 vested immediately, (ii) 39,473 options will vest over three years
commencing with the closing of the acquisition in February 1996 of
InnerVentions; and (iii) 39,473 options will vest over three years commencing
with the closing of the Convertible Stock Offering which occurred in February
1996. In May 1994, in connection with Mr. Gordon's efforts in negotiating the
exclusive license agreement with Boston Scientific relating to the Company's
stent technology, Mr. Gordon received (i) a non-qualified stock option to
purchase 52,631 shares of the Company's Common Stock at an exercise price of
$1.14 to vest one year from the date of issuance, and (ii) $100,000 paid from
5% of payments received by the Company under the exclusive license agreement
with Boston Scientific. Mr. Gordon has entered into an oral arrangement with
the Company whereby Mr. Gordon will provide certain executive services as are
required by the Company and will be compensated for such services rendered in
an amount not to exceed $135,000 per year. The services Mr. Gordon performs for
the Company include serving as Chairman of the Board and consulting upon
various aspects of the Company's business including certain contractual
arrangements. The Company believes the terms of the arrangement are no less
favorable to the Company than terms that it could have obtained from an
unaffiliated third party. See Note 13 of Notes to the Consolidated Financial
Statements.
 
In April 1987 the Company entered into a Technology Purchase Agreement with
Morris Simon, M.D. pursuant to which the Company has agreed to pay to Dr. Simon
certain royalty payments based on sales of products using the technology
invented by Dr. Simon relating to the SNF. Dr. Simon assigned a percentage of
his royalty payments to Beth Israel Hospital Association. See "Business--
Licensed Technology; Royalty Obligations." Dr. Simon has entered into an oral
arrangement with the Company whereby Dr. Simon will provide consulting services
as are required by the
 
                                       48
<PAGE>
 
Company and will be compensated for such services rendered in an amount not to
exceed $100,000 per year. Pursuant to this arrangement, Dr. Simon serves as
Scientific Director and provides related consulting services to the Company.
The Company believes the terms of the arrangement are no less favorable to the
Company than terms that it could have obtained from an unaffiliated third
party. See Note 13 of Notes to the Consolidated Financial Statements.
 
Pursuant to the Company's employment agreements with Messrs. Kleshinski and
Harry, respectively, the Company has agreed to pay certain royalties to Messrs.
Kleshinski and Harry based on sales or licenses of products where either Mr.
Kleshinski or Dr. Harry, as the case may be, was the sole or joint inventor.
See "Business--Licensed Technology; Royalty Obligations" and Note 8(d) of Notes
to the Consolidated Financial Statements.
 
                                       49
<PAGE>
 
                             PRINCIPAL STOCKHOLDERS
 
The following table sets forth certain information regarding the beneficial
ownership of the Common Stock as of August 31, 1996 and as adjusted to reflect
the sale by the Company of the Common Stock offered hereby, by (i) each
executive officer and Director, (ii) all Directors and executive officers as a
group and (iii) each person or group known to the Company to be the beneficial
owner of more than 5% of the Common Stock.
                                                      -------------------------
<TABLE>
<CAPTION>
                                              PERCENTAGE OF SHARES
                                            BENEFICIALLY OWNED(1)(2)
                                     SHARES
                               BENEFICIALLY       BEFORE            AFTER
NAME AND ADDRESS OF                OWNED(1)     OFFERING         OFFERING
BENEFICIAL OWNER (3)           ------------ ------------     ------------
<S>                            <C>          <C>              <C>
Whitney Equity Partners, L.P.   1,829,066             29.10%         19.70%
 c/o J.H. Whitney & Co.
 177 Broad Street
 Stamford, CT 06901
C. Leonard Gordon (4)             691,986             10.63%          7.28%
 c/o Immunotherapy Inc.
 360 Lexington Avenue
 New York, NY 10017
Fletcher Spaght, Inc. (5)         626,470              9.80%          6.67%
 222 Berkeley Street
 Boston, MA 02116-3761
Jack Reinstein (6)                625,937              9.88%          6.71%
 7779 Willow Glen Road
 Los Angeles, CA 90046
Morris Simon, M.D. (7)             92,103              1.44%             *
Michael C. Brooks (8)                  -                 -              -
 c/o J.H. Whitney & Co.
 177 Broad Street
 Stamford, CT 06901
Robert G. Brown (9)                98,069              1.55%          1.05%
 217 Echo Drive
 Jupiter, FL 33458
R. John Fletcher (5)                   -                 -              -
 c/o Fletcher Spaght, Inc.
 222 Berkeley Street
 Boston, MA 02116-3761
Jeffrey R. Jay, M.D. (10)              -                 -              -
 c/o J.H. Whitney & Co.
 177 Broad Street
 Stamford, CT 06901
David A. Chazanovitz (11)          20,467                 *              *
Theodore I. Pincus (12)            22,659                 *              *
Thomas M. Tully (13)              119,637              1.87%          1.27%
All directors and executive     1,671,391             24.22%         16.88%
 officers of the Company as
 a group (9 persons) (14)
</TABLE>
- -------
*  Less than one percent.
 
                                       50
<PAGE>
 
(1) Except as indicated in the footnotes to this table, based on information
provided by such persons, the persons named in the table above have sole voting
and investment power with respect to all shares of Common Stock shown as
beneficially owned by them.
(2) Percentage of ownership before the Offering is based on 6,285,922 shares of
Common Stock outstanding as of August 31, 1996 which includes the shares of
Common Stock to be issued in the Conversion. For each person or group shares of
Common Stock subject to stock options that are exercisable within 60 days of
August 31, 1996 are deemed outstanding for computing the percentage of such
person or group.
(3) Except as otherwise indicated, the address of each beneficial owner is c/o
Nitinol Medical Technologies, Inc., 263 Summer Street, Boston, MA 02210.
(4) Mr. Gordon's shares are all owned jointly with his wife. Includes 131,579
options to purchase Common Stock at $2.15 per share; 65,788 options to purchase
Common Stock at $1.14 per share, and 26,315 options to purchase Common Stock at
$.76 per share. Mr. Gordon disclaims beneficial ownership in an aggregate of
237,870 shares owned by, or in trust for, his children and grandchildren.
(5) An aggregate of 514,651 shares and 111,818 warrants to purchase Common
Stock at $2.15 per share are held by Fletcher Spaght, Inc., of which Mr.
Fletcher is the founder, Chief Executive Officer and a principal stockholder.
Includes 28,489 warrants to purchase Common Stock at $2.15 per share which may
be transferred to Mr. Chazanovitz under certain conditions pursuant to an
agreement between Mr. Chazanovitz and Fletcher Spaght, Inc. Mr. Fletcher is a
director of NMT.
(6) Includes 8,772 options to purchase Common Stock at $2.15 per share; 13,157
options to purchase Common Stock at $1.14 per share, and 26,315 options to
purchase Common Stock at $.76 per share and 104,008 shares owned by Synergistic
Associates, Inc. Money Purchase Pension Plan of which Mr. Reinstein is sole
trustee. Mr. Reinstein disclaims beneficial ownership of 190,316 shares owned
by his children.
(7) Includes 13,158 options to purchase Common Stock at $2.15 per share; 52,630
options to purchase Common Stock at $1.14 per share, and 26,315 options to
purchase Common Stock at $.76 per share. Dr. Simon disclaims beneficial
ownership of 655,327 shares owned by his wife and children.
(8) Mr. Brooks is a managing member of J.H. Whitney Equity Partners, L.L.C.,
the general partner of Whitney Equity Partners, L.P. Mr. Brooks disclaims
beneficial ownership of the shares held by Whitney Equity Partners, L.P.,
except to the extent of his proportionate interest.
(9) Includes 14,912 options to purchase Common Stock at $2.15 per share and
13,157 options at $1.14 per share.
(10) Dr. Jay is a managing member of J.H. Whitney Equity Partners, L.L.C., the
general partner of Whitney Equity Partners, L.P. Dr. Jay disclaims beneficial
ownership of the shares held by Whitney Equity Partners, L.P., except to the
extent of his proportionate interest.
(11) Represents 16,520 options to purchase Common Stock at $2.15 per share.
Does not include 28,489 warrants to purchase Common Stock at $2.15 per share
which may be transferred to Mr. Chazanovitz under certain conditions pursuant
to an agreement between Mr. Chazanovitz and Fletcher Spaght, Inc.
(12) Represents 22,659 options to purchase Common Stock at $2.15 per share.
(13) Represents 103,466 options to purchase Common Stock at $2.15 per share and
16,171 options to purchase Common Stock at $6.95 per share.
(14) Includes 16,171 options to purchase Common Stock at $6.95 per share;
414,112 options to purchase Common Stock at $2.15 per share; 131,575 options to
purchase Common Stock at $1.14 per share and 52,630 options to purchase Common
Stock at $.76 per share.
 
