PLC SYSTEMS INC
S-3, 1998-12-15
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 14, 1998
                              REGISTRATION NO. 333-
- ------------------------------------------------------------------------------
- ------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                      ------------------------------------



                                    FORM S-3
                             REGISTRATION STATEMENT

                                      UNDER

                           THE SECURITIES ACT OF 1933

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


                                PLC SYSTEMS INC.
             (Exact name of registrant as specified in its charter)

       BRITISH COLUMBIA                        04-3153858
(State or other jurisdiction of             (I.R.S. Employer
incorporation or organization)             Identification No.)

                              JENNIFER MILLER, ESQ.
                                PLC SYSTEMS INC.
                                  10 FORGE PARK
                          FRANKLIN, MASSACHUSETTS 02038
                                 (508) 541-8800
                      ------------------------------------

(Address, including zip code, and telephone number, including area code, of
registrant's principal executive offices)

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


                                    COPY TO:

                                STEVEN S. SIEGEL
                   BROWNSTEIN HYATT FARBER & STRICKLAND, P.C.
                       410 SEVENTEENTH STREET, 22ND FLOOR
                             DENVER, COLORADO 80202
                                 (303) 534-6335

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

Approximate date of commencement of proposed sale to public: as soon as
practicable after the Registration Statement becomes effective.

If the only securities being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box. [ ]

If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [X]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and list
the Securities Act registration statement number of the earliest effective
registration statement for the same offering. [ ]

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]

If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]

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

                      CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
Title of each class of         Proposed maximum                 Amount of
     securities            aggregate offering price          Registration Fee
- --------------------------------------------------------------------------------
<S>                        <C>                               <C>
Common Stock, no par            $12,000,000 (1)                 $3,336.00(1)
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
</TABLE>

(1)     The maximum aggregate offering price of the Common Stock registered
        hereunder will not exceed $12,000,000. Pursuant to Rule 457(o), the
        registration fee is calculated on the aggregate maximum offering price
        of the Common Stock, and the table does not specify information about
        the amount of shares to be registered or the proposed maximum offering
        price per share.

The Registrant hereby amends this Registration Statement on such date or dates
as may be necessary to delay its effective date until the Registrant shall file
a further amendment which specifically states that this Registration Statement
will thereafter become effective in accordance with Section 8(a) of the
Securities Act of 1933 or until the Registration Statement shall become
effective on such date as the Securities and Exchange Commission, acting
pursuant to said Section 8(a), may determine.


<PAGE>

THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY
NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER
TO SELL THESE SECURITIES AND IT IS NOT SOLICITING AN OFFER TO BUY THESE
SECURITIES IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.

                                   PROSPECTUS

                 SUBJECT TO COMPLETION. DATED DECEMBER 14, 1998.

                                   $12,000,000
                                PLC SYSTEMS INC.

                                  COMMON STOCK

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

     This Prospectus is part of a Registration Statement we filed with the
Securities and Exchange Commission using a "shelf" registration process. This
means:

     *    we may issue up to $12,000,000 of Common Stock from time to time.

     *    we will circulate a Prospectus Supplement each time we issue the
          Common Stock.

     *    the Prospectus Supplement will inform you about the specific terms of
          that offering and also may add, update or change information contained
          in this Prospectus.

     *    you should read this Prospectus and any Prospectus Supplement
          carefully before you invest.

     Our Common Stock is traded on the American Stock Exchange under the symbol
"PLC". On December __, 1998, the last reported sale price for the Common Stock
on the American Stock Exchange was $ ___ per share.

     SEE "RISK FACTORS" BEGINNING ON PAGE 4 TO READ ABOUT CERTAIN FACTORS YOU
SHOULD CONSIDER BEFORE BUYING SHARES OF THE COMMON STOCK.

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

     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY OTHER REGULATORY
BODY HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY
OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.

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

                 The date of this Prospectus is December   , 1998.

<PAGE>


                       WHERE YOU CAN FIND MORE INFORMATION

     We file annual, quarterly and special reports, proxy statements and other
information with the SEC. Our SEC filings are available to the public over the
internet at the SEC's web site at http://www.sec.gov. You may also read and copy
any document we file at the SEC's Public Reference Rooms in Washington, D.C.,
New York, New York and Chicago, Illinois. The Public Reference Room in
Washington, D.C. is located at 450 Fifth Street, N.W. Please call the SEC at
1-800-SEC-0330 for further information on the Public Reference Rooms.

     Our Common Stock is listed on the American Stock Exchange, 86 Trinity
Place, New York, New York 10006. Reports, proxy statements and other information
concerning our Company can be reviewed at the American Stock Exchange.

