ECLIPSE SURGICAL TECHNOLOGIES INC
424B4, 1996-06-04
ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES
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<PAGE>
 
                                4,000,000 SHARES
 
  [LOGO]
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
                                  COMMON STOCK
                                ----------------
 
    All  of the shares of Common Stock  offered hereby are being sold by Eclipse
Surgical Tech-
nologies, Inc. Prior to this offering, there  has been no public market for  the
Common  Stock of the Company. See "Underwriting" for a discussion of the factors
to be considered in  determining the initial public  offering price. The  Common
Stock has been approved for listing on The Nasdaq Stock Market's National Market
under the symbol ESTI.
 
    THESE  SECURITIES INVOLVE A HIGH DEGREE OF  RISK. SEE "RISK FACTORS" AT PAGE
6.
                               -----------------
 
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>
                                                          UNDERWRITING
                                        PRICE TO          DISCOUNTS AND       PROCEEDS TO
                                         PUBLIC          COMMISSIONS(1)       COMPANY(2)
<S>                               <C>                   <C>                <C>
 Per Share......................         $16.00               $1.12             $14.88
 Total..........................      $64,000,000          $4,480,000         $59,520,000
 Total Assuming Full Exercise of
 Over-Allotment Option (3)......      $73,600,000          $5,152,000         $68,448,000
</TABLE>
 
(1) See "Underwriting."
 
(2)  Before deducting expenses estimated at $1,100,000, which are payable by the
    Company.
 
(3) Assuming exercise in full of the 30-day option granted by the Company to the
    Underwriters to purchase up to 600,000 additional shares, on the same terms,
    solely to cover over-allotments. See "Underwriting."
                              -------------------
 
    The shares of Common Stock are offered by the Underwriters, subject to prior
sale, when, as and if delivered to and accepted by the Underwriters, and subject
to their  right to  reject orders  in  whole or  in part.  It is  expected  that
delivery  of the Common Stock will be made in  New York City on or about June 5,
1996.
                              -------------------
 
PAINEWEBBER INCORPORATED
 
                            DEUTSCHE MORGAN GRENFELL
 
                                                       JEFFERIES & COMPANY, INC.
 
                                  ------------
 
                  THE DATE OF THIS PROSPECTUS IS MAY 31, 1996
<PAGE>
    THE COMPANY MUST  OBTAIN PRE-MARKET  APPROVAL FROM  THE U.S.  FOOD AND  DRUG
ADMINISTRATION  BEFORE THE COMPANY WILL BE ABLE TO OFFER ITS PRODUCTS FOR TMR ON
A COMMERCIAL BASIS IN THE U.S. THERE  CAN BE NO ASSURANCE THAT THE COMPANY  WILL
OBTAIN SUCH APPROVAL OR WHEN SUCH APPROVAL MAY BE OBTAINED. SEE "RISK FACTORS --
NO ASSURANCE OF FDA OR OTHER REQUIRED GOVERNMENTAL APPROVALS."
 
<TABLE>
<C>                   <S>
                      TMR is an investigational surgical procedure performed on
   [PHOTOGRAPH OF     the beating heart of patients with debilitating angina in
   OPERATING ROOM     order to improve the blood supply to the myocardium, or
       SCENE]         heart muscle.
</TABLE>
 
<TABLE>
<S>                   <C>
                                [Map of U.S. with TMR sites labelled]
 
                      Eclipse TMR lasers are installed in major hospital centers
                      in the U.S. The Company believes it has installed TMR
                      laser systems in more hospitals in the U.S. than any other
                      TMR provider.
</TABLE>
 
    The Company intends to furnish to its shareholders annual reports containing
audited  financial statements, quarterly  reports containing unaudited financial
statements 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
STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.
                              -------------------
 
          This Prospectus contains certain trademarks of the Company.
 
                                       2
<PAGE>
                               PROSPECTUS SUMMARY
 
    THIS  PROSPECTUS CONTAINS FORWARD-LOOKING STATEMENTS WHICH INVOLVE RISKS AND
UNCERTAINTIES. THE COMPANY'S  ACTUAL RESULTS  AND THE TIMING  OF CERTAIN  EVENTS
COULD   DIFFER  MATERIALLY  FROM  THOSE   ANTICIPATED  IN  SUCH  FORWARD-LOOKING
STATEMENTS AS  A  RESULT  OF  CERTAIN  FACTORS  DISCUSSED  IN  THIS  PROSPECTUS,
INCLUDING  THOSE  SET  FORTH  IN "RISK  FACTORS."  PROSPECTIVE  INVESTORS SHOULD
CONSIDER CAREFULLY  THE  FACTORS  DISCUSSED IN  "RISK  FACTORS."  THE  FOLLOWING
SUMMARY  IS  QUALIFIED  IN  ITS  ENTIRETY  BY  REFERENCE  TO  THE  MORE DETAILED
INFORMATION AND  FINANCIAL STATEMENTS,  INCLUDING THE  NOTES THERETO,  APPEARING
ELSEWHERE  IN THIS  PROSPECTUS. UNLESS  OTHERWISE INDICATED,  ALL SHARE  AND PER
SHARE DATA AND INFORMATION IN THIS  PROSPECTUS RELATING TO THE NUMBER OF  SHARES
OF  COMMON STOCK  OUTSTANDING (I)  GIVE EFFECT TO  A THREE-FOR-ONE  SPLIT OF THE
COMMON STOCK  EFFECTED  IN MAY  1996,  (II) GIVE  EFFECT  TO AMENDMENTS  TO  THE
COMPANY'S  STOCK OPTION PLAN AND  DIRECTOR STOCK OPTION PLAN  AND ADOPTION OF AN
EMPLOYEE STOCK PURCHASE PLAN IN APRIL 1996, AND (III) ASSUME NO EXERCISE OF  THE
UNDERWRITERS'  OVER-ALLOTMENT OPTION TO PURCHASE UP TO 600,000 ADDITIONAL SHARES
OF COMMON STOCK.
 
                                  THE COMPANY
 
    Eclipse Surgical  Technologies,  Inc.  (the  "Company")  designs,  develops,
manufactures  and  distributes  laser-based  surgical  products  and  disposable
fiber-optic accessories  for the  treatment of  advanced cardiovascular  disease
through  transmyocardial revascularization ("TMR"). TMR  is a surgical procedure
performed on  the beating  heart  in which  a laser  device  is used  to  create
pathways  through  the  myocardium, or  heart  muscle, directly  into  the heart
chamber. The  pathways are  intended  to enable  improved  blood supply  to  the
myocardium  from  the heart  chamber. TMR  potentially offers  end-stage cardiac
patients a  means to  alleviate their  symptoms of  angina, or  chest pain,  and
improve their quality of life. The Company currently offers its Eclipse TMR 2000
laser  system for sale in limited numbers for investigational use only, pursuant
to an Investigational Device Exemption ("IDE") granted by the U.S. Food and Drug
Administration ("FDA") in September 1995. From that time through April 30, 1996,
the Company has installed its TMR laser systems in 20 hospitals in the U.S.  and
two hospitals in Europe. The Company believes it has installed TMR laser systems
in more hospitals in the U.S. than any other TMR provider.
 
    According  to  the American  Heart  Association (the  "AHA"), cardiovascular
disease is the leading cause of death and disability in the U.S. Coronary artery
disease, the principal  form of  cardiovascular disease, is  characterized by  a
progressive narrowing of the coronary arteries, which supply oxygenated blood to
the  heart, potentially resulting in angina  and damage to the heart. Typically,
the condition worsens over time and often  leads to heart attack or death.  More
than  six  million  Americans  experience  anginal  symptoms,  and approximately
500,000 deaths in the U.S. annually are attributable to coronary artery disease.
 
    The primary therapeutic options for treatment of coronary artery disease are
drug therapy, percutaneous transluminal coronary angioplasty ("PTCA" or "balloon
angioplasty") including techniques which augment  or replace PTCA such as  stent
placement  and atherectomy, and coronary artery  bypass graft surgery ("CABG" or
"open heart bypass surgery").  The total number  of such cardiovascular  related
surgical  procedures performed  in the U.S.  each year is  estimated at 885,000,
consisting of approximately 485,000 open heart bypass surgeries and 400,000 PTCA
procedures. When these primary therapeutic options are exhausted, the patient is
left with no  viable surgical alternative  other than, in  limited cases,  heart
transplantation. Without a viable surgical alternative, the patient is generally
managed with drug therapy, but often with significant lifestyle limitations. TMR
offers   potential  relief  to   this  large  class   of  patients  with  severe
cardiovascular disease.
 
    The Company's initial clinical study,  which commenced in November 1995,  is
designed  to assess the safety and  effectiveness of the Company's TMR procedure
as compared with drug therapy  in patients with severe  angina. Phase I of  this
clinical  study was completed in January 1996,  and Phase II, the final phase of
the clinical trial, commenced in March 1996. In the second quarter of 1996,  the
Company intends to undertake Phase I of a second FDA approved TMR study designed
to  assess the safety and effectiveness of  TMR used in conjunction with CABG as
compared with CABG alone. Through these and other trials, the Company is seeking
to expand the indications for TMR.
 
                                       3
<PAGE>
    The Company's objective is to become the leading supplier in the TMR  market
by developing multiple surgical platforms and providing a comprehensive suite of
high  quality  TMR products.  The Company  believes  that its  compact, flexible
fiber-optic based system will enable it to offer effective solutions across  the
three  principal surgical approaches  potentially available for  TMR, open chest
surgery, minimally invasive  surgery and  percutaneous surgery.  The Company  is
also  developing a  broad range of  disposable fiber-optic  based surgical tools
designed to operate with the Company's  laser base unit and intended to  provide
physicians   with  a  broad  range  of  options  for  their  individual  tactile
preferences and solutions  for the  different geometry of  each patient's  heart
cavity. The Company holds five U.S. patents and related foreign patents relating
to  surgical treatment with  lasers and fiber-optic  handpieces, and has applied
for or is  in the process  of applying  for additional patents  relating to  its
laser  technology,  TMR  applications  and  fiber-optic  handpieces.  While  the
Company's existing patents are not being utilized with the Company's current TMR
protocol, the  Company believes  such  patents may  be applicable  to  minimally
invasive and percutaneous approaches.
 
    The  Company must obtain pre-market approval ("PMA") from the FDA before the
Company will be able to offer its products for TMR on a commercial basis in  the
U.S.  There can be no  assurance that the Company  will obtain such approval, or
when such approval may be obtained.
 
    The Company  is  a California  corporation  formed in  1989.  The  Company's
principal   executive  offices  are  located  at  1049  Kiel  Court,  Sunnyvale,
California 94089 and its telephone number at that location is (408) 747-0120.
 
                                  RISK FACTORS
 
    The securities offered hereby involve a  high degree of risk. The  Company's
success  will depend  upon successful completion  of clinical  trials, which are
currently at  an  early  stage;  the  receipt  of  FDA  and  other  governmental
approvals,  which may  take considerable  time, and may  not be  granted at all;
acceptance of  TMR,  which  is  a new  surgical  procedure,  among  the  medical
community;  the ability to  protect the Company's  intellectual property rights;
the risk of claims of infringement of third party intellectual property  rights;
the  ability  of  the Company  to  manage  change and  growth  in  its business,
particularly in light  of the Company's  limited history of  TMR operations  and
history  of operating losses; the ability of  the Company to succeed in light of
significant competition; and other risks. See "Risk Factors."
 
                                       4
<PAGE>
                                  THE OFFERING
 
<TABLE>
<S>                                           <C>
Common Stock Offered by the Company.........  4,000,000 shares (1)
Common Stock Outstanding after the            15,682,396 shares (2)
Offering....................................
Use of Proceeds.............................  For   research   and   development   including
                                              clinical   trials;  expansion   of  sales  and
                                              marketing  resources;  capital   expenditures,
                                              including expansion of manufacturing
                                              facilities; repayment of outstanding
                                              indebtedness   and  overdue  obligations;  and
                                              general corporate  purposes including  working
                                              capital. See "Use of Proceeds."
Nasdaq National Market Symbol...............  ESTI
</TABLE>
 
- - ------------------------------
(1)  Assumes no exercise of the  Underwriters' over-allotment option to purchase
    up to 600,000 additional shares of Common Stock.
 
(2) Excludes as of May  15, 1996 (i) 2,662,526  shares of Common Stock  issuable
    upon  exercise of outstanding options under the Company's Stock Option Plan,
    and 1,332,230  additional shares  reserved for  future issuance  under  such
    plan,  (ii)  33,000  shares  of  Common  Stock  issuable  upon  exercise  of
    outstanding options  under  the Company's  Director  Stock Option  Plan  and
    167,000  additional  shares reserved  for future  issuance under  such plan,
    (iii) 250,000 shares of Common Stock reserved for future issuance under  the
    Company's  Employee Stock Purchase Plan and  (iv) 1,171,638 shares of Common
    Stock issuable upon  exercise of  outstanding warrants.  See "Management  --
    Stock  Option Plan,"  "-- Director  Stock Option  Plan," "--  Employee Stock
    Purchase Plan" and "Description of Capital Stock -- Warrants."
 
                         SUMMARY FINANCIAL INFORMATION
                     (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                                              THREE MONTHS ENDED
                                                                   YEAR ENDED DECEMBER 31,                        MARCH 31,
                                                    -----------------------------------------------------  ------------------------
                                                      1991       1992       1993       1994       1995        1995         1996
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
<S>                                                 <C>        <C>        <C>        <C>        <C>        <C>          <C>
STATEMENT OF OPERATIONS DATA:
Net revenues......................................  $   3,289  $   2,645  $   2,105  $   2,020  $   2,707   $     528    $   1,752
Cost of revenues..................................      1,389      1,108      1,013      1,173      1,642         382          502
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
    Gross profit..................................      1,900      1,537      1,092        847      1,065         146        1,250
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
Operating Expenses:
  Research and development........................        813        920        906        971      1,010         195          517
  Sales and marketing.............................        333        620        794        392        879         191          396
  General and administrative......................        367        546        325      1,031        681         199          211
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
Total operating expenses..........................      1,513      2,086      2,025      2,394      2,570         585        1,124
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
    Operating income (loss).......................        387       (549)      (933)    (1,547)    (1,505)       (439)         126
Interest and other income (expense), net..........        (23)       (19)        (3)      (435)      (921)       (221)         (50)
Provision for income taxes........................         35         --         --         --         --          --           --
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
    Net income (loss).............................  $     329  $    (568) $    (936) $  (1,982) $  (2,426)  $    (660)   $      76
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
    Net income (loss) per share...................  $    0.03  $   (0.05) $   (0.08) $   (0.16) $   (0.19)  $   (0.05)   $    0.01
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
    Shares used in per share calculation..........     10,491     10,537     11,676     12,526     12,765      12,765       14,863
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
    Supplemental net income (loss)(3).............     --         --         --         --      $  (2,298)     --        $     108
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
    Supplemental net income (loss) per share(3)...     --         --         --         --      $   (0.18)     --        $    0.01
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
    Shares used in supplemental per share
     calculation(3)...............................     --         --         --         --         12,884      --           14,987
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
                                                    ---------  ---------  ---------  ---------  ---------  -----------  -----------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                               MARCH 31, 1996
                                                                                          -------------------------
                                                                                           ACTUAL    AS ADJUSTED(1)
                                                                                          ---------  --------------
<S>                                                                                       <C>        <C>
BALANCE SHEET DATA:
Cash and cash equivalents...............................................................  $   1,277    $   57,738
Working capital.........................................................................        468        59,008
Total assets............................................................................      4,679        61,020
Long-term obligations, less current portion(2)..........................................         23            23
Accumulated deficit.....................................................................     (5,939)       (5,939)
Total shareholders' equity..............................................................        720        59,140
</TABLE>
 
- - ------------------------------
(1) As adjusted to give effect to the application of the estimated net  proceeds
    of the Offering. See "Use of Proceeds."
 
(2)  Does not include  $1,691 of current portion  of long-term obligations which
    will be  paid in  full out  of the  proceeds of  the Offering.  See "Use  of
    Proceeds."
 
(3)  Supplemental net income, supplemental net  income per share and shares used
    in supplemental per share  calculation for 1995 and  the three months  ended
    March  31, 1996 were calculated assuming  that the indebtedness to be repaid
    with the net proceeds of  the Offering had been  repaid at the beginning  of
    each  such period using  the assumed proceeds  from the sale  of the minimum
    number  of  shares  required  to  retire  such  indebtedness.  See  "Use  of
    Proceeds."
 
                                       5
<PAGE>
                                  RISK FACTORS
 
    THESE  SECURITIES INVOLVE  A HIGH DEGREE  OF RISK.  THIS PROSPECTUS CONTAINS
FORWARD-LOOKING STATEMENTS WHICH INVOLVE RISKS AND UNCERTAINTIES. THE  COMPANY'S
ACTUAL  RESULTS AND  THE TIMING OF  CERTAIN EVENTS COULD  DIFFER MATERIALLY FROM
THOSE ANTICIPATED  BY SUCH  FORWARD-LOOKING STATEMENTS  AS A  RESULT OF  CERTAIN
FACTORS  DISCUSSED  IN THIS  PROSPECTUS, INCLUDING  THE  RISK FACTORS  SET FORTH
BELOW. PROSPECTIVE PURCHASERS OF THE COMMON STOCK SHOULD CONSIDER CAREFULLY  THE
RISK FACTORS SET FORTH BELOW, AS WELL AS THE OTHER INFORMATION SET FORTH IN THIS
PROSPECTUS, PRIOR TO INVESTING IN THE COMMON STOCK OFFERED HEREBY.
 
EARLY STAGE OF CLINICAL TRIALS
 
    The  Company must obtain pre-market approval  ("PMA") from the U.S. Food and
Drug Administration (the  "FDA") before the  Company will be  able to offer  its
products  for transmyocardial revascularization ("TMR") on a commercial basis in
the U.S. A necessary prerequisite for submitting a PMA application is completion
of clinical testing to demonstrate the safety and effectiveness of the Company's
TMR products.
 
    The Company is currently at an early stage of clinical testing. The  Company
has  completed  Phase I  of its  initial  clinical study  and has  only recently
commenced Phase II,  the final  phase of  such study.  Phase II  will involve  a
minimum  of  126  patient  trials,  of  which  ten  trials  were  performed from
commencement of the trials on March 18, 1996 through March 31, 1996. The  study,
including  12-month  patient  follow-up  reviews, is  currently  expected  to be
completed by  the latter  half  of 1997.  However,  completion of  the  clinical
studies  on a timely basis will depend on the Company's ability to establish TMR
sites and enroll participating patients. In addition, the clinical studies  will
require  substantial  financial  and  management  resources.  There  can  be  no
assurance that the Company  will have the resources  necessary to complete  such
clinical  studies. Furthermore,  there can  be no  assurance that  the Company's
clinical studies will be completed  within the currently anticipated time  frame
or otherwise in a timely manner, nor that such clinical studies will demonstrate
the  safety  and  effectiveness of  the  Company's  TMR products  to  the extent
necessary  to  obtain  FDA  and  other  regulatory  approvals  and  establish  a
commercial  market for the Company's products.  Moreover, results of the initial
clinical testing are  not necessarily predictive  of results to  be achieved  in
later  clinical studies, if  undertaken, or commercially, if  a PMA is obtained.
Failure to complete  the Company's  clinical studies in  a timely  manner or  to
demonstrate  the safety  and effectiveness of  the Company's  TMR products could
delay or prevent regulatory approval  and would materially and adversely  affect
the  Company's business, financial condition and  results of operations. See "--
No Assurance  of FDA  Approval  or Other  Required Governmental  Approvals"  and
"Business -- Government Regulation."
 
NO ASSURANCE OF FDA OR OTHER REQUIRED GOVERNMENTAL APPROVALS
 
    The  Company's products are regulated in the  U.S. as medical devices by the
FDA under the Federal  Food, Drug, and  Cosmetic Act ("FDC  Act") and, as  such,
require  FDA approval of a PMA application  prior to commercial sale in the U.S.
The FDA approves PMA applications for  specific indications only and FDA  policy
prohibits  commercial marketing  of devices for  indications that  have not been
approved by the FDA. The process of obtaining required regulatory approvals from
the FDA and other  regulatory authorities is  lengthy, expensive and  inherently
uncertain,  generally takes several years or  longer to complete, if approval is
obtained at all,  and requires  the submission  of extensive  clinical data  and
supporting  information to the FDA. There can  be no assurance that FDA approval
of products developed by the Company will  be obtained on a timely basis, if  at
all.  Furthermore, there can be no assurance  that FDA approval will be obtained
for any or all indications sought by the Company. Failure to obtain FDA approval
on a timely basis or for the indications sought by the Company would  materially
and  adversely affect the Company's business, financial condition and results of
operations.
 
    Sales of  medical  devices  outside  of the  U.S.  are  subject  to  foreign
regulatory  requirements that vary widely by  country. In addition, the FDA must
approve the  export of  devices that  require a  PMA but  are not  yet  approved
domestically. The time required to obtain approval for sale in foreign countries
may  be  longer  or  shorter  than  that  required  for  FDA  approval,  and the
requirements may differ. Although the Company is seeking regulatory approval  to
begin marketing of its products outside the U.S., there can be no assurance that
such approval will be received on a timely basis, if at all.
 
                                       6
<PAGE>
    Foreign   and  domestic  regulatory  approvals,   if  granted,  may  include
significant limitations  on the  indicated uses  for which  the product  may  be
marketed.  In addition, to  obtain such approvals,  medical device manufacturers
must comply with  numerous other  requirements of  the FDA  and certain  foreign
regulatory  authorities. For example, the Company will be required to obtain the
European Conforming Mark (the "CE Mark") by June 1998 for its products in  order
to  continue to sell its  products after such date  in European Union countries.
Product approvals  can  be  withdrawn  for failure  to  comply  with  regulatory
standards  or because  of unforeseen  problems following  initial marketing. The
Company will also be required to follow applicable Good Manufacturing  Practices
("GMP") regulations of the FDA, which include testing, control and documentation
requirements,  as  well as  similar requirements  in other  countries, including
International Standards  Organization ("ISO")  9000 standards.  Failure to  meet
these  requirements would preclude the Company  from marketing its products on a
commercial basis,  and  therefore  would materially  and  adversely  affect  the
Company's business, financial condition and results of operations. See "Business
- - -- Government Regulation."
 
RISKS ASSOCIATED WITH NEW SURGICAL PROCEDURE; NO ASSURANCE OF MARKET ACCEPTANCE
 
    The  Company's ability to  successfully commercialize its  TMR products will
depend upon its ability to achieve acceptance of its TMR systems and  procedures
among   cardiologists,  cardiac  surgeons  and  other  members  of  the  medical
community. The Company believes that it  will not achieve such acceptance  until
such time, if any, as the Company's TMR products can be demonstrated to be safe,
efficacious and cost-effective. Even if the clinical safety and effectiveness of
the  Company's TMR products is  established, cardiologists, cardiac surgeons and
other members of the medical  community may elect not  to recommend TMR for  any
number  of other reasons. Broad  use of the Company's  TMR products will require
training of numerous physicians, and the time required to complete such training
could  adversely  affect  market  acceptance.  Moreover,  even  if  TMR  becomes
generally  accepted by the medical  community, physicians trained in competitive
TMR products may  elect not  to consider the  Company's products,  or may  elect
instead  to recommend a competitor's products. Failure of the Company's products
to achieve significant market acceptance  would materially and adversely  affect
the  Company's  business, financial  condition  and results  of  operations. See
"Business -- Regulatory Status" and " -- Competition."
 
DEPENDENCE ON SINGLE PRODUCT LINE
 
    The Company has elected to focus its resources on the continued  development
and refinement of its TMR products. If the Company is unable to obtain requisite
regulatory  approvals or to  achieve commercial acceptance  of its TMR products,
the Company's business, financial  condition and results  of operations will  be
materially and adversely affected and could result in cessation of the Company's
current business.
 
UNCERTAINTY REGARDING PATENTS AND PROTECTION OF PROPRIETARY TECHNOLOGY; RISKS OF
FUTURE LITIGATION
 
    The  Company's success will depend, in part, on its ability to obtain patent
protection for its  products, preserve  its trade secrets,  and operate  without
infringing  the proprietary rights of others. The Company's policy is to seek to
protect its  proprietary  position by,  among  other methods,  filing  U.S.  and
foreign   patent  applications   related  to  its   technology,  inventions  and
improvements that are important to the development of its business. The  Company
holds  five  U.S.  patents  and related  foreign  patents  relating  to surgical
treatment with lasers and fiber-optic handpieces,  and has applied for or is  in
the process of applying for additional patents relating to its laser technology,
TMR  applications and fiber-optic handpieces. There can be no assurance that any
of the  Company's  patents  or  patent  applications  will  not  be  challenged,
invalidated  or circumvented in the future or that the rights granted thereunder
will provide a competitive advantage. The Company intends to vigorously  protect
and  defend its intellectual property. It is uncertain whether patent protection
will continue to  be available for  surgical methods in  the future. Costly  and
time-consuming  litigation brought  by the Company  may be  necessary to enforce
patents issued to the Company, to protect trade secrets or know-how owned by the
Company,  or  to  determine  the  enforceability,  scope  and  validity  of  the
proprietary rights of others.
 
    The   Company  also  relies  upon  trade  secrets,  technical  know-how  and
continuing technological  innovation to  develop  and maintain  its  competitive
position. The Company typically requires its employees, consultants and advisors
to execute confidentiality and assignment of inventions agreements in connection
 
                                       7
<PAGE>
with  their employment, consulting  or advisory relationships  with the Company.
There can be no assurance, however,  that these agreements will not be  breached
or  that the Company will have adequate remedies for any breach. Furthermore, no
assurance  can  be  given  that  competitors  will  not  independently   develop
substantially  equivalent  proprietary information  and techniques  or otherwise
gain access to  the Company's proprietary  technology, or that  the Company  can
meaningfully protect its rights in unpatented proprietary technology.
 