                                       51
<PAGE>
 
                          DESCRIPTION OF CAPITAL STOCK
 
The authorized capital stock of the Company consists of 30,000,000 shares of
Common Stock, $.001 par value, 3,800,000 shares of Convertible Preferred Stock,
$.001 par value, 38,000 Redeemable Preferred Stock, $.001 par value and
3,000,000 shares of Preferred Stock, $.001 par value.
 
COMMON STOCK
 
As of August 31, 1996, there were 6,285,922 shares of Common Stock outstanding
and held of record by approximately 74 stockholders. There will be 9,285,922
shares of Common Stock outstanding after giving effect to the sale of the
shares of Common Stock offered hereby.
 
Holders of Common Stock are entitled to one vote for each share held of record
on all matters submitted to a vote of the stockholders, and stockholders have
no right to cumulate their votes in the election of directors. Subject to
preferences that may be applicable to any outstanding shares of preferred
stock, holders of Common Stock are entitled to receive ratably such dividends
as may be declared by the Board of Directors out of funds legally available
therefor. In the event of a liquidation, dissolution or winding up of the
Company, holders of Common Stock are entitled to share ratably in all assets
remaining after payment of liabilities and liquidation preferences of any
outstanding shares of preferred stock. Holders of Common Stock have no
preemptive rights and no right to convert their Common Stock into any other
securities. There are no redemption or sinking fund provisions applicable to
the Common Stock. All outstanding shares of Common Stock are, and all shares of
Common Stock to be outstanding upon completion of the Offering will be, fully
paid and nonassessable.
 
PREFERRED STOCK
 
Upon the closing of the Offering, all outstanding shares of Convertible
Preferred Stock of the Company will convert automatically into shares of Common
Stock and Redeemable Preferred Stock, which shall be redeemed with a portion of
the net proceeds of the Offering. See "Use of Proceeds." Accordingly, no shares
of preferred stock will be outstanding immediately after the closing of the
Offering. The Board of Directors has the authority, without further action by
the stockholders, to issue shares 3,000,000 of preferred stock in one or more
series and to fix the designations, powers (including voting powers, if any)
preferences and relative participating, optional, conversion and other special
rights, and the qualifications, limitations and restrictions to each series.
This provision may be deemed to have a potential anti-takeover effect and the
issuance of preferred stock in accordance with such provision may delay or
prevent a change of control of the Company. In addition, although it presently
has no intention to do so, the Board of Directors, without stockholder
approval, could issue preferred stock with voting and conversion rights which
could adversely affect the voting power of the holders of Common Stock.
 
REGISTRATION RIGHTS
 
In connection with the Convertible Stock Offering, the purchasers of the
Convertible Preferred Stock were granted certain registration rights which
pertain to the shares of Common Stock to be issued upon the Conversion. At any
time after six months following the closing of the Offering, the Company is
obligated to effect three demand registrations (subject to certain limitations)
at the Company's expense upon the request of holders owning 25% or more of the
aggregate number of shares of Common Stock into which shares of Convertible
Preferred Stock have been converted. In addition, the Convertible Preferred
Stock purchasers were granted "piggy-back" registration rights immediately
(subject to certain limitations) at the Company's expense, as part of a
registration of the Company's securities for its own account or the account of
others. In addition, Junewicz & Co., Inc. and Furman Selz LLC, in connection
with the Convertible Stock offering, were issued warrants as ("Private
Placement Agent Warrants") to purchase 99,660 and 64,779 shares of Common
Stock, respectively. The Private Placement Agent Warrants grant the holders
thereof "piggy-back" registration rights as part of a registration of the
Company's securities for its own account or the account of others which are
exercisable at any time after the closing of the Offering. The holders of the
Private Placement Agent Warrants have agreed not to dispose of such warrants
for a period of 180 days after the date of this Prospectus.
 
                                       52
<PAGE>
 
Furthermore, whenever the Company proposes to register any of its securities
under the Securities Act, either for its own account or the account of others,
the Company is required each such time to notify Thomas M. Tully, the Company's
President and Chief Executive Officer, Fletcher Spaght, Inc. and Lloyd A.
Marks, M.D. and to include, at their request, therein their shares and shares
transferred by them to and for the benefit of their family members or
affiliates. The Company is required to bear the expenses of such "piggy-back"
registration rights. Such rights are subject to the right of the underwriter(s)
of the Offering to limit the number of shares being registered and other terms
and conditions. The Company has also granted similar "piggy-back" registration
rights to certain of its existing stockholders in consideration for their
agreement to terminate their Shareholders Agreement with the Company.
 
The existence of the registration rights described above may involve added
costs and complexity in the event the Company desires to register shares of
Common Stock in the future and could have an adverse effect on the market price
of Common Stock.
 
No shares of Common Stock are being registered on behalf of the Company's
securityholders in connection with the Offering.
 
LIMITATIONS ON LIABILITY OF OFFICERS AND DIRECTORS
 
The Company's Amended and Restated Certificate of Incorporation, as amended,
and Amended and Restated Bylaws provide broadly for indemnification of the
officers and directors of the Company. In addition, the Amended and Restated
Certificate of Incorporation, as amended, provides that, to the fullest extent
permitted by Delaware law, no director shall be personally liable to the
Company or its stockholders for monetary damages for any breach of fiduciary
duty by such director in his capacity as a director.
 
DELAWARE ANTI-TAKEOVER STATUTE
 
The Company is subject to the provisions of Section 203 of the Delaware General
Corporation Law. In general, the statute prohibits a publicly-held Delaware
corporation from engaging in a "business combination" with an "interested
stockholder" for a period of three years after the date that the person became
an interested stockholder unless (with certain exceptions) the business
combination or the transaction in which the person became an interested
stockholder is approved in a prescribed manner. Generally, a "business
combination" includes a merger, asset or stock sale, or other transaction
resulting in a financial benefit to the stockholder. Generally, an "interested
stockholder" is a person who, together with affiliates and associates, owns or
(within three years prior, did own) 15% or more of the corporation's voting
stock.
 
TRANSFER AGENT AND REGISTRAR
 
American Stock Transfer and Trust Company will act as transfer agent and
registrar for the Common Stock.
 
                                       53
<PAGE>
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
Upon completion of the Offering, the Company will have a total of 9,285,922
shares of Common Stock outstanding (9,735,922 shares if the Underwriters' over-
allotment option is exercised in full). Of these shares, the 3,000,000 shares
of Common Stock offered hereby (3,450,000 shares if the Underwriters' over-
allotment option is exercised in full) will be freely tradable without
restriction or registration under the Securities Act, by persons other than
affiliates of the Company. The remaining 6,285,922 shares of Common Stock
outstanding are "restricted shares" as that term is defined by Rule 144
promulgated under the Securities Act. Under Rule 144 (and subject to the
conditions thereof) approximately 3,605,691 shares of the restricted shares
will become eligible for sale upon completion of the Offering. The Company's
officers and directors and certain other stockholders of the Company (who in
the aggregate will hold 6,248,499 shares of the restricted securities upon
completion of the Offering) have agreed not to directly or indirectly, offer,
sell, offer to sell, grant any option to purchase or otherwise sell or dispose
of any shares of Common Stock or other capital stock of the Company, or any
securities convertible into, exercisable, or exchangeable for, any shares of
Common Stock or other capital stock of the Company without the prior written
consent of J.P. Morgan Securities Inc. on behalf of the Underwriters, for a
period of 180 days from the date of this Prospectus, subject to certain limited
exceptions. See "Underwriting."
 