     The SEC allows us to "incorporate by reference" the information we file
with it, which means that we can disclose important information to you by
referring you to those documents. The information incorporated by reference is
an important part of this Prospectus, and information that we file later with
the SEC will automatically update and supersede this information. We incorporate
by reference the documents listed below and any future filings made with the SEC
under Sections 13(a), 13(c), 14, or 15(d) of the Securities Exchange Act of 1934
until we sell all of the Common Stock:

     *    Annual Report on Form 10-K for the year ended December 31, 1997;

     *    Quarterly Reports on Form 10-Q for the quarters ended March 31, June
          30 and September 30, 1998;

     *    Current Report on Form 8-K, filed August 21, 1998; and

     *    The description of our Common Stock contained in our Registration
          Statement on Form 8-A, filed August 21, 1992, and amended September 11
          and October 19, 1992.

We have also filed a registration statement on Form S-3 (the "Registration
Statement") with the SEC under the Securities Act of 1933. This Prospectus does
not contain all of the information set forth in the Registration Statement. You
should read the Registration Statement for further information about our company
and the Common Stock. You may request a copy of these filings at no cost. Please
direct your requests to:

                           Jennifer Miller, Esq.
                           General Counsel
                           PLC Systems Inc.
                           10 Forge Park
                           Franklin, Massachusetts 02038
                           (508) 541-8800

You may also want to refer to our web site at www.plcmed.com.

     You should rely only on the information incorporated by reference or
provided in this Prospectus or any Prospectus Supplement. We have not authorized
anyone else to provide you with different information. We are not making an
offer of the Common Stock in any state where the offer is not permitted. You
should not assume that the information in this Prospectus or any Prospectus
Supplement is accurate as of any date other than the date on the front page of
those documents.

                    NOTE REGARDING FORWARD-LOOKING STATEMENTS

     This Prospectus contains certain forward-looking statements within the
meaning of Section 27A of the Securities Act of 1933 and Section 21E of the
Securities Exchange Act of 1934. Forward-looking statements deal with our
current plans, intentions, beliefs and expectations and statements of future
economic performance. Statements


                                        2

<PAGE>

containing terms such as "believes," "does not believe," "plans," "expects,"
"intends," "estimates," "anticipates" and other phrases of similar meaning are
considered to contain uncertainty and are forward-looking statements.

     Forward-looking statements involve known and unknown risks and
uncertainties which may cause our actual results in future periods to differ
materially from what is currently anticipated. We make cautionary statements in
certain sections of this Prospectus, including under "Risk Factors." You should
read these cautionary statements as being applicable to all related
forward-looking statements wherever they appear in this Prospectus, in the
materials referred to in this Prospectus, in the materials incorporated by
reference into this Prospectus, or in our press releases.

     No forward-looking statement is a guarantee of future performance and you
should not place undue reliance on any forward-looking statement.

                                PLC SYSTEMS INC.

OUR PRODUCT -- THE HEART LASER SYSTEM

     We develop and market one principal product: a patented high-powered carbon
dioxide laser system known as The Heart Laser-TM- System. The Heart Laser System
is designed for use in the treatment of coronary artery disease in a surgical
laser procedure we pioneered known as transmyocardial revascularization ("TMR").
We believe that TMR using The Heart Laser System:

     *    may be used to treat patients who cannot be helped by conventional
          treatments;

     *    may provide an adjunctive or alternative therapy to conventional
          treatments of coronary artery disease, such as coronary artery bypass
          graft surgery and balloon angioplasty; and

     *    may lead to lower treatment costs, decreased hospital stays, quicker
          recovery, reduced trauma and side effects, and improved quality of
          life.

HOW OUR PRODUCT WORKS

     TMR using The Heart Laser System creates new channels in the heart that 
permit oxygenated blood to flow from the inside of the heart to areas of the 
heart muscle that are not fully functional because of coronary artery 
disease. Through a small incision between a patient's ribs, a heart surgeon 
uses The Heart Laser System to make 20 to 40 tiny channels from the outside 
of the heart muscle into the cavity of the heart holding oxygenated blood. 
Because we designed TMR using The Heart Laser System to be performed on a 
beating heart, it does not require the use of a heart-lung machine or a blood 
transfusion. Furthermore, TMR using The Heart Laser System utilizes patented 
technology to synchronize the firing of the laser with the patient's 
heartbeat. The laser fires when the heart is relatively still, reducing the 
risk of harm that has occurred when TMR is performed without synchronization.

GOVERNMENT APPROVAL

     We first submitted a request for pre-market approval of The Heart Laser 
System to the U.S. Food and Drug Administration (the "FDA") in 1995. In April 
1998, the circulatory systems devices panel of the FDA unanimously 
recommended The Heart Laser System for marketing to patients who suffer from 
severe, stable heart disease and are not amenable to conventional treatments. 
In August 1998, we became the first company to receive FDA approval to market 
a heart laser system for TMR. We have begun marketing The Heart Laser System 
to the estimated 120,000 patients worldwide who suffer from severe heart 
disease but cannot be treated with conventional therapies.

                                        3

<PAGE>

NEED FOR COMMERCIAL ACCEPTANCE

     Over 4,000 patients have been treated with TMR using The Heart Laser System
in the United States and overseas. As of September 30, 1998, we have shipped The
Heart Laser System to 36 sites in the United States and 71 sites overseas.
Although a number of research studies, including one conducted by the Texas
Heart Institute, have reported favorably on The Heart Laser System, we have not
yet received widespread commercial acceptance. Our success depends on our
ability to market The Heart Laser System.