    The  medical  device  industry in  general,  and the  industry  segment that
includes products for  the treatment  of cardiovascular  disease in  particular,
have  been  characterized by  substantial  competition and  litigation regarding
patent and other intellectual  property rights. In  this regard, competitors  of
the  Company have been issued  a number of patents  related to TMR. In September
1995, the Company received from a competitor a notice of potential  infringement
of  the competitor's patent regarding a method for TMR utilizing synchronization
of laser  pulses to  the beating  of the  heart. In  January 1996,  the  Company
received  from a  second competitor  a notice  of potential  infringement of the
competitor's patent regarding a  method to perform TMR  using fiber optics.  The
Company  has  concluded  in  each case,  following  discussion  with  its patent
counsel, that it  does not  utilize the process  and/or apparatus  which is  the
subject  of the patent at issue, and  has responded to the respective competitor
to such effect.  The Company has  received no further  correspondence on  either
matter.  There can be no assurance,  however, that further claims or proceedings
will not be initiated by either competitor, or that claims by other parties will
not arise in the future. Any such  claims in the future, with or without  merit,
could  be  time-consuming  and expensive  to  respond  to and  could  divert the
attention of the Company's technical  and management personnel. The Company  may
be  involved  in litigation  to  defend against  claims  of infringement  by the
Company, to enforce patents issued to  the Company, or to protect trade  secrets
of  the Company.  If any relevant  claims of  third party patents  are upheld as
valid and  enforceable  in  any litigation  or  administrative  proceeding,  the
Company  could be prevented  from practicing the subject  matter claimed in such
patents, or would be required to obtain licenses from the patent owners of  each
such patent or to redesign its products or processes to avoid infringement.
 
    Patent  applications in  the U.S.  are maintained  in secrecy  until patents
issue, and patent applications  in foreign countries  are maintained in  secrecy
for  a  period after  filing. Publication  of discoveries  in the  scientific or
patent literature  tends to  lag behind  actual discoveries  and the  filing  of
related patent applications. Accordingly, there can be no assurance that current
and  potential competitors  and other  third parties  have not  filed or  in the
future will not file  applications for, or  have not received  or in the  future
will  not receive,  patents or  obtain additional  proprietary rights  that will
prevent, limit or interfere with the Company's ability to make, use or sell  its
products either in the U.S. or internationally. In the event the Company were to
require  licenses to patents issued to third  parties, there can be no assurance
that such licenses would  be available or, if  available, would be available  on
terms  acceptable to the Company, or that the Company would be successful in any
attempt  to  redesign   its  products  or   processes  to  avoid   infringement.
Accordingly, an adverse determination in a judicial or administrative proceeding
or  failure  to  obtain  necessary  licenses  could  prevent  the  Company  from
manufacturing and selling  its products,  which would  materially and  adversely
affect  the Company's business,  financial condition and  results of operations.
See "Business -- Intellectual Property Matters" and "-- Competition."
 
EXPECTATION OF INTENSE MARKET COMPETITION
 
    The Company expects that the market for TMR, which is currently in the early
stages of development, will be intensely competitive. Competitors are likely  to
include  two  laser competitors,  PLC  Systems, Inc.  ("PLC")  and CardioGenesis
Corporation ("CardioGenesis"), both of which are currently selling TMR  products
for  investigational use in the U.S. and abroad. PLC has already received the CE
Mark which allows the sales of  its products commercially in all European  Union
countries.  Other  competitors may  include additional  companies that  elect to
enter the market,  including large companies  in the laser  and cardiac  surgery
markets.   Many  of  these  companies   have  significantly  greater  financial,
development, marketing and  other resources  than the  Company. In  the event  a
competitor  is able to obtain  a PMA for its products  prior to the Company, the
Company's ability  to compete  successfully could  be materially  and  adversely
affected.
 
    TMR  also competes  with other methods  for the  treatment of cardiovascular
disease, including drug therapy, PTCA and CABG. Although the Company is  seeking
to demonstrate the safety and effectiveness of
 
                                       8
<PAGE>
the   Company's  TMR  procedures  in  patients  for  whom  other  cardiovascular
treatments are not likely to provide relief, and in the future intends to pursue
the safety  and  effectiveness  of  TMR when  used  in  conjunction  with  other
treatments,  there can be no  assurance that the Company's  TMR products will be
accepted in these markets.  There can be no  assurance that physicians will  use
the Company's TMR procedures to replace or supplement established treatments, or
that  the Company's  TMR procedures will  be competitive with  current or future
technologies.  Such  competition  could  materially  and  adversely  affect  the
Company's business, financial condition and results of operations.
 
    Any  product developed  by the Company  that gains  regulatory approval will
face competition for market acceptance and market share. An important factor  in
such  competition  may  be  the timing  of  market  introduction  of competitive
products. Accordingly, the relative pace at which the Company is able to develop
products, complete  clinical testing  and  regulatory approval  processes,  gain
third  party reimbursement  acceptance and  supply commercial  quantities of the
product to the market  are expected to be  important competitive factors.  There
can  be  no assurance  that the  Company  will be  able to  compete successfully
against current and future  competitors. Failure to do  so would materially  and
adversely  affect  the Company's  business, financial  condition and  results of
operations. See "Business -- Competition."
 
LIMITED HISTORY OF TMR OPERATIONS; HISTORY OF OPERATING LOSSES
 
    Although the  Company  commenced  operations in  June  1989,  the  Company's
operations  to  date have  consisted primarily  of the  manufacture and  sale of
non-TMR related  laser  products  and accessories.  The  Company  commenced  its
operations  and clinical studies with respect to TMR products in September 1995,
and accordingly  has limited  experience to  date with  the TMR  market and  TMR
products.
 
    From  inception to  December 31, 1995,  the Company  incurred cumulative net
losses of approximately  $5.9 million.  As of March  31, 1996,  the Company  had
overdue obligations and indebtedness of approximately $375,000 and $1.3 million,
respectively, which are expected to be paid out of the proceeds of the Offering.
The  Company's revenues  and operating  income will  continue to  be constrained
until such time, if ever, as FDA  and other regulatory approval is obtained  for
the  Company's TMR products, and for an indefinite period of time after any such
approval is  obtained. Furthermore,  the  Company expects  its expenses  in  all
categories  to  increase as  its clinical  trial  and other  business activities
expand. Hence,  there can  be no  assurance  that the  Company will  achieve  or
sustain  profitability in the future.  Failure to achieve significant commercial
revenues or profitability  would materially and  adversely affect the  Company's
business, financial condition and results of operations. See "Use of Proceeds."
 
POTENTIAL DIFFICULTIES IN MANAGING BUSINESS UNDERGOING RAPID CHANGE
 
    The  Company's future  success will  depend to  a significant  extent on the
ability of its current and  future management personnel to operate  effectively,
both  independently and as a  group. In this regard, a  number of members of the
Company's  senior  management  team  have  only  recently  joined  the  Company.
Moreover,  certain members of such management team have limited or no experience
as a senior executive of  a public corporation. There  can be no assurance  that
the  management team will operate  together effectively. To compete successfully
against current and  future competitors, complete  clinical trials in  progress,
prepare additional products for clinical trials and develop future products, the
Company believes that it must continue to expand its operations, particularly in
the  areas  of  research and  development,  sales and  marketing,  training, and
manufacturing. If  the Company  were  to experience  significant growth  in  the
future,  such growth would  likely result in  new and increased responsibilities
for management  personnel  and  place  significant  strain  upon  the  Company's
management,  operating and financial systems  and resources. To accommodate such
growth and  compete effectively,  the  Company must  continue to  implement  and
improve  information  systems, procedures  and controls,  and to  expand, train,
motivate and manage its work force. There can be no assurance that the Company's
personnel, systems,  procedures and  controls will  be adequate  to support  the
Company's  future operations. Any failure to implement and improve the Company's
operational, financial and management systems  or to expand, train, motivate  or
manage  employees could materially and  adversely affect the Company's business,
financial condition  and  results  of  operations. See  "--  Dependence  on  Key
Personnel,"  "Business -- Employees" and  "Management -- Directors and Executive
Officers."
 
                                       9
<PAGE>
POTENTIAL FLUCTUATIONS IN OPERATING RESULTS
 
    Results of operations are expected  to fluctuate significantly from  quarter
to  quarter depending upon numerous factors, including the timing and results of
clinical trials; delays associated  with the FDA  and other regulatory  approval
processes;  health  care  reform  and  reimbursement  policies;  demand  for the
Company's  products;  changes  in  pricing  policies  by  the  Company  or   its
competitors; the number, timing and significance of product enhancements and new
product  announcements by  the Company and  its competitors; the  ability of the
Company to  develop, introduce  and  market new  and  enhanced versions  of  the
Company's  products on a timely basis;  customer order deferrals in anticipation
of new or enhanced products offered  by the Company or its competitors;  product
quality  problems; personnel changes; changes in Company strategy; and the level
of international  sales. Quarter  to  quarter operating  results could  also  be
affected  by  the timing  of the  receipt of  individual customer  orders, order
fulfillment and revenue recognition with respect to small numbers of  individual
laser  base  units,  since  each  unit  carries  a  high  price  per  unit.  See
"Management's Discussion  and Analysis  of Financial  Condition and  Results  of
Operations,"  and "Business -- Regulatory Status," "-- Sales and Marketing," "--
Manufacturing and Quality Assurance" and "-- Government Regulation."
 
RISKS OF TECHNOLOGICAL CHANGE
 
    Significant resources  are continually  being expended  to develop  new  and
improved  treatment methodologies for coronary  artery disease. Accordingly, the
market acceptance  and commercial  success  of the  Company's TMR  products  and
procedures will depend not only on the safety and effectiveness of the Company's
TMR  products and procedures  but also the relative  safety and effectiveness of
alternative treatment measures, which alternatives could potentially include new
treatments or improvements or adjuncts to existing treatments. Accordingly,  the
improvement  of  existing alternative  treatment  measures or  emergence  of new
alternative treatments  would  materially  and adversely  affect  the  Company's
business, financial condition and results of operations.
 
UNCERTAINTY REGARDING THIRD PARTY REIMBURSEMENT
 
    The  Company  expects that  its  ability to  successfully  commercialize its
products will  depend significantly  on the  availability of  reimbursement  for
surgical procedures using the Company's products from third party payors such as
governmental programs, private insurance and private health plans. Reimbursement
is  a  significant  factor considered  by  hospitals in  determining  whether to
acquire new equipment.  Notwithstanding FDA  approval, if  granted, third  party
payors may deny reimbursement if the payor determines that a therapeutic medical
device  is unnecessary, inappropriate, not  cost-effective or experimental or is
used for a non-approved indication.
 
    The Health  Care Financing  Administration ("HCFA")  has recently  issued  a
policy   indicating   that  Medicare   coverage  will   not  be   precluded  for
investigational procedures furnished in  accordance with FDA-approved  protocols
governing   clinical  trials.  TMR  procedures  performed  using  the  Company's
products, in the limited trials  to date, have received Medicare  reimbursement.
There  can  be  no  assurance,  however,  that  HCFA  will  continue  to provide
reimbursement for TMR, or will continue to provide such reimbursement at  levels
adequate to permit hospitals to perform the Company's TMR procedures.
 
    There can be no assurance as to whether third party payors will cover TMR or
as to the levels of reimbursement. There also can be no assurance that levels of
reimbursement,  if any,  will not  be decreased  in the  future, or  that future
legislation, regulation, or  reimbursement policies of  third party payors  will
not  otherwise adversely  affect the  demand for  the Company's  products or its
ability to sell its products on  a profitable basis. Fundamental reforms in  the
healthcare industry in the U.S. and Europe that could affect the availability of
third  party  reimbursement  continue to  be  proposed, and  the  Company cannot
predict the timing or effect of any such proposal. If third party payor coverage
or reimbursement is unavailable or inadequate, the Company's business, financial
condition and results of operations could be materially and adversely  affected.
See "Business -- Third Party Reimbursement."
 
LIMITED SALES, MARKETING AND DISTRIBUTION SYSTEMS
 
    The  Company  has  made limited  sales  of  its TMR  products  to  date, for
investigational use  only. Accordingly,  the Company  has maintained  a  limited
sales  and marketing organization in  the U.S. and abroad.  The Company plans to
market its TMR products, if approved, through  a direct sales force in the  U.S.
 
                                       10
<PAGE>
and through a relationship with a major cardiovascular surgical products company
or  companies for international sales. Establishment of a sales force capable of
effectively commercializing the Company's TMR products will require  substantial
efforts and require significant management and financial resources. There can be
no  assurance that the Company will be able to establish such a sales capability
on a timely  basis, if  at all.  Moreover, there can  be no  assurance that  the
Company's  international  distributor  or  distributors  will  devote sufficient
resources to development of  the markets for the  Company's products or will  be
successful  in  such  commercialization  efforts.  See  "Business  --  Sales and
Marketing."
 
RISK OF PRODUCT LIABILITY
 
    The Company faces an inherent and  significant business risk of exposure  to
product  liability claims in the  event that the use  of its products results in
personal injury or death,  and there can be  no assurance that material  product
liability  claims will not  be assessed against  the Company in  the future. The
Company maintains insurance against product liability claims in the amount of $1
million per occurrence and $1 million in  the aggregate, and expects to seek  to
increase  such coverage if and when a PMA  is obtained. However, there can be no
assurance that such coverage will continue to be available in the amount desired
or on terms acceptable to  the Company, or that  such coverage will be  adequate
for  liabilities actually incurred. Also, in the event that any of the Company's
products prove  to  be defective,  the  Company may  be  required to  recall  or
redesign  such products. Any uninsured or underinsured claim brought against the
Company or any claim or  product recall that results  in significant cost to  or
adverse  publicity against the Company could materially and adversely affect the
Company's business, financial condition and results of operations. See "Business
- - -- Product Liability and Insurance."
 
LIMITED MANUFACTURING EXPERIENCE; DEPENDENCE ON KEY SUPPLIERS
 
    The Company's success will depend in part on its ability to manufacture  its
products in a timely, cost-effective manner and in compliance with GMP, ISO 9000
and  other regulatory requirements. The manufacture of the Company's products is
a labor-intensive, complex  operation involving a  number of separate  processes
and  components. The Company's  manufacturing activities to  date have consisted
primarily of manufacturing  limited quantities  of systems for  use in  clinical
trials.  The Company does  not have experience in  manufacturing its products in
the commercial  quantities  that  might  be required  if  the  Company  receives
regulatory approval for its TMR products. Furthermore, as a condition to receipt
of  PMA approval,  the Company's  facilities, procedures  and practices  will be
subject to pre-approval and ongoing GMP inspections by FDA.
 
    Manufacturers often encounter  difficulties in scaling  up manufacturing  of
new  products, including problems involving  product yields, quality control and
assurance, component and service availability, adequacy of control policies  and
procedures,  lack of qualified  personnel, compliance with  FDA regulations, and
the need for further FDA approval of new manufacturing processes and facilities.
There can be no assurance that  manufacturing yields, costs or quality will  not
be  adversely affected as the Company seeks to increase production, and any such
adverse effect could  materially and  adversely affect  the Company's  business,
financial condition and results of operations.
 
    The  Company currently  purchases certain  laser and  fiber-optic components
from single sources.  Although the Company  has identified alternative  vendors,
the qualification of additional or replacement vendors for certain components or
services is a lengthy process. There can be no assurance that materials obtained
from  outside suppliers will continue to  be available in adequate quantities or
at the times required by the Company or that the Company will be able to  locate
alternative  suppliers on  a timely  basis. Any  significant supply interruption
would have a material adverse effect on the Company's ability to manufacture its
products and, therefore,  would materially  and adversely  affect the  Company's
business,  financial condition and results of operations. The Company expects to
manufacture its  products based  on forecasted  product orders,  and intends  to
purchase  subassemblies and components prior to  receipt of purchase orders from
customers. Lead times for materials and  components ordered by the Company  vary
significantly,  and  depend on  factors such  as the  business practices  of the
specific supplier, contract terms and general demand for a component at a  given
time.  As a result, there is a risk  of excess or inadequate inventory if orders
do not match forecasts. See "Business -- Manufacturing and Quality Assurance."
 
                                       11
<PAGE>
DEPENDENCE ON KEY PERSONNEL
 
    The Company's future  business and operating  results depend in  significant
part upon the continued contributions of its key technical and senior management
personnel, including Douglas Murphy-
Chutorian,  M.D., the Company's Chief Executive Officer. The Company maintains a
key person life  insurance policy on  Dr. Murphy-Chutorian in  the amount of  $2
million.  The Company's  future business  and operating  results also  depend in
significant part upon  its ability  to attract and  retain qualified  additional
management,  manufacturing, technical, marketing and sales and support personnel
for its operations. Competition for such personnel is intense, and there can  be
no assurance that the Company will be successful in attracting or retaining such
personnel.  The loss  of any key  employee, the  failure of any  key employee to
perform in his or  her current position, or  the Company's inability to  attract
and  retain skilled employees, as needed,  could materially and adversely affect
the Company's  business,  financial condition  and  results of  operations.  See
"Management -- Directors and Executive Officers."
 
NO PRIOR TRADING MARKET FOR COMMON STOCK; 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 trading market  will
develop  or be sustained  after the Offering. The  initial public offering price
has  been   determined  through   negotiations  among   the  Company   and   the
representatives  of the  Underwriters based  on several  factors and  may not be
indicative of  the market  price of  the Common  Stock after  the Offering.  The
market  price of  the Common Stock  is likely to  be highly volatile  and may be
significantly affected by factors such as actual or anticipated fluctuations  in
the Company's operating results, announcements of technological innovations, new
products  or new contracts by the  Company or its competitors, developments with
respect to patents or proprietary rights,  conditions and trends in the  medical
device  and other technology industries, healthcare reform measures, adoption of
new accounting  standards  affecting the  medical  device industry,  changes  in
financial  estimates by securities analysts, general market conditions and other
factors. In  addition,  the stock  market  has  from time  to  time  experienced
significant  price and volume  fluctuations that have  particularly affected the
market prices for the common stocks of early stage companies. These broad market
fluctuations may materially and adversely affect the market price of the  Common
Stock.  In the past,  following periods of  volatility in the  market price of a
particular company's securities,  securities class action  litigation has  often
been  brought  against that  company. Such  litigation,  if brought  against the
Company, could  result in  substantial  costs and  a diversion  of  management's
attention and resources. See "Underwriting."
 
CONCENTRATION OF SHARE OWNERSHIP
 
    Upon  completion  of  the  Offering,  the  present  directors  and executive
officers of the Company and their affiliates will beneficially own approximately
33.1% of the outstanding Common Stock.  As a result, these shareholders will  be
able  to  exercise  significant  influence  over  matters  requiring shareholder
approval, including  the  election  of directors  and  approval  of  significant
corporate  transactions. Such concentration of ownership  may have the effect of
delaying or  preventing a  change  in control  of  the Company.  See  "Principal
Shareholders."
 
SHARES ELIGIBLE FOR FUTURE SALE; REGISTRATION RIGHTS
 
    Sales of a substantial number of shares of Common Stock in the public market
following  the Offering could  adversely affect the market  price for the Common
Stock. The number of  shares of Common  Stock available for  sale in the  public
market  is limited by restrictions under the  Securities Act of 1933, as amended
(the "Securities Act"),  and by lock-up  agreements under which  the holders  of
such  shares have agreed not to sell or otherwise dispose of any of their shares
for a period of  180 days after  the date of this  Prospectus without the  prior
written  consent of PaineWebber  Incorporated. However, PaineWebber Incorporated
may, in its sole discretion and at  any time without notice, release all or  any
portion  of the securities subject  to lock-up agreements. As  a result of these
restrictions, based on shares  outstanding as of  May 15, 1996,  on the date  of
this  Prospectus,  a total  of 642,267  shares other  than the  4,000,000 shares
offered hereby will be eligible for  sale; an additional 228,693 shares will  be
eligible  for sale 90  days after the  date of this  Prospectus pursuant to Rule
144; an additional 8,695,188 shares will be eligible for sale 180 days after the
date of  this  Prospectus  under  Rule  144,  upon  expiration  of  the  lock-up
agreements.  In addition, the Company intends  to register on the effective date
of the  Offering  a  total  of  4,444,756 shares  of  Common  Stock  subject  to
outstanding  options or reserved  for issuance under  the Company's Stock Option
Plan, Director Stock Option Plan and Employee
 
                                       12
<PAGE>
Stock Purchase Plan. Further, upon expiration of the lock-up agreements referred
to above, holders  of approximately 10,253,016  shares of Common  Stock will  be
entitled to certain registration rights, including 217,917 shares which have the
right  to demand  registration. Such demands  may be  made as early  as 180 days
following the  Offering.  If  such holders,  by  exercising  their  registration
rights,  cause a large number of shares to  be registered and sold in the public
market, such sales could  materially and adversely affect  the market price  for
the  Common Stock. See "Description of Capital Stock -- Registration Rights" and
"Shares Eligible for Future Sale."
 
IMMEDIATE AND SUBSTANTIAL DILUTION
 
    The initial public  offering price for  the Common Stock  is expected to  be
substantially higher than the net tangible book value per share of Common Stock.
Accordingly,  investors purchasing shares  of Common Stock  in the Offering will
incur immediate and  substantial dilution  of $12.23  per share.  To the  extent
outstanding  options to purchase  the Common Stock are  exercised, there will be
further dilution. See  "Dilution" and "Management's  Discussion and Analysis  of
Financial   Condition  and  Results  of  Operations  --  Liquidity  and  Capital
Resources."
 
DISCRETION OF MANAGEMENT IN USE OF PROCEEDS
 
    The net  proceeds of  the Offering  are estimated  to be  approximately  $58
million,  after deducting  underwriting discounts and  commissions and estimated
offering expenses payable by the Company. While the Company anticipates that  it
will  utilize approximately  $15 million  of the  net proceeds  for research and
development, approximately  $15 million  for expansion  of sales  and  marketing
resources,   approximately  $3  million   for  capital  expenditures,  including
expansion  of  manufacturing  facilities,  and  approximately  $2  million   for
repayment  of outstanding  indebtedness, and that  the balance  of the proceeds,
approximately $21 million, will be used for general corporate purposes including
working capital, management of the Company will have complete discretion of  the
application   of  the  proceeds.  There  can   be  no  assurance  that  business
developments and  opportunities will  not  require the  Company to  utilize  the
proceeds  in a manner different than presently anticipated, or that the Board of
Directors and management  will not determine  for other reasons  to utilize  the
proceeds in a different manner.
 
POTENTIAL NEED FOR ADDITIONAL CAPITAL
 
    Although  the Company  anticipates that  the net  proceeds of  the Offering,
together with sales of products for  investigational use, will be sufficient  to
meet  the Company's  capital requirements through  at least  calendar year 1997,
there can be no assurance that  the Company will not require additional  sources
of  cash at an earlier date. This will  depend upon the progress of expansion of
the Company's  clinical trials  and  any need  for  additional trials  or  other
testing  of the Company's products, and  the timing of required expenditures. If
the Company is required to obtain additional financing in the future, there  can
be  no  assurance that  capital will  be  available on  terms acceptable  to the
Company, if  at all.  See  "Management's Discussion  and Analysis  of  Financial
Condition and Results of Operations -- Liquidity and Capital Resources."
 
                                       13
<PAGE>
                                USE OF PROCEEDS
 
    The  net proceeds to be received by the  Company from the sale of the Common
Stock  offered  hereby  are  estimated  to  be  $58  million,  after   deducting
underwriting  discounts and commissions and  estimated offering expenses payable
by the Company.
 
    The Company anticipates that approximately  $15 million of the net  proceeds
will  be utilized  for research and  development, including  funding of clinical
trials in support of regulatory  and reimbursement approvals; approximately  $15
million   will  be  used  for  expansion   of  sales  and  marketing  resources;
approximately $3  million  will  be used  for  capital  expenditures,  including
expansion of manufacturing facilities; and approximately $2 million will be used
for  repayment of outstanding indebtedness in  the aggregate principal amount of
approximately $1.7 million (including debt in the aggregate principal amount  of
$50,000  held by one director  of the Company) plus  accrued interest thereon in
the aggregate  amount  of $276,000  at  March 31,  1996.  The remainder  of  the
proceeds, estimated at approximately $21 million, will be used for other general
corporate  purposes including working capital. Of the indebtedness to be repaid,
$1 million bears interest at  the rate of 6% per  annum and matures on  December
31,  1996, $375,000 bears interest at the rate of 10% per annum and is currently
due, and the remainder bears interest at  the rate of 10% per annum and  matures
on  December 31, 1996.  Proceeds not immediately  used will be  held as cash and
will be invested in short-term marketable securities. Management of the  Company
will  have  complete  discretion  in  the application  of  the  proceeds  of the
Offering. See "Risk Factors -- Discretion of Management in Use of Proceeds."
 
    The foregoing represents estimates only, and the actual amounts expended  by
the  Company for these purposes and the  timing of such expenditures will depend
on numerous factors, including the status of the Company's development  efforts,
actions  relating  to  regulatory matters,  including  the extent  to  which the
Company may be required to extend or  expand its clinical trials, the extent  to
which the Company's products gain market acceptance, and competitive factors.
 
                                DIVIDEND POLICY
 
    The Company has never paid a cash dividend on its capital stock and does not
anticipate  paying any  cash dividends  on the  Common Stock  in the foreseeable
future, as it  intends to  retain its earnings,  if any,  to generate  increased
growth and for general corporate purposes.
 
                                       14
<PAGE>
                                 CAPITALIZATION
 
    The  following table sets  forth the capitalization of  the Company at March
31, 1996 and  as adjusted to  give effect to  the sale of  the shares of  Common
Stock offered hereby and the application of the estimated net proceeds therefrom
as described in "Use of Proceeds."
 
<TABLE>
<CAPTION>
                                                                                                MARCH 31, 1996
                                                                                            ----------------------
                                                                                                           AS
                                                                                             ACTUAL    ADJUSTED(1)
                                                                                            ---------  -----------
<S>                                                                                         <C>        <C>
                                                                                                (IN THOUSANDS)
Current portion of long-term debt.........................................................  $   1,691   $       8
                                                                                            ---------  -----------
                                                                                            ---------  -----------
Long-term debt less current portion.......................................................  $      23   $      23
Shareholders' equity:
  Preferred Stock, no par value; 5,000,000 shares authorized,
   no shares issued and outstanding.......................................................         --          --
  Common Stock, no par value; 50,000,000 shares authorized;
   11,682,396 shares issued and outstanding (actual);
   15,682,396 shares issued and outstanding (as adjusted) (2).............................      6,659      65,079
  Accumulated deficit.....................................................................     (5,939)     (5,939)
                                                                                            ---------  -----------
   Total shareholders' equity.............................................................        720      59,140
                                                                                            ---------  -----------
   Total capitalization...................................................................  $     743   $  59,163
                                                                                            ---------  -----------
                                                                                            ---------  -----------
</TABLE>
 
- - ------------------------
(1)  As adjusted to give  effect to the estimated  net proceeds of the Offering.
    See "Use of Proceeds."
 