As of August 31, 1996, options to purchase a total of 1,719,507 shares of
Common Stock were outstanding with a weighted average exercise price of $2.57
per share, of which options to purchase 734,399 shares of Common Stock were
exercisable. In addition, as of such date, an additional 7,409 shares of Common
Stock were available for future option grants under the 1994 Plan. In June
1996, the Company adopted, subject to stockholder approval, the 1996 Plan and
the 1996 Directors' Stock Plan, which include 600,000 and 150,000 shares
available for future option grants, respectively. As of August 31, 1996, 10,526
options have been granted under the 1996 Plan. Upon adoption of the 1996
Directors' Stock Plan, options to purchase 10,000 shares of Common Stock at the
initial public offering price per share will be granted to four nonemployee
directors, subject to stockholder approval of the plan. As of August 31, 1996,
Common Stock purchase warrants to purchase a total of 281,520 shares of Common
Stock were outstanding with a weighted average price of $3.34 per share. The
Company's officers, directors and certain other stockholders of the Company
holding an aggregate of 1,350,587 shares issuable upon the exercise of options
and warrants have entered into lock-up agreements. Rule 701 under the
Securities Act provides that, beginning 90 days after the date of this
Prospectus, shares of Common Stock acquired on the exercise of outstanding
options may be resold subject to certain provisions of Rule 144. The Company
intends to file registration statements under the Securities Act to register
shares of Common Stock included in its option plans, shares of Common Stock
subject to outstanding stock options granted outside of such plans and shares
of Common Stock issuable upon the exercise of certain warrants. See
"Description of Capital Stock--Registration Rights."
 
                                       54
<PAGE>
 
                                  UNDERWRITING
 
The Underwriters named below (the "Underwriters"), for whom J.P. Morgan
Securities Inc., CS First Boston Corporation and Jefferies & Company, Inc. are
acting as representatives (the "Representatives"), have severally agreed,
subject to the terms and conditions set forth in the underwriting agreement
among the Company and the Representatives (the "Underwriting Agreement"), to
purchase from the Company, and the Company has agreed to sell to the
Underwriters, the respective number of shares of Common Stock set forth
opposite their names below:
 
                                                                     ----------
<TABLE>
<CAPTION>
                                                                NUMBER OF SHARES
UNDERWRITERS                                                    ----------------
<S>                                                             <C>
J.P. Morgan Securities Inc. ...................................      760,000
CS First Boston Corporation....................................      760,000
Jefferies & Company, Inc. .....................................      760,000
Bear, Stearns & Co. Inc. ......................................       90,000
Sanford C. Bernstein & Co., Inc. ..............................       90,000
Alex. Brown & Sons Incorporated................................       90,000
Cowen & Company................................................       90,000
Furman Selz LLC................................................       90,000
Montgomery Securities..........................................       90,000
Dain Bosworth Incorporated.....................................       45,000
Piper Jaffray Inc. ............................................       45,000
Raymond James & Associates, Inc. ..............................       45,000
Wessels, Arnold & Henderson, L.L.C. ...........................       45,000
                                                                   ---------
  Total........................................................    3,000,000
                                                                   =========
</TABLE>
 
The nature of the Underwriters' obligations under the Underwriting Agreement is
such that all of the Common Stock being offered, excluding shares covered by
the over-allotment option granted to the Underwriters, must be purchased if any
are purchased.
 
The Representatives have advised the Company that the several Underwriters
propose to offer the Common Stock to the public initially at the public
offering price set forth on the cover page of this Prospectus and may offer the
Common Stock to selected dealers at such price less a concession not to exceed
$0.46 per share. The Underwriters may allow, and such dealers may reallow, a
concession to other dealers not in excess of $0.10 per share. After the public
offering of the Common Stock, the public offering price and other selling terms
may be changed by the Representatives.
 
The Company has granted the Underwriters an option, exercisable within 30 days
after the date of this Prospectus, to purchase up to an additional 450,000
shares of Common Stock from the Company at the same price per share to be paid
by the Underwriters for the other shares offered hereby. If the Underwriters
purchase such additional shares pursuant to the option, each of the
Underwriters will be committed to purchase such additional shares in
approximately the same proportion as set forth in the above table. The
Underwriters may exercise the option only to cover over-allotments, if any,
made in connection with the distribution of Common Stock offered hereby.
 
Prior to the Offering, there has been no public market for the Common Stock.
The initial public offering price has been determined by negotiations between
the Company and the Representatives. Among the factors considered in
determining the initial offering price include the prevailing market
conditions, the market valuations of certain publicly traded companies, revenue
and earnings of the Company and comparable companies in recent periods,
estimates of the business potential and prospects of the Company, the
experience of the Company's management and the position of the Company in its
industry.
 
The Representatives have advised the Company that they do not expect sales to
accounts over which they exercise discretionary authority will exceed 5% of the
shares of Common Stock offered hereby.
 
The Company and its directors and executive officers and certain stockholders
have agreed not to offer, sell or otherwise dispose of, any Common Stock or any
securities convertible into Common Stock or register for sale under
 
                                       55
<PAGE>
 
the Securities Act any Common Stock, for a period of 180 days after the date of
this Prospectus without the prior written consent of J.P. Morgan Securities
Inc., subject to certain limited exceptions. See "Shares Eligible for Future
Sale."
 
The Company has agreed to indemnify the Underwriters against certain
liabilities, including liabilities under the Securities Act, or to contribute
to payments the Underwriters may be required to make in respect thereof.
 
                                 LEGAL MATTERS
 
The validity of the shares of Common Stock offered hereby will be passed upon
for the Company by Squadron, Ellenoff, Plesent & Sheinfeld, LLP, New York, New
York. The Underwriters have been represented by Cravath, Swaine & Moore, New
York, New York.
 
                                    EXPERTS
 
The Consolidated Financial Statements of the Company included in this
Prospectus and elsewhere in the Registration Statement have been audited by
Arthur Andersen LLP, independent public accountants, as stated in their report
with respect thereto, and are included herein in reliance upon the authority of
said firm as experts in giving said reports.
 
The statements in the Prospectus under the captions "Risk Factors--Dependence
on Patents and Proprietary Technology," "Business--Patents and Proprietary
Technology," "Business--Licensed Technology; Royalty Obligations" and other
references herein to intellectual property have been reviewed and approved by
Sixbey, Friedman, Leedom & Ferguson, patent counsel for the Company, as experts
on such matters and are included herein in reliance upon that review and
approval.
 
                             ADDITIONAL INFORMATION
 
The Company has filed with the Securities and Exchange Commission (the
"Commission"), a Registration Statement on Form S-1 (together with all
amendments, exhibits, schedules and supplements thereto, the "Registration
Statement") under the Securities Act with respect to the shares of Common Stock
being offered hereby. This Prospectus, which forms a part of the Registration
Statement, does not contain all of the information set forth in the
Registration Statement. For further information with respect to the Company and
the shares of Common Stock offered hereby, reference is made to the
Registration Statement. Statements contained in this Prospectus as to the
contents of any contract or other document are not necessarily complete and,
where such contract or other document is an exhibit to the Registration
Statement, each such statement is qualified in all respects by the provisions
in such exhibit, to which reference is hereby made. Copies of the Registration
Statement may be examined without charge at the Public Reference Section of the
Commission, 450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549 and the
Commission's Regional Offices located at Seven World Trade Center, New York,
New York 10048 and Citicorp Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661. Copies of all or any portion of the Registration
Statement can be obtained from the Public Reference Section of the Commission,
450 Fifth Street, N.W., Washington, D.C., 20549, upon payment of certain fees
prescribed by the Commission. The Commission maintains a World Wide Web site on
the Internet at http://www.sec.gov that contains reports, proxy and information
statements and other information regarding registrants that file electronically
with the Commission.
 
                                       56
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<S>                                                                       <C>
Report of Independent Public Accountants                                    F-2
Consolidated Balance Sheets as of December 31, 1994 and 1995, June 30,
 1996 (Unaudited) and Pro forma June 30, 1996 (Unaudited)                   F-3
Consolidated Statements of Operations for the Years Ended December 31,
 1993, 1994 and 1995 and for the Six Months Ended June 30, 1995 and 1996
 (Unaudited)                                                                F-4
Consolidated Statements of Stockholders' Equity (Deficit) for the Years
 Ended December 31, 1993, 1994 and 1995, and for the Six Months Ended
 June 30, 1996 (Unaudited)                                                  F-5
Consolidated Statements of Cash Flows for the Years Ended December 31,
 1993, 1994 and 1995 and for the Six Months Ended June 30, 1995 and 1996
 (Unaudited)                                                                F-6
Notes to Consolidated Financial Statements                                  F-7
</TABLE>
 
                                      F-1
<PAGE>
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To Nitinol Medical Technologies, Inc.:
 
We have audited the accompanying consolidated balance sheets of Nitinol Medical
Technologies, Inc. (a Delaware corporation) and subsidiary as of December 31,
1994 and 1995, and the related consolidated statements of operations,
stockholders' equity (deficit) and cash flows for each of the three years in
the period ended December 31, 1995. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.
 
We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
 
In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of Nitinol Medical Technologies,
Inc. and subsidiary as of December 31, 1994 and 1995, and the results of their
operations and their cash flows for each of the three years in the period ended
December 31, 1995, in conformity with generally accepted accounting principles.
 