GENERAL

     We incorporated pursuant to the Company Act of British Columbia, Canada on
March 3, 1987. Our principal offices are located at 10 Forge Park, Franklin,
Massachusetts 02038. Our telephone number is (508) 541- 8800. For more
information, please refer to our web site at www.plcmed.com.

                                  RISK FACTORS

     YOU SHOULD CAREFULLY CONSIDER THE RISKS DESCRIBED BELOW BEFORE MAKING AN
INVESTMENT DECISION. THE RISKS AND UNCERTAINTIES DESCRIBED BELOW ARE NOT THE
ONLY ONES FACING OUR COMPANY. ADDITIONAL RISKS AND UNCERTAINTIES NOT PRESENTLY
KNOWN TO US OR THAT WE CURRENTLY DEEM IMMATERIAL MAY ALSO IMPAIR OUR BUSINESS
OPERATIONS.

     IF ANY OF THE FOLLOWING RISKS ACTUALLY OCCURS, OUR BUSINESS, FINANCIAL
CONDITION OR RESULTS OF OPERATIONS COULD BE ADVERSELY AFFECTED. IN SUCH CASE,
THE TRADING PRICE OF OUR COMMON STOCK COULD DECLINE, AND YOU MAY LOSE ALL OR
PART OF YOUR INVESTMENT.

     THIS PROSPECTUS ALSO CONTAINS AND INCORPORATES BY REFERENCE FORWARD-LOOKING
STATEMENTS THAT INVOLVE RISKS AND UNCERTAINTIES. OUR ACTUAL RESULTS COULD DIFFER
MATERIALLY FROM THOSE ANTICIPATED IN THE FORWARD-LOOKING STATEMENTS AS A RESULT
OF CERTAIN FACTORS, INCLUDING THE RISKS DESCRIBED BELOW AND ELSEWHERE IN THIS
PROSPECTUS.

DEVELOPMENT STAGE COMPANY WITH A LIMITED OPERATING HISTORY

     PLC Systems Inc. was founded in 1987 and is still in the development stage.
We have incurred operating losses in every year of our existence except 1995. An
investor in our Common Stock must consider the risks and difficulties
encountered by development stage companies, particularly because we compete in a
technologically competitive global market. These risks include:

     *    substantial dependence on one product, The Heart Laser System, which
          has not achieved widespread commercial acceptance;

     *    a need for government approval in the United States and overseas 
          before we can market our product for a broader use;

     *    sensitivity to continued technological development by our competition;

     *    potential limitations on reimbursement of our customers by Medicare,
          Medicaid and private insurance companies for TMR procedures; and

     *    dependence on key personnel.

We cannot be certain that our business strategy will be successful or that we
will successfully address these or other risks.


                                        4

<PAGE>

DEPENDENCE ON THE HEART LASER SYSTEM

     We will continue to focus our resources on the development and 
refinement of The Heart Laser System and single use surgical products. 
Currently, The Heart Laser System is our principal product. If we are unable 
to maintain regulatory approvals or to achieve widespread commercial 
acceptance of TMR using The Heart Laser System, our business, financial 
condition and results of operations will be materially and adversely affected.

LACK OF COMMERCIAL AND CLINICAL ACCEPTANCE; UNCERTAINTY OF OUR TECHNOLOGY

     TMR using The Heart Laser System is new and only recently becoming 
known. To be successful, we need to demonstrate to the medical community in 
general, and to heart surgeons and cardiologists in particular, that TMR 
using The Heart Laser System is effective, relatively safe and cost 
effective. We also need to train heart surgeons to perform TMR using The 
Heart Laser System. To date, we have trained only a limited number of heart 
surgeons and will need to expand our marketing and training capabilities. 
Moreover, even if The Heart Laser System becomes generally accepted by the 
medical community, doctors may not recommend TMR or may recommend a 
competitor's product. We cannot be sure that our technology will be accepted 
as an adjunctive or alternative therapy to other existing or new therapies. 
Heart surgeons and cardiologists may reject TMR using The Heart Laser System 
as an appropriate course of treatment for their patents. If we fail to 
achieve clinical and commercial acceptance, our business, financial condition 
and operations will be adversely affected.

LACK OF LONG-TERM CLINICAL STUDIES

     Patients have only been treated with TMR using The Heart Laser System since
January 1990 and, as a result, there have been few long-term follow-up studies.
If patients suffer harmful, long-term consequences from TMR using The Heart
Laser System, our business, financial condition and operations will be adversely
affected.

HISTORY OF OPERATING LOSSES AND NO ASSURANCE OF FUTURE PROFITABILITY

     PLC Systems Inc. was founded in 1987 and is still in the development stage.
We have incurred operating losses in every year of our existence except 1995. We
incurred net losses of $1,540,000 million for the year ended December 31, 1996
and $14,404,000 million for the year ended December 31, 1997. For the nine
months ended September 30, 1998, we incurred a net loss of $13,344,000. As of
September 30, 1998, we have an accumulated deficit of $64,877,000. We have not
achieved profitability and expect to continue to incur net losses for at least
the next fiscal year. Moreover, although our business is not seasonal in 
nature, our revenues tend to vary significantly from fiscal quarter to fiscal 
quarter.