(2) Excludes as of March 31, 1996 (i) 2,633,751 shares of Common Stock  issuable
    upon  exercise of outstanding options under the Company's Stock Option Plan,
    and 1,361,005  additional shares  reserved for  future issuance  under  such
    plan,  (ii)  18,000  shares  of  Common  Stock  issuable  upon  exercise  of
    outstanding options  under  the Company's  Director  Stock Option  Plan  and
    182,000  additional  shares reserved  for future  issuance under  such plan,
    (iii) 250,000 shares of Common Stock reserved for future issuance under  the
    Company's  Employee Stock Purchase Plan and  (iv) 1,171,638 shares of Common
    Stock issuable upon  exercise of  outstanding warrants.  See "Management  --
    Stock  Option Plan,"  "-- Director  Stock Option  Plan," "--  Employee Stock
    Purchase Plan" and "Description of Capital Stock -- Warrants."
 
                                       15
<PAGE>
                                    DILUTION
 
    The  net  tangible  book  value  of  the  Company  at  March  31,  1996  was
approximately  $720,000 or $0.06  per share of Common  Stock. "Net tangible book
value" per share is equal to the Company's total tangible assets less its  total
liabilities,  divided by the number of shares of Common Stock outstanding. After
giving effect to the sale of 4,000,000 shares of Common Stock offered hereby and
the application of the estimated net proceeds therefrom as described in "Use  of
Proceeds,"  the pro forma  net tangible book  value of the  Company at March 31,
1996 would  have  been  approximately  $59,140,000  or  $3.77  per  share.  This
represents  an immediate increase in net tangible  book value of $3.71 per share
to existing shareholders and an immediate dilution in net tangible book value of
$12.23 per share to  purchasers of Common Stock  in the Offering. The  following
table illustrates this per share dilution:
 
<TABLE>
<S>                                                                    <C>        <C>
Initial public offering price per share (1)..........................             $   16.00
  Net tangible book value per share prior to the Offering............  $    0.06
  Increase per share attributable to sales of shares in the
   Offering..........................................................       3.71
                                                                       ---------
Pro forma net tangible book value per share after the Offering.......                  3.77
                                                                                  ---------
Dilution in net tangible book value per share to purchasers in the
 Offering............................................................             $   12.23
                                                                                  ---------
                                                                                  ---------
</TABLE>
 
    The  following table summarizes, on a pro  forma basis as of March 31, 1996,
the number  of shares  of Common  Stock purchased  from the  Company, the  total
consideration  paid  and  the  average  price per  share  paid  by  the existing
shareholders and by the purchasers of shares in the Offering.
 
<TABLE>
<CAPTION>
                                                       SHARES PURCHASED          TOTAL CONSIDERATION         AVERAGE
                                                   -------------------------  --------------------------      PRICE
                                                      NUMBER       PERCENT       AMOUNT        PERCENT      PER SHARE
                                                   ------------  -----------  -------------  -----------  -------------
<S>                                                <C>           <C>          <C>            <C>          <C>
Existing shareholders............................    11,682,396       74.5%   $   6,659,000        9.4%     $    0.57
New investors....................................     4,000,000       25.5       64,000,000       90.6          16.00
                                                   ------------    -----      -------------    -----
  Total..........................................    15,682,396      100.0%   $  70,659,000      100.0%
                                                   ------------    -----      -------------    -----
                                                   ------------    -----      -------------    -----
</TABLE>
 
- - ------------------------
 
(1) Before  deducting  underwriting  discounts  and  commissions  and  estimated
    offering expenses payable by the Company.
 
    The  foregoing tables do not  give effect to the  exercise of any options or
warrants subsequent to March 31, 1996. As  of May 15, 1996 (i) 2,662,526  shares
of  Common Stock  were issuable upon  exercise of outstanding  options under the
Company's Stock Option Plan, and  1,332,230 additional shares were reserved  for
future  issuance  under  such plan,  (ii)  33,000  shares of  Common  Stock were
issuable upon exercise of outstanding options under the Company's Director Stock
Option Plan  and 167,000  additional shares  were reserved  for future  issuance
under  such plan, (iii) 250,000 shares of  Common Stock were reserved for future
issuance under the  Company's Employee  Stock Purchase Plan  and (iv)  1,171,638
shares  of Common Stock were issuable upon exercise of outstanding warrants. See
"Management -- Stock Option Plan," "-- Director Stock Option Plan," "-- Employee
Stock Purchase Plan" and "Description of Capital Stock -- Warrants."
 
                                       16
<PAGE>
                            SELECTED FINANCIAL DATA
 
    The following selected financial data as  of December 31, 1994 and 1995  and
for  the  years ended  December 31,  1993, 1994  and 1995  are derived  from the
Company's audited financial  statements included elsewhere  in this  Prospectus.
The  selected financial data as of December 31,  1991, 1992 and 1993 and for the
years ended  December 31,  1991  and 1992  are  derived from  audited  financial
statements  of  the  Company  not  included  in  this  Prospectus.  The selected
financial data as of  March 31, 1996  and for the three  months ended March  31,
1995  and 1996  are derived  from the  Company's unaudited  financial statements
included elsewhere  in  this Prospectus.  In  the opinion  of  management,  such
unaudited  financial  statements  contain all  adjustments  (consisting  of only
normal  recurring  adjustments)  necessary  for  a  fair  presentation  of   the
information  set forth therein.  The results of operations  for the three months
ended March 31, 1996 are not necessarily  indicative of the results that may  be
expected  for the full  year. The following  data should be  read in conjunction
with the financial statements of the  Company, including the notes thereto.  See
"Management's  Discussion  and Analysis  of Financial  Condition and  Results of
Operations" and "Financial Statements."
 
<TABLE>
<CAPTION>
                                                                                                  THREE MONTHS
                                                      YEAR ENDED DECEMBER 31,                   ENDED MARCH 31,
                                       -----------------------------------------------------  --------------------
                                         1991       1992       1993       1994       1995       1995       1996
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
<S>                                    <C>        <C>        <C>        <C>        <C>        <C>        <C>
                                                        (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
STATEMENT OF OPERATIONS DATA:
Net revenues.........................  $   3,289  $   2,645  $   2,105  $   2,020  $   2,707  $     528  $   1,752
Cost of revenues.....................      1,389      1,108      1,013      1,173      1,642        382        502
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Gross profit.....................      1,900      1,537      1,092        847      1,065        146      1,250
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
Operating expenses:
  Research and development...........        813        920        906        971      1,010        195        517
  Sales and marketing................        333        620        794        392        879        191        396
  General and administrative.........        367        546        325      1,031        681        199        211
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
Total operating expenses.............      1,513      2,086      2,025      2,394      2,570        585      1,124
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Operating income (loss)..........        387       (549)      (933)    (1,547)    (1,505)      (439)       126
Interest and other income (expense),
 net.................................        (23)       (19)        (3)      (435)      (921)      (221)       (50)
Provision for income taxes...........         35         --         --         --         --         --         --
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Net income (loss)................  $     329  $    (568) $    (936) $  (1,982) $  (2,426) $    (660) $      76
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Net income (loss) per share......  $    0.03  $   (0.05) $   (0.08) $   (0.16) $   (0.19) $   (0.05) $    0.01
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Shares used in per share
     calculations....................     10,491     10,537     11,676     12,526     12,765     12,765     14,863
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Supplemental net income (loss)
     (1).............................         --         --         --         --  $  (2,298)        --  $     108
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Supplemental net income (loss)
     per share (1)...................         --         --         --         --  $   (0.18)        --  $    0.01
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
    Shares used in supplemental per
     share calculation (1)...........         --         --         --         --     12,884         --     14,987
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                       ---------  ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                           DECEMBER 31,
                                                       -----------------------------------------------------   MARCH 31,
                                                         1991       1992       1993       1994       1995        1996
                                                       ---------  ---------  ---------  ---------  ---------  -----------
<S>                                                    <C>        <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
Cash and cash equivalents............................  $     302  $     103  $     131  $     132  $     123   $   1,277
Working capital (deficit)............................        102        (67)       834        657     (1,549)        468
Total assets.........................................        916      1,115      1,953      2,922      2,459       4,679
Long-term obligations less current
 portion.............................................         66         34         --      1,009         --          23
Accumulated deficit..................................       (104)      (672)    (1,607)    (3,589)    (6,015)     (5,939)
Total shareholders' equity (deficit).................        174         71      1,011       (139)    (1,429)        720
</TABLE>
 
- - ------------------------
(1) Supplemental net income, supplemental net  income per share and shares  used
    in  supplemental per share  calculation for 1995 and  the three months ended
    March 31, 1996 were calculated assuming  that the indebtedness to be  repaid
    with  the net proceeds of  the Offering had been  repaid at the beginning of
    each such period  using the assumed  proceeds from the  sale of the  minimum
    number  of  shares  required  to  retire  such  indebtedness.  See  "Use  of
    Proceeds."
 
                                       17
<PAGE>
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
    THE  FOLLOWING DISCUSSION CONTAINS  FORWARD-LOOKING STATEMENTS WHICH INVOLVE
RISKS AND UNCERTAINTIES. THE COMPANY'S ACTUAL RESULTS AND THE TIMING OF  CERTAIN
EVENTS  COULD DIFFER MATERIALLY  FROM THOSE ANTICIPATED  BY SUCH FORWARD-LOOKING
STATEMENTS AS  A  RESULT  OF  CERTAIN  FACTORS  DISCUSSED  IN  THIS  PROSPECTUS,
INCLUDING THOSE SET FORTH UNDER "RISK FACTORS."
 
OVERVIEW
 
    The  Company was  founded in  1989 as an  outgrowth of  certain research and
development efforts initially undertaken by the Company's founders in the  early
1980s  related to the  use of laser technology  to treat cardiovascular disease.
From 1989 through September 1995,  the Company engaged in research,  development
and  sale  of  surgical  laser  products  principally  for  procedures  such  as
atherectomy and arthroscopy. In  1993, the Company created  and spun off to  its
shareholders  a balloon angioplasty company,  Atlantis Catheter Company, Inc. In
1995, the Company determined that there is a significant opportunity in the  TMR
market,  and that the Company is well-positioned to enter this market because of
the Company's expertise with laser-based  surgical techniques and the  treatment
of  cardiovascular disease. Accordingly,  in late 1995,  the Company changed its
strategic direction and began  to apply its laser  expertise toward the  nascent
TMR market.
 
    Since  late  1995,  the  Company  has  been  engaged  in  restructuring  its
operations  and  expanding  its  management  team  in  order  to  focus  on  the
development  and commercialization of  its TMR products.  In September 1995, the
Company received  an IDE  allowing it  to  begin selling  its TMR  products  for
investigational use only, and commenced clinical trials in the United States and
Europe  in November  1995. In 1995  and the  first quarter of  1996, the Company
installed a total of six and twelve TMR systems in hospitals, respectively.
 
    To date,  the  Company  has  focused  almost  exclusively  on  research  and
development  activities  relating  to  surgical  laser  products,  substantially
contributing to annual operating losses since inception. At March 31, 1996,  the
Company  had an  accumulated deficit of  $5.9 million.  Research and development
efforts have been funded primarily through  private placements of equity in  the
aggregate  amount of $6.6  million since inception  and periodic borrowings from
shareholders. The Company expects to continue to incur operating losses  related
to   research  and  development  activities,  including  clinical  studies,  the
expansion of  sales and  marketing resources  and the  continued development  of
corporate  infrastructure. The timing and  amounts of the Company's expenditures
will depend upon a  number of factors, including  the progress of the  Company's
clinical  trials, the  status and timing  of regulatory approval,  the timing of
market acceptance, if any, of the  Company's products, and the efforts  required
to develop the Company's sales and marketing organization.
 
RESULTS OF OPERATIONS
 
REVENUES
 
    Revenues  increased from $2.1  million in 1993  and $2.0 million  in 1994 to
$2.7 million in  1995, and were  $1.8 million in  the first quarter  of 1996  as
compared to $528,000 in the first quarter of 1995 and $1.0 million in the fourth
quarter  of 1995.  The increases in  1995 as compared  to 1994 and  in the first
quarter of  1996 as  compared to  the first  and fourth  quarters of  1995  were
primarily  due to commencement of sales of the Company's TMR products at the end
of 1995. These increases also resulted in an increase in accounts receivable  to
$1.4  million at March 31,  1996 from $532,000 at  December 31, 1995. Sales were
relatively flat  from  1993  to 1994  as  increased  revenues from  one  of  the
Company's  early product lines offset reduced sales of laser systems for another
early product line. Since 1995, the Company has focused on the TMR market. Sales
of non-TMR related surgical products were 100% of revenues in 1993 and 1994, 68%
of revenues in 1995, and 10% of revenues in the first three months of 1996.
 
    Future revenues could  be affected by  the timing  and manner of  sale of  a
limited  number of units of  TMR laser systems. In  order to assist hospitals in
making the substantial investment in the Company's laser system, which carries a
list price of $295,000,  the Company intends  either to sell  the system to  the
hospital  outright or to place the system  with the hospital for a placement fee
(currently $25,000) plus an additional
 
                                       18
<PAGE>
fee for each procedure performed. In light of the relatively high list price  of
the  Company's laser base units, the  timing of individual orders and shipments,
as well as  the manner of  sale, could significantly  impact quarter to  quarter
results.
 
GROSS PROFIT
 
    Gross  profit decreased from $1.1  million in 1993 to  $847,000 in 1994, and
increased to $1.1 million in 1995 and $597,000 in the fourth quarter of 1995. In
the first quarter of 1996, gross profit increased to $1.3 million from  $146,000
in  the first quarter of 1995. Gross margin decreased from 52% in 1993 to 42% in
1994 and 39%  in 1995,  and increased to  71% in  the first quarter  of 1996  as
compared  to 28% in the first  quarter of 1995 and 58%  in the fourth quarter of
1995. The increase in gross profit  from 1994 to 1995 reflected commencement  of
sales  of  TMR products  in late  1995, offset  in large  part by  the Company's
decision in  1995  to  deemphasize  sales of  other,  non-TMR  related  surgical
products.  The declines in gross margin from 1993  to 1994 and from 1994 to 1995
were each  attributable to  changes in  sales mix  in favor  of certain  of  the
Company's  non-TMR surgical  products which  generated lower  margins than other
such non-TMR surgical  products, as  well as  underutilization of  manufacturing
capacity  as a result  of sales mix  changes. The increases  in gross profit and
gross margin in the  first quarter of  1996 over the  prior year, including  the
fourth  quarter of  1995, reflected  the increased  emphasis on  sales of higher
margin TMR systems.
 
RESEARCH AND DEVELOPMENT EXPENSES
 
    Research and development expenses increased  modestly from $906,000 in  1993
to  $971,000 in 1994  and $1.0 million in  1995, and were  $517,000 in the first
quarter of  1996 as  compared  to $195,000  in the  first  quarter of  1995  and
$438,000  in the fourth quarter  of 1995. The increase  in these expenses in the
first quarter  of 1996  reflected a  higher level  of research  and  development
expenses  relating  to  TMR,  including  commencement  of  clinical  trials. The
relative flatness in such  expenses from 1994 to  1995 reflected an increase  in
the  level  of  such expenses  in  the latter  portion  of 1995  as  the Company
increased its  focus on  TMR, offset  by reduced  expenditures with  respect  to
non-TMR surgical products. Research and development expenditures were relatively
flat from 1993 to 1994 as a result of the relatively flat revenues year to year.
The  Company believes  that continued investment  in the development  of new and
improved products  and  procedures and  continued  investment in  the  Company's
clinical  trials is  critical to  its future  success. Accordingly,  the Company
believes that research  and development  expenses will continue  to increase  in
future periods.
 
SALES AND MARKETING
 
    Sales  and marketing expenses decreased from $794,000 in 1993 to $392,000 in
1994, and increased to $879,000 in 1995. Such expenses increased to $396,000  in
the  first  quarter of  1996  from $191,000  in the  first  quarter of  1995 and
$328,000 in the fourth  quarter of 1995.  The increase in  the first quarter  of
1996  reflected the  Company's application  of additional  resources to  the TMR
market. The increase  from 1994  to 1995  reflected expansion  of the  Company's
sales  and marketing staff and increased travel and trade show expenses, as well
as expenses  associated  with  the  commencement  of  clinical  trials  for  the
Company's  TMR products in late 1995 and associated recruitment of participating
physicians  and  hospitals.  The  decrease   from  1993  to  1994  was   largely
attributable   to  reduced  sales  and  marketing  activity  and  reduced  sales
commissions as  the Company  switched  its emphasis  from distributor  sales  to
direct  sales.  The  Company  expects that  sales  and  marketing  expenses will
continue to increase significantly as  the Company continues to focus  resources
on the development of its TMR products.
 
GENERAL AND ADMINISTRATIVE
 
    General  and administrative expenses increased from $325,000 in 1993 to $1.0
million in 1994, and decreased to $681,000 in 1995. Such expenses increased from
$199,000 in the first quarter of 1995 and $135,000 in the fourth quarter of 1995
to $211,000 in the first quarter of  1996. The increase in the first quarter  of
1996  as compared to  the first quarter of  1995 and the  fourth quarter of 1995
reflected increased headcount. The lower general and administrative expenses  in
the  fourth quarter of 1995 as compared to the first quarter of the year was due
primarily to  a  write off  of  expenses in  the  first quarter  related  to  an
unsuccessful  financing, while the  higher expenses in 1994  as compared to 1993
and 1995 principally  reflected professional  fees incurred  in connection  with
certain  financing-related initiatives  which were  terminated during  1994. The
Company anticipates  that  general  and  administrative  expenses  may  increase
substantially
 
                                       19
<PAGE>
in  absolute terms, although such expenses may vary as a percentage of revenues,
reflecting the  commitment of  resources  to expand  the Company's  systems  and
infrastructure  as well as compliance and  other costs associated with operating
as a publicly traded corporation.
 
INTEREST EXPENSE, NET
 
    Interest expense, net of interest income,  increased from $3,000 in 1993  to
$435,000  in 1994 and $921,000 in 1995, and  was $50,000 in the first quarter of
1996 compared  to  $221,000  in  the first  quarter  of  1995.  These  increases
reflected  higher levels  of indebtedness and,  in 1994 and  1995 (including the
first quarter of 1995), amortization of a discount on notes payable and a higher
level of indebtedness of the Company. A portion of this indebtedness was reduced
in late 1995 in connection with a  private offering of equity securities by  the
Company.   The  Company  expects  to  repay  the  balance  of  this  outstanding
indebtedness with the proceeds of the Offering. See "Use of Proceeds."
 
LIQUIDITY AND CAPITAL RESOURCES
 
    Since its  inception, the  Company has  satisfied its  capital  requirements
primarily  through  private sales  of  its equity  securities  and, to  a lesser
extent, loans from shareholders. In addition, the Company's operations have been
funded in part through sales of the Company's products prior to its focus on the
TMR market. The Company used $1.1 million and $621,000 for operating  activities
in  1995 and the three  months ended March 31,  1996, respectively. At March 31,
1996, the Company had an accumulated  deficit of $5.9 million. The net  proceeds
from  equity sold through March 31, 1996 was  $6.7 million, and at that date the
Company had  outstanding  an  aggregate  of  $1.7  million  in  indebtedness  to
shareholders  of  which  $1 million  bears  interest  at 6%  per  annum  and the
remainder bears interest at 10% per annum.
 
    The Company had aggregate cash balances  of $1.3 million at March 31,  1996.
After  giving  effect to  the  estimated net  proceeds  of the  Offering  of $58
million, and  the use  of approximately  $2 million  of such  proceeds to  repay
existing  indebtedness, the Company's adjusted cash  balances at such date would
be $58 million. See "Use of Proceeds."
 
    The Company anticipates that the net proceeds of the Offering, together with
sales of  products for  investigational  use, will  be  sufficient to  meet  the
Company's  capital requirements through at least calendar year 1997. The Company
anticipates that, through the end of  1997, approximately $10-15 million of  the
proceeds  of the Offering  will be used for  research and development, including
funding of  clinical  trials; approximately  $10-15  million will  be  used  for
expansion  of sales  and marketing resources;  approximately $3  million will be
used for capital expenditures, including expansion of manufacturing  facilities;
and  approximately $2 million will  be used for repayment  of debt as referenced
above. The balance  of the  proceeds will be  used for  other general  corporate
purposes including working capital. There can be no assurance, however, that the
Company  will not require additional  sources of cash at  an earlier date in the
future, depending  upon the  progress  of expansion  of the  Company's  clinical
trials,  any  need  for  additional  clinical trials  or  other  testing  of the
Company's products, and the timing  of other required expenditures as  indicated
above.  If the Company is required to obtain additional financing in the future,
there can be no assurance that capital will be available on terms acceptable  to
the Company, if at all.
 
                                       20
<PAGE>
                                    BUSINESS
 
    THE  FOLLOWING DISCUSSION CONTAINS  FORWARD-LOOKING STATEMENTS WHICH INVOLVE
RISKS AND UNCERTAINTIES. THE COMPANY'S ACTUAL RESULTS AND THE TIMING OF  CERTAIN
EVENTS  COULD DIFFER MATERIALLY  FROM THOSE ANTICIPATED  BY SUCH FORWARD-LOOKING
STATEMENTS AS  A  RESULT  OF  CERTAIN  FACTORS  DISCUSSED  IN  THIS  PROSPECTUS,
INCLUDING THOSE SET FORTH UNDER "RISK FACTORS."
 
    The  Company  designs,  develops, manufactures  and  distributes laser-based
surgical products and  disposable fiber-optic accessories  for the treatment  of
advanced   cardiovascular  disease   through  transmyocardial  revascularization
("TMR"). TMR is a surgical procedure performed  on the beating heart in which  a
laser device is used to create pathways through the myocardium directly into the
heart  chamber. The pathways are intended to enable improved blood supply to the
myocardium from  the heart  chamber. TMR  potentially offers  end-stage  cardiac
patients   who  are  not  candidates   for  percutaneous  transluminal  coronary
angioplasty ("PTCA" or  "balloon angioplasty") or  coronary artery bypass  graft
surgery  ("CABG"  or "open  heart bypass  surgery") a  means to  alleviate their
anginal symptoms and improve their quality of life. The Company currently offers
its  Eclipse  TMR   2000  laser  system   for  sale  in   limited  numbers   for
investigational  use only  pursuant to  an Investigational  Device Exemption (an
"IDE") from the U.S.  Food and Drug Administration  (the "FDA"). From  September
1995  through April 30, 1996, the Company had installed its TMR laser systems in
20 hospitals in the U.S.  and two hospitals in  Europe. The Company believes  it
has installed TMR laser systems in more hospitals in the U.S. than any other TMR
provider.
 
BACKGROUND
 
    Cardiovascular  disease is the leading cause  of death and disability in the
U.S., according to the American  Heart Association (the "AHA"). Coronary  artery
disease  is the principal form of cardiovascular disease and is characterized by
a progressive narrowing  of the  coronary arteries,  which supply  blood to  the
heart.  This narrowing process is usually due to atherosclerosis, the buildup of
fatty deposits, or plaque, on the inner lining of the arteries. Coronary  artery
disease  reduces the available  supply of oxygenated blood  to the heart muscle,
potentially resulting in  severe chest pain  known as angina  and damage to  the
heart.  Typically,  the condition  worsens over  time and  often leads  to heart
attack or death.
 
    Based on standards promulgated by the Canadian Heart Association, angina  is
typically  classified into four classes, ranging  from Class I, in which anginal
pain results only from strenuous exertion,  to the most severe class, Class  IV,
in  which the patient is unable to  conduct any physical activity without angina
and angina may be  present even at  rest. The AHA estimates  that more than  six
million Americans experience anginal symptoms.
 
    The primary therapeutic options for treatment of coronary artery disease are
drug  therapy, PTCA (including techniques which  augment or replace PTCA such as
stent placement  and atherectomy),  and CABG.  The objective  of each  of  these
approaches is to increase blood flow through the coronary arteries to the heart.
The  AHA  estimates that  the total  number  of cardiovascular  related surgical
procedures performed in the U.S.  each year is approximately 885,000,  including
approximately 485,000 open heart bypass surgeries and approximately 400,000 PTCA
procedures.  According to the American Hospital Association, approximately 1,100
hospitals in the U.S. perform cardiovascular related surgical procedures.
 
    Drug therapy may be effective for mild cases of coronary artery disease  and
angina  either through medical  effects on the arteries  that improve blood flow
without reducing the plaque or by decreasing the rate of formation of additional
plaque  (E.G.,  by  reducing  blood  levels  of  cholesterol).  Because  of  the
progressive nature of the disease, however, many patients with angina ultimately
undergo either PTCA or open heart bypass surgery.
 
    PTCA is a less-invasive alternative to CABG introduced in the early 1980s in
which  a balloon-tipped catheter is inserted  into an artery, typically near the
groin, and guided to the areas of blockage in the coronary arteries. The balloon
is then  inflated and  deflated at  each blockage  site, thereby  rupturing  the
blockage and stretching the vessel. Although the procedure is usually successful
in widening the blocked channel, the artery often renarrows within six months of
the  procedure,  a process  called  "restenosis," often  necessitating  a repeat
procedure. A variety of  techniques for use in  conjunction with PTCA have  been
developed  in an attempt to reduce  the frequency of restenosis, including stent
placement and atherectomy. Stents are small metal frames
 
                                       21
<PAGE>
delivered to  the area  of blockage  using a  balloon catheter  and deployed  or
expanded  within the coronary artery. The  stent is a permanent implant intended
to keep the channel open. Atherectomy is  a means of using mechanical, laser  or
other techniques at the tip of a catheter to cut or grind away plaque.
 
    CABG  is an  open chest  procedure developed in  the 1960s  in which conduit
vessels are taken from elsewhere in the body and grafted to the blocked coronary
arteries so that blood can bypass the blockage. CABG typically requires use of a
heart-lung bypass machine to render the heart inactive (to allow the surgeon  to
operate   on  a  still,  relatively  bloodless  heart)  and  involves  prolonged
hospitalization and  patient  recovery  periods. Accordingly,  it  is  generally
reserved  for patients with severe cases of coronary artery disease or those who
have previously failed to receive adequate relief of their symptoms from PTCA or
related techniques. Unfortunately, most bypass grafts fail within one to fifteen
years following the procedure. Repeating the surgery ("re-do bypass surgery") is
possible, but is made more difficult  because of scar tissue and adhesions  that
typically  form as a result  of the first operation.  The American Heart Journal
estimates that 12% of  the total CABG  procedures in the  U.S. are re-do  bypass
surgeries.  Moreover, for many patients CABG is inadvisable for various reasons,
such as the severity of the patient's overall condition, the extent of  coronary
artery disease or the small size of the blocked arteries.
 