                                                       /s/ Arthur Andersen LLP
Boston, Massachusetts
March 21, 1996 (except with
respect to the matters dis-
cussed in Note 9, as to
which the date is July 9,
1996)
 
                                      F-2
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
                          CONSOLIDATED BALANCE SHEETS
 
                                          -------------------------------------
<TABLE>
<CAPTION>
                                                                       PRO FORMA
                                  AT DECEMBER 31,       AT JUNE 30,     JUNE 30,
                                      1994        1995         1996         1996
                               -----------  ----------  -----------  -----------
                                                        (UNAUDITED)  (UNAUDITED)
<S>                            <C>          <C>         <C>          <C>
   ASSETS
Current assets:
  Cash and cash equivalents    $   715,400  $  533,247  $ 5,717,968  $ 5,717,968
  Accounts receivable               84,796     323,217      605,505      605,505
  Inventories                      151,114     208,061      349,150      349,150
  Prepaid expenses                  10,814      20,326       97,839       97,839
  Deferred tax asset                   --      143,000      143,000      143,000
                               -----------  ----------  -----------  -----------
    Total current assets           962,124   1,227,851    6,913,462    6,913,462
                               -----------  ----------  -----------  -----------
Property and equipment, at
 cost:
  Laboratory and computer
   equipment                       337,135     393,171      845,976      845,976
  Leasehold improvements            12,987     124,461      279,030      279,030
  Office furniture and
   equipment                        42,419      76,030       81,438       81,438
                               -----------  ----------  -----------  -----------
                                   392,541     593,662    1,206,444    1,206,444
  Less--Accumulated
   depreciation and
   amortization                    128,388     208,777      354,005      354,005
                               -----------  ----------  -----------  -----------
                                   264,153     384,885      852,439      852,439
                               -----------  ----------  -----------  -----------
Other assets                        27,008      48,014      221,965      221,965
                               -----------  ----------  -----------  -----------
                               $ 1,253,285  $1,660,750  $ 7,987,866  $ 7,987,866
                               ===========  ==========  ===========  ===========
   LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)
Current liabilities:
  Accounts payable             $   119,470  $  498,816  $   554,995  $   554,995
  Accrued expenses                 295,506     215,983      131,447      131,447
  Distribution payable to
   stockholders                        --      100,000          --           --
  Current portion of capital
   lease obligation                    --          --         6,707        6,707
  Current portion of
   subordinated debt                 2,500     309,356          --           --
  Current portion of loan from
   distributor                     477,120     780,830      398,830      398,830
  Current portion of deferred
   revenue                             --      600,000      512,876      512,876
                               -----------  ----------  -----------  -----------
    Total current liabilities      894,596   2,504,985    1,604,855    1,604,855
                               -----------  ----------  -----------  -----------
Preferred stock redemption
 liability                             --          --           --     4,325,556
                               -----------  ----------  -----------  -----------
Capital lease obligation, net
 of current portion                    --          --        28,899       28,899
                               -----------  ----------  -----------  -----------
Loan from distributor, net of
 current portion                   780,830         --           --           --
                               -----------  ----------  -----------  -----------
Deferred revenue, net of
 current portion                   600,000         --           --           --
                               -----------  ----------  -----------  -----------
Subordinated debt, net of
 current portion                   309,356         --           --           --
                               -----------  ----------  -----------  -----------
Commitments and contingencies
 (Note 8)
Redemption value of preferred
 stock                                 --          --     4,325,556          --
                               -----------  ----------  -----------  -----------
Stockholders' equity
 (deficit):
  Preferred stock, $.001 par
   value--
   Authorized--3,000,000
   shares
   Issued and outstanding--
   none                                --          --           --           --
  Convertible preferred stock,
   $.001 par value--
   Authorized--3,800,000
   shares
   Issued and outstanding--
   3,787,104 shares at June
   30, 1996, actual, no shares
   pro forma (preference in
   liquidation of $8,500,000
   at June 30, 1996)                   --          --         3,787          --
  Common stock, $.001 par
   value--
   Authorized--30,000,000
   shares
   Issued and outstanding--
   3,758,322, 3,774,112,
   4,292,710 and 6,285,922
   shares at December 31, 1994
   and 1995, June 30, 1996 and
   June 30, 1996 pro forma,
   respectively                      3,759       3,775        4,294        6,287
  Paid-in capital                  263,247         --     4,305,768    4,307,562
  Accumulated deficit           (1,598,503)   (848,010)  (2,285,293)  (2,285,293)
                               -----------  ----------  -----------  -----------
    Total stockholders' equity
     (deficit)                  (1,331,497)   (844,235)   2,028,556    2,028,556
                               -----------  ----------  -----------  -----------
                               $ 1,253,285  $1,660,750  $ 7,987,866  $ 7,987,866
                               ===========  ==========  ===========  ===========
</TABLE>
 
The accompanying Notes are an integral part of these Consolidated Financial
Statements.
 
                                      F-3
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
 
                                  ---------------------------------------------
<TABLE>
<CAPTION>
                                                               FOR THE SIX MONTHS
                         FOR THE YEARS ENDED DECEMBER 31,        ENDED JUNE 30,
                            1993        1994        1995        1995        1996
                         ----------  ----------  ----------  ----------  -----------
                                                                  (UNAUDITED)
<S>                      <C>         <C>         <C>         <C>         <C>
Revenues:
  Product sales          $2,003,313  $1,836,931  $2,716,022  $1,302,600  $ 1,998,777
  License fees                  --      772,500     625,000         --       625,000
  Product development           --       38,051     491,857     268,915       79,027
                         ----------  ----------  ----------  ----------  -----------
                          2,003,313   2,647,482   3,832,879   1,571,515    2,702,804
                         ----------  ----------  ----------  ----------  -----------
Expenses:
  Cost of product sales     654,944     812,204   1,263,951     545,987      924,013
  Research and develop-
   ment                     272,248     554,530     870,588     365,910    1,163,037
  General and adminis-
   trative                  467,981     770,175     871,469     278,711      939,971
  Selling and marketing     285,272     182,377     169,308      65,189      103,278
  In-process research
   and development              --          --          --          --     1,111,134
                         ----------  ----------  ----------  ----------  -----------
                          1,680,445   2,319,286   3,175,316   1,255,797    4,241,433
                         ----------  ----------  ----------  ----------  -----------
    Income (loss) from
     operations             322,868     328,196     657,563     315,718   (1,538,629)
                         ----------  ----------  ----------  ----------  -----------
Interest expense            (74,339)    (52,838)    (37,629)    (16,552)     (25,720)
Interest income              12,144      14,003       8,328       5,616      127,066
                         ----------  ----------  ----------  ----------  -----------
                            (62,195)    (38,835)    (29,301)    (10,936)     101,346
                         ----------  ----------  ----------  ----------  -----------
    Income (loss) before
     provision for
     income taxes           260,673     289,361     628,262     304,782   (1,437,283)
Provision for income
 taxes                          --          --       44,000         --           --
                         ----------  ----------  ----------  ----------  -----------
    Net income (loss)    $  260,673  $  289,361  $  584,262  $  304,782  $(1,437,283)
                         ==========  ==========  ==========  ==========  ===========
Net income (loss) per
 common and common
 equivalent share        $      .04  $      .04  $      .09  $      .05  $      (.22)
                         ==========  ==========  ==========  ==========  ===========
Weighted average common
 and common equivalent
 shares outstanding       6,415,355   6,592,841   6,722,215   6,721,752    6,592,334
                         ==========  ==========  ==========  ==========  ===========
</TABLE>
 
 
The accompanying Notes are an integral part of these Consolidated Financial
Statements.
 