GOVERNMENT REGULATIONS

     GENERAL

     The Heart Laser System and our manufacturing activities are subject to 
extensive and rigorous federal and state regulation in the United States and 
to similar regulatory requirements in other countries, including the European 
Community, Japan, and certain other countries. Without regulatory approval, 
we cannot market The Heart Laser System in that country. If granted, 
regulations may significantly restrict the use of The Heart Laser System. The 
process of obtaining and maintaining required regulatory approval is lengthy, 
expensive and uncertain.

     Regulations are also subject to change. Changes in existing regulations or
adoption of new regulations could prevent or delay future regulatory approvals
and could adversely affect the marketing of TMR using the Heart Laser System. We
may not obtain necessary regulatory approvals on a timely basis or at all.
Delays in regulatory approval, the failure to receive approval, the loss of
previously received approval, or failure to comply with ongoing regulatory
requirements may have a material adverse effect on our business, financial
condition and operations.


                                        5

<PAGE>

     UNITED STATES

     In April 1998, we obtained a recommendation for Pre-Market Approval from 
an advisory panel of the FDA. The FDA advisory panel unanimously recommended 
Pre-Market Approval for The Heart Laser System for patients who suffer from 
severe, stable angina and whose condition is not amenable to conventional 
heart surgery techniques. As part of its recommendation, the FDA advisory 
panel recommended certain labeling conditions and post-market surveillance 
obligations. In August 1998, the FDA approved TMR using The Heart Laser 
System.

     Although the FDA has approved TMR using The Heart Laser System, the FDA can
reverse its ruling and prohibit use of The Heart Laser System at any time. In
particular, product approval could be withdrawn for failure to comply with
regulatory standards or the occurrence of unforeseen problems with The Heart
Laser System. We must adhere to the FDA's ongoing regulations, which set forth
Quality System Regulations (formerly known as Good Manufacturing Practices) and
require us to test, control and document marketing and use of The Heart Laser
System. If we fail to comply with applicable Quality System Regulations or other
regulatory requirements, we could be subject to sanctions, fines, delays or
suspensions of approvals, injunctions against further distribution, seizures or
recalls of products, adverse publicity, operating restrictions and criminal
prosecutions.

     EUROPEAN COMMUNITY

     In 1995, we received approval for TMR using The Heart Laser System by 
the European Community. The CE Mark, which is similar to FDA approval, allows 
us to market TMR using The Heart Laser System in all European Community 
countries. Although we have received the CE Mark, the French Ministry of 
Health instituted a commercial moratorium on TMR in October 1997. In its 
opinion, the procedure is considered to be experimental and should only be 
performed within the context of a clinical study. An evaluation of the safety 
of TMR using The Heart Laser System is currently under review by a panel of 
French experts. We have provided our clinical results to the panel and are 
actively working to have this moratorium lifted. There is no assurance that 
we will be successful.

     ASIA

     We believe that Japan represents the largest potential market for TMR 
using The Heart Laser System in Asia. Prior to marketing The Heart Laser 
System in Japan, we must receive approval from the Japanese Ministry of 
Health. This approval requires a clinical study in Japan with at least 60 
patients. We plan to submit the results of this study to the Japanese 
Ministry of Health in December 1998. There can be no assurance that this 
clinical study will be sufficient or that the Japanese Ministry of Health 
will grant approval for TMR using The Heart Laser System. Additional 
regulatory applications are pending in China, Taiwan and South Korea. We 
cannot be sure when, if at all, we will obtain regulatory approval in any 
particular country.

RELIANCE UPON PATENTS AND PROPRIETARY RIGHTS

     Since April 1992, we have received 17 United States patents, including 12
which relate to TMR using The Heart Laser System and its related technologies.
Twelve additional United States patent applications are pending. We have also
received eight patents internationally and have over 30 patent applications
pending in international patent offices. We expect to continue to file domestic
and foreign patent applications on various enhancements of The Heart Laser
System. However, no assurance can be given that:

     *    the existing patents will be held valid if subsequently challenged;

     *    any additional patents will be issued; or

     *    the scope of any patent protection will exclude competition or provide
          competitive advantages for TMR using The Heart Laser System.


                                        6

<PAGE>

Similarly, our competitors may receive patents which will prevent, limit or
interfere with our sale and marketing of TMR using The Heart Laser System or
will require us to pay our competitors significant fees or royalties to conduct
our business. Any of these occurrences could have a material adverse effect on
our business, financial condition and operations.