    When  these treatment  options are  exhausted, the  patient is  left with no
viable surgical alternative other than, in limited cases, heart transplantation.
Without a viable  surgical alternative,  the patient is  generally managed  with
drug therapy, often with significant lifestyle limitations. TMR, currently under
clinical  investigation  by  the  Company and  certain  other  companies, offers
potential relief  to  a  large  class of  patients  with  severe  cardiovascular
disease.
 
THE TMR PROCEDURE
 
    TMR, or transmyocardial revascularization, is a surgical procedure performed
on the beating heart, in which a laser device is used to create pathways through
the  myocardium directly  into the heart  chamber. The pathways  are intended to
enable improved perfusion, or supply, of blood to the myocardium from the  heart
chamber.  Current clinical trials are intended to demonstrate improved perfusion
as evidenced by reduced angina in the patient. TMR potentially can be  performed
using  any  of  several  different  surgical  approaches,  including  open chest
surgery, minimally  invasive surgery  through  small openings  in the  chest  or
percutaneous  surgery  involving the  use  of a  laser-tipped  catheter threaded
through a peripheral artery. TMR  potentially offers end-stage cardiac  patients
who  are not candidates for PTCA or CABG a means to alleviate their symptoms and
improve their  quality  of  life.  TMR  may  also  be  effective  when  used  in
conjunction  with (as  opposed to following)  other procedures such  as PTCA and
CABG. The Company has received IDEs to conduct two clinical studies of TMR using
an open chest approach but has not  yet sought IDEs to conduct clinical  studies
using either a minimally invasive approach or a percutaneous approach.
 
    The  physiologic  principles underlying  TMR  as a  potential  treatment for
cardiovascular disease were first identified in the 1930s. It was observed  then
that although the human myocardium depends on external coronary arteries for its
blood  supply, it  displays elements of  certain direct blood  pathways found in
reptilian hearts.  In reptiles,  blood is  supplied directly  to the  myocardium
through these pathways from the chambers of the heart. These observations led to
a  belief that impaired vascularization in the human myocardium could be treated
by creating  direct pathways  through  the myocardium  into the  heart  chamber.
Successes  in other treatment techniques such as PTCA and CABG, however, as well
as limitations in the technologies available  to perform TMR, limited the  focus
on  TMR  until recently.  Following numerous  advancements in  the use  of laser
technology in medical applications, human trials of laser-based TMR commenced in
the 1980s. TMR is now being offered  as an investigational procedure as part  of
clinical studies to determine the procedure's safety and effectiveness.
 
BUSINESS STRATEGY
 
    The Company's objective is to become the leading supplier in the TMR market.
The Company's strategies to achieve this goal are as follows:
 
    DEMONSTRATE  CLINICAL UTILITY OF TMR.  The Company is seeking to demonstrate
the clinical safety  and effectiveness of  TMR and achieve  FDA approval of  the
Company's products through clinical trials. The
 
                                       22
<PAGE>
Company's  initial clinical trial commenced in  November 1995 and is designed to
assess the safety and effectiveness of  the Company's TMR procedure as  compared
with drug therapy. Depending upon the success of this initial trial, the Company
intends to submit a PMA application as early as the latter part of 1997.
 
    DEVELOP  COMPREHENSIVE PRODUCT  LINES FOR  TMR.   The Company  is seeking to
develop multiple surgical platforms  and provide a  comprehensive suite of  high
quality  products  for TMR.  The Company  believes  that its  compact, flexible,
fiber-optic based system will enable it to offer effective TMR solutions  across
the  three principal TMR surgical approaches potentially available for TMR, open
chest surgery, minimally invasive surgery and percutaneous surgery. The  Company
is  also developing a broad range of disposable fiber-optic based surgical tools
designed to operate with the Company's  laser base unit and intended to  provide
physicians   with  a  broad  range  of  options  for  their  individual  tactile
preferences and solutions  for the  different geometry of  each patient's  heart
cavity.
 
    LEVERAGE  PROPRIETARY TECHNOLOGY.  The Company believes that its significant
expertise in  laser  systems  for cardiovascular  disease  and  the  proprietary
technologies   it  has  developed  are  important  factors  in  its  efforts  to
demonstrate the safety and effectiveness of  its TMR procedures. The Company  is
seeking  to  leverage  this expertise  in  developing TMR  systems  designed for
minimally invasive and percutaneous TMR surgical procedures, in addition to  the
open  chest TMR procedure currently being investigated in the Company's clinical
trials.  The  Company  is  also   seeking  to  develop  additional   proprietary
technologies  for TMR  and related procedures.  The Company holds  five U.S. and
related  foreign  patents  relating  to  surgical  treatment  with  lasers   and
fiber-optic  handpieces, and has several patent applications pending relating to
various aspects of TMR. See "-- Intellectual Property Matters."
 
    EXPAND MARKET FOR THE COMPANY'S PRODUCTS.  The Company is seeking to  expand
market  awareness  of  the  Company's  products  among  opinion  leaders  in the
cardiovascular  field,  subject   to  appropriate   regulatory  guidelines.   In
connection with the current clinical trials, the Company has focused its initial
efforts  on the 200  hospitals in the  U.S. that perform  the greatest number of
CABG procedures. The  Company also intends  to develop foreign  markets for  its
products  through  international  distribution relationships.  In  addition, the
Company has assembled a board of  scientific advisors consisting of a number  of
influential cardiac surgeons and cardiologists. The Company has also developed a
comprehensive  training program to assist  physicians in acquiring the expertise
necessary to utilize the Company's TMR products and procedures.
 
    EXPAND INDICATIONS FOR TMR.  The  Company is seeking to expand the  approved
indications  for  TMR  through  additional clinical  studies.  For  example, the
Company has obtained FDA  approval to undertake  Phase I of  a second TMR  study
intended  to assess the safety and effectiveness of the Company's TMR procedures
used in conjunction with CABG as compared with CABG used alone.
 
    RISK FACTORS
 
    The Company's success  will depend  upon successful  completion of  clinical
trials,  which are  currently at an  early stage;  the receipt of  FDA and other
governmental approvals, which may take considerable time, and may not be granted
at all; acceptance of TMR, which is a new surgical procedure, among the  medical
community;  the ability to  protect the Company's  intellectual property rights;
the risks of claims of infringement of third party intellectual property rights;
the ability  of  the  Company to  manage  change  and growth  in  its  business,
particularly  in light  of the Company's  limited history of  TMR operations and
history of operating losses; the ability of  the Company to succeed in light  of
significant competition; and other risks. See "Risk Factors."
 
PRODUCTS AND TECHNOLOGY
 
ECLIPSE TMR 2000 SYSTEM
 
    The Eclipse TMR 2000 system consists of the Eclipse TMR 2000 laser base unit
and  a  line of  fiber-optic,  laser based  surgical  tools. Each  surgical tool
utilizes optical fiber to deliver laser  energy from the source laser base  unit
to  the distal tip of  the surgical handpiece. The  compact base unit occupies a
small amount  of operating  room floor  space,  operates on  a standard  208  or
220-volt power supply, features a self-contained cooling system which eliminates
the  need for  electrical or  plumbing modifications  to the  hospital operating
 
                                       23
<PAGE>
room or catheterization laboratory where it  is typically used on patients,  and
is  light enough to move  within the operating room  or among operating rooms in
order  to  use  operating  room  space  efficiently.  Moreover,  the   flexible,
lightweight  and slender optical fiber  used to deliver the  laser energy to the
patient enables ready access to the patient and to various sites within the open
chest.
 
    The Eclipse TMR 2000 system and related surgical procedures are designed  to
be  used without the  requirement of the external  systems utilized with certain
competitive TMR systems.  For example,  the Eclipse  TMR 2000  does not  require
electrocardiogram  synchronization, which monitors the  electrical output of the
heart and times the use  of the laser to  minimize electrical disruption of  the
heart,  or transesophageal echocardiography, which tests each application of the
laser to the myocardium during the TMR procedure to determine if the pathway has
penetrated through  the  myocardium into  the  heart chamber.  These  additional
systems  often require  the presence of  an additional  physician. The Company's
products are also  designed to minimize  bleeding in the  external layer of  the
myocardium.
 
    ECLIPSE HOLMIUM LASER.  The Eclipse TMR 2000 laser base unit generates laser
light  of a  2-micron wavelength  by photoelectric  excitation of  a solid state
holmium crystal. The holmium laser, because it uses a solid state crystal as its
source, is compact, reliable and requires low maintenance. The Company has  been
using holmium lasers since the Company's inception.
 
    DISPOSABLE  SURGICAL TOOLS.  The Company  offers to physicians a broad range
of surgical tool options for their individual tactile preferences and  solutions
for  the different geometry  of each patient's heart  cavity. These products are
designed to give the  surgeon control of the  procedure, access to difficult  to
reach  areas of the  heart and clear  visualization of the  surgical field. Each
such tool is designed for disposal after use in a single surgical procedure. The
products include the following devices:
 
        CRYSTALPOINT.  The CrystalPoint fiber-optic handpiece system utilizes  a
    single, one millimeter diameter optical fiber to deliver the energy from the
    Eclipse  TMR 2000 laser base unit to  the targeted surgical sites within the
    body. The  single strand  design provides  maximum tactile  feedback to  the
    surgeon,  as  he or  she  monitors the  penetration  of the  laser  into the
    myocardium. The fiber-optic design provides flexibility and  maneuverability
    for the surgeon, particularly as compared to the articulated mechanical arms
    required in connection with CO(2) laser-based devices.
 
        CRYSTALFLEX  AND J-GRIP.  The  CrystalFlex handpiece system is comprised
    of multiple, fine fiber-optic strands  in a one millimeter diameter  bundle.
    The  CrystalFlex  fiber delivers  the  same amount  of  laser energy  as the
    CrystalPoint, but the fiber bundle makes the CrystalFlex more flexible  than
    the  CrystalPoint with  its single  solid core.  The CrystalFlex  is used in
    conjunction with the  J-Grip handpiece to  provide access to  hard to  reach
    sites  within  the heart  cavity.  The J-Grip  handpiece,  which is  made of
    malleable stainless steel alloy,  has a curved end  which can be  repeatedly
    adjusted while in use to reach different areas.
 
    The CrystalPoint and CrystalFlex fiber-optic handpieces each have an easy to
install  connector which  screws into  the laser base  unit, and  each device is
pre-calibrated in  the  factory so  it  requires no  special  preparation.  Some
surgeons  elect  to use  more  than one  product for  a  single patient  such as
combining  the  CrystalFlex  and  J-Grip  for  hard  to  reach  sites  and   the
CrystalPoint for easier to access areas.
 
REGULATORY STATUS
 
    The  Company  is currently  involved  in the  second  and final  phase  of a
clinical study designed to assess the safety and effectiveness of TMR  performed
in an open chest procedure for the treatment of patients with Class IV angina as
compared  with drug  therapy. The Company  originally received  FDA clearance to
commence this clinical  study in September  1995, and undertook  Phase I of  the
study  shortly  thereafter in  November 1995.  Phase I  was intended  to provide
indications of safety  prior to  undertaking expanded clinical  trials, and  was
completed  in  January 1996.  In February  1996,  the FDA  reviewed the  Phase I
results and authorized commencement of Phase II.
 
    Phase II of the study  will involve a minimum  of 126 patient trials,  which
are  currently expected to be completed by the latter half of 1996, depending on
the rate at which the Company is able to establish
 
                                       24
<PAGE>
additional TMR sites and enroll patients in the study. Phase II commenced  March
18,  1996 and through March 31, 1996 a total of 10 trials had been performed. In
addition, the Company  intends to perform  patient follow-up reviews  for up  to
twelve  months prior to submission  of a PMA application.  The limited number of
trials to date do not represent a sufficiently large sample for results to  date
to be of statistical significance.
 
    In February 1996, the Company obtained FDA clearance to undertake Phase I of
another clinical study of TMR intended to assess the safety and effectiveness of
TMR  used in  conjunction with  CABG as  compared with  CABG alone.  The Company
intends to begin these trials in the second quarter of 1996.
 
    There can be no assurance that the results of the Company's studies will  be
sufficient  to  obtain  the  PMA required  to  commercialize  its  TMR products.
Additionally, there can be no assurance that the Company will not be required to
conduct additional trials which may result in substantial costs and delays.  See
"-- Government Regulation."
 
SALES AND MARKETING
 
    The  Company  is  currently  restricted  to  selling  its  TMR  products for
investigational use only. To the extent  permitted under FDA rules, the  Company
is  seeking to promote market awareness  of the Company's products among opinion
leaders in the cardiovascular field and  to recruit physicians and hospitals  to
participate  in the Company's clinical trials. Although approximately 1,100 U.S.
hospitals  perform  CABG  procedures,  the  Company  has  focused  its   initial
recruitment  efforts, in connection with the current clinical trials, on the 200
hospitals in the U.S.  that perform the greatest  number of CABG procedures.  To
address  this market  area the Company  maintains a domestic  direct sales force
consisting of five regional sales  managers and utilizes a regional  distributor
of cardiovascular surgical products to manage sales in the sixth designated U.S.
sales  region. In  the event the  Company receives  a PMA for  the Company's TMR
products, the Company intends to expand its direct sales and support personnel.
 
    The Company currently offers a laser base  unit, at a current end user  list
price of $295,000 per unit, and disposable surgical tools (at least one of which
must  be used with each TMR  procedure) at an end user  unit price of $1,895. In
order to assist hospitals in making the substantial investment in the  Company's
laser  system, the  Company intends  either to sell  the system  to the hospital
outright or  to  place  the  system  with the  hospital,  for  a  placement  fee
(currently $25,000) plus an additional fee for each procedure performed.
 
    The  Company intends to broaden  its line of disposable  products as part of
its strategy to  develop multiple  platforms for TMR.  In addition  to the  open
chest  TMR  procedure  currently  under investigation,  the  Company  intends to
develop TMR systems designed for minimally invasive TMR surgical procedures  and
percutaneous  TMR procedures, each of which are  made possible by the use of the
Company's flexible, lightweight  and slender fiber-optic  based surgical  tools.
Open  chest TMR procedures and minimally  invasive TMR surgical procedures would
typically be performed by  cardiac surgeons. In  contrast, the Company  believes
that   percutaneous  TMR  could   be  a  viable   procedure  for  interventional
cardiologists for use in conjunction with other percutaneous procedures such  as
PTCA.
 
    In  Europe,  the Company  has sold  a  TMR system  to Sorin  Biomedical Inc.
("Sorin"),  a  leading  supplier  of  cardiovascular  surgery  products  and   a
subsidiary  of Fiat S.p.A.,  for use by  Sorin in conducting  clinical trials in
Europe. The Company is  currently in discussions with  Sorin and other firms  to
establish   distribution  relationships   (subject  to   appropriate  regulatory
approvals).  There  can  be  no  assurance  that  any  such  agreement  will  be
consummated.
 
    From September 1995 through April 30, 1996, the Company installed systems in
20  hospitals in the U.S.  and two hospitals in  Europe. The Company believes it
has installed TMR laser systems in more hospitals in
the U.S. than any other TMR provider.
 
    The Company has developed,  in conjunction with one  of the major  hospitals
using  the Company's  TMR products, a  training program to  assist physicians in
acquiring the  expertise necessary  to utilize  the Company's  TMR products  and
procedures.  This  program  includes a  comprehensive  two-day  course including
observation of live TMR procedures,  didactic training and hands-on  performance
of TMR in vivo.
 
                                       25
<PAGE>
    The  Company  exhibits its  products  at major  cardiovascular  meetings and
recruits new investigators to buy the Company's products for investigational use
in  their  hospitals.  Investigators  of   the  Company's  products  have   made
presentations  at meetings around the  world, describing their results. Articles
will be submitted to peer-reviewed publications and industry journals to present
the results of  the ongoing clinical  trials. The Company  is also developing  a
comprehensive  patient recruitment program  for use by  hospitals and physicians
conducting the Company's investigational trials to promote awareness of TMR  and
to educate prospective clinical trial patients regarding TMR.
 
SCIENTIFIC ADVISORY BOARD
 
    The Company has recently formed a Scientific Advisory Board to meet with the
Company  on  an individual  and group  basis  and to  discuss the  Company's TMR
products and procedures, relevant developments  in cardiology and the  treatment
of  heart disease, and strategic directions. In addition, the Company has worked
with the  medical  staffs  of  several  major  universities  in  developing  the
protocols  for the Company's TMR procedures  and in clinical data monitoring and
statistical analysis.
 
    The Scientific Advisory Board consists of  a number of prominent members  of
the medical and scientific communities, including the following persons:
 
<TABLE>
<CAPTION>
NAME                                    OCCUPATION/TITLE
- - --------------------------------------  ----------------------------------------
<S>                                     <C>
Eric Powers, M.D.                       Professor of Medicine and Director
                                        Cardiac Cath Laboratory
                                        University of Virginia
 
Norman Shumway, M.D.                    Professor Emeritus
                                        Cardiothoracic Surgery
                                        Stanford University Medical Center
 
Vaughn Starnes, M.D.                    Professor of Surgery and Chief
                                        Cardiothoracic Surgery
                                        University of Southern California School
                                        of Medicine
 
Eric Topol, M.D.                        Chairman
                                        Department of Cardiology
                                        Cleveland Clinic Foundation
</TABLE>
 
    In  addition, the Company meets several times each year, during professional
conferences  and  exhibitions,  with  the  group  of  physicians  who  serve  as
investigators  in connection  with the  Company's clinical  trials, in  order to
discuss clinical procedures and results.
 
RESEARCH AND DEVELOPMENT
 
    The Company's ongoing research and  product development efforts are  focused
on  the development of  new and enhanced lasers,  fiber-optic handpieces and TMR
applications. The Company intends to continue  to acquire and adapt for  medical
use  the most  promising new laser  technologies and products.  In addition, the
Company continues  to develop  new  laser handpieces  in  order to  enhance  the
utility  and quality of the  Company's line of disposable  surgical tools and to
expand the indications for use and  variety of procedures that can be  performed
with  the  Company's surgical  tools. Specifically,  the  Company is  seeking to
achieve continual improvements in its TMR procedure, including greater  surgical
access  and  visualization  of  the surgical  field;  greater  precision  in the
placement of pathways; reduced epicardial bleeding and bruising of heart muscle;
greater margins  of safety  with  respect to  underlying heart  structures;  and
reduced likelihood of induction of arrhythmia.
 
    In  furtherance of  the Company's  strategy to  develop the  three principal
surgical platforms  for performance  of TMR,  current research  efforts  include
enhancements  to open chest surgical TMR as well as complementary techniques for
minimally invasive surgical TMR  and percutaneous TMR. In  all these cases,  the
Company  anticipates new disposable products will  be required to satisfy market
requirements. Minimally invasive  surgical TMR  and percutaneous  TMR will  each
require   FDA  approval  to   commence  clinical  trials.   See  "--  Government
Regulation."
 
                                       26
<PAGE>
    The Company's  research  and development  spending,  including  expenditures
related to clinical trials, was $906,000, $971,000 and $1 million, respectively,
in  1993, 1994  and 1995,  and was $517,000  in the  first quarter  of 1996. The
Company  expects   that  research   and  development   expenses  will   increase
substantially  in  connection with  the  Company's clinical  trials  and ongoing
development efforts.
 
    All medical products  of the  types produced by  the Company  require a  PMA
prior  to commercial marketing  in the U.S.  There can be  no assurance that the
Company will obtain a PMA from the FDA for the Company's TMR products.
 
    The Company has  also done research  and received FDA  clearances for  laser
surgery  products  other  than its  TMR  systems.  The Company  is  not actively
distributing such products at this time.
 
MANUFACTURING AND QUALITY ASSURANCE
 
    The  Company  manufactures  and   assembles  its  products  from   purchased
components  and subassemblies, primarily at the Company's facility in Sunnyvale,
California.
 
    Each laser  is  mobile  and  shock  resistant,  complies  with  Underwriters
Laboratory  ("UL") standards  and is  equipped with  safety interlocks  and user
friendly controls and  meters. Company  production personnel  assemble and  test
each  laser system  in a  process designed  to test  the integrity  of the laser
system and  to  provide for  accurate  calibration of  system  components.  Upon
completion of these tests, the laser is packaged for shipment. Company personnel
uncrate  and install the laser at the hospital, and verify that the system meets
acceptance criteria, including all laser power output specifications.
 
    Laser handpieces are fabricated from tubing, connectors and optical  fibers,
each  of which is purchased from  outside vendors. The individual optical fibers
are cut to the appropriate length, bundled and placed in the extruded tubing and
metal connectors, and the  tip of the  device is molded  and polished. Prior  to
packaging, each handpiece is tested on a laser system to verify acceptable power
output.
 
    The  Company's assembly and manufacturing  activities to date have consisted
primarily of producing  limited quantities  of its laser  units and  fiber-optic
accessories   for  sale   to  clinical   investigators.  The   Company's  future
profitability will  depend, in  part, on  its ability  to achieve  manufacturing
efficiencies as production volumes increase.
 
    The  core components of the Company's laser units and fiber-optic handpieces
are generally acquired  from multiple sources.  The Company currently  purchases
certain  laser and fiber-optic components and subassemblies from single sources.
Although the Company  has identified alternative  vendors, the qualification  of
additional  or  replacement  vendors for  certain  components or  services  is a
lengthy process.  Any  significant supply  interruption  would have  a  material
adverse  effect  on  the  Company's ability  to  manufacture  its  products and,
therefore,  would  materially  and  adversely  affect  the  Company's  business,
financial  condition and results of operations.  The Company intends to continue
to qualify multiple sources for components that are presently single sourced and
also to  build an  inventory of  these  items for  use in  the event  of  supply
interruptions.
 
    The   Company  is  committed  to   continuous  quality  improvement  in  its
manufacturing  and  assembly  operations.   Each  subassembly  and  product   is
thoroughly  tested at multiple  stages of production  to ensure proper operation
and compliance with  applicable regulatory standards.  Manufacturing quality  is
documented  and monitored continually,  and the Company  is currently seeking to
obtain ISO 9000 certification of the quality of its manufacturing processes.
 
    The Company is  required to register  as a manufacturer  of medical  devices
with  the FDA  and state  agencies such as  the California  Department of Health
Services. As  a  condition  to  receipt of  a  PMA,  the  Company's  facilities,
procedures  and practices  will be subject  to pre-approval  GMP inspections and
thereafter to ongoing, periodic inspections by the FDA and such other regulatory
agencies.
 
    The Company is also subject to certain Federal, state and local  regulations
regarding  environmental  protection  and  hazardous  substance  controls, among
others. Although  the Company  believes it  currently complies  in all  material
respects  with such regulations, failure to  comply could subject the Company to
fines or other enforcement actions.
 
                                       27
<PAGE>
    The Company  provides  to its  customers  in the  U.S.  and to  its  foreign
distributors a free one-year parts and service warranty for each laser unit. The
Company  offers extended warranty coverage for  one-year periods to customers in
the U.S. The Company also  performs service on a fee  basis on laser units  that
are no longer covered by warranty. Annual service contracts are generally priced
at  10% of  the purchase price  of the  laser unit. Handpieces  are sold without
warranty.
 
COMPETITION
 
    The Company expects that the market for TMR, which is currently in the early
stages of development,  will be intensely  competitive. Competitors include  PLC
Systems,  Inc. ("PLC") and CardioGenesis  Corporation ("CardioGenesis"), both of
which are currently selling TMR products for investigational use in the U.S. and
abroad. Other competitors may also  enter the market, including large  companies
in  the laser and cardiac  surgery markets. Many of  these companies have or may
have significantly greater financial, development, marketing and other resources
than the Company.
 
    PLC is  a  publicly traded  corporation  which uses  a  CO(2) laser  and  an
articulated mechanical arm in its TMR products. PLC obtained an IDE to undertake
clinical  trials in January 1990. PLC has conducted extensive trials but has not
yet received a  PMA. PLC  has received  the CE Mark  which allows  sales of  its
products  commercially  in all  European Union  countries.  PLC has  been issued
patents for its apparatus and methods for TMR.
 
    CardioGenesis is a  privately held company  which uses a  holmium laser  and
fiber  optics in its TMR products. CardioGenesis has been issued patents for its
methods of TMR, is actively promoting  its products in Europe, and has  obtained
an IDE to begin clinical trials in the U.S.
 
    The  Company  believes that  the factors  which will  be critical  to market
success include  the  timing  of  receipt  of  requisite  regulatory  approvals,
effectiveness and ease of use of the TMR products and procedures on both a stand
alone  basis and  in conjunction  with other procedures  such as  CABG and PTCA,
breadth  of  product  line,  system  reliability,  brand  name  recognition  and
effectiveness  of  distribution  channels  and  cost  of  capital  equipment and
disposable devices.
 
    TMR also competes  with other  methods for the  treatment of  cardiovascular
disease,  including drug therapy, PTCA and CABG. Although the Company is seeking
to demonstrate the safety and effectiveness  of the Company's TMR procedures  in
patients  for whom  other cardiovascular  treatments are  not likely  to provide
relief, and in the future intends to pursue the safety and effectiveness of  TMR
when  used in conjunction with other treatments,  there can be no assurance that
the Company's TMR products will be accepted. Moreover, technological advances in
other therapies for  cardiovascular disease  such as  pharmaceuticals or  future
innovations  in cardiac surgery techniques could  make such other therapies more
effective or lower in cost than the Company's TMR procedure and could render the
Company's technology obsolete. There  can be no  assurance that physicians  will
use the Company's TMR procedure to replace or supplement established treatments,
or  that the Company's TMR procedure will  be competitive with current or future
technologies.  Such  competition  could  materially  and  adversely  affect  the
Company's business, financial condition and results of operations.
 
    Any  product developed  by the Company  that gains  regulatory approval will
face competition for market acceptance and market share. An important factor  in
such  competition  may  be  the timing  of  market  introduction  of competitive
products. Accordingly,  the  relative pace  at  which the  Company  can  develop
products,  complete  clinical testing  and  regulatory approval  processes, gain
reimbursement acceptance and supply commercial quantities of the product to  the
market  are  expected  to  be  important competitive  factors.  In  the  event a
competitor is able to obtain  a PMA for its products  prior to the Company,  the
Company's  ability  to compete  successfully could  be materially  and adversely
affected. There can be  no assurance that  the Company will  be able to  compete
successfully  against current  and future  competitors. Failure  to do  so would
materially and adversely affect the Company's business, financial condition  and
results of operations.
 
                                       28
<PAGE>
GOVERNMENT REGULATION
 
    Laser-based surgical products and disposable fiber-optic accessories for the
treatment  of advanced cardiovascular disease through TMR are considered medical
devices, and as  such are  subject to  regulation in the  U.S. by  the FDA.  The
Company  has FDA clearance for the sale of the Eclipse laser system for thoracic
surgery. However, the Company has voluntarily  submitted the device to the  more
rigorous  PMA process with  the objective of gaining  approval for more specific
labeling for the treatment of advanced cardiovascular disease.
 