                                      F-4
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
           CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT)
 
                       --------------------------------------------------------
<TABLE>
<CAPTION>
                              CONVERTIBLE                                                          TOTAL
                            PREFERRED STOCK      COMMON STOCK                              STOCKHOLDERS'
                             NUMBER     $.001    NUMBER     $.001    PAID-IN  ACCUMULATED         EQUITY
                          OF SHARES PAR VALUE OF SHARES PAR VALUE    CAPITAL      DEFICIT      (DEFICIT)
                          --------- --------- --------- --------- ----------  -----------  -------------
<S>                       <C>       <C>       <C>       <C>       <C>         <C>          <C>
Balance, January 1, 1993        --   $  --    3,562,006  $3,562   $  188,434  $(1,648,537)  $(1,456,541)
  Exercise of common
   stock options                --      --       43,685      44        5,966          --          6,010
  Net income                    --      --          --      --           --       260,673       260,673
                          ---------  ------   ---------  ------   ----------  -----------   -----------
Balance, December 31,
 1993                           --      --    3,605,691   3,606      194,400   (1,387,864)   (1,189,858)
  Exercise of common
   stock options                --      --      152,631     153       68,847          --         69,000
  Distributions to
   stockholders ($.13
   per share)                   --      --          --      --           --      (500,000)     (500,000)
  Net income                    --      --          --      --           --       289,361       289,361
                          ---------  ------   ---------  ------   ----------  -----------   -----------
Balance, December 31,
 1994                           --      --    3,758,322   3,759      263,247   (1,598,503)   (1,331,497)
  Exercise of common
   stock options                --      --       15,790      16        2,984          --          3,000
  Distributions to
   stockholders ($.03
   per share)                   --      --          --      --           --      (100,000)     (100,000)
  Reclassification of S
   Corporation losses to
   the extent of addi-
   tional paid-in capi-
   tal                          --      --          --      --      (266,231)     266,231           --
  Net income                    --      --          --      --           --       584,262       584,262
                          ---------  ------   ---------  ------   ----------  -----------   -----------
Balance, December 31,
 1995                           --      --    3,774,112   3,775          --      (848,010)     (844,235)
  Issuance of
   convertible preferred
   stock, net of
   issuance costs of
   approximately
   $989,000 (Unaudited)   3,787,104   3,787         --      --     3,257,211          --      3,260,998
  Common stock issued in
   connection with the
   purchase of
   technology and other
   assets (Unaudited)           --      --      514,651     515    1,104,442          --      1,104,957
  Exercise of common
   stock options
   (Unaudited)                  --      --        3,947       4        8,471          --          8,475
  Warrant grant in
   exchange for license
   (Unaudited)                  --      --          --      --        11,200          --         11,200
  Accretion of
   convertible preferred
   stock dividends
   (Unaudited)                  --      --          --      --       (75,556)         --        (75,556)
  Net loss (Unaudited)          --      --          --      --           --    (1,437,283)   (1,437,283)
                          ---------  ------   ---------  ------   ----------  -----------   -----------
Balance, June 30, 1996
 (Unaudited)              3,787,104  $3,787   4,292,710  $4,294   $4,305,768  $(2,285,293)  $ 2,028,556
                          =========  ======   =========  ======   ==========  ===========   ===========
</TABLE>
 
 
The accompanying Notes are an integral part of these Consolidated Financial
Statements.
 
                                      F-5
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                                            -----------------------------------
<TABLE>
<CAPTION>
                                                                   FOR THE SIX MONTHS
                             FOR THE YEARS ENDED DECEMBER 31,        ENDED JUNE 30,
                                   1993         1994        1995       1995         1996
                             ----------  -----------  ----------  ---------  -----------
                                                                       (UNAUDITED)
<S>                          <C>         <C>          <C>         <C>        <C>
Cash flows from operating
 activities:
 Net income (loss)           $  260,673  $   289,361  $  584,262  $ 304,782  $(1,437,283)
 Adjustments to reconcile
  net income (loss) to net
  cash provided by (used
  in) operating
  activities--
   Depreciation and
    amortization                 45,413       55,825      88,895     39,443      143,812
   Deferred tax asset               --           --     (143,000)       --           --
   Common stock issued for
    in-process research and
    development                     --           --          --         --       806,174
   Warrant grant in
    exchange for license            --           --          --         --        11,200
   Changes in assets and
    liabilities--
     Accounts receivable        328,804       (8,308)   (238,421)  (166,547)    (282,288)
     Inventories                154,519       12,386     (56,947)    15,168     (141,089)
     Prepaid expenses            (4,019)       2,086      (9,512)   (10,280)     (77,513)
     Accounts payable           (69,997)      24,171     379,347     23,151       56,179
     Accrued expenses           (67,895)     190,121     (79,523)  (173,661)     (84,536)
     Deferred revenue               --       600,000         --         --       (87,124)
                             ----------  -----------  ----------  ---------  -----------
      Net cash provided by
       (used in) operating
       activities               647,498    1,165,642     525,101     32,056   (1,092,468)
                             ----------  -----------  ----------  ---------  -----------
Cash flows from investing
 activities:
 Purchases of property and
  equipment                     (30,564)    (104,049)   (201,121)  (176,156)    (275,394)
 (Increase) decrease in
  other assets                      --        12,100     (29,513)    (6,937)    (175,534)
                             ----------  -----------  ----------  ---------  -----------
      Net cash used in
       investing activities     (30,564)     (91,949)   (230,634)  (183,093)    (450,928)
                             ----------  -----------  ----------  ---------  -----------
Cash flows from financing
 activities:
 Payments of subordinated
  debt                         (183,858)    (329,161)     (2,500)    (2,500)    (309,356)
 Payments of loan from
  distributor                       --      (242,050)   (477,120)  (284,820)    (382,000)
 Proceeds from issuance of
  convertible preferred
  stock, net                        --           --          --         --     7,510,998
 Proceeds from issuance of
  common stock                    6,010       69,000       3,000        --         8,475
 Distributions to
  stockholders                      --      (500,000)        --         --      (100,000)
                             ----------  -----------  ----------  ---------  -----------
      Net cash provided by
       (used in) financing
       activities              (177,848)  (1,002,211)   (476,620)  (287,320)   6,728,117
                             ----------  -----------  ----------  ---------  -----------
Net increase (decrease) in
 cash and cash equivalents      439,086       71,482    (182,153)  (438,357)   5,184,721
Cash and cash equivalents,
 beginning of period            204,832      643,918     715,400    715,400      533,247
                             ----------  -----------  ----------  ---------  -----------
Cash and cash equivalents,
 end of period               $  643,918  $   715,400  $  533,247  $ 277,043  $ 5,717,968
                             ==========  ===========  ==========  =========  ===========
Supplemental disclosure of
 cash flow information:
 Cash paid during the
  period for--
   Interest                  $   78,885  $    52,838  $   39,814  $  19,099  $    11,840
                             ==========  ===========  ==========  =========  ===========
   Taxes                     $    3,157  $     1,862  $    2,135  $     --   $       --
                             ==========  ===========  ==========  =========  ===========
Supplemental disclosure of
 non-cash investing and
 financing transactions:
 Equipment acquired under
  capital lease obligation   $      --   $       --   $      --   $     --   $    35,606
                             ==========  ===========  ==========  =========  ===========
 Accretion of dividends on
  convertible preferred
  stock                      $      --   $       --   $      --   $     --   $    75,556
                             ==========  ===========  ==========  =========  ===========
 Common stock issued for
  in-process research and
  development                $      --   $       --   $      --   $     --   $   806,174
                             ==========  ===========  ==========  =========  ===========
 Common stock issued for
  property and equipment     $      --   $       --   $      --   $     --   $   298,783
                             ==========  ===========  ==========  =========  ===========
</TABLE>
 
 
The accompanying Notes are an integral part of these Consolidated Financial
Statements.
 
                                      F-6
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
 (1) OPERATIONS
 
   Nitinol Medical Technologies, Inc. (NMT or the Company) designs, develops
   and markets innovative medical devices that utilize advanced materials and
   are delivered by minimally invasive procedures. The Company's products are
   designed to offer alternative approaches to existing complex treatments,
   thereby reducing patient trauma, shortening procedure, hospitalization and
   recovery times, and lowering overall treatment costs. The Company's
   patented medical devices include self-expanding stents, vena cava filters
   and septal repair devices. At this time, the Company's stents are in
   European clinical trials for certain indications, its vena cava filters
   are marketed in the United States and abroad, and the Company is
   completing the development of its septal repair device. The Company is
   subject to a number of risks similar to those of other companies in this
   stage of development, including uncertainties regarding the development of
   commercially viable products, competition from alternative procedures and
   larger companies, dependence on key personnel, government regulation and
   the ability to obtain adequate financing to fund product development. See
   "Risk Factors" on pages 6-12 of this Prospectus.
 
 (2) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
   (a) Principles of Consolidation
 
   The accompanying Consolidated Financial Statements include the accounts of
   the Company and its wholly owned subsidiary. All intercompany transactions
   and balances have been eliminated in consolidation.
 
   (b) Management Estimates
 
   The preparation of accrual based financial statements in conformity with
   generally accepted accounting principles requires management to make
   estimates and assumptions that affect the reported amounts of assets and
   liabilities and disclosure of contingent assets and liabilities at the
   date of the financial statements, and the reported amounts of revenues and
   expenses during the reporting periods. Actual results could differ from
   those estimates.
 