     The validity and breadth of claims covered in medical technology patents
involve complex legal and factual issues and are highly uncertain. There has
been substantial litigation regarding patent and other intellectual property
rights in the medical device industry. We may be forced to incur substantial
legal costs to enforce our patents, protect our trade secrets or know-how,
defend against claimed infringement of the rights of our competitors and to
determine the scope and validity of our proprietary rights. Adverse court
rulings could cause us to incur significant liabilities, seek licenses from
third parties and prevent us from manufacturing, selling or using our
technology. Any of these results could have a material adverse effect on our
business, financial condition and operations.

     We also rely upon unpatented proprietary technology and trade secrets that
we seek to protect, in part, through confidentiality agreements with employees
and other parties. These agreements may be breached leaving us without adequate
remedies. Competitors may develop independently or otherwise acquire
substantially equivalent proprietary technology and trade secrets. We may not be
able to protect our rights in unpatented technology. Any disclosure of such
information could have a material adverse effect on our business, financial
condition and operations.

EXISTING PATENT LITIGATION

     In September 1996, CardioGenesis Corporation filed a civil lawsuit in 
the United States District Court for the Northern District of California 
seeking to have our synchronization patent declared invalid or to obtain a 
determination that it does not infringe on our patent. In October 1996, we 
filed an answer and counterclaim alleging that CardioGenesis infringes on our 
patent. Our counterclaim seeks both injunctive relief and monetary damages 
against CardioGenesis. In October 1997, CardioGenesis filed an amended 
complaint seeking to have our synchronization patent declared unenforceable. 
On December 2, 1998, the court dismissed a portion of CardioGenesis' amended 
complaint on summary judgment. CardioGenesis is not seeking monetary damages 
from us but may seek reimbursement of its legal expenses if successful in the 
lawsuit. Trial is scheduled to begin in January 1999.

     In January 1997, CardioGenesis filed a challenge to our European
synchronization patent in the European Patent Office. In March 1997 we filed a
response. In April 1997, we filed an infringement lawsuit against CardioGenesis
in the Munich (Germany) District Court alleging infringement of our
synchronization patent. An oral hearing has been scheduled in the Munich
District Court for June 1999.

SECURITIES LAW LITIGATION

     In July 1997, an FDA advisory panel recommended against approval of our
application to market The Heart Laser System. Following this recommendation, we
were named as defendant in 21 purported class action lawsuits filed between
August 1997 and November 1997 in the United States District Court for the
District of Massachusetts. The lawsuits seek damages in connection with alleged
violations of the federal securities laws. Nineteen of these complaints have
been consolidated by the court into a single action for pretrial purposes and
two suits have been dismissed. We have filed motions to dismiss all of the
remaining claims. However, our motions to dismiss these claims may not be
successful. We have also been named as a defendant in a lawsuit filed in
Massachusetts Superior Court in September 1998. This suit seeks damages for
alleged negligent misrepresentations and fraud. We cannot make a meaningful
estimate of the amount or range of loss that could result from an unfavorable
outcome of these lawsuits, but our results of operations, cash flows and
financial position could be materially affected. We believe that we have valid
defenses to these litigation matters and intend to conduct a vigorous defense.


                                        7

<PAGE>

POTENTIAL LIMITATIONS ON THIRD PARTY REIMBURSEMENT

     Purchasers of medical devices such as The Heart Laser System generally 
rely upon third party payors, such as Medicare, Medicaid and private 
insurance plans, to reimburse all or part of the costs and fees associated 
with patient health care services. Medicare and Medicaid (in some states) 
determine whether to provide coverage for a particular procedure and 
reimburse hospitals and surgeons for inpatient medical procedures. The Health 
Care Financing Administration, the agency responsible for administering the 
Medicare system, and most private insurers do not provide reimbursement for 
procedures that are determined to be experimental in nature or not considered 
"reasonable and necessary" for the condition being treated. In February 1997, 
the Health Care Financing Administration characterized TMR as experimental. 
As a result, Medicare currently will not reimburse hospitals and surgeons for 
TMR procedures performed on Medicare patients. We believe that approximately 
50% of the patients who might benefit from TMR are insured by Medicare.

     Now that the FDA has approved TMR using The Heart Laser System, we have 
asked the Health Care Financing Administration to reinstate reimbursement for 
TMR. However, there can be no assurance that the Health Care Financing 
Administration will reinstate reimbursement for Medicare patients. Private 
insurers make their own determinations on whether to reimburse new medical 
procedures. We are also asking private insurers to reimburse hospitals and 
surgeons for TMR. Even if coverage is granted, private insurance 
reimbursement levels may still adversely affect the acceptance of TMR using 
The Heart Laser System. In addition, the market for TMR using The Heart Laser 
System could be adversely affected by future legislation to reform the 
nation's health care system or by changes in industry practices regarding 
reimbursement policy and procedures.