    To obtain  a  PMA  for  a  medical device,  the  Company  must  file  a  PMA
application  that includes  clinical data  and the  results of  pre-clinical and
other testing sufficient to show that there is a reasonable assurance of  safety
and  effectiveness of  the product  for its  intended use.  To begin  a clinical
study, an IDE must  be obtained and  the study must  be conducted in  accordance
with  FDA regulations.  An IDE  application must  contain preclinical  test data
demonstrating  the  safety  of  the  product  for  human  investigational   use,
information  on manufacturing  processes and  procedures, and  proposed clinical
protocols. If the IDE application is  cleared by the FDA, human clinical  trials
may  begin.  The  results  obtained  from  these  trials,  if  satisfactory, are
accumulated and submitted to the FDA in support of a PMA application.  Premarket
approval  from the  FDA is  required before  commercial distribution  of devices
similar to those under development  by the Company is  permitted in the U.S.  In
addition  to the  results of clinical  trials, the PMA  application must include
other information relevant  to the  safety and  effectiveness of  the device,  a
description  of the  facilities and  controls used  in the  manufacturing of the
device, and proposed  labeling. By law,  the FDA has  180 days to  review a  PMA
application. While the FDA has responded to PMA applications within the allotted
time  frame, reviews more often occur over a significantly longer period and may
include requests for extensive additional trials. There can be no assurance that
the Company will not be required  to conduct additional trials which may  result
in  substantial costs and delays, nor can there be any assurance that a PMA will
be obtained in  a timely manner,  if at  all. In addition,  changes in  existing
regulations  or adoptions of new regulations  or policies could prevent or delay
regulatory approval of  the Company's products.  Furthermore, even if  a PMA  is
granted,  subsequent modifications of the  approved device for the manufacturing
process may require  a supplemental PMA  or the  submission of a  new PMA  which
could  require substantial  additional clinicial  efficacy data  and FDA review.
After the FDA accepts a PMA application for filing, and after FDA review of  the
application, a public meeting is frequently held before an FDA advisory panel in
which  the PMA is reviewed  and discussed. The panel  then issues a favorable or
unfavorable recommendation to  the FDA or  recommends approval with  conditions.
Although  the FDA is not bound by  the panel's recommendations, it tends to give
such recommendations significant weight.
 
    Products manufactured or distributed by the  Company pursuant to a PMA  will
be  subject to pervasive and continuing  regulation by the FDA, including, among
other things, postmarket surveillance and adverse event reporting  requirements.
Failure  to comply with applicable regulatory  requirements can result in, among
other things,  warning  letters,  fines, suspensions  or  delays  of  approvals,
seizures   or   recalls  of   products,   operating  restrictions   or  criminal
prosecutions. The FDC Act also requires the Company to manufacture its  products
in  registered establishments and in accordance with GMP regulations and to list
its devices with the FDA. Furthermore, as  a condition to receipt of a PMA,  the
Company's  facilities, procedures  and practices  will be  subject to additional
pre-approval GMP inspections and thereafter to ongoing, periodic GMP inspections
by the FDA. These  GMP regulations impose  certain procedural and  documentation
requirements  upon  the  Company  with  respect  to  manufacturing  and  quality
assurance activities. The  FDA has  proposed amendments to  the GMP  regulations
that will likely increase the cost of compliance with GMP requirements. Labeling
and  promotional  activities are  subject to  scrutiny by  the FDA.  Current FDA
enforcement policy  prohibits  the marketing  of  approved medical  devices  for
unapproved  uses. Changes in existing regulatory requirements or adoption of new
requirements could  materially  and  adversely affect  the  Company's  business,
financial  condition and results  of operations. There can  be no assurance that
the Company will not be required to incur significant costs to comply with  laws
and  regulations in the future or that  laws and regulations will not materially
and adversely affect the Company's  business, financial condition and result  of
operations.
 
                                       29
<PAGE>
    The  Company is also  regulated by the  FDA under the  Radiation Control for
Health and Safety Act, which requires laser products to comply with  performance
standards,  including design  and operation  requirements, and  manufacturers to
certify in product labeling and in reports to the FDA that their products comply
with all such standards. The law  also requires laser manufacturers to file  new
product  and annual reports, maintain  manufacturing, testing and sales records,
and report product defects. Various warning  labels must be affixed and  certain
protective  devices  installed,  depending  on  the  class  of  the  product. In
addition, the  Company  is  subject  to  California  regulations  governing  the
manufacture  of medical devices, including  an annual licensing requirement. The
Company's facilities are subject to ongoing,  period inspections by the FDA  and
California regulatory authorities.
 
    Sales,  manufacture and further development of the Company's TMR system also
may be subject to additional  federal regulations pertaining to export  controls
and  environmental and worker protection, as well  as to state and local health,
safety and  other regulations  that  by locality,  which may  require  obtaining
additional permits. The impact of such regulations cannot be predicted.
 
    Sales  of  medical  devices  outside  of the  U.S.  are  subject  to foreign
regulatory requirements that vary widely by country. The time required to obtain
approval for  sale in  foreign countries  may  be longer  or shorter  than  that
required  for FDA approval, and the  requirements may differ. In addition, there
may be foreign regulatory barriers other  than pre-market approval, and the  FDA
must  approve the export of devices to  certain countries. To continue to market
in Europe, the Company  must obtain the certifications  necessary to enable  the
Company  to affix to its  products the CE Mark  by June 1998. The  CE Mark is an
international symbol of adherence to quality assurance standards and  compliance
with  applicable European  medical device  directives. In  order to  obtain a CE
Mark, the Company must be in compliance with appropriate ISO 9000 standards  and
obtain  certification of its quality assurance  systems by a recognized European
Union notified body. The CE Mark will generally allow the Company to market  the
products  throughout Europe. However, certain individual countries within Europe
require further  approval  by their  national  regulatory agencies.  Failure  to
receive  the  right to  affix  the CE  Mark  or other  requisite  approvals will
prohibit the Company from  selling its TMR products  in member countries of  the
European Union or elsewhere, and there can be no assurance that the Company will
be successful in meeting the European certification requirements.
 
INTELLECTUAL PROPERTY MATTERS
 
    The  Company's success will depend, in part, on its ability to obtain patent
protection for its  products, preserve  its trade secrets,  and operate  without
infringing  the proprietary rights of others. The Company's policy is to seek to
protect its  proprietary  position by,  among  other methods,  filing  U.S.  and
foreign   patent  applications   related  to  its   technology,  inventions  and
improvements that are important to the development of its business. The  Company
holds  five  U.S.  patents  and related  foreign  patents  relating  to surgical
treatment with lasers and fiber-optic handpieces,  and has applied for or is  in
the process of applying for additional patents relating to its laser technology,
TMR  applications  and  fiber-optic  handpieces.  While  the  Company's existing
patents are not  being utilized  with the  Company's current  TMR protocol,  the
Company  believes  such  patents may  be  applicable to  minimally  invasive and
percutaneous approaches. There  can be no  assurance that any  of the  Company's
patents   or  patent  applications  will   not  be  challenged,  invalidated  or
circumvented in the future or that the rights granted thereunder will provide  a
competitive  advantage. The Company intends to vigorously protect and defend its
intellectual property. It is uncertain  whether patent protection will  continue
to  be available for  surgical methods in the  future. Costly and time-consuming
litigation brought by the Company may be necessary to enforce patents issued  to
the  Company, to protect trade  secrets or know-how owned  by the Company, or to
determine the enforceability, scope  and validity of  the proprietary rights  of
others.
 
    The   Company  also  relies  upon  trade  secrets,  technical  know-how  and
continuing technological  innovation to  develop  and maintain  its  competitive
position. The Company typically requires its employees, consultants and advisors
to execute confidentiality and assignment of inventions agreements in connection
with  their employment, consulting, or  advisory relationships with the Company.
There can be no assurance, however,  that these agreements will not be  breached
or that the Company will have adequate remedies for
 
                                       30
<PAGE>
any  breach. Furthermore,  no assurance can  be given that  competitors will not
independently  develop  substantially  equivalent  proprietary  information  and
techniques  or otherwise gain access to the Company's proprietary technology, or
that the Company can meaningfully  protect its rights in unpatented  proprietary
technology.
 
    The  medical  device  industry in  general,  and the  industry  segment that
includes products for  the treatment  of cardiovascular  disease in  particular,
have  been  characterized by  substantial  competition and  litigation regarding
patent and other intellectual  property rights. In  this regard, competitors  of
the  Company have been issued  a number of patents  related to TMR. In September
1995 the Company received from a  competitor a notice of potential  infringement
of  the competitor's patent regarding a method for TMR utilizing synchronization
of laser  pulses to  the beating  of the  heart. In  January 1996,  the  Company
received  from a  second competitor  a notice  of potential  infringement of the
competitor's patent regarding a  method to perform TMR  using fiber optics.  The
Company  has  concluded  in  each case,  following  discussion  with  its patent
counsel, that it  does not  utilize the process  and/or apparatus  which is  the
subject  of the patent at issue, and  has responded to the respective competitor
to such effect.  The Company has  received no further  correspondence on  either
matter.  There can be no assurance,  however, that further claims or proceedings
will not be initiated by either competitor, or that claims by other parties will
not arise in the future. Any such  claims in the future, with or without  merit,
could  be  time-consuming  and expensive  to  respond  to and  could  divert the
attention of the Company's technical  and management personnel. The Company  may
be  involved  in litigation  to  defend against  claims  of infringement  by the
Company, to enforce patents issued to  the Company, or to protect trade  secrets
of  the Company.  If any relevant  claims of  third party patents  are upheld as
valid and  enforceable  in  any litigation  or  administrative  proceeding,  the
Company  could be prevented  from practicing the subject  matter claimed in such
patents, or would be required to obtain licenses from the patent owners of  each
such patent or to redesign its products or processes to avoid infringement.
 
    Patent  applications in  the United States  are maintained  in secrecy until
patents issue, and patent  applications in foreign  countries are maintained  in
secrecy  for a period after filing. Publication of discoveries in the scientific
or patent literature tends  to lag behind actual  discoveries and the filing  of
related patent applications. Accordingly, there can be no assurance that current
and  potential competitors  and other  third parties  have not  filed or  in the
future will not file  applications for, or  have not received  or in the  future
will  not receive,  patents or  obtain additional  proprietary rights  that will
prevent, limit or interfere with the Company's ability to make, use or sell  its
products  either  in the  United  States or  internationally.  In the  event the
Company were to require licenses to  patents issued to third parties, there  can
be no assurance that such licenses would be available or, if available, would be
available  on terms  acceptable to  the Company,  or that  the Company  would be
successful in  any  attempt to  redesign  its  products or  processes  to  avoid
infringement.   Accordingly,  an   adverse  determination   in  a   judicial  or
administrative proceeding or failure to obtain necessary licenses could  prevent
the  Company from manufacturing and selling its products, which would materially
and adversely affect the Company's business, financial condition and results  of
operations.
 
    Unrelated  to  the  products used  in  its  TMR procedure,  the  Company has
received notices  from three  holders  of patents  requesting that  the  Company
become  a licensee. Although the Company  believes that either these patents are
subject to challenge  as being  invalid or are  not infringed  by the  Company's
products,  there can be no assurance that  the Company would prevail in any such
action. In one case, the Company has  taken a non-exclusive license to a  patent
involving  arthroscopy use. In  a second case, the  Company buys components only
from licensees of  the patent holder,  which the Company  believes obviates  the
need  for a separate  license. In addition,  the Company has  received notice of
interference of one of  its patents involving products  that the Company is  not
actively  pursuing.  The Company  has received  a  non-exclusive license  to the
technology. Should the Company determine that it is necessary for it to obtain a
license to any patents or intellectual property, there can be no assurance  that
any  such license would be available on acceptable  terms or at all, or that the
Company would be  able to  develop or otherwise  obtain alternative  technology.
Failure  of the Company  to obtain necessary licenses  could prevent the Company
from  manufacturing  and  selling  its  products,  which  would  materially  and
adversely  affect  the Company's  business, financial  condition and  results of
operations.
 
                                       31
<PAGE>
THIRD PARTY REIMBURSEMENT
 
    The Company expects that sales volumes and prices of the Company's  products
will  depend  significantly on  the availability  of reimbursement  for surgical
procedures using  the  Company's  products  from  third  party  payors  such  as
governmental programs, private insurance and private health plans. Reimbursement
is  a  significant  factor considered  by  hospitals in  determining  whether to
acquire  new  equipment.  Reimbursement  rates  from  third  party  payors  vary
depending  on the third party payor,  the procedure performed and other factors.
Moreover, third party payors,  including government programs, private  insurance
and  private health plans, have in recent years been instituting increasing cost
containment measures designed to limit payments made to healthcare providers by,
among other measures, reducing  reimbursement rates, limiting services  covered,
negotiating  prospective or discounted contract  pricing and carefully reviewing
and increasingly  challenging  the  prices  charged  for  medical  products  and
services.
 
    Medicare reimburses hospitals on a prospectively determined fixed amount for
the  costs associated with an in-patient  hospitalization based on the patient's
discharge diagnosis,  and reimburses  physicians on  a prospectively  determined
fixed  amount based on  the procedure performed, regardless  of the actual costs
incurred by the hospital  or physician in furnishing  the care and unrelated  to
the  specific devices  used in  that procedure.  Medicare and  other third party
payors are increasingly scrutinizing whether to cover new products and the level
of reimbursement for covered products.  In addition, Medicare traditionally  has
considered  items or services  involving devices that have  not been approved or
cleared for marketing by the FDA to be precluded from Medicare coverage. Under a
new Health Care Financing Administration  ("HCFA") policy effective November  1,
1995,  Medicare coverage  will not be  precluded for items  and related services
involving   devices    that   have    been   classified    by   the    FDA    as
"non-experimental/investigational" ("Category B") devices and that are furnished
in  accordance with FDA-approved protocols  governing clinical trials. Even with
items or services involving Category  B devices, however, Medicare coverage  may
be  denied  if other  coverage  requirements are  not  met, for  example  if the
treatment is not medically  needed for the specific  patient. In November  1995,
the  Company received  Category B  designation from  the HCFA.  There can  be no
assurance, however,  that this  coverage  will continue  or that  Medicare  will
reimburse adequately the costs of the Company's TMR procedures when and if a PMA
is granted.
 
    The  Company believes that reimbursement for the Company's TMR procedures to
date has been sought  primarily through Medicare.  Accordingly, the Company  has
limited  experience to  date with  the acceptability  of its  TMR procedures for
reimbursement by private  insurance and private  health plans. There  can be  no
assurance   that  private  insurance  and  private  health  plans  will  approve
reimbursement for TMR.
 
    In foreign markets,  reimbursement is  obtained from a  variety of  sources,
including  governmental authorities,  private health  insurance plans  and labor
unions. In most foreign countries, there are also private insurance systems that
may offer payments for  alternative therapies. Although not  as prevalent as  in
the  U.S.,  health maintenance  organizations are  emerging in  certain European
countries. The Company may need  to seek international reimbursement  approvals,
and  there can  be no assurance  that any such  approvals will be  obtained in a
timely manner, if  at all.  Failure to receive  foreign reimbursement  approvals
could  have an adverse effect on market  acceptance of the Company's products in
the foreign markets in which such approvals are sought.
 
    The Company believes  that reimbursement in  the future will  be subject  to
increased  restrictions such as those  described above, both in  the U.S. and in
foreign markets.  The  Company believes  that  the escalating  cost  of  medical
products  and  services  has led  to  and  will continue  to  lead  to increased
pressures on the health care industry, both foreign and domestic, to reduce  the
cost  of products and services, including products offered by the Company. There
can be  no  assurance  that  third party  reimbursement  and  coverage  will  be
available  or  adequate  in U.S.  or  foreign  markets, that  current  levels of
reimbursement will not be decreased in  the future, or that future  legislation,
regulation,  or reimbursement policies of third  party payors will not otherwise
adversely affect the demand  for the Company's products  or its ability to  sell
its  products  on  a profitable  basis.  Fundamental reforms  in  the healthcare
industry in the  U.S. and  Europe that could  affect the  availability of  third
party  reimbursement continue to be proposed, and the Company cannot predict the
 
                                       32
<PAGE>
timing or  effect  of  any such  proposal.  If  third party  payor  coverage  or
reimbursement  is unavailable  or inadequate, the  Company's business, financial
condition and results of operations could be materially and adversely affected.
 
PRODUCT LIABILITY AND INSURANCE
 
    The Company  maintains insurance  against product  liability claims  in  the
amount of $1 million per occurrence and $1 million in the aggregate, and expects
to  seek to increase such coverage if and when a PMA is obtained. However, there
can be no  assurance that such  coverage will  continue to be  available in  the
amount desired or on terms acceptable to the Company, or that such coverage will
be  adequate for  liabilities actually  incurred. Any  uninsured or underinsured
claim brought against the Company, or  any claim or product recall that  results
in  significant  cost  to  or  adverse  publicity  against  the  Company,  could
materially and adversely affect the Company's business, financial condition  and
results of operations.
 
LITIGATION
 
    The  Company  is  not a  party  to  any pending  legal  proceeding  that, if
determined adversely to the Company, the Company believes would have a  material
adverse effect on the Company. See "-- Intellectual Property Matters."
 
EMPLOYEES
 
    As of May 15, 1996 the Company had 32 employees, including 8 in research and
development,   11  in  manufacturing,  7  in   sales  and  marketing  and  6  in
administration. All employees have entered into confidentiality agreements  with
the  Company but the Company does  not otherwise have employment agreements with
any of its employees. None of the Company's employees is covered by a collective
bargaining agreement and the Company has experienced no work stoppages to date.
 
FACILITIES
 
    The  Company  leases  an  approximately  17,700  square  foot  building   in
Sunnyvale, California. The facility contains a Class 10,000 clean room for laser
handpiece  and catheter fabrication. The facility  is leased through March 1998,
but the lease  may be terminated  earlier by  the Company upon  135 days'  prior
written  notice  and  payment  of  a penalty  of  $6,000,  or  extended  for two
additional one-year periods. The  Company's former affiliate, Atlantis  Catheter
Company,  Inc.,  currently  subleases  approximately 8,850  square  feet  of the
premises for which it reimburses the Company  for a pro-rata share of the  rent.
This  sublease  can be  terminated upon  60  days' notice  by either  party. The
Company believes  that  this  facility  is  adequate  to  meet  its  foreseeable
requirements  through at least  1996. There can be  no assurance that additional
facilities will be available to the Company if and when needed thereafter.
 
                                       33
<PAGE>
                                   MANAGEMENT
 
DIRECTORS AND EXECUTIVE OFFICERS
 
    The following table sets forth  certain information regarding the  directors
and executive officers of the Company:
 
<TABLE>
<CAPTION>
                NAME                  AGE                 POSITION
- - ------------------------------------  ----  ------------------------------------
<S>                                   <C>   <C>
Douglas Murphy-Chutorian, M.D.(1)      41   Chairman of the Board and Chief
                                             Executive Officer
Richard L. Mueller Jr.                 40   President, Chief Operating Officer
                                             and Director
Barbara A. Dreblow                     39   Chief Financial Officer
Janet Kaiser Castaneda                 53   Vice President, Legal
Linda J. Fenney, M.D.                  45   Vice President, Medical Affairs
Stuart D. Harman                       43   Vice President, Product Development
Margaret S. Yarak                      43   Vice President, Marketing
Robert L. Mortensen(1)(2)              62   Director
Iain M. Watson(1)(2)                   40   Director
</TABLE>
 
- - ------------------------
(1) Member of the Compensation Committee
(2) Member of the Audit Committee
 
    All  directors hold office until the  next annual meeting of shareholders or
until their successors have  been elected and qualified.  Officers serve at  the
discretion  of  the  Board  and  are appointed  annually.  There  are  no family
relationships between the directors or officers of the Company.
 
    DOUGLAS MURPHY-CHUTORIAN,  M.D. has  been Chairman  of the  Board and  Chief
Executive  Officer of the Company since June 1989. Dr. Murphy-Chutorian was also
Chairman of  the Board  of  Atlantis Catheter  Company, Inc.  ("Atlantis")  from
November  1993  to  March  1996 when  Atlantis  was  acquired  by Biocompatibles
International plc. Dr.  Murphy-Chutorian is an  interventional cardiologist  and
served  as a  Clinical Assistant Professor  in the Department  of Cardiology and
Cardiovascular Medicine  at  Albert  Einstein College  of  Medicine  (Montefiore
Division) and Stanford University Medical Center from 1986 through July 1990. He
is  currently a  member of the  voluntary clinical staff  of Stanford University
Medical Center and of Montefiore  Medical Center. Dr. Murphy-Chutorian  received
his   M.D.  degree  from  the  College  of  Physicians  and  Surgeons,  Columbia
University, completed his residency at New York University/Bellevue Hospital and
completed his cardiology training at Stanford University Medical Center.
 
    RICHARD L. MUELLER, JR.  has been President and  Chief Operating Officer  of
the  Company since December 1995. From May 1994 until December 1995, Mr. Mueller
was  Vice  President  of  Research   and  Development  at  Heartport,  Inc.,   a
minimally-invasive  cardiac surgery company. From  November 1990 until May 1994,
Mr. Mueller was Director of Research and Development at Origin Medsystems, Inc.,
an endosurgical device manufacturer.  From March 1987  until November 1990,  Mr.
Mueller  was  Director  of  New  Product  Development  at  Devices  for Vascular
Intervention, Inc., a  coronary atherectomy  manufacturer. Mr.  Mueller holds  a
B.S.E.E.  degree from Northwestern  Polytechnic University and  a B.S. degree in
business management from Westminster College.
 
    BARBARA A. DREBLOW  has been Chief  Financial Officer of  the Company  since
November 1994. From November 1992 until November 1994, Ms. Dreblow was Corporate
Controller  and  Director  of  Finance  for  First  Pacific  Networks,  Inc.,  a
telecommunications equipment manufacturer. From November 1989 to November  1992,
Ms.  Dreblow was a manager  with Coopers & Lybrand,  L.L.P., a public accounting
firm. Ms. Dreblow is a certified public accountant.
 
    JANET KAISER CASTANEDA has been Vice  President, Legal of the Company  since
March  1996. From July 1988  until March 1996, Ms.  Castaneda was an attorney at
the Law Offices of James E. Eakin, an intellectual
 
                                       34
<PAGE>
property firm  in Belmont,  California. Ms.  Castaneda holds  a B.S.  degree  in
Medical Technology from Michigan State University, a J.D. degree from University
of Puget Sound and is a Registered Patent Attorney.
 
    LINDA  J.  FENNEY, M.D.  has  been Vice  President,  Medical Affairs  of the
Company since February 1996. From November 1994 to December 1995, Dr. Fenney was
Director of Safety and Surveillance  for Roche Corporation. From September  1993
to  November 1994, Dr. Fenney was Director  of Labeling and Post Marketed Safety
for Syntex Pharmaceutical Co.  and from 1989 to  1993 she was Associate  Medical
Director, Cardiovascular Therapy at the Institute of Clinical Medicine at Syntex
Pharmaceutical  Co. From 1989 to 1995, Dr.  Fenney was a member of the voluntary
clinical faculty in Cardiology at Stanford University Medical Center. Dr. Fenney
received her  medical  degree from  London  University and  completed  residency
training in England and at Stanford University Medical Center.
 
    STUART D. HARMAN has been Vice President, Product Development of the Company
since January 1996. From April 1994 until December 1995, Mr. Harman was Director
of  the Surgical  Products Division  of the  Company. From  September 1991 until
March 1994, Mr. Harman was Marketing  Manager for Sunrise Technologies, Inc.,  a
medical laser manufacturer. From 1980 until August 1991, Mr. Harman held various
engineering  and marketing management positions  at Heraeus LaserSonics, Inc., a
medical laser manufacturer.
 
    MARGARET S. YARAK has  been Vice President, Marketing  of the Company  since
December  1995. From April 1992 to December  1995, Ms. Yarak was a marketing and
public  relations  consultant  to  several  medical  device  and  pharmaceutical
companies.   From  1989  to  1992,  Ms.  Yarak  was  Vice  President,  Corporate
Development of SysteMed, Inc., a pharmacy benefits management firm. From 1984 to
1989 she held a  variety of marketing positions  at McGaw, Inc., an  intravenous
products  and medical  device company.  Ms. Yarak  received a  Masters degree in
Education from Tufts University.
 
    ROBERT L. MORTENSEN  has been a  director of the  Company since April  1992.
Since 1984, Mr. Mortensen has been either President or Chairman of the Board and
a  director of  Lightwave Electronics  Corporation, a  solid-state laser company
that he founded. He holds an MBA from Harvard University.
 
    IAIN M. WATSON has been  a director of the  Company since April 1992.  Since
September  1993,  Mr. Watson  has been  President of  HAL Investments,  Inc., an
investment company.  From  1980  to  September 1993,  Mr.  Watson  held  various
positions  with the Boston  Consulting Group, a  management consulting firm. Mr.
Watson holds an MBA from Harvard University.
 
BOARD COMMITTEES
 
    The Board  of  Directors  formed  a  Compensation  Committee  and  an  Audit
Committee  in 1994. Prior to such date, there were no committees of the Board of
Directors.  The  Compensation  Committee  makes  recommendations  to  the  Board
concerning  salaries and incentive  compensation for the  Company's officers and
employees and administers  the Company's  Stock Option Plan  and Employee  Stock
Purchase  Plan. The Audit Committee  reviews the results and  scope of the audit
and other  services provided  by the  Company's independent  auditors  including
review and analysis of the Company's systems and the adequacy of controls.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
    The  Compensation  Committee  of  the Board  of  Directors  consists  of Dr.
Murphy-Chutorian, Mr. Mortensen and  Mr. Watson. No  member of the  Compensation
Committee   or  executive  officer  of  the  Company  has  a  relationship  that
constitutes an interlocking relationship with executive officers or directors of
another entity.
 