   (c) Interim Financial Statements
 
   The accompanying Consolidated Financial Statements as of June 30, 1996 and
   for the six months ended June 30, 1995 and 1996 are unaudited. In
   management's opinion, these unaudited Consolidated Financial Statements
   have been prepared on the same basis as the audited Consolidated Financial
   Statements and include all adjustments, consisting of only normal
   recurring adjustments, necessary for a fair presentation of the results
   for such periods. The unaudited results for the six months ended June 30,
   1996 are not necessarily indicative of the results expected for the fiscal
   year ending December 31, 1996.
 
   (d) Cash and Cash Equivalents
 
   The Company considers all investments with maturities of 90 days or less
   from the date of purchase to be cash equivalents. At June 30, 1996, cash
   equivalents consist of money market accounts, commercial paper and short-
   term mutual funds that invest in U.S. government obligations. In
   accordance with Statement of Financial Accounting Standards (SFAS) No.
   115, Accounting for Certain Investments in Debt and Equity Securities, the
   Company considers its cash equivalents, which are carried at market and
   approximate cost, as available-for-sale.
 
   (e) Inventories
 
   Inventories are stated at the lower of cost (first-in, first-out) or
   market and consist of the following:
 
                                         -----------------------
<TABLE>
<CAPTION>
                      AT DECEMBER 31,  JUNE 30,
                         1994     1995     1996
                     -------- -------- --------
     <S>             <C>      <C>      <C>
     Components      $ 96,817 $178,366 $291,772
     Finished goods    54,297   29,695   57,378
                     -------- -------- --------
                     $151,114 $208,061 $349,150
                     ======== ======== ========
</TABLE>
 
   Finished goods consist of materials, labor and manufacturing overhead.
 
                                      F-7
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
   (f) Financial Instruments
 
   The estimated fair value of the Company's financial instruments, which
   include cash and cash equivalents, accounts receivable and debt,
   approximates their reported amounts.
 
   (g) Concentration of Credit Risk
 
   SFAS No. 105, Disclosure of Information About Financial Instruments with
   Off-Balance-Sheet Risk and Financial Instruments with Concentration of
   Credit Risk, requires disclosure of any significant off-balance-sheet and
   credit risk concentrations. Financial instruments that subject the Company
   to credit risk consist primarily of trade accounts receivable. The Company
   utilizes primarily one distributor for the sales of its filter products.
   This distributor had amounts due to the Company of approximately $162,000,
   $267,000 and $584,000 as of December 31, 1994 and 1995 and June 30, 1996,
   respectively. This distributor accounted for 83%, 93%, 95%, 94% and 96% of
   product revenues for fiscal 1993, 1994 and 1995 and for the six months
   ended June 30, 1995 and 1996, respectively.
 
   (h) Depreciation and Amortization
 
   The Company provides for depreciation and amortization by charges to
   operations using the straight-line method, which allocates the cost of
   property and equipment over the following estimated useful lives:
 
                                                           ---------
<TABLE>
<CAPTION>
                                               ESTIMATED
                                             USEFUL LIFE
        ASSET CLASSIFICATION               -------------
        <S>                                <C>
        Laboratory and computer equipment      5-7 Years
        Leasehold improvements             Life of Lease
        Office furniture and equipment        3-10 Years
</TABLE>
 
   (i) Revenue Recognition
 
   The Company records product sales upon shipment as products sold to the
   Company's primary distributor are not subject to a right of return for
   unsold product. License fees and product development revenue are
   recognized as earned.
 
   The Company expects to recognize $500,000 of license fees, which are
   currently recorded as deferred revenue, when the 24-month refund period
   expires in November 1996 (see Note 6).
 
   (j) Net Income (Loss) per Common and Common Equivalent Share
 
   Net income (loss) per common and common equivalent share is based on the
   weighted-average number of shares of common stock and common stock
   equivalents outstanding during the respective periods. All shares of
   capital stock, options and warrants issued during the 12 months
   immediately preceding the anticipated initial public offering were treated
   as if they had been outstanding for all periods, in accordance with the
   Securities and Exchange Commission rules and regulations, calculated under
   the treasury-stock method and based on the estimated initial public
   offering share price appearing on the cover of this Prospectus. Pro forma
   net income (loss) per common and common equivalent share has not been
   presented as the results are not materially different from historical net
   income (loss) per common and common equivalent share.
 
 
                                      F-8
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
   (k) Postretirement Benefits
 
   The Company has no material obligations for postretirement benefits.
 
   (l) Unaudited Pro Forma Presentation
 
   The unaudited pro forma consolidated balance sheet as of June 30, 1996 re-
   flects the following events, which will occur upon the closing of the
   Company's proposed initial public offering: (i) the automatic conversion
   of all outstanding convertible preferred stock into 1,993,212 shares of
   common stock and 37,871 shares of redeemable preferred stock and (ii) the
   reclassification of the redemption value of preferred stock to redeemable
   preferred stock liquidation liability as the redeemable preferred stock
   will be redeemed utilizing proceeds of the Company's proposed initial pub-
   lic offering.
 
 (3) PURCHASE OF TECHNOLOGY AND OTHER ASSETS
 
   In February 1996, the Company issued 514,651 shares of its common stock
   and warrants to purchase 111,818 shares of common stock at $2.15 per share
   for the purchase of certain technology and related fixed assets. The
   Company has valued the common stock issued in this transaction at $2.15
   per share, which represents the fair value as determined by its Board of
   Directors and supported by an appraisal. The Company is required to pay
   certain future royalties as defined in the agreement. The acquired
   technology relates to a septal repair device for which the Company expects
   to conduct human clinical trials. At the time of the acquisition, it was
   determined that the commercial feasibility of the purchased technology was
   uncertain, and accordingly, the Company charged the amount of the purchase
   price allocated to the technology to operations as in-process research and
   development. The amount allocated to laboratory and computer equipment
   represents the estimated fair value at the date of acquisition of the
   acquired laboratory and computer equipment which have alternative future
   uses. The aggregate purchase price and acquisition costs incurred of
   $1,409,917 were allocated as follows:
 
                                                             -------
<TABLE>
        <S>                                  <C>
        Laboratory and computer equipment    $  298,783
        In-process research and development   1,111,134
                                             ----------
                                             $1,409,917
                                             ==========
</TABLE>
 
 (4) INCOME TAXES
 
   The Company uses the liability method to account for income taxes in
   accordance with SFAS No. 109, Accounting for Income Taxes.
 
   Prior to October 19, 1995, the Company elected to be taxed as an S
   corporation for federal and state income tax purposes. Accordingly, the
   accompanying Consolidated Financial Statements do not include a provision
   for income taxes for 1993, 1994 and the first 10 1/2 months of 1995. The
   provision for income taxes in the accompanying consolidated statement of
   operations for the period from October 19, 1995 to December 31, 1995
   consists of the following:
 
                                                               -----
<TABLE>
        <S>              <C>
        Federal          $   --
        State (current)   44,000
                         -------
                         $44,000
                         =======
</TABLE>
 
   The accompanying consolidated statements of operations do not contain a
   pro forma income tax adjustment for periods prior to the termination of
   the S corporation election. If the election to be treated as an
   S corporation was not made, the Company would have been subject to federal
   and state corporate income taxes. However, the Company would have had
   sufficient net operating loss carryforwards to offset income in all
   periods presented.
 
                                      F-9
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
   The approximate income tax effect of each temporary difference
   constituting the deferred tax asset in the accompanying consolidated
   balance sheets is as follows:
 
<TABLE>
<CAPTION>
                                               ---------------------
                                               DECEMBER 31, JUNE 30,
                                                       1995     1996
                                               ------------ --------
        <S>                                    <C>          <C>
        Deferred tax assets:
          Deferred revenue                       $200,000   $200,000
          Reserves and nondeductible accruals      17,000     17,000
                                                 --------   --------
                                                  217,000    217,000
                                                 --------   --------
        Deferred tax liabilities:
          Depreciation                            (74,000)   (74,000)
                                                 --------   --------
        Net deferred tax asset                   $143,000   $143,000
                                                 ========   ========
</TABLE>
 
 (5) LOAN FROM DISTRIBUTOR
 
   The Company has an exclusive distribution agreement with an unrelated
   third party to provide for the sale and distribution of the Simon Nitinol
   Filter (SNF). In connection with this agreement, the Company received a
   loan of $1,500,000 from the distributor in 1992. The agreement calls for
   the repayment of this loan by the Company through certain minimum
   purchases of the SNF by the distributor, as defined in the agreement. In
   the event that the loan is not fully repaid upon expiration or termination
   of the agreement, the amount outstanding becomes due and payable in
   monthly installments. Based on projected sales levels for 1996, the
   Company expects that the amount outstanding under the loan agreement at
   December 31, 1995 and June 30, 1996 will be repaid in full in 1996.
   Accordingly, the total outstanding amount has been classified as current
   in the accompanying consolidated balance sheets as of December 31, 1995
   and June 30, 1996.
 