PRODUCT LIABILITY AND POSSIBLE INSUFFICIENCY OF INSURANCE

     We may be subject to product liability claims. A recent United States 
Supreme Court decision held that compliance with FDA regulations will not 
shield a company from common-law negligent design claims or manufacturing and 
labeling claims based on state rules. Although we have product liability 
insurance with an yearly aggregate maximum of $10 million, we cannot be sure 
that our insurance is adequate to cover any product liability law suits. Our 
insurance is expensive and in the future may not be available on acceptable 
terms, if at all. If a successful product liability claim or series of claims 
exceeded our insurance coverage, it would divert the attention of our key 
personnel, degrade the reputation and marketability of our technology and 
products, and could have a material adverse effect on our business, financial 
condition and operations.

RAPID TECHNOLOGICAL CHANGE

     Our industry is characterized by rapid technological change, frequent 
new product introductions and evolving industry standards. We expect new 
technologies and products to develop at a rapid pace. The introduction of 
products embodying new technologies and the emergence of new industry 
standards could render our product and technology obsolete. Our future 
success will depend upon our ability to develop and introduce a variety of 
product enhancements to address the increasingly sophisticated needs of our 
customers. We have experienced delays in releasing product enhancements and 
may experience delays in the future. Material delays in introducing product 
enhancements may cause customers to forego purchases of our product and 
purchase those of our competitors.

INTENSE COMPETITION

     Competition in the market for lasers used in the treatment of heart disease
is intense and is expected to increase. We are aware of several other companies
that have entered or have announced their intention to enter the market. Most of
our competitors are using a different type of laser than ours (holmium and
excimer lasers), but other companies may attempt to develop a carbon dioxide
laser (similar to The Heart Laser System). Several of the companies that have
entered the market are developing less invasive methods of TMR which may
eliminate the need to make an incision in the patient's chest. These methods of
performing TMR are in the early stages of development and may not be
commercially available for several years.


                                        8

<PAGE>

     Our competitors may succeed in developing products that are more effective
or less costly in treating heart disease than TMR using The Heart Laser System.
The advent of new devices and procedures and advances in new drugs and genetic
engineering may render TMR uncompetitive or obsolete.

DEPENDENCE ON STRATEGIC MARKETING AND SALES RELATIONSHIPS

     We believe that our success in penetrating our target markets depends on
our ability to develop and maintain strategic relationships with hospital
administrators, managed care executives, heart surgeons and other influential
members of the medical community. We believe that these relationships are
essential to validate our technology, facilitate broad market acceptance of our
product, and enhance our sales, marketing and distribution capabilities. If we
are unable to develop key relationships or maintain existing relationships, we
may have difficulty promoting our surgical procedure and selling our product.

RISKS ASSOCIATED WITH INTERNATIONAL OPERATIONS

     We market and sell our product in the United States and internationally. 
We have offices in Switzerland and Singapore to market and sell our product 
in those countries and surrounding regions. Our entry into international 
markets has required significant management attention and financial 
resources. We cannot be certain that our international sales and marketing 
efforts will produce meaningful revenues or profits. 

     International operations are subject to inherent risks, including:

     *    the impact of recessions in economies outside the United States;

     *    unexpected changes in regulatory requirements;

     *    increased cost and difficulty of staffing and managing foreign
          operations;

     *    reduced protection for patents, trademarks and other intellectual
          property rights in some countries;

     *    potentially adverse tax consequences; and

     *    political and economic instability.

     Our international revenues are generally denominated in local currencies.
We do not currently engage in currency hedging activities. Although exposure to
currency fluctuations to date has been relatively insignificant, future
fluctuations in currency exchange rates may adversely affect revenues from
international sales.

YEAR 2000

     The Year 2000 problem is the result of computer programs that use two
digits (rather than four) to define the applicable year. On January 1, 2000,
computer equipment and programs that have time-sensitive software may not be
able to distinguish whether "00" means 1900 or 2000. This could cause a major
system failure or could create erroneous results. We could be unable to process
transactions, send invoices, or engage in similar business activities. We may
also be vulnerable to other companies' Year 2000 issues.

     During 1998, we developed and began to implement a Year 2000 compliance
program. We identified six basic operational areas that have been and will
continue to be examined:

     *    financial systems, such as general ledger, accounts receivable and
          payable, inventory, order entry and purchasing;


                                        9

<PAGE>

     *    computer hardware, including major hardware to operate the financial
          systems and our related operating software;

     *    operational and support systems, such as telephone equipment;

     *    secondary computer systems, including custom built software;

     *    customers' compliance efforts, including whether our customers are
          Year 2000 compliant; and

     *    suppliers' compliance efforts, including whether our suppliers are
          Year 2000 compliant.

We are presently evaluating the impact of the Year 2000 problem on our 
business operations, our interfaces with customers and vendors, and any 
modifications to products we have sold. We have tested our computer hardware 
equipment and software. We have tested The Heart Laser System and believe 
that it is Year 2000 compliant. Despite investigation and testing by us and 
our business partners, our products may contain errors or defects associated 
with Year 2000 date functions.