LIMITATION OF LIABILITY AND INDEMNIFICATION
 
    The Company's Restated  Articles of Incorporation  eliminate to the  fullest
extent  permissible under California  law the liability of  its directors to the
Company for monetary damages. Such limitation  of liability does not affect  the
availability  of equitable remedies such as  injunctive relief or rescission. In
addition, the Company's  Amended and  Restated Bylaws provide  that the  Company
must  indemnify  its officers,  directors, employees  and  other agents,  to the
fullest extent  permitted  by  California  law. The  Company  has  entered  into
 
                                       35
<PAGE>
indemnification  agreements  with each  officer,  director and  employee  of the
Company to such effect. At present, there is no pending litigation or proceeding
involving any  director,  officer,  employee  or  agent  of  the  Company  where
indemnification  will be required  or permitted. Insofar  as indemnification for
liabilities  arising  under  the  Securities  Act  of  1933,  as  amended   (the
"Securities   Act"),  may  be  permitted   to  officers,  directors  or  persons
controlling the Company pursuant  to the foregoing  provisions, the Company  has
been informed that in the opinion of the Securities and Exchange Commission (the
"Commission")  such indemnification is against public policy as expressed in the
Securities Act and is therefore unenforceable.  The Company will seek to  obtain
officers' and directors' insurance in the near future. The Company will bear the
expenses of such policy.
 
DIRECTOR COMPENSATION
 
    Directors who are not compensated as employees or consultants to the Company
receive  a retainer of $10,000  per year for serving  on the Board of Directors,
plus fees of $1,500 per board meeting and $1,500 per committee meeting, provided
such committee meeting does not occur on the same day as a board meeting.
 
    The  Company  also  has  a  Director  Stock  Option  Plan  for  non-employee
directors.  Directors  Iain Watson  and Robert  Mortensen  were each  granted an
option to purchase an aggregate of 9,000 shares of Common Stock pursuant to such
Plan in fiscal 1995. See "Management -- Director Stock Option Plan."
 
EXECUTIVE COMPENSATION
 
    The following  table  sets  forth all  compensation  received  for  services
rendered  to the Company and the Company's subsidiaries in all capacities during
fiscal 1995 by (i) the Company's Chief Executive Officer and (ii) the  Company's
two  other executive officers whose  total compensation exceeded $100,000 during
fiscal 1995 (together, the "Named Executive Officers"):
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                               LONG-TERM
                                                                                             COMPENSATION
                                                                                             -------------
                                                                                                AWARDS
                                                                                 ANNUAL      -------------
                                                                              COMPENSATION    SECURITIES
                                                                              -------------   UNDERLYING         ALL OTHER
NAME AND PRINCIPAL POSITIONS                                         YEAR        SALARY      OPTIONS/SARS     COMPENSATION(1)
- - -----------------------------------------------------------------  ---------  -------------  -------------  -------------------
<S>                                                                <C>        <C>            <C>            <C>
Douglas Murphy-Chutorian, M.D. ..................................       1995   $   207,130        --             $     320
 Chairman of the Board and Chief Executive Officer
Barbara A. Dreblow ..............................................       1995       100,000        --                    66
 Chief Financial Officer
Stuart D. Harman ................................................       1995       100,666        106,029              112
 Vice President, Product Development
</TABLE>
 
- - ------------------------
 
(1) Payment of life insurance premiums.
 
                                       36
<PAGE>
    The following  table sets  forth certain  information concerning  grants  of
stock  options to each  of the Named  Executive Officers during  the fiscal year
ended December 31, 1995.
 
                     OPTION/SAR GRANTS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                                                                                POTENTIAL REALIZABLE
                                                      INDIVIDUAL GRANTS(1)                        VALUE AT ASSUMED
                                  ------------------------------------------------------------    ANNUAL RATES OF
                                    NUMBER OF    PERCENT OF TOTAL                                   STOCK PRICE
                                   SECURITIES      OPTIONS/SARS                                   APPRECIATION FOR
                                   UNDERLYING       GRANTED TO       EXERCISE OR                   OPTION TERM(2)
                                  OPTIONS/SARS     EMPLOYEES IN      BASE PRICE    EXPIRATION   --------------------
NAME                                 GRANTED        FISCAL YEAR        ($/SH)         DATE         5%         10%
- - --------------------------------  -------------  -----------------  -------------  -----------  ---------  ---------
<S>                               <C>            <C>                <C>            <C>          <C>        <C>
Douglas Murphy-Chutorian,
 M.D. ..........................       --               --               --            --          --         --
Barbara A. Dreblow..............       --               --               --            --          --         --
Stuart D. Harman................      106,029             8.10%       $    1.67       12/31/05  $   8,836  $  17,672
</TABLE>
 
- - ------------------------
(1) Each of these options was granted  pursuant to the Stock Option Plan.  These
    options  were granted at an exercise price equal to the fair market value of
    the Company's Common Stock  as determined by the  Board of Directors of  the
    Company  on  the  date of  grant  and,  as long  as  the  optionee maintains
    continuous employment with the Company, vest over a three year period at the
    rate of one-third  of the shares  on the  first anniversary of  the date  of
    grant and 1/36th of the grant per month thereafter. The options granted were
    Incentive  Stock Options. No options were granted for a term longer than ten
    years. No SARs were granted.
 
(2) In accordance  with the  rules of  the Securities  and Exchange  Commission,
    shown  are the hypothetical  gains or "option spreads"  that would exist for
    the respective options.  These gains are  based on assumed  rates of  annual
    compounded  stock price appreciation of 5% and  10% from the date the option
    was granted over  the full  option term.  The 5%  and 10%  assumed rates  of
    appreciation  are  mandated  by  the  rules of  the  Commission  and  do not
    represent the Company's estimate  or projection of  future increases in  the
    price of its Common Stock.
 
    The  following table sets forth certain  information as of December 31, 1995
concerning exercisable and unexercisable stock options held by each of the Named
Executive Officers. None of the  Named Executive Officers exercised any  options
during fiscal year 1995.
 
    AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END
                               OPTION/SAR VALUES
 
<TABLE>
<CAPTION>
                                                               NUMBER OF SECURITIES
                                                              UNDERLYING UNEXERCISED       VALUE OF UNEXERCISED
                                                                 OPTIONS/SARS AT        IN-THE-MONEY OPTIONS/SARS
                                                                 FISCAL YEAR END          AT FISCAL YEAR END(1)
                                                            --------------------------  --------------------------
NAME                                                        EXERCISABLE  UNEXERCISABLE  EXERCISABLE  UNEXERCISABLE
- - ----------------------------------------------------------  -----------  -------------  -----------  -------------
<S>                                                         <C>          <C>            <C>          <C>
Douglas Murphy-Chutorian, M.D. ...........................      --            --            --            --
Barbara A. Dreblow........................................      54,168         95,832    $  12,639    $    22,361
Stuart D. Harman..........................................       8,151        111,849        1,902          1,358
</TABLE>
 
- - ------------------------
(1) The value for an "in the money" option represents the difference between the
    exercise  price of such  option and the  fair market value  of the Company's
    Common Stock at December  31, 1995 as determined  by the Company's Board  of
    Directors, multiplied by the total number of shares subject to the option.
 
STOCK OPTION PLAN
 
    The Company's Stock Option Plan (the "Stock Plan") provides for the granting
to employees of incentive stock options within the meaning of Section 422 of the
Internal Revenue Code of 1986, as amended (the "Internal Revenue Code"), and for
the  granting to  employees and  consultants of  nonstatutory stock  options and
stock purchase rights ("SPRs"). The amended and restated Stock Plan was approved
by the  Board  of  Directors and  by  the  shareholders in  April  1996.  Unless
terminated sooner, the Stock Plan will
 
                                       37
<PAGE>
terminate  automatically March 31,  2006. The Board has  the authority to amend,
suspend or terminate the Stock Plan, provided that no such action may affect any
share of  Common Stock  previously  issued and  sold  or any  option  previously
granted under the Stock Plan.
 
    Four million shares of Common Stock have been reserved for issuance pursuant
to  the  Stock Plan.  As  of May  15, 1996,  options  to purchase  an additional
2,662,526 shares of  Common Stock  were outstanding under  the Stock  Plan at  a
weighted  average exercise price of $1.81 per share, and an additional 1,332,230
shares of Common Stock remained available for future grant.
 
    The Stock Plan may be administered by the Board of Directors or a  committee
of the Board (the "Committee"), which Committee is required to be constituted to
comply with Section 16(b) of the Exchange Act and applicable laws. The Committee
has  the power  to determine  the terms  and conditions  of the  options or SPRs
granted, including the  exercise price,  the number  of shares  subject to  each
option  or SPR  and the  exercisability thereof,  and the  form of consideration
payable upon exercise.  Options and SPRs  granted under the  Stock Plan are  not
generally  transferable by the optionee  other than by will  or laws of descent,
and each option and SPR is exercisable during the lifetime of the optionee  only
by  such optionee. Options granted  under the Stock Plan  to date typically vest
over three years and have a ten-year term. Options granted under the Stock  Plan
must  be exercised  within three months  of the  end of optionee's  status as an
employee or  consultant of  the  Company, or  within  twelve months  after  such
optionee's  termination by death or  disability, but in no  event later than the
expiration of  the option's  ten year  term. In  the case  of SPRs,  unless  the
Committee   determines  otherwise,  the   Restricted  Stock  Purchase  Agreement
evidencing the  sale  of the  shares  to purchaser  shall  grant the  Company  a
repurchase  option exercisable upon the  voluntary or involuntary termination of
the purchaser's employment with the Company  for any reason (including death  or
disability).   The  purchase  price  for  Shares  repurchased  pursuant  to  the
Restricted Stock Purchase  Agreement shall  be the  original price  paid by  the
purchaser  and may be paid by cancellation  of any indebtedness of the purchaser
to the Company. The repurchase  option shall lapse at  a rate determined by  the
Committee.  The exercise price of all  incentive stock options granted under the
Stock Plan must be at least equal to  the fair market value of the Common  Stock
on  the date of grant. The exercise price of nonstatutory stock options and SPRs
granted under  the Plan  is determined  by the  Committee. With  respect to  any
participant  who owns stock possessing more than  10% of the voting power of all
classes of the Company's  outstanding capital stock, the  exercise price of  any
incentive stock option granted must equal at least 110% of the fair market value
on  the grant date and  the term of such incentive  stock option must not exceed
five years. The term of all other  options granted under the Stock Plan may  not
exceed ten years.
 
    The Stock Plan provides that in the event of a merger of the Company with or
into  another corporation or a sale of substantially all of the Company's assets
or SPR, each option and SPR shall be assumed or an equivalent option substituted
by the  successor corporation.  If  the outstanding  options  and SPRs  are  not
assumed or substituted as described in the preceding sentence, the option or the
SPR  will terminate unless  the Administrator shall  provide for the accelerated
vesting of  options outstanding  at such  time. If  the Administrator  makes  an
option  or SPR exercisable in full  in the event of a  merger or sale of assets,
the Administrator shall  notify the  optionee that the  option or  SPR shall  be
fully  exercisable  for a  period of  fifteen (15)  days from  the date  of such
notice, and the option or SPR will terminate upon the expiration of such period.
 
    Richard L.  Mueller Jr.,  Chief  Operating Officer  and  a director  of  the
Company,  was granted an  option to purchase  an aggregate of  750,000 shares of
Common Stock of the Company in December  1995 at an exercise price of $1.67  per
share.  Linda J.  Fenney, Vice  President, Medical  Affairs of  the Company, was
granted an option to purchase an aggregate  of 64,500 shares of Common Stock  of
the  Company in December 1995 at an  exercise price of $1.67 per share. Margaret
S. Yarak, Vice  President, Marketing of  the Company, was  granted an option  to
purchase  an  aggregate of  75,000  shares of  Common  Stock of  the  Company in
December 1995 at an exercise price of $1.67 per share. None of such officers was
a Named Executive Officer for 1995.
 
                                       38
<PAGE>
DIRECTOR STOCK OPTION PLAN
 
    Non-employee directors are  entitled to  participate in  the Director  Stock
Option  Plan (the "Director  Plan"). The amended and  restated Director Plan was
adopted by  the Board  of Directors  and  the shareholders  in April  1996.  The
Director  Plan has a term of ten years and will terminate March 31, 2006, unless
terminated sooner by the Board. A total  of 200,000 shares of Common Stock  have
been  reserved for issuance under the Director Plan. As of May 15, 1996, options
to purchase 33,000 shares of Common Stock  were outstanding at a price of  $5.91
per  share,  and options  to purchase  167,000 shares  of Common  Stock remained
available for future grant under the Director Plan.
 
    The Director  Plan provides  for the  automatic grant  of 22,500  shares  of
Common  Stock to  each non-employee director  first elected or  appointed to the
Board after  June 1,  1996 on  the date  on which  such person  first becomes  a
non-employee  director  (the  "First Option").  Subsequently,  each non-employee
director shall automatically be  granted an option to  purchase 7,500 shares  (a
"Subsequent  Option")  each year  on the  date  of such  non-employee director's
annual reelection to the Board, if on such  date he or she shall have served  on
the  Board for at least six months. Each First Option and each Subsequent Option
shall have a term of  10 years. The First Option  shall vest as to one-third  of
the  shares subject to  the First Option  per year following  the date of grant.
Each Subsequent Option shall vest in full one year following the date of  grant.
The exercise prices of the First Option and each Subsequent Option shall be 100%
of  the fair market  value per share  of the Common  Stock, generally determined
with reference to  the closing  price of  the Common  Stock as  reported on  the
Nasdaq National Market, on the date of grant.
 
    In  the event of a merger of the Company or the sale of substantially all of
the assets of the Company,  each option may be  assumed or an equivalent  option
substituted by the successor corporation. If an option is assumed or substituted
for,  it  shall  continue to  vest  as provided  in  the Director  Plan.  If the
successor does not agree to assume  or substitute the option, each option  shall
also  become fully vested and  exercisable for a period  of thirty days from the
date the Board notifies the optionee of the option's full exercisability,  after
which period the option shall terminate. Options granted under the Director Plan
must  be exercised within  sixty days of the  end of the  optionee's tenure as a
director of  the Company,  but in  no event  later than  the expiration  of  the
option's  ten year term. In the case  of death or disability of the non-employee
director terminating the non-employee  director's status as  a director or  such
death  or disability occurring sixty days  after termination of director status,
the optionee will  have twelve  months from  such date  to exercise  his or  her
option,  but in no event may the option be exercised after the expiration of the
option's  ten  year  term.  No  option  granted  under  the  Director  Plan   is
transferable  by the  optionee other  than by  will or  the laws  of descent and
distribution, and  each  option  is  exercisable, during  the  lifetime  of  the
optionee, only by such optionee.
 
    The administration and other terms of the Director Plan have been structured
so  that  options  granted  to the  non-employee  directors  who  administer the
Company's stock plans shall qualify as transactions exempt from Section 16(b) of
the Exchange Act pursuant to Rule 16b-3 promulgated thereunder.
 
EMPLOYEE STOCK PURCHASE PLAN
 
    The Company's Employee Stock Purchase Plan (the "Purchase Plan") was adopted
by the Board of  Directors and shareholders  in April 1996.  A total of  250,000
shares  of Common Stock has been reserved  for issuance under the Purchase Plan.
The Purchase  Plan,  which is  intended  to qualify  under  Section 423  of  the
Internal Revenue Code, has two six-month offering periods each year beginning on
the  first trading day on or after  May 16 and November 16, respectively, except
for the first such offering period which  commences on the first trading day  on
or  after the date the Commission  declares the Company's Registration Statement
effective and will end on the last  trading day on or before November 15,  1996.
The  Purchase Plan is administered  by the Board of  Directors or by a committee
appointed by the Board. The Purchase Plan  will be administered so as to  comply
with any applicable requirements of Rule 16b-3 of the Securities Exchange Act of
1934,  as amended (the "Exchange Act"). Employees are eligible to participate if
they are customarily employed by the Company or any participating subsidiary for
at least 20 hours per week and more  than five months in any calendar year.  The
Purchase Plan permits eligible employees to purchase Common
Stock  through payroll  deductions of  up to  15% of  an employee's compensation
except that in the
 
                                       39
<PAGE>
first offering period  payroll deductions of  up to 20%  are allowed  (including
commissions,  overtime and  other bonuses and  incentive compensation),  up to a
maximum of $21,250  for all  offering periods  ending within  the same  calendar
year.  The price of stock  purchased under the Purchase Plan  will be 85% of the
lower of the fair market  value of the Common Stock  at the beginning or at  the
end  of  each offering  period.  Employees may  end  their participation  in the
offering at any  time during an  offering period,  and they will  be paid  their
payroll  deductions to date. Participation  ends automatically on termination of
employment with the Company.
 
    Rights granted under the Purchase Plan are not transferable by a participant
other than  by will,  the laws  of  descent and  distribution, or  as  otherwise
provided  under the Purchase Plan. The Purchase Plan provides that, in the event
of a  merger of  the Company  with  or into  another corporation  or a  sale  of
substantially  all of the Company's assets,  the Board of Directors will shorten
the offering period (so that employees' rights to purchase stock under the  Plan
are  exercised prior to  the merger or  sale of assets).  The Purchase Plan will
terminate in April 2006. The  Board of Directors has  the authority to amend  or
terminate the Purchase Plan, except that no such action may adversely affect any
outstanding rights to purchase stock under the Purchase Plan.
 
                                       40
<PAGE>
                              CERTAIN TRANSACTIONS
 
    Between  January 1994 and July 1994,  the Company raised capital through the
issuance of  promissory notes  in which  purchasers of  each $50,000  unit  were
issued  (i) a  nonrecourse promissory note  in the principal  amount of $50,000,
bearing interest at an annual rate  of 10%, with principal and interest  payable
on  the  earlier  of  consummation  of the  Offering  or  November  12,  1995 (a
"Nonrecourse Note"); (ii) 33,333 shares of Common Stock; and (iii) a warrant  to
purchase  up to 33,333 shares  of Common Stock at a  purchase price of $1.67 per
share. Upon  the maturity  of the  Nonrecourse Notes,  each holder  thereof  was
offered  by the  Company a  further warrant  to purchase  up to  1,764 shares of
Common Stock at a purchase price of $4.17 per share in exchange for agreeing  to
delay  redemption of  their Nonrecourse  Note until  December 31,  1996. Iain M.
Watson, a director  of the Company,  purchased a $50,000  unit in the  financing
described  above, and  was issued a  warrant to  purchase up to  1,764 shares of
Common Stock at a purchase price of $4.17 per share in exchange for agreeing  to
delay  redemption of his Nonrecourse Note  until December 31, 1996. In addition,
during 1995, the Company borrowed a  total of $100,000 from Mr. Watson  pursuant
to  two notes payable with  Mr. Watson bearing interest  at 10% per annum. These
notes were repaid in full during 1995.
 
                                       41
<PAGE>
                             PRINCIPAL SHAREHOLDERS
 
    The following table  sets forth certain  information before and  immediately
after the Offering regarding beneficial ownership of Common Stock of the Company
by  (i) each person  who is known by  the Company to be  the beneficial owner of
more than five  percent of  the outstanding shares  of Common  Stock; (ii)  each
director and each Named Executive Officer; and (iii) all directors and executive
officers as a group, based on shares outstanding as of May 15, 1996.
 
<TABLE>
<CAPTION>
                                                                             SHARES BENEFICIALLY    SHARES BENEFICIALLY
                                                                             OWNED PRIOR TO THE       OWNED AFTER THE
                                                                                  OFFERING              OFFERING(1)
                                                                           -----------------------  -------------------
NAME AND ADDRESS OF BENEFICIAL OWNER                                         NUMBER      PERCENT          PERCENT
- - -------------------------------------------------------------------------  ----------  -----------  -------------------
<S>                                                                        <C>         <C>          <C>
Douglas Murphy-Chutorian, M.D.(2)........................................   5,063,427       43.3%            32.3%
  c/o Eclipse Surgical Technologies, Inc.
  1049 Kiel Court
  Sunnyvale, CA 94089
Tawfeek Shaheen(3).......................................................   1,090,689        9.2%             6.9%
  Box 316
  Sonoma, CA 95476
Iain M. Watson(4)........................................................     218,298        1.9%             1.4%
Barbara A. Dreblow(5)....................................................      83,334       *                *
Robert L. Mortensen(6)...................................................      61,029       *                *
Stuart D. Harman(7)......................................................      10,866       *                *
Richard L. Mueller Jr....................................................      --          --               --
All directors and executive officers as a group (8 persons)(8)...........   5,448,954       45.6%            34.2%
</TABLE>
 
- - ------------------------
 
(1) Assumes no exercise of the Underwriter's over-allotment option.
 
(2)  Includes an aggregate  of 3,719,454 shares  of Common Stock  held by Leslie
    Murphy-Chutorian,  the   wife  of   Dr.   Murphy-Chutorian,  and   by   Mrs.
    Murphy-Chutorian as custodian for their minor children.
 
(3) Includes warrants to purchase an aggregate of 126,294 shares of Common Stock
    exercisable within 60 days of the date hereof.
 
(4)  Includes options and warrants to purchase  an aggregate of 96,126 shares of
    Common Stock exercisable within 60 days of the date hereof.
 
(5) Consists of  options to  purchase an aggregate  of 83,334  shares of  Common
    Stock exercisable within 60 days of the date hereof.
 
(6)  Consists of  options to  purchase an aggregate  of 61,029  shares of Common
    Stock exercisable within 60 days of the date hereof.
 
(7) Consists of  options to  purchase an aggregate  of 10,866  shares of  Common
    Stock exercisable within 60 days of the date hereof.
 
(8)  Includes options and warrants to purchase an aggregate of 263,355 shares of
    Common Stock exercisable within 60 days of the date hereof. See notes 3,  4,
    5, 6 and 7 above.
 
                                       42
<PAGE>
                          DESCRIPTION OF CAPITAL STOCK
 
    The authorized capital stock of the Company consists of 50,000,000 shares of
Common  Stock, no  par value,  and 5,000,000 shares  of Preferred  Stock, no par
value. As  of  May  15, 1996,  there  were  11,682,396 shares  of  Common  Stock
outstanding,  a total of 201  shareholders of record and  no shares of Preferred
Stock outstanding. The  following descriptions of  the Company's securities  are
qualified  in their entirety by reference  to the Company's Amended and Restated
Articles of  Incorporation and  Amended  and Restated  Bylaws, and  the  warrant
agreements described below.
 
COMMON STOCK
 
    The  holders of Common Stock are entitled to one vote for each share held on
all matters submitted  to a vote  of the shareholders.  Upon giving the  legally
required  notice,  shareholders  may cumulate  their  votes in  the  election of
directors. Subject to preferences that may be applicable to any then-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.  See  "Dividend  Policy."   In  the  event  of  a
liquidation, dissolution, or winding  up of the Company,  holders of the  Common
Stock  are entitled to  share ratably in  all assets remaining  after payment of
liabilities and  any liquidation  preference of  any then-outstanding  Preferred
Stock.  Holders of Common Stock have 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
 
    The Board of Directors has the authority, without the requirement of further
shareholder  approval, to designate one or more series of Preferred Stock and to
fix the  rights, preferences,  privileges  and restrictions  thereof,  including
dividend  rights, conversion rights, voting  rights, preemptive rights, terms of
redemption, liquidation  preferences  and  sinking  fund  terms.  The  Board  of
Directors  similarly has the authority to fix  the number of shares of each such
series (up  to an  aggregate for  all  series of  Preferred Stock  of  5,000,000
shares); to increase or decrease such number of shares (but not below the number
of  shares of  any such series  then outstanding)  and to issue  up to 5,000,000
shares.
 
    The issuance of Preferred Stock could  adversely affect the voting power  of
holders  of  Common Stock  and  the likelihood  that  such holders  will receive
dividend payments and  payments upon liquidation  and could have  the effect  of
delaying, deferring, or preventing a change in control of the Company.
 
WARRANTS
 
    As  of May 15,  1996, there were warrants  outstanding to purchase 1,171,638
shares of Common Stock at exercise prices ranging from $1.67 to $4.17 per  share
and  expiration  dates through  1999. All  warrants  contain provisions  for the
adjustment of the exercise price upon the occurrence of certain events including
stock dividends, stock  splits, reorganizations,  reclassifications and  mergers
and  termination  upon certain  public offerings,  mergers  or sales  of Company
assets. The foregoing warrants  were issued in reliance  on exemptions from  the
registration  requirements of the Securities  Act. Shares issuable upon exercise
of the warrants will be "restricted"  securities for purposes of the  Securities
Act.
 
REGISTRATION RIGHTS
 
    Under the terms of certain registration rights agreements, among the Company
and  certain holders of its securities  (the "Rights Agreements"), following the
closing of  the Offering,  the  holders of  approximately 10,253,016  shares  of
Common  Stock (the "Registrable Securities"), will be entitled to certain rights
with respect to the registration of such shares under the Securities Act.  Under
the Rights Agreements, if the Company proposes to register any of its securities
under  the Securities Act,  either for its  own account or  the account of other
shareholders, the holders of  Registrable Securities are  entitled to notice  of
such  registration  and are  entitled  to include  their  Registrable Securities
therein, subject to, among  other conditions, the Company's  right to limit  the
number  of such shares included  in any such registration  based upon the advice
 
                                       43
<PAGE>
of the underwriters. Further, holders of Registrable Securities may require  the
Company to register all or a portion of their Registrable Securities at any time
after  180 days  following the effective  date of the  Registration Statement of
which  this  Prospectus  forms  a  part,  subject  to  certain  conditions   and
limitations.
 
TRANSFER AGENT AND REGISTRAR
 
    The  Transfer Agent and Registrar for the Common Stock is The First National
Bank of Boston.
 
                                       44
<PAGE>
                        SHARES ELIGIBLE FOR FUTURE SALE
 
    Upon  the consummation  of the  Offering, the  Company will  have 15,682,396
shares of Common Stock  outstanding, based on shares  outstanding as of May  15,
1996,  of which  the 4,000,000  shares offered  hereby will  be freely tradeable
without restriction  or  further  registration under  the  Securities  Act.  The
remaining 11,682,396 shares of Common Stock to be outstanding after the Offering
are deemed to be "restricted securities," as that term is defined under Rule 144
promulgated  under the Securities Act, because  such shares were issued and sold
by the Company in transactions not involving a public offering and in the future
may only be sold pursuant to a registration statement under the Securities  Act,
in  compliance with the provisions of Rule  144 or pursuant to another exemption
under the Securities  Act. Sales  of a substantial  number of  shares of  Common
Stock  in the  public market following  the Offering could  adversely affect the
market price  for  the  Common Stock.  The  number  of shares  of  Common  Stock
available  for sale in  the public market  is limited by  restrictions under the
Securities Act, and by lock-up agreements under which the holders of such shares
have agreed not to sell or otherwise dispose of any of their shares for a period
of 180 days after the date of this Prospectus without the prior written  consent
of  PaineWebber Incorporated. However, PaineWebber Incorporated may, in its sole
discretion and at any  time without notice,  release all or  any portion of  the
securities  subject to  lock-up agreements. As  a result  of these restrictions,
based on shares outstanding as of May 15, 1996, on the date of this  Prospectus,
a total of 642,267 shares other than the 4,000,000 shares offered hereby will be
eligible  for sale; an  additional 228,693 shares  will be eligible  for sale 90
days after  the date  of this  Prospectus pursuant  to Rule  144; an  additional
8,695,188  shares will  be eligible  for sale  180 days  after the  date of this
Prospectus under Rule 144. In addition,  the Company intends to register on  the
effective  date of  the Offering  a total  of 4,444,756  shares of  Common Stock
subject to  outstanding options  or reserved  for issuance  under the  Company's
Stock  Option Plan, Director Stock Option Plan and Employee Stock Purchase Plan.
Further, upon expiration of the lock-up agreements referred to above, holders of
approximately 10,253,016  shares of  Common Stock  will be  entitled to  certain
registration  rights, including  217,917 shares which  have the  right to demand
registration. Such  demands may  be made  as  early as  180 days  following  the
Offering.  If such  holders, by  exercising their  registration rights,  cause a
large number of  shares to be  registered and  sold in the  public market,  such
sales  could have a material  adverse effect on the  market price for the Common
Stock. See "Description  of Capital  Stock -- Registration  Rights" and  "Shares
Eligible for Future Sale."
 