 (6) DEFERRED REVENUE
 
   On November 22, 1994, the Company licensed exclusive, worldwide rights,
   including the right to sublicense to others, to develop, produce and
   market its stent technology to an unrelated third party (the Licensee). In
   connection with the signing of the license agreement, the Company received
   $500,000 in consideration for the license granted and an additional
   $500,000 upon issuance of the United States patent for a specific stent.
   The Company may be required to refund varying amounts of such payments
   based on the occurrence of certain events, as defined in the license
   agreement. To date, no such event has occurred. The Company deferred
   recognition as revenue of amounts that may be subject to refund until the
   expiration of the refund period. The final refund period expires in
   November 1996. The Company also received $272,500 from the Licensee in
   1994 which is nonrefundable and is to be credited against future license
   fees payable to the Company, as defined. This amount is included in
   license fees in the accompanying consolidated statements of operations in
   1994. During 1995 and the six months ended June 30, 1996, the Company
   received additional nonrefundable license fees upon the achievement of
   certain milestones, as defined in the license agreement.
 
   In 1994, the Company also received a $100,000 advance from the Licensee
   under a product development program for the reimbursement of costs the
   Company incurred related to the activities of product development,
   registration and transfer of technology to the Licensee. For the years
   ended December 31, 1994 and 1995 and for the six months ended June 30,
   1995 and 1996, the Company received $38,051, $491,857, $268,915 and
   $79,027, respectively, of reimbursements for development program costs.
   These reimbursed amounts are included in revenues in the accompanying
   consolidated statements of operations.
 
 
                                      F-10
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
 (7) DEBT
 
   Subordinated debt consists of the following:
 
                                                                ---------------
<TABLE>
<CAPTION>
                                                                DECEMBER 31,
                                                                  1994     1995
                                                              -------- --------
    <S>                                                       <C>      <C>
    Subordinated unsecured debt to various stockholders,
     principal due in annual installments of $95,000 through
     July 1997, bearing interest at 10%                       $190,000 $190,000
    Subordinated unsecured debt to various stockholders,
     principal due in annual installments of $25,000 through
     July 1997, bearing interest at 10%                         50,000   50,000
    Subordinated unsecured debt to various stockholders,
     principal due in annual installments of $18,750 through
     July 1998, bearing interest at 10%                         56,250   56,250
    Deferred interest due to various stockholders and a
     related party and associated pension plan, principal
     due in annual installments of $6,553 through July 1997,
     bearing interest at 10%                                    13,106   13,106
    Other                                                        2,500      --
                                                              -------- --------
                                                               311,856  309,356
    Less--Current portion                                        2,500  309,356
                                                              -------- --------
                                                              $309,356 $    --
                                                              ======== ========
</TABLE>
 
   The Company repaid all outstanding subordinated debt in April 1996.
 
 (8) COMMITMENTS AND CONTINGENCIES
 
   (a) Manufacturing Agreement
 
   The Company contracts with an unrelated third party for the manufacture of
   certain products. Under the amended agreement, the Company is required to
   purchase minimum unit quantities through June 2001. The aggregate minimum
   purchases under the agreement are approximately $2,600,000. In addition,
   in the event of an order cancellation or product conversion, the Company
   has agreed to purchase all in-process materials and all special materials
   purchased by the manufacturer for use in the production of these products,
   limited to purchase orders through 180 days after cancellation.
 
   (b) Operating Leases
 
   The Company has entered into operating leases for office and laboratory
   space. These leases expire through 2005. The leases for office space
   require payment for all related operating expenses of the building,
   including real estate taxes and utilities.
 
 
                                      F-11
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
   Future minimum rental payments due under operating lease agreements as of
   March 31, 1996 are approximately as follows:
 
                                                             --------
<TABLE>
<CAPTION>
                         AMOUNT
        YEAR ENDED   ----------
        <S>          <C>
         1996        $  318,000
         1997           468,000
         1998           468,000
         1999           468,000
         2000           468,000
         Thereafter   2,981,000
                     ----------
                     $5,171,000
                     ==========
</TABLE>
 
   Rent expense for the years ended December 31, 1993, 1994 and 1995 and for
   the six months ended June 30, 1995 and 1996 amounted to approximately
   $87,000, $84,000, $103,000, $32,000 and $70,000, respectively. In
   connection with its facility lease, the Company entered into a
   construction agreement whereby the Company is required to provide
   approximately $900,000, beginning in June 1996, related to improvements of
   the facility.
 
   (c) Profit Sharing
 
   Prior to 1995, the Company had entered into a distribution agreement with
   a distributor which provided for an annual profit sharing payment (not to
   exceed a specified aggregate amount) based on income before provision for
   income taxes, as defined in the agreement. In 1995, the Company terminated
   this agreement through a payment of $100,000 to the distributor. This
   payment was charged to operations and is included in the accompanying
   consolidated statements of operations.
 
   (d) Royalties
 
   The Company has entered into various agreements that require payment of
   royalties to be paid based on specified percentages of future sales, as
   defined (see Notes 3 and 12). In addition, the Company has agreed to pay
   royalties to certain employees based on sales or licenses of products
   where they were the sole or joint inventor. Future minimum commitments
   under these agreements are approximately $15,000 per year. Royalty expense
   under royalty agreements was $56,000, $66,000, $64,000, $38,000 and
   $57,000 for the years December 31, 1993, 1994, 1995 and for the six months
   ended June 30, 1995 and 1996, respectively.
 
 (9) COMMON STOCK
 
   (a) Authorized Common Stock
 
   On July 9, 1996, the Company increased the number of authorized shares of
   common stock from 10,000,000 to 30,000,000.
 
   (b) Stock Split
 
   On July 9, 1996, the Company effected a 1-for-1.9 reverse stock split of
   its common stock. Accordingly, all share and per share amounts of common
   stock have been retroactively restated for all periods presented to
   reflect the reverse stock split.
 
                                      F-12
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
(10) PREFERRED STOCK
 
   In February 1996, the Board of Directors authorized 3,800,000 shares of
   convertible preferred stock and 38,000 shares of redeemable preferred
   stock. The Company then sold 3,787,104 shares of preferred stock at $2.24
   per share, resulting in net proceeds to the Company of approximately
   $7,500,000. The Company has recorded the redemption value of the
   convertible preferred stock outside of stockholder's equity (deficit) as
   of June 30, 1996.
 
   On July 9, 1996 the Company authorized 3,000,000 shares of undesignated
   preferred stock.
 
   (a) Convertible Preferred Stock
 
   The convertible preferred stockholders maintain the following rights and
   privileges.
 
     Voting. The convertible preferred stockholders are entitled to vote
     with the common stockholders based on the number of votes that they
     would receive upon conversion.
 
     Conversion. The convertible preferred stockholders may convert their
     preferred stock at any time. Each share of convertible preferred stock
     is convertible into one conversion unit. A conversion unit consists of
     (i) 1/1.9 share of common stock, subject to certain antidilution
     adjustments and (ii) one one-hundredth share of redeemable preferred
     stock. The convertible preferred stock automatically converts into an
     equal number of conversion units upon an initial public offering
     resulting in gross proceeds to the Company of at least $22,000,000 and
     a minimum price of $12.77 per share or a sale of the Company resulting
     in gross proceeds to the stockholders of at least $100,000,000.
 
     Liquidation. In the event of liquidation, dissolution or winding up of
     the Company, the holders of the convertible preferred stock are
     entitled to an amount equal to the greater of (i) the liquidation
     preference, $2.24 per share at March 31, 1996, plus any accrued and
     unpaid dividends or (ii) the amount the holders of convertible
     preferred stock would be entitled to receive if all shares of
     convertible preferred stock had been converted immediately prior to any
     liquidation, dissolution or winding up.
 
     Dividends. The holders of the convertible preferred stock shall be
     entitled to receive dividends if and when declared by the Board of
     Directors. Dividends payable on the convertible preferred stock shall
     begin to accrue in May 1996 at an annual rate equal to 8% based on the
     liquidation preference described above.
 