     In 1998, we spent approximately $200,000 on new enterprise resource 
planning system software that our vendor has represented is Year 2000 
compliant. This new software system replaced substantially all of our 
previous financial software system. Our current estimates of the impact of 
the Year 2000 problem on our operations and financial results do not include 
costs and time that may be incurred as a result of our vendors' or customers' 
failure to become Year 2000 compliant.  We believe that our new enterprise 
resource planning software substantially addresses our material Year 2000 
risks; however, we are continuing to test our secondary systems and third 
party compliance efforts. We are unable to predict the extent to which our 
business will be adversely affected if our software or related computer 
systems experience a material Year 2000 failure. Known or unknown errors or 
defects that affect the operation of our software could result in delay or 
loss of revenue, cancellation of customer contracts, diversion of product 
development resources, damage to our reputation, increased service and 
warranty costs, and litigation costs. Any of these occurrences could have a 
material adverse effect on our business, financial condition and operations.

ABILITY TO ATTRACT GOOD EMPLOYEES AND DEPENDENCE UPON KEY PERSONNEL

     We intend to hire additional personnel in the next year and beyond.
Competition for these individuals is intense, and we may not be able to attract
or retain highly qualified personnel in the future. Our future success also
depends upon the continued service of our executive officers and other key
personnel. We are especially dependent upon the services of William C. Dow, our
President and Chief Executive Officer. Moreover, we do not have a "key person"
life insurance policy covering Mr. Dow. The loss of Mr. Dow would have a
material adverse effect on our company.

DISCRETION AS TO USE OF PROCEEDS

     Our management can spend most of the proceeds from this offering in ways
with which you may not agree. We cannot predict that the proceeds will be
invested to yield a favorable return.

POSSIBILITY OF WIDE FLUCTUATIONS IN STOCK PRICE

     The market price of our Common Stock has fluctuated widely in the past and
is likely to fluctuate in the future. In addition to the volatility of the
overall securities markets, the market prices of the securities of companies in
the medical technology and medical device manufacturing industry have been
especially volatile. You may be unable to resell shares of our Common Stock at
or above the current market price. In the past, companies that have experienced
volatility in the market price of their stock have been the object of securities
class action litigation. We have been the object of securities class action
litigation and it could result in substantial costs and a diversion of our
attention and resources.

RESTRICTIONS OF BRITISH COLUMBIA LAW

 POSSIBLE UNENFORCEABILITY OF JUDGMENTS AGAINST US AND OUR CANADIAN DIRECTORS


                                       10

<PAGE>

     We are incorporated under the laws of British Columbia. Under British
Columbia law, you may not be able to enforce a judgment issued by courts in the
United States against us or our Canadian directors.

     RESTRICTIONS ON ELECTION OF DIRECTORS

     Under British Columbia law, a majority of our directors must be residents
of Canada and at least one director must be a resident of British Columbia. As a
result, you may be limited with respect to the persons that you can nominate and
elect as directors. In addition, our Articles provide for three classes of
directors, with one-third elected each year for a three year term. These
provisions may have the effect of delaying or preventing a corporate takeover or
a change in our management. This could adversely affect the market price of your
Common Stock.

ANTITAKEOVER PROVISIONS

     Provisions of our Certificate of Incorporation, our Memorandum and Articles
and British Columbia law could make it more difficult for a third party to
acquire us, even if the acquisition would be beneficial to you. Furthermore,
these provisions could prevent you from realizing the premium return that 
stockholders may realize in conjunction with corporate takeovers.

SHARES ELIGIBLE FOR FUTURE SALE

     If our stockholders sell substantial amounts of our Common Stock (including
shares to be issued upon the exercise or conversion of outstanding stock
options, redeemable warrants and convertible debentures) in the public market
following this offering, the market price of our Common Stock could fall. Such
sales also might make it more difficult for us to sell equity or equity-related
securities in the future at a price we deem appropriate.

     As of December 14, 1998 and before this offering, we have 19,739,647 shares
of Common Stock outstanding. Of these shares, approximately 18,550,000 shares
are eligible for sale in the public market.

ADDITIONAL SHARES RESERVED FOR FUTURE ISSUANCE

     We have reserved an additional 3,126,291 shares of Common Stock for future
issuance upon exercise or conversion of outstanding options, redeemable warrants
and convertible debt. If these securities are exercised or converted, you may
experience significant dilution in the book value and earnings per share of your
Common Stock.

NEED FOR ADDITIONAL FUNDING

     We believe that the proceeds from this offering and existing revenues will
be sufficient to meet our cash requirements for the next 12 months. However, we
may be unable to raise the total amount of proceeds covered by this Prospectus.
Furthermore, we may have unforeseen problems in obtaining government approval
and commercial acceptance of The Heart Laser System or we may incur
unanticipated decreases in operating revenues or increases in expenses. Any of
these events may adversely impact our capital resources, requiring us to raise
additional funds to finance continued research and development, production, and
sales efforts. In such an event, we will need to obtain financing through sale
of debt or equity securities, bank financing, joint ventures or other means. We
may not be able to raise additional capital upon satisfactory terms and our
business, financial condition and operations could be adversely affected.

NO INTENTION TO PAY DIVIDENDS

     We have never paid any cash dividends on our Common Stock. We currently
intend to retain all future earnings, if any, for use in our business and do not
expect to pay any dividends in the foreseeable future.