    The  Company's officers  and directors  and certain  other shareholders have
agreed not to  sell or otherwise  dispose of  their shares of  Common Stock  (an
aggregate  of 10,629,999 shares plus 3,867,164 shares issuable upon the exercise
of outstanding warrants or options) for a  period of at least 180 days from  the
date  of  this  Prospectus, without  the  prior written  consent  of PaineWebber
Incorporated.
 
    In general, under  Rule 144  as currently in  effect, a  person (or  persons
whose  shares are aggregated),  who has beneficially  owned restricted shares of
Common Stock for at least two years  from the later of the date such  securities
were  acquired from the Company  or (if applicable) the  date they were acquired
from an affiliate, is entitled to sell, within any three-month period, a  number
of  shares that does  not exceed the  greater of (i)  1% of the  total number of
outstanding shares of Common Stock or, (ii) the average weekly trading volume in
the Common Stock on  the Nasdaq National Market  during the four calendar  weeks
preceding  the  date on  which notice  of such  sale was  filed under  Rule 144,
provided certain  requirements concerning  availability of  public  information,
manner of sale and notice of sale are satisfied.
 
    In addition, affiliates of the Company must comply with the restrictions and
requirements of Rule 144, other than the two-year holding period requirement, in
order  to sell shares of Common Stock  that are not restricted securities. Under
Rule 144(k), if a period of at  least three years has elapsed between the  later
of  the date restricted securities  were acquired from the  Company and the date
they were acquired  from an affiliate  of the Company,  a person who  is not  an
affiliate  at the time of sale and has  not been an affiliate at any time during
the three months preceding the sale could be entitled to sell the shares without
compliance with the foregoing requirements under Rule 144.
 
    Prior to the  Offering there has  been no  market for the  shares of  Common
Stock  and no prediction can be made as to the effect, if any, that market sales
of shares of Common Stock or the  availability of such securities for sale  will
have  on  the  market price  prevailing  from  time to  time.  Nevertheless, the
possibility that substantial amounts  of shares of Common  Stock may be sold  in
the  public market may adversely affect  prevailing market prices for the Common
Stock and could impair the Company's  ability to raise capital through the  sale
of its equity securities.
 
                                       45
<PAGE>
                                  UNDERWRITING
 
    The  underwriters  named below  (the  "Underwriters"), for  whom PaineWebber
Incorporated, Deutsche  Morgan  Grenfell/C. J.  Lawrence  Inc. and  Jefferies  &
Company,  Inc.  are  acting  as  representatives  (the  "Representatives"), have
severally agreed,  subject  to the  terms  and conditions  of  the  Underwriting
Agreement among the Company and the Underwriters (the "Underwriting Agreement"),
to  purchase  from  the Company,  and  the Company  has  agreed to  sell  to the
Underwriters, the number of shares of  Common Stock set forth opposite the  name
of  such Underwriter  below at  the price set  forth on  the cover  page of this
Prospectus under "Proceeds to Company":
 
<TABLE>
<CAPTION>
                                                                    NUMBER OF
                           UNDERWRITER                                SHARES
- - ------------------------------------------------------------------  ----------
<S>                                                                 <C>
PaineWebber Incorporated..........................................     893,500
Deutsche Morgan Grenfell/C. J. Lawrence Inc.......................     893,250
Jefferies & Company, Inc..........................................     893,250
H. D. Brous & Co., Inc............................................      80,000
Alex. Brown & Sons Incorporated...................................      80,000
Cowen & Co........................................................      80,000
Dillon, Read & Co. Inc............................................      80,000
Invemed Associates, Inc...........................................      80,000
Merrill Lynch, Pierce, Fenner & Smith Incorporated................      80,000
J.P. Morgan Securities Inc........................................      80,000
Morgan Stanley & Co. Incorporated.................................      80,000
Oppenheimer & Co., Inc............................................      80,000
Smith Barney Inc..................................................      80,000
Fahnestock & Co. Inc..............................................      40,000
Gordon, Haskett Capital Corporation...............................      40,000
Gruntal & Co., Incorporated.......................................      40,000
Ladenburg, Thalmann & Co., Inc....................................      40,000
Moness Crespi Hardt, Inc..........................................      40,000
Pennsylvania Merchant Group, Ltd..................................      40,000
Piper Jaffray Inc.................................................      40,000
Principal Financial Securities, Inc...............................      40,000
Punk, Ziegel & Knoell.............................................      40,000
Tucker Anthony Incorporated.......................................      40,000
Unterberg Harris..................................................      40,000
Vector Securities International, Inc..............................      40,000
Wedbush Morgan Securities Inc.....................................      40,000
                                                                    ----------
  Total...........................................................   4,000,000
                                                                    ----------
                                                                    ----------
</TABLE>
 
    The Underwriting Agreement provides that the obligations of the Underwriters
to purchase  the shares  of Common  Stock listed  above are  subject to  certain
conditions.  The Underwriting Agreement also  provides that the Underwriters are
committed to purchase, and the Company is  obligated to sell, all of the  shares
offered  hereby if  any of  the shares being  sold pursuant  to the Underwriting
Agreement are  purchased  (without  consideration  of any  shares  that  may  be
purchased through the exercise of the Underwriters' over-allotment option).
 
    The  Representatives have advised the  Company that the Underwriters propose
to offer  the shares  of Common  Stock to  the public  initially at  the  public
offering  price set forth  on the cover  page of this  Prospectus and to certain
dealers at such price less  a concession not in excess  of $0.65 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 initial public offering  of
the Common Stock, the public offering price, the concessions to selected dealers
and the reallowance to other dealers may be changed by the Representatives.
 
                                       46
<PAGE>
    The  Company has granted  to the Underwriters  an option, exercisable during
the 30-day period after the date of  this Prospectus, to purchase up to  600,000
additional shares of Common Stock at the initial public offering price set forth
on   the  cover  page  of  this  Prospectus,  less  underwriting  discounts  and
commissions.  The  Underwriters   may  exercise  such   option  only  to   cover
over-allotments, if any, incurred in the sales of shares of Common Stock. To the
extent  the Underwriters  exercise such  option, each  of the  Underwriters will
become obligated, subject to certain conditions, to purchase such percentage  of
such  additional  shares  of  Common  Stock as  is  approximately  equal  to the
percentage of shares of Common Stock that  it is obligated to purchase as  shown
in the table set forth above.
 
    The  Company  has  agreed  to  indemnify  the  Underwriters  against certain
liabilities, including liabilities under the Securities Act, or to contribute to
payments that the Underwriters may be required to make in respect thereof.
 
    The Representatives have  informed the Company  that they do  not intend  to
confirm sales to any account over which they exercise discretionary authority.
 
    The Company and each of its executive officers and directors, and certain of
its  existing shareholders, have agreed not to offer, sell, contract to sell, or
grant any option to  purchase or otherwise dispose  of, directly or  indirectly,
any shares of capital stock of the Company or any securities convertible into or
exercisable or exchangeable for any capital stock of the Company owned by any of
them  prior to  the expiration  of 180  days from  the date  of this Prospectus,
except (i) for the shares  of Common Stock offered  hereby, (ii) with the  prior
written  consent  of  PaineWebber Incorporated  and  (iii)  in the  case  of the
Company, for  the  issuance of  shares  of Common  Stock  upon the  exercise  of
options,  or  the  grant  of  options to  purchase  shares  of  Common  Stock or
restricted stock awards under the  Company's Stock Option Plan, Director  Option
Plan or Employee Stock Purchase Plan.
 
    Prior  to the Offering, there has been no public market for the Common Stock
of the Company.  The initial public  offering price was  determined pursuant  to
negotiations  between  the Company  and the  Representatives. Among  the factors
considered in  determining the  initial public  offering price,  in addition  to
prevailing market conditions, were certain financial information of the Company,
the  history of, and the prospects for, the Company and the industry in which it
competes, an  assessment  of the  Company's  management, its  past  and  present
operations,  the prospects for,  and timing of, future  revenues of the Company,
the present  state  of the  Company's  development,  and the  above  factors  in
relation  to market  values and  various valuation  measures of  other companies
engaged in activities similar to the Company. The initial public offering  price
set  forth  on  the  cover  page of  this  Prospectus  should  not,  however, be
considered an indication of the actual value of the Common Stock. Such price  is
subject  to change as a result of market conditions and other factors. There can
be no assurance that an active trading market will develop for the Common  Stock
or  that the  Common Stock  will trade  in the  public market  subsequent to the
Offering at or above the initial public offering price.
 
                                       47
<PAGE>
                                 LEGAL MATTERS
 
    Certain legal matters with respect to the securities which are being offered
hereby will be passed upon for the Company by Wilson Sonsini Goodrich &  Rosati,
Professional  Corporation, of Palo Alto, California  and for the Underwriters by
Skadden,  Arps,  Slate,  Meagher  &  Flom,  San  Francisco,  California.   Owen,
Wickersham  & Erickson has acted as special counsel to the Company in connection
with matters related  to the Company's  patents. Roger Erickson,  of counsel  to
such firm, is the owner of 17,463 shares of Common Stock.
 
                                    EXPERTS
 
    The financial statements of the Company as of December 31, 1995 and for each
of  the three years in the period ended December 31, 1995, included elsewhere in
this Prospectus  and  the  Registration  Statement, have  been  so  included  in
reliance  on the  report of Coopers  & Lybrand  L.L.P., independent accountants,
given on the authority of said firm  as experts in accounting and auditing.  The
discussion  of certain  intellectual property  matters in  the sections entitled
"Risk Factors --  Uncertainty Regarding  Patents and  Protection of  Proprietary
Technology;  Risks of Future Litigation"  and "Business -- Intellectual Property
Matters" have been so included in reliance  on the advice of Owen, Wickersham  &
Erickson,  given  on  the authority  of  such  firm as  experts  in intellectual
property matters.
 
                             ADDITIONAL INFORMATION
 
    The Company is not  currently subject to the  reporting requirements of  the
Exchange Act, but will become subject to the requirements of the Exchange Act as
of  the effective  date of the  Registration Statement of  which this Prospectus
forms a  part.  In accordance  with  the Exchange  Act,  the Company  will  file
reports,  proxy  statements, quarterly  reports and  other information  with the
Commission.  Such  reports,  proxy  statements,  quarterly  reports  and   other
information  can be inspected  and copied at the  public reference facilities of
the Commission at  450 Fifth Street,  N.W., Washington, D.C.  20549; at its  New
York Regional Office, 7 World Trade Center, New York, New York 10048; and at its
Chicago  Regional Office, 500  West Madison Street,  Chicago, Illinois 60661 and
copies of such material can be  obtained from the Commission's Public  Reference
Section at prescribed rates.
 
                                       48
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                            PAGES
                                                                            ----
<S>                                                                         <C>
Report of Independent Accountants.........................................  F-2
 
Financial Statements:
  Balance Sheets as of December 31, 1994 and 1995 and March 31, 1996
   (UNAUDITED)............................................................  F-3
  Statements of Operations for the years ended December 31, 1993, 1994 and
   1995 and the three months ended March 31, 1995 and 1996 (UNAUDITED)....  F-4
  Statements of Shareholders' Equity (Deficit) for the years ended
   December 31, 1993, 1994 and 1995 and the three months ended March 31,
   1995 and 1996 (UNAUDITED)..............................................  F-5
  Statements of Cash Flows for the years ended December 31, 1993, 1994 and
   1995 and the three months ended March 31, 1995 and 1996 (UNAUDITED)....  F-6
  Notes to Financial Statements...........................................  F-7
</TABLE>
 
                                      F-1
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and Shareholders
Eclipse Surgical Technologies, Inc.:
 
    We  have  audited  the  accompanying  balance  sheets  of  Eclipse  Surgical
Technologies, Inc. as of December 31, 1994 and 1995, and the related  statements
of  operations, shareholders'  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  Eclipse  Surgical
Technologies, Inc. as  of December 31,  1994 and  1995, and the  results of  its
operations  and its cash flows  for each of the three  years in the period ended
December 31, 1995, in conformity with generally accepted accounting principles.
 
                                          COOPERS & LYBRAND L.L.P.
 
San Jose, California
March 29, 1996
 
                                      F-2
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
                                 BALANCE SHEETS
                                 (IN THOUSANDS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                     DECEMBER 31,
                                                                                 --------------------
                                                                                   1994       1995
                                                                                 ---------  ---------   MARCH 31,
                                                                                                          1996
                                                                                                       -----------
                                                                                                       (UNAUDITED)
<S>                                                                              <C>        <C>        <C>
Current assets:
  Cash and cash equivalents....................................................  $     132  $     123   $   1,277
  Accounts receivable, net of allowance for doubtful accounts of $60 and $29 at
   December 31, 1994 and 1995, respectively, and $63 at March 31, 1996.........        381        532       1,440
  Inventories..................................................................      1,833      1,670       1,612
  Other current assets.........................................................        363         14          75
                                                                                 ---------  ---------  -----------
    Total current assets.......................................................      2,709      2,339       4,404
Property and equipment, net....................................................        108         98         135
Other assets...................................................................        105         22         140
                                                                                 ---------  ---------  -----------
    Total assets...............................................................  $   2,922  $   2,459   $   4,679
                                                                                 ---------  ---------  -----------
                                                                                 ---------  ---------  -----------
 
                                                   LIABILITIES
 
Current liabilities:
  Accounts payable.............................................................  $     951  $   1,217   $   1,233
  Accrued liabilities..........................................................        551        547         686
  Customer deposits............................................................        224        270         326
  Short-term borrowings........................................................     --             45      --
  Current portion of long-term debt............................................        326      1,809       1,691
                                                                                 ---------  ---------  -----------
    Total current liabilities..................................................      2,052      3,888       3,936
Long-term debt, less current portion...........................................      1,009     --              23
                                                                                 ---------  ---------  -----------
    Total liabilities..........................................................      3,061      3,888       3,959
                                                                                 ---------  ---------  -----------
Commitments and contingencies (Note 9).
 
                                          SHAREHOLDERS' EQUITY (DEFICIT)
 
Preferred stock, no par value:
  Authorized: 5,000 shares;
  Issued and outstanding: none
Common stock, no par value:
  Authorized: 50,000 shares;
  Issued and outstanding: 10,469 shares at December 31, 1994, 11,210 shares at
   December 31, 1995 and 11,682 shares at March 31, 1996.......................      3,450      4,690       6,659
Notes receivable for sale of common stock......................................     --           (104)     --
Accumulated deficit............................................................     (3,589)    (6,015)     (5,939)
                                                                                 ---------  ---------  -----------
    Total shareholders' equity (deficit).......................................       (139)    (1,429)        720
                                                                                 ---------  ---------  -----------
    Total liabilities and shareholders' equity (deficit).......................  $   2,922  $   2,459   $   4,679
                                                                                 ---------  ---------  -----------
                                                                                 ---------  ---------  -----------
</TABLE>
 
   The accompanying notes are an integral part of these financial statements
 
                                      F-3
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
                            STATEMENTS OF OPERATIONS
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                                               THREE MONTHS ENDED
                                                                 YEAR ENDED DECEMBER 31,           MARCH 31,
                                                             -------------------------------  --------------------
                                                               1993       1994       1995       1995       1996
                                                             ---------  ---------  ---------  ---------  ---------
                                                                                                  (UNAUDITED)
<S>                                                          <C>        <C>        <C>        <C>        <C>
Net revenues...............................................  $   2,105  $   2,020  $   2,707  $     528  $   1,752
Cost of revenues...........................................      1,013      1,173      1,642        382        502
                                                             ---------  ---------  ---------  ---------  ---------
  Gross profit.............................................      1,092        847      1,065        146      1,250
                                                             ---------  ---------  ---------  ---------  ---------
Operating expenses:
  Research and development.................................        906        971      1,010        195        517
  Sales and marketing......................................        794        392        879        191        396
  General and administrative...............................        325      1,031        681        199        211
                                                             ---------  ---------  ---------  ---------  ---------
    Total operating expenses...............................      2,025      2,394      2,570        585      1,124
                                                             ---------  ---------  ---------  ---------  ---------
      Operating income (loss)..............................       (933)    (1,547)    (1,505)      (439)       126
Interest expense...........................................        (15)      (447)      (923)      (223)       (50)
Interest income............................................         12         12          2          2         --
                                                             ---------  ---------  ---------  ---------  ---------
      Net income (loss)....................................  $    (936) $  (1,982) $  (2,426) $    (660) $      76
                                                             ---------  ---------  ---------  ---------  ---------
                                                             ---------  ---------  ---------  ---------  ---------
Net income (loss) per share................................  $   (0.08) $   (0.16) $   (0.19) $   (0.05) $    0.01
                                                             ---------  ---------  ---------  ---------  ---------
                                                             ---------  ---------  ---------  ---------  ---------
Shares used in per share calculation.......................     11,676     12,526     12,765     12,765     14,863
                                                             ---------  ---------  ---------  ---------  ---------
                                                             ---------  ---------  ---------  ---------  ---------
</TABLE>
 
   The accompanying notes are an integral part of these financial statements
 
                                      F-4
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
                  STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT)
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                   NOTES
                                                             COMMON STOCK       RECEIVABLE
                                                         --------------------   FOR COMMON    ACCUMULATED
                                                          SHARES     AMOUNT        STOCK        DEFICIT       TOTAL
                                                         ---------  ---------  -------------  ------------  ---------
<S>                                                      <C>        <C>        <C>            <C>           <C>
Balances, January 1, 1993..............................      8,549  $     743                  $     (671)  $      72
  Issuance of common stock for cash less issuance costs
   of $124.............................................      1,337      1,869                      --           1,869
  Issuance of warrants.................................     --              6                      --               6
  Issuance of common stock for cash upon exercise of
   options.............................................          3     --                          --          --
  Net loss.............................................     --         --                            (936)       (936)
                                                         ---------  ---------  -------------  ------------  ---------
Balances, December 31, 1993............................      9,889      2,618                      (1,607)      1,011
  Issuance of common stock.............................        580        822                      --             822
  Issuance of warrants.................................     --             10                      --              10
  Net loss.............................................     --         --                          (1,982)     (1,982)
                                                         ---------  ---------  -------------  ------------  ---------
Balances, December 31, 1994............................     10,469      3,450                      (3,589)       (139)
  Issuance of common stock.............................        741      1,235    $    (104)        --           1,131
  Issuance of warrants.................................     --              5                      --               5
  Net loss.............................................     --         --                          (2,426)     (2,426)
                                                         ---------  ---------  -------------  ------------  ---------
Balances, December 31, 1995............................     11,210      4,690         (104)        (6,015)     (1,429)
  Issuance of common stock.............................        472      1,967                      --           1,967
  Payment on notes receivable..........................                                104                        104
  Issuance of warrants.................................     --              2                      --               2
  Net income...........................................     --         --                              76          76
                                                         ---------  ---------  -------------  ------------  ---------
Balances, March 31, 1996 (unaudited)...................     11,682  $   6,659    $  --         $   (5,939)  $     720
                                                         ---------  ---------  -------------  ------------  ---------
                                                         ---------  ---------  -------------  ------------  ---------
</TABLE>
 
   The accompanying notes are an integral part of these financial statements
 
                                      F-5
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
                            STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                   THREE MONTHS ENDED
                                                                     YEAR ENDED DECEMBER 31,           MARCH 31,
                                                                 -------------------------------  --------------------
                                                                   1993       1994       1995       1995       1996
                                                                 ---------  ---------  ---------  ---------  ---------
                                                                                                      (UNAUDITED)
<S>                                                              <C>        <C>        <C>        <C>        <C>
Cash flows from operating activities:
  Net income (loss)............................................  $    (936) $  (1,982) $  (2,426) $    (660) $      76
  Adjustments to reconcile net income (loss) to net cash used
   in operating activities:
    Depreciation and amortization..............................         57         11         72         13         29
    Amortization of discount and financing costs...............     --            338        607        166     --
    Provision for doubtful accounts............................          9         55         40        (18)        34
    Changes in operating assets and liabilities:
      (Increase) decrease in accounts receivable...............        (29)      (247)      (191)        78       (942)
      (Increase) decrease in inventories.......................       (741)      (486)       163        (79)        58
      (Increase) decrease in other assets......................          9       (202)       349        211        (76)
      Increase (decrease) in accounts payable..................         (1)       418        266        181         16
      Increase (decrease) in accrued liabilities...............         28        144         (4)       (29)       128
      Increase (decrease) in customer deposits.................     --            224         46       (100)        56
                                                                 ---------  ---------  ---------  ---------  ---------
        Net cash used in operating activities..................     (1,604)    (1,727)    (1,078)      (237)      (621)
                                                                 ---------  ---------  ---------  ---------  ---------
Cash flows from investing activities:
  Acquisition of property and equipment........................        (64)       (16)       (62)        (7)       (35)
  Issuance of note receivable..................................        (50)    --         --         --         --
                                                                 ---------  ---------  ---------  ---------  ---------
        Net cash used in investing activities..................       (114)       (16)       (62)        (7)       (35)
                                                                 ---------  ---------  ---------  ---------  ---------
Cash flows from financing activities:
  Payments on capital lease obligations........................        (10)        (2)    --         --         --
  Payments on short-term borrowings............................       (119)    --           (782)    --            (34)
  Net proceeds from issuance of common stock and warrants......      1,875         22      1,136     --          1,969
  Proceeds from short-term borrowings..........................     --         --            827        154     --
  Payments on long-term debt...................................     --         --            (50)    --           (125)
  Proceeds from issuance of long term debt.....................     --          1,724     --             50     --
                                                                 ---------  ---------  ---------  ---------  ---------
        Net cash provided by financing activities..............      1,746      1,744      1,131        204      1,810
                                                                 ---------  ---------  ---------  ---------  ---------
          Net increase (decrease) in cash and cash
           equivalents.........................................         28          1         (9)       (40)     1,154
Cash and cash equivalents at beginning of period...............        103        131        132        132        123
                                                                 ---------  ---------  ---------  ---------  ---------
Cash and cash equivalents at end of period.....................  $     131  $     132  $     123  $      92  $   1,277
                                                                 ---------  ---------  ---------  ---------  ---------
                                                                 ---------  ---------  ---------  ---------  ---------
Supplemental schedule of cash flow information:
  Interest paid................................................  $      15  $       9  $      71  $       3  $      35
  Taxes paid...................................................  $       3  $       1  $       1  $  --      $       1
Supplemental schedule of noncash financing activities:
  Issuance of common stock in connection with notes payable....  $  --      $     811  $  --      $  --      $  --
                                                                 ---------  ---------  ---------  ---------  ---------
                                                                 ---------  ---------  ---------  ---------  ---------
  Issuance of common stock and warrants in exchange for note
   receivable..................................................  $  --      $  --      $     104  $  --      $  --
                                                                 ---------  ---------  ---------  ---------  ---------
                                                                 ---------  ---------  ---------  ---------  ---------
  Acquisition of equipment under capital lease.................  $  --      $  --      $  --      $  --      $      30
                                                                 ---------  ---------  ---------  ---------  ---------
                                                                 ---------  ---------  ---------  ---------  ---------
</TABLE>
 
   The accompanying notes are an integral part of these financial statements
 
                                      F-6
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                         NOTES TO FINANCIAL STATEMENTS
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
1.  NATURE OF OPERATIONS:
    Eclipse  Surgical Technologies,  Inc. (the Company)  was founded  in 1989 to
develop,  manufacture  and  market  surgical  lasers  and  accessories  for  the
treatment  of disease. Currently,  the Company's emphasis  is on development and
manufacture of  products used  for  transmyocardial revascularization  (TMR),  a
cardiovascular procedure.
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:
 
    USE OF ESTIMATES:
 
    The  preparation  of  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 period. Actual results could differ from those estimates.
 
    CASH AND CASH EQUIVALENTS:
 
    All highly liquid instruments purchased  with an original maturity of  three
months or less are considered cash equivalents.
 
    INVENTORIES:
 
    Inventories  are stated  at the  lower of  cost (principally  standard cost,
which approximates actual cost on a first-in, first-out basis) or market value.
 
    FAIR VALUE OF FINANCIAL INSTRUMENTS:
 
    Carrying amounts of certain of the Company's financial instruments including
cash and  cash  equivalents,  accounts  receivable,  accounts  payable,  accrued
liabilities  and customer  deposits approximate  fair value  due to  their short
maturities. Based  on borrowing  rates currently  available to  the Company  for
loans  with similar terms, the carrying  value of the long-term debt obligations
also approximates fair value.
 
    CERTAIN RISKS AND CONCENTRATIONS:
 
    The Company maintains  its excess  cash balance in  a major  U.S. bank.  The
Company  has  not  experienced any  losses  on  its deposits  of  cash  and cash
equivalents.
 
    The Company sells its products primarily to hospitals and other health  care
providers in North America, Europe and Asia. The Company performs ongoing credit
evaluations of its customers and generally does not require collateral. Although
the Company maintains allowances for potential credit losses that it believes to
be  adequate,  a payment  default  on a  significant  sale could  materially and
adversely affect its operating results and financial condition.
 
    REVENUE RECOGNITION:
 
    The Company  typically recognizes  product sales  upon receipt  of  purchase
order  and subsequent shipment of product. Where purchase orders allow customers
an acceptance period, revenue is recognized upon acceptance.
 
    RESEARCH AND DEVELOPMENT:
 
    Research and development expenses are charged to operations as incurred.
 