   (b) Redeemable Preferred Stock
 
   The redeemable preferred stockholders maintain the following rights and
   privileges.
 
     Voting. The holders of redeemable preferred stock shall not have any
     right to vote unless required by law.
 
                                      F-13
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
 
     Redemption. On the closing of a qualified initial public offering or a
     qualified sale transaction, as defined above, each share of redeemable
     preferred stock shall automatically be redeemed at a price equal to
     $4,250,000 divided by the number of shares of redeemable preferred
     stock outstanding, plus (i) all accrued and unpaid dividends and (ii)
     any dividend amounts due to the redeemable preferred stockholders.
 
     Liquidation. In the event of liquidation, dissolution or winding up of
     the Company, the holders of the redeemable preferred stock shall be
     entitled to receive an amount equal to the redemption liquidation
     preference plus any accrued and unpaid dividends.
 
     Dividends. The holders of the redeemable preferred stock shall be
     entitled to receive dividends if and when declared by the Board of
     Directors. Dividends on the redeemable preferred stock shall begin to
     accrue from the issuance date of the redeemable preferred stock at an
     annual rate equal to 16% based on the redemption liquidation
     preference.
 
(11) STOCK OPTIONS AND WARRANTS
 
   (a) Nonqualified Stock Options
 
   The Company granted nonqualified options to various officers/stockholders
   and members of the Board of Directors to purchase shares of common stock
   at a given exercise price per share. The options become exercisable in
   full or in part at issuance or within one to four years of the date of
   issuance. All unexercised grants expire on the earlier of approximately
   five to ten years from date of issuance or 90 days after termination of
   service as an officer, director, employee and/or consultant.
 
   (b) Stock Option Plans
 
   1994 Stock Option Plan. In May 1994, the Board of Directors approved an
   incentive stock option plan (the 1994 Plan), which authorizes the Company
   to issue options to purchase up to 315,789 shares of the Company's common
   stock under the 1994 Plan. The Company may grant options to officers, key
   employees, directors and consultants of the Company at an exercise price
   not less than fair market value as determined by the Board of Directors.
   There were 15,000 shares available for grant under the 1994 Plan as of
   June 30, 1996.
 
                                      F-14
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
   The following table summarizes all stock option activity including grants
   outside of the 1994 Plan:
 
                                                  -------------------
<TABLE>
<CAPTION>
                                       NUMBER    PRICE PER
                                    OF SHARES        SHARE
                                    ---------  -----------
        <S>                         <C>        <C>
        Balance, December 31, 1992    212,105  $  .13-$.57
          Granted                      78,947          .57
          Exercised                   (43,685)         .13
                                    ---------  -----------
        Balance, December 31, 1993    247,367      .19-.76
          Granted                     297,368     .76-1.14
          Exercised                  (152,631)     .19-.57
                                    ---------  -----------
        Balance, December 31, 1994    392,104     .19-1.14
          Granted                     539,459         2.15
          Exercised                   (15,790)         .19
                                    ---------  -----------
        Balance, December 31, 1995    915,773     .76-2.15
          Granted                     789,564    2.15-6.95
          Exercised                    (3,947)        2.15
                                    ---------  -----------
        Balance, June 30, 1996      1,701,390  $ .76-$6.95
                                    =========  ===========
        Exercisable, June 30, 1996    658,734  $ .76-$6.95
                                    =========  ===========
</TABLE>
 
   Subsequent to June 30, 1996, the Company granted options to purchase 7,591
   shares of common stock at $8.93 per share.
 
   1996 Stock Option Plan. The Nitinol Medical Technologies, Inc. 1996 Stock
   Option Plan (the 1996 Plan) was approved by the Company's stockholders in
   July 1996.
 
   The 1996 Plan provides for the grant of options to acquire a maximum of
   600,000 shares of the common stock. As of July 31, 1996, 10,526 shares are
   subject to outstanding options at an exercise price of $8.93 per share.
   The 1996 Plan permits the granting of incentive stock options or
   nonstatutory stock options at the discretion of the administrator of the
   1996 Plan (the Plan Administrator). The Board of Directors has appointed a
   Stock Option Committee of the Board as the Plan Administrator. Subject to
   the terms of the 1996 Plan, the Plan Administrator determines the terms
   and conditions of options granted under the 1996 Plan.
 
   The 1996 Directors Stock Plan. The Nitinol Medical Technologies, Inc. 1996
   stock option plan for non-employee directors (the 1996 Directors' Stock
   Plan) was approved by the Company's stockholders in July 1996. The 1996
   Directors' Stock Plan provides for the automatic grant of nonstatutory
   stock options to purchase shares of common stock to directors of the
   Company who are not employees of the Company and do not otherwise receive
   compensation from the Company.
 
   Under the 1996 Directors' Stock Plan 150,000 shares of common stock have
   been reserved for issuance of options. The 1996 Directors' Stock Plan
   provides for the automatic grant of options to eligible directors. Each
   eligible director serving on the Board on the effective date of the 1996
   Directors' Stock Plan automatically received an option to purchase 10,000
   shares of common stock at a price equal to the initial public offering
   price of this offering, subject to vesting in three equal monthly
   installments over a period of three years. In the future, each nonemployee
   director who joins the Board will automatically receive an initial grant
   of options to purchase 10,000 shares of common stock at an exercise price
   equal to the fair market value per share at the date of grant, subject to
   vesting in equal monthly installments over a three year period. In each
   year other than the year in which a director receives an initial grant of
   options, such director will automatically receive options to purchase
   2,500 shares of common stock which shall become fully-vested six months
   after the date of grant.
 
                                      F-15
<PAGE>
 
               NITINOL MEDICAL TECHNOLOGIES, INC. AND SUBSIDIARY
 
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS--(CONTINUED)
 
                (INCLUDING DATA APPLICABLE TO UNAUDITED PERIODS)
 
 
   (c) Warrants
 
   In connection with the technology purchase discussed in Note 3, the
   Company issued warrants to purchase 111,818 shares of common stock at
   $2.15 per share. The warrants are fully exercisable and expire ten years
   from the date of grant.
 
   In February 1996, the Company issued warrants to purchase 164,439 shares
   of common stock at $4.26 per share to placement agents in connection with
   a private placement of the Company's convertible preferred stock. In April
   1996, the Company issued a warrant to purchase 5,263 shares of common
   stock at $.02 per share in connection with a patent license agreement. The
   warrants are fully exercisable and expire ten years from the date of
   grant.
 
(12) TECHNOLOGY PURCHASE AGREEMENT
 
   Pursuant to a technology purchase agreement (TPA), the Company purchased
   from a stockholder/founder the proprietary rights to the primary patent
   for the SNF and related technology. Under the terms of the TPA, the
   Company made an initial payment of $15,000 and agreed to pay royalties
   based upon various rates of cumulative net sales, as defined, with minimum
   royalties payable of $15,000 per year. Royalties are payable over the life
   of the primary patent and commenced after FDA approval. The Company has
   granted the stockholder/founder a security interest in substantially all
   proprietary rights acquired by the Company. In the event of unsecured
   defaults, as set forth in the TPA, the Company has agreed to immediately
   pay the stockholder/founder damages of $100,000.
 
(13) RELATED PARTY TRANSACTIONS
 
   Three stockholders of the Company and related entities provide management
   consulting services to the Company. Total payments made during the years
   ended December 31, 1993, 1994 and 1995 and for the six months ended June
   30, 1995 and 1996 in connection with such services were approximately
   $180,000, $210,000, $242,000, $106,000 and $140,000, respectively.
 
   At December 31, 1994 and 1995, the Company had subordinated debt and
   deferred interest outstanding to various stockholders, a related party and
   an associated pension plan of $311,856, $309,356. No amounts were
   outstanding at June 30, 1996 (see Note 7).
 
(14) ACCRUED EXPENSES:
 
   Accrued expenses consist of the following:
<TABLE>
<CAPTION>
                                                      AT DECEMBER 31,  JUNE 30,
                                                       1994     1995     1996
                                                     -------- -------- --------
     <S>                                             <C>      <C>      <C>
     Payroll and payroll related.................... $140,000 $ 50,000 $    --
     Royalties......................................   55,257   26,148   33,328
     Other accrued expenses.........................  100,249  139,835   98,119
                                                     -------- -------- --------
       Total accrued expenses....................... $295,506 $215,983 $131,447
                                                     ======== ======== ========
</TABLE>
 
                                      F-16
<PAGE>
 
 
 
 
 
 
 
 
 
 
Nitinol Medical
- --------------------------------------------------------------------------------
Technologies, Inc.


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