    DEPRECIATION AND AMORTIZATION:
 
    Property and equipment are stated at cost and depreciated on a straight-line
basis over their estimated useful lives of three to five years. Assets  acquired
under    capital   leases   are   amortized    over   the   shorter   of   their
 
                                      F-7
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, CONTINUED:
estimated useful lives or the term of the related lease (generally three to five
years). Amortization of  leasehold improvements  is based  on the  straight-line
method over the shorter of the estimated useful life or the lease term.
 
    WARRANTIES:
 
    The  Company's  laser products  are generally  warranted  for one  year. The
Company provides for estimated future costs of repair, replacement, or  customer
accommodations which are reflected in the accompanying financial statements.
 
    INCOME TAXES:
 
    The Company accounts for income taxes using the liability method under which
deferred  tax assets  or liabilities  are calculated  at the  balance sheet date
using current tax laws and rates in effect for the year in which the differences
are expected to  affect taxable  income. Valuation  allowances are  established,
when  necessary, to  reduce deferred  tax assets to  the amounts  expected to be
realized.
 
    NET INCOME (LOSS) PER SHARE:
 
    Net income (loss) per share is computed using the weighted average number of
shares of common stock  outstanding and common  stock equivalent shares.  Common
stock  equivalent shares  are included in  the per share  calculations where the
effect of their inclusion  would be dilutive.  Dilutive common stock  equivalent
shares consist of stock options and warrants (using the treasury stock method in
all  periods presented).  Pursuant to  Securities and  Exchange Commission Staff
Accounting Bulletin No. 83, common and common stock equivalent shares issued  by
the  Company during the twelve months preceding the initial offering date, using
the treasury stock method and the assumed public offering price per share,  have
been  included in the calculation of net income (loss) per share for all periods
presented.
 
    RECENT PRONOUNCEMENTS:
 
    During  October  1995,  the  Financial  Accounting  Standards  Board  issued
Statement No. 123 (SFAS No. 123) "Accounting for Stock-Based Compensation" which
establishes a fair value based method of accounting for stock-based compensation
plans  and requires additional disclosures for  those companies who elect not to
adopt the  new method  of accounting.  The Company  is currently  following  the
requirements  of APB Opinion  No. 25 "Accounting for  Stock Issued to Employees"
and  plans  to  adopt  SFAS  No.  123  during  1996  utilizing  the   disclosure
alternative.
 
    INTERIM FINANCIAL INFORMATION (UNAUDITED):
 
    The  financial statements and related notes as of March 31, 1996 and for the
three months ended March 31, 1995 and 1996 have been prepared on the same  basis
as  the audited financial statements and,  in the opinion of management, include
all adjustments, consisting only of normal recurring adjustments, necessary  for
a  fair  presentation of  the financial  position and  results of  operations in
accordance with generally accepted accounting principles for the interim period.
Results for interim  periods are  not necessarily  indicative of  results to  be
expected for the full fiscal year.
 
                                      F-8
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
3.  INVENTORIES:
    Inventories consist of the following (IN THOUSANDS):
 
<TABLE>
<CAPTION>
                                                                   DECEMBER 31,
                                                               --------------------
                                                                 1994       1995
                                                               ---------  ---------   MARCH 31,
                                                                                        1996
                                                                                     -----------
                                                                                     (UNAUDITED)
<S>                                                            <C>        <C>        <C>
Raw materials................................................  $     221  $     287   $     156
Work in process..............................................        330        351         362
Finished goods...............................................      1,282      1,032       1,094
                                                               ---------  ---------  -----------
                                                               $   1,833  $   1,670   $   1,612
                                                               ---------  ---------  -----------
                                                               ---------  ---------  -----------
</TABLE>
 
4.  OTHER CURRENT ASSETS:
    Other current assets consists of the following (IN THOUSANDS):
 
<TABLE>
<CAPTION>
                                                                       DECEMBER 31,
                                                                   --------------------
                                                                     1994       1995
                                                                   ---------  ---------     MARCH 31,
                                                                                              1996
                                                                                         ---------------
                                                                                           (UNAUDITED)
<S>                                                                <C>        <C>        <C>
Prepaid expenses.................................................  $  --      $  --         $      59
Receivable from related party....................................        252         14            16
Other............................................................        111     --            --
                                                                   ---------  ---------           ---
                                                                   $     363  $      14     $      75
                                                                   ---------  ---------           ---
                                                                   ---------  ---------           ---
</TABLE>
 
5.  PROPERTY AND EQUIPMENT:
    Property and equipment consists of the following (IN THOUSANDS):
 
<TABLE>
<CAPTION>
                                                                     DECEMBER 31,
                                                                 --------------------
                                                                   1994       1995
                                                                 ---------  ---------    MARCH 31,
                                                                                           1996
                                                                                       -------------
                                                                                        (UNAUDITED)
<S>                                                              <C>        <C>        <C>
Computers and equipment........................................  $     129  $     142    $     207
Manufacturing and demonstration equipment......................        152        196          196
Leasehold improvements.........................................         23         28           28
                                                                 ---------  ---------        -----
                                                                       304        366          431
Less accumulated depreciation and amortization.................       (196)      (268)        (296)
                                                                 ---------  ---------        -----
                                                                 $     108  $      98    $     135
                                                                 ---------  ---------        -----
                                                                 ---------  ---------        -----
</TABLE>
 
    Property  and equipment includes  equipment under capital  leases as follows
(IN THOUSANDS):
 
<TABLE>
<CAPTION>
                                                                       DECEMBER 31,
                                                                   --------------------
                                                                     1994       1995
                                                                   ---------  ---------    MARCH 31,
                                                                                             1996
                                                                                         -------------
                                                                                          (UNAUDITED)
<S>                                                                <C>        <C>        <C>
Cost.............................................................  $      42  $      42    $      72
Less accumulated amortization....................................        (42)       (42)         (42)
                                                                   ---------  ---------        -----
                                                                   $  --      $  --      $        30
                                                                   ---------  ---------        -----
                                                                   ---------  ---------        -----
</TABLE>
 
                                      F-9
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
6.  ACCRUED LIABILITIES:
    Accrued liabilities consists of the following (IN THOUSANDS):
 
<TABLE>
<CAPTION>
                                                                       DECEMBER 31,
                                                                   --------------------
                                                                     1994       1995
                                                                   ---------  ---------    MARCH 31,
                                                                                             1996
                                                                                         -------------
                                                                                          (UNAUDITED)
<S>                                                                <C>        <C>        <C>
Accrued commissions payable......................................  $      47  $     120    $     200
Accrued warranty.................................................         30         60           65
Accrued interest.................................................        104        249          262
Other............................................................        370        118          159
                                                                   ---------  ---------        -----
                                                                   $     551  $     547    $     686
                                                                   ---------  ---------        -----
                                                                   ---------  ---------        -----
</TABLE>
 
7.  SHORT-TERM BORROWINGS:
    In April 1995,  the Company  entered into a  note payable  with a  financing
company  for  $50,000,  with interest  at  2%  per month  on  the  average daily
outstanding balance. Principal and interest payments are due monthly  commencing
in  May 1995 and terminating  in August 1995. In  July 1995, the Company amended
the note which resulted in renewing the terms through March 28, 1996. The  total
balance outstanding on December 31, 1995 is $39,375.
 
    In  March 1995, the  Company entered into a  factoring agreement that allows
for borrowings  up  to  80%  of eligible  accounts  receivable,  not  to  exceed
$400,000.  The factoring agreement is collateralized by substantially all of the
assets of  the Company.  Interest at  2% per  month on  the average  outstanding
balance  is charged  monthly. Payments  are made against  the line  of credit by
applying payments from the accounts receivable that have been collateralized  to
the  outstanding balance. During  the year ended December  31, 1995, the maximum
amount drawn  against the  line  was $201,158.  The  balance outstanding  as  of
December 31, 1995 and March 31, 1996 was $5,752 and none, respectively.
 
    In February 1995, the Company entered into a note payable with a distributor
for  $50,000 at 8% interest per annum.  Principal and interest were paid in full
in December 1995.
 
8.  LONG-TERM DEBT:
    Debt consists of the following (IN THOUSANDS):
 
<TABLE>
<CAPTION>
                                                                   DECEMBER 31,
                                                               --------------------
                                                                 1994       1995
                                                               ---------  ---------   MARCH 31,
                                                                                        1996
                                                                                     -----------
                                                                                     (UNAUDITED)
<S>                                                            <C>        <C>        <C>
Notes payable................................................  $   1,859  $   1,809   $   1,684
Capital lease obligations....................................     --         --              30
                                                               ---------  ---------  -----------
                                                                   1,859      1,809       1,714
Less unamortized discount on notes payable...................       (524)    --          --
                                                               ---------  ---------  -----------
Total debt...................................................      1,335      1,809       1,714
Less current portion.........................................       (326)    (1,809)     (1,691)
                                                               ---------  ---------  -----------
                                                               $   1,009  $  --       $      23
                                                               ---------  ---------  -----------
                                                               ---------  ---------  -----------
</TABLE>
 
    The Company  leases certain  office equipment  under a  capital lease  which
expires in January 2001.
 
                                      F-10
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
8.  LONG-TERM DEBT, CONTINUED:
    During February through June 1994, the Company entered into promissory notes
for  $1,008,974. The notes  bear interest at  6% per annum  and the maturity has
been extended through  December 31, 1996.  In connection with  these notes,  the
Company  issued warrants to the debt holders to purchase an aggregate of 177,996
shares of common stock at $2.15 per share. The warrants expire in 1999.
 
    During May  through July  1994, the  Company entered  into promissory  notes
totaling  $798,738. The promissory notes comprised units, each of which includes
a $50,000 note  payable bearing  interest at 10%  due in  November 1995;  33,333
shares  of common stock  and 33,333 warrants  at an exercise  price of $1.67 per
share. In addition, a $50,000 loan entered  into in January 1994, with a  member
of  the Company's Board of  Directors, was converted into  a unit with a $50,000
note payable, 33,333 shares of common stock and 33,333 warrants.
 
    The shares and warrants issued in connection with the promissory notes  were
determined  to have a fair  market value of $811,006,  which has been charged to
discount on  notes payable.  The discount  has  been amortized  as a  charge  to
interest  expense on a straight  line basis over a  17-month term. For the years
ended December  31, 1994  and 1995,  the Company  recorded interest  expense  of
$286,237 and $524,769, respectively.
 
    Costs  associated with promissory notes issued  by the Company in the amount
of $135,000 were  also amortized to  interest expense on  a straight line  basis
over  the 17 month term of the notes.  For the years ended December 31, 1994 and
1995, $52,000 and $83,000 of these  costs had been charged to interest  expense,
respectively.
 
    In March 1996, the Company issued warrants at an exercise price of $4.17 per
share  to  note holders  who  agreed to  extend the  term  of the  notes through
December 31, 1996. A total  of 46,884 warrants were  issued. At March 31,  1996,
$375,000 of the notes were in default as the holders did not accept these terms.
 
9.  COMMITMENTS AND CONTINGENCIES:
    The Company entered into a lease agreement for office facilities in February
1992. It was amended in November 1994 to include additional space for a total of
approximately  17,700 square  feet, and to  extend the lease  term through March
1998. The minimum future rental payments are (in thousands):
 
<TABLE>
<CAPTION>
YEAR ENDED DECEMBER 31,
- - ------------------------------------------------------------------
<S>                                                                 <C>
1996..............................................................  $     138
1997..............................................................        154
1998..............................................................         40
</TABLE>
 
    Rent expense was approximately $66,000,  $92,000 and $139,000 for the  years
ended  December 31, 1993,  1994 and 1995, respectively,  and $36,000 and $35,000
for the three month periods ended March 31, 1995 and 1996, respectively.
 
    The Company  is  engaged in  certain  legal and  administrative  proceedings
incidental  to  its normal  business  activities. While  it  is not  possible to
determine the  ultimate  outcome  of  these actions  at  this  time,  management
believes  that any liabilities resulting from  such proceedings, or claims which
are pending or known to be threatened,  will not have a material adverse  effect
on the Company's financial position or results of operations.
 
                                      F-11
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
10. SHAREHOLDERS' EQUITY:
 
    COMMON STOCK:
 
    Under  certain  circumstances, the  Company has  right  of first  refusal to
purchase common stock from selling shareholders.
 
    In April  1996, the  Board  of Directors  authorized a  three-for-one  stock
split.  Management has retroactively  applied the effect of  the stock split for
all periods presented.
 
    WARRANTS:
 
    At December  31, 1995,  warrants were  outstanding to  purchase a  total  of
1,124,754 shares of common stock at exercise prices ranging from $1.67 to $2.15.
The  warrants,  which were  issued in  connection with  various debt  and equity
financings, are exercisable and terminate upon  the earlier of eleven months  to
five  years  from  the  effective  grant  date,  a  merger  or  sale  of  all or
substantially all of the Company's assets to a noncontrolling entity, or certain
other conditions. At December  31, 1995, the Company  had reserved for  issuance
under  these warrants 1,124,754  shares of common stock.  During the years ended
December 31, 1994 and 1995 and the  three month period ended March 31, 1996,  no
warrants were exercised.
 
    STOCK OPTION PLAN:
 
    In  January 1991 and as amended in October 1991 and August 1994, the Company
adopted the Dual Stock  Option Plan, which includes  the Employee Program  under
which  incentive and  nonstatutory options may  be granted to  employees and the
Consultants  Program,  under  which  nonstatutory  options  may  be  granted  to
consultants  of the Company. As of March  31, 1996, the Company had reserved for
issuance under this plan a total of 3,000,000 shares of common stock. Under  the
plan,  options may  be granted at  prices not less  than 85% of  the fair market
value at the  date of  grant for  nonstatutory options  and not  less than  fair
market  value  for incentive  options  (110% of  fair  market value  for options
granted to 10% shareholders), as determined by the Board of Directors. Under the
Dual Stock Option Plan, options generally vest over a period of three years  and
expire  ten years  from date  of grant  (five years  for options  granted to 10%
shareholders). No shares of  common stock issued under  the plan are subject  to
repurchase.
 
    DIRECTOR STOCK OPTION PLAN:
 
    In  August 1994, the  Company adopted the Directors  Stock Option Plan which
provides for the grant of nonstatutory options to directors who are not officers
or employees of the Company. As of March 31, 1996, the Company had reserved  for
issuance  under  this plan  450,000  shares of  common  stock. Under  this plan,
options are granted  at the trading  price of the  common stock at  the date  of
grant.  Options generally vest over twelve months and expire ten years from date
of grant.  No shares  of  common stock  issued under  the  plan are  subject  to
repurchase.
 
                                      F-12
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
10. SHAREHOLDERS' EQUITY, CONTINUED:
    Option  activity under  both plans is  as follows (IN  THOUSANDS, EXCEPT PER
SHARE AMOUNTS):
 
<TABLE>
<CAPTION>
                                                                         OUTSTANDING OPTIONS
                                                     SHARES     -------------------------------------
                                                    AVAILABLE    NUMBER OF     PRICE PER
                                                    FOR GRANT     SHARES         SHARE        TOTAL
                                                   -----------  -----------  -------------  ---------
<S>                                                <C>          <C>          <C>            <C>
Balance, January 1, 1993.........................         256          507    $0.02-$2.15   $     349
  Options granted................................        (140)         140    $1.43-$2.15         259
  Options exercised..............................      --               (3)      $0.02         --
  Options canceled...............................          29          (29)   $1.43-$2.15         (63)
                                                   -----------       -----                  ---------
Balance, December 31, 1993.......................         145          615    $0.02-$2.15         545
  Shares reserved................................       1,482       --                         --
  Options granted................................        (670)         670       $1.43            960
  Options canceled...............................          49          (49)   $1.43-$2.15         (71)
                                                   -----------       -----                  ---------
Balance, December 31, 1994.......................       1,006        1,236    $0.02-$2.15       1,434
  Shares reserved................................       1,200       --                         --
  Options granted................................      (1,308)       1,308       $1.67          2,180
  Options canceled...............................           4           (4)   $1.43-$2.15          (6)
                                                   -----------       -----                  ---------
Balance, December 31, 1995.......................         902        2,540    $0.02-$2.15       3,608
  Options granted................................        (112)         112       $4.17            466
                                                   -----------       -----                  ---------
Balances, March 31, 1996 (UNAUDITED).............         790        2,652    $0.02-$4.17   $   4,074
                                                   -----------       -----                  ---------
                                                   -----------       -----                  ---------
</TABLE>
 
    At December 31, 1995, options to  purchase 1,241,646 shares of common  stock
were exercisable.
 
11. INCOME TAXES:
    The components of the net deferred tax asset were as follows (IN THOUSANDS):
 
<TABLE>
<CAPTION>
                                                                               DECEMBER 31,
                                                                           --------------------
                                                                             1994       1995
                                                                           ---------  ---------
<S>                                                                        <C>        <C>
Net operating losses.....................................................  $   1,323  $   1,639
Research and development credits.........................................        247        291
Reserves.................................................................         31         75
Accrued liabilities......................................................         30         62
                                                                           ---------  ---------
      Net deferred asset.................................................      1,631      2,067
Less valuation allowance.................................................     (1,631)    (2,067)
                                                                           ---------  ---------
                                                                           $  --      $  --
                                                                           ---------  ---------
                                                                           ---------  ---------
</TABLE>
 
    The  Company  has established  a valuation  allowance to  the extent  of its
deferred tax asset since it is not certain that a benefit can be realized in the
future due to the Company's recurring operating losses.
 
    The change in the valuation  allowance was $523,000, $828,000, and  $436,000
in 1993, 1994, and 1995, respectively.
 
    The  noncurrent portion of the deferred tax assets, which totaled $1,570,000
and $1,930,000 at December 31, 1994 and 1995, respectively, are included above.
 
    At December 31, 1995, the Company  had federal and state net operating  loss
carryforwards   of  approximately   $4,300,000  and   $2,700,000,  respectively,
available to offset future regular and alternative minimum
 
                                      F-13
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
11. INCOME TAXES, CONTINUED:
taxable income. In  addition, the  Company had  federal and  state research  and
development credit carryforwards of approximately $205,000 and $86,000 available
to   offset   future  tax   liabilities.  The   Company's  net   operating  loss
carryforwards, as well as credit carryforwards, expire in 2002 through 2010,  if
not utilized.
 
    The  Tax Reform  Act of 1986  limits the use  of net operating  loss and tax
credit carryforwards  in certain  situations where  changes occur  in the  stock
ownership  of a company.The  Company believes that  the sale of  common stock in
this public offering  (see Note  14) will result  in an  ownership change  which
could restrict the utilization of the carryforwards.
 
12. MAJOR CUSTOMERS:
    In  1993 sales to one  customer amounted to 11.9%  of net revenues. In 1994,
there were no sales to  one customer which amounted to  greater than 10% of  net
revenues.  Sales to two customers amounted to  10% each of net revenues in 1995.
For the three months ended March 31,  1995 sales to three customers amounted  to
13%,  16%, and 23% of  net revenues. For the three  months ended March 31, 1996,
sales to three  different customers amounted  to 17% of  net revenues each,  and
sales to one additional customer amounted to 26% of net revenues.
 
    Export  sales accounted for  approximately 3.2%, 16.9% and  20% of net sales
for the years  ended December  31, 1993, 1994  and 1995,  respectively. For  the
three  months  ended  March  31,  1995  and  1996,  export  sales  accounted for
approximately 41% and 8% of net sales, respectively.
 
13. RELATED PARTY TRANSACTIONS:
    In 1993,  the  Company decided  not  to  pursue an  opportunity  to  design,
manufacture  and distribute low price balloon angioplasty catheters. The Company
therefore caused the  formation of Atlantis  Catheter Company, Inc.  (Atlantis).
The  Company purchased 500,000  shares of Atlantis common  stock and warrants to
purchase 4,500,000 additional  shares of common  stock for a  total of  $14,500.
These  shares and warrants  were distributed to the  Company's shareholders as a
dividend in  1994,  causing the  Company's  president to  become  the  principal
beneficial shareholder of Atlantis. The president is also an outside director of
Atlantis.  At  December 31,  1995, 51.1%  of  Atlantis shares  were held  by the
Company's shareholders.
 
    During  1994,  the  Company  advanced  Atlantis  a  total  of  $629,017  for
facilities  and  other operating  expenses. The  advanced funds  were reimbursed
periodically by  Atlantis, with  a total  $251,962 outstanding  at December  31,
1994, and $14,000 outstanding at December 31, 1995. As of December 31, 1995, the
funds  advanced  by the  Company  to Atlantis  pertain  only to  rent  and other
facilities charges generated by the shared facilities of the two companies.
 
    In February 1996, Atlantis was acquired by Biocompatibles International  plc
(Biocompatibles),  a publicly traded company, at which time Eclipse shareholders
held less than 5% of Biocompatible's outstanding common stock.
 
    During 1995, the Company borrowed an aggregate of $100,000 from one director
pursuant to notes payable  bearing interest at 10%  per annum. These notes  were
repaid in full during the year.
 
14. SUBSEQUENT EVENTS (UNAUDITED):
    In  April 1996, the Board of Directors approved the filing of a registration
statement by the Company with  the SEC covering the  proposed sale of shares  of
its common stock to the public (the Offering).
 
    In April 1996, the Board of Directors approved the following:
 
    1.     Amendments  to  the  Company's   Amended  and  Restated  Articles  of
       Incorporation to  increase the  authorized shares  of Common  Stock  from
       45,000,000    to   50,000,000   and    effect   a   three-for-one   stock
 
                                      F-14
<PAGE>
                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                    (INFORMATION FOR THE THREE MONTHS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
14. SUBSEQUENT EVENTS (UNAUDITED):, continued:
       split of the outstanding Common  Stock. All common and common  equivalent
       shares  and per  share amounts  in these  financial statements  have been
       adjusted retroactively to give effect to the stock split
 
    2.  The  amendment and  restatement of the  Company's Stock  Option Plan  to
       increase  the aggregate  number of  shares of  Common Stock  reserved for
       issuance under the Plan  to 4,000,000 shares  (post-split) and to  extend
       the term of the Plan through March 2006.
 
    3.   The  amendment and restatement  of the Company's  Director Stock Option
       Plan to decrease the aggregate number of shares of Common Stock  reserved
       for  issuance under the Plan to 200,000 shares (post-split) and to extend
       the term of the Plan through March 2006.
 
    4.  The adoption of a 1996 Employee Stock Purchase Plan upon the closing  of
       the  Company's initial public offering and  the reservation of a total of
       250,000 shares of the  Company's Common Stock.  Under the purchase  plan,
       employees  may purchase  Common Stock  at the  lower of  85% of  the fair
       market value of the Common Stock at the beginning or end of each offering
       period.
 
                                      F-15
<PAGE>
 
<TABLE>
  <C>                   <S>
                        The Eclipse TMR 2000 system generates laser light of a
     [Photograph of     2-micron wavelength by photoelectric excitation of a
    Eclipse TMR 2000    solid state holmium crystal. The holmium laser is
    system and nurse]   compact, reliable and has low maintenance requirements.
</TABLE>
 
<TABLE>
<S>                                     <C>
[Photograph of slender optical fiber]        [Photograph of surgical tools]
 
Flexible, lightweight and slender       The Company offers a broad range of
optical fibers shown above are used to  surgical tool options for the individual
deliver the laser energy to the         tactile preferences of the surgeon and
patient. Eclipse TMR products are       solutions for the different geometry of
designed to give the surgeon access to  each patient's heart cavity.
difficult to reach areas and greater
visualization of the surgical field.
</TABLE>
 
<PAGE>
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    NO  PERSON  HAS BEEN  AUTHORIZED  TO GIVE  ANY  INFORMATION OR  TO  MAKE ANY
REPRESENTATIONS IN CONNECTION WITH  THE OFFERING OTHER  THAN THOSE CONTAINED  IN
THIS   PROSPECTUS  AND,   IF  GIVEN   OR  MADE,   SUCH  OTHER   INFORMATION  AND
REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY
OR THE UNDERWRITERS. NEITHER THE DELIVERY  OF THIS PROSPECTUS NOR ANY SALE  MADE
HEREUNDER  SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS
BEEN NO CHANGE IN THE AFFAIRS OF THE  COMPANY SINCE THE DATE HEREOF OR THAT  THE
INFORMATION  CONTAINED HEREIN IS CORRECT AS OF  ANY TIME SUBSEQUENT TO ITS DATE.
THIS   PROSPECTUS    DOES    NOT    CONSTITUTE   AN    OFFER    TO    SELL    OR
A  SOLICITATION OF  AN OFFER  TO BUY  ANY SECURITIES  OTHER THAN  THE REGISTERED
SECURITIES TO WHICH IT RELATES. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER  TO
SELL  OR A SOLICITATION OF AN OFFER  TO BUY SUCH SECURITIES IN ANY CIRCUMSTANCES
IN WHICH SUCH OFFER OR SOLICITATION IS UNLAWFUL.
 
                              -------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Prospectus Summary........................................................    3
Risk Factors..............................................................    6
Use of Proceeds...........................................................   14
Dividend Policy...........................................................   14
Capitalization............................................................   15
Dilution..................................................................   16
Selected Financial Data...................................................   17
Management's Discussion and Analysis of Financial Condition and Results of
 Operations...............................................................   18
Business..................................................................   21
Management................................................................   34
Certain Transactions......................................................   41
Principal Shareholders....................................................   42
Description of Capital Stock..............................................   43
Shares Eligible for Future Sale...........................................   45
Underwriting..............................................................   46
Legal Matters.............................................................   48
Experts...................................................................   48
Additional Information....................................................   48
Index to Financial Statements.............................................  F-1
</TABLE>
 
                              -------------------
 
    UNTIL JUNE 25, 1996,  ALL DEALERS EFFECTING  TRANSACTIONS IN THE  REGISTERED
SECURITIES,  WHETHER OR NOT PARTICIPATING IN  THIS DISTRIBUTION, MAY BE REQUIRED
TO DELIVER A PROSPECTUS.  THIS IS IN  ADDITION TO THE  OBLIGATION OF DEALERS  TO
DELIVER  A  PROSPECTUS WHEN  ACTING AS  UNDERWRITERS AND  WITH RESPECT  TO THEIR
UNSOLD ALLOTMENTS OR SUBSCRIPTIONS.
 
                                4,000,000 SHARES
 
                                     [LOGO]
 
                                ECLIPSE SURGICAL
                               TECHNOLOGIES, INC.
 
                                  COMMON STOCK
 
                               -----------------
 
                              P R O S P E C T U S
                               -----------------
 
                            PAINEWEBBER INCORPORATED
                            DEUTSCHE MORGAN GRENFELL
                           JEFFERIES & COMPANY, INC.
 
                                  ------------
 
                                  MAY 31, 1996
 
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