                                       11

<PAGE>

                                 USE OF PROCEEDS

     We plan to use the net proceeds from the sale of the Common Stock for
general corporate purposes, including working capital, capital expenditures,
acquisitions, and the repayment or refinancing of debt. Each time we sell the
Common Stock, we will provide a Prospectus Supplement that will contain
information about how we intend to use the net proceeds from the Common Stock
sold at that time.

                              PLAN OF DISTRIBUTION

     We may offer the Common Stock directly to purchasers, to or through
underwriters, through dealers or agents, or through a combination of such
methods.

     If underwriters are used in an offering of the Common Stock, we will
execute an underwriting agreement with such underwriters and will set out the
name of each underwriter and the terms of the transaction (including any
underwriting discounts and other terms constituting compensation of the
underwriters and any dealers) in a Prospectus Supplement. If an underwriting
syndicate is used, the managing underwriter(s) will be set forth on the cover of
a Prospectus Supplement. Common Stock will be acquired by the underwriters for
their own accounts and may be resold from time to time in one or more
transactions, including negotiated transactions, at a fixed public offering
price or at varying prices determined at the time of sale. Any public offering
price and any discounts or concessions allowed or reallowed or paid to dealers
may be changed from time to time.

     If dealers are used in an offering of the Common Stock, we will sell the
Common Stock to the dealers as principals. The dealers then may resell such
shares of Common Stock to the public at varying prices which they determine at
the time of resale. The names of the dealers and the terms of the transaction
will be set forth in a Prospectus Supplement.

     If agents are used in an offering of the Common Stock, the names of the
agents and the terms of the agency will be set forth in a Prospectus Supplement.
Unless otherwise indicated in a Prospectus Supplement, the agents will act on a
best-efforts basis for the period of their appointment.

     Dealers and agents named in a Prospectus Supplement may be deemed to be
underwriters (within the meaning of the Securities Act of 1933) of the Common
Stock described therein. Underwriters, dealers and agents, may be entitled to
indemnification by our Company against certain liabilities (including
liabilities under the Securities Act of 1933) under underwriting or other
agreements. The terms of any indemnification provisions will be set forth in a
Prospectus Supplement.

     We may solicit offers to purchase the Common Stock from, and sell the
Common Stock directly to, institutional investors or others who may be deemed to
be underwriters within the meaning of the Securities Act of 1933 with respect to
any resales thereof. The terms of any offer will be set forth in a Prospectus
Supplement.

     Certain underwriters, dealers or agents and their associates may engage in
transactions with, and perform services for, our Company in the ordinary course
of business, including refinancing of our indebtedness.

     If so indicated in a Prospectus Supplement, we will authorize underwriters
or other persons acting as our agents to solicit offers by institutional
investors to purchase our Common Stock pursuant to contracts providing for
payment and delivery on a future date. We may enter contracts with commercial
and savings banks, insurance companies, pension funds, investment companies,
educational and charitable institutions and other institutional investors. The
obligations of any institutional investor will be subject to the condition that
its purchase of our Common Stock will not be illegal, at the time of delivery.
The underwriters and other agents will not be responsible for the validity or
performance of contracts.

     To facilitate an offering of a series of the Common Stock, certain persons
participating in the offering may engage in transactions that stabilize,
maintain or otherwise affect the price of our Common Stock. This may include


                                       12

<PAGE>

over-allotments of the Common Stock. Over-allotments involve the sale by persons
participating in the offering of more Common Stock than we have sold to them. In
such circumstances, these persons would cover over-allotments by purchasing our
Common Stock in the open market or by exercising their over-allotment options.
In addition, such persons may stabilize or maintain the price of our Common
Stock by bidding for or purchasing our Common Stock in the open market or by
imposing penalty bids, whereby selling concessions allowed to dealers
participating in any such offering may be reclaimed if the Common Stock they
sell is repurchased in connection with stabilization transactions. The effect of
these transactions may be to stabilize or maintain the market price of our
Common Stock at a level above that which might otherwise prevail in the open
market. These transactions, if commenced, may discontinue at any time.

                                  LEGAL MATTERS

     Certain legal matters with respect to the Common Stock offered hereby will
be passed upon for us by Brownstein Hyatt Farber & Strickland, P.C. of Denver,
Colorado, and DuMoulin Black of Vancouver, British Columbia.

                                     EXPERTS

     The financial statements for the three years ended December 31, 1997,
incorporated in this Prospectus by reference to the Annual Report on Form 10-K
for the fiscal year ended December 31, 1997, have been so incorporated in
reliance upon the report of Ernst & Young LLP, independent auditors, which
report is given on the authority of that firm as experts in auditing and
accounting.


                                       13

<PAGE>

<TABLE>
<CAPTION>
                                TABLE OF CONTENTS

                                                                Page
                                                                ----
<S>                                                             <C>
Where You Can Find More Information...............................2
Note Regarding Forward-Looking Statements.........................2
PLC Systems Inc...................................................3
Risk Factors......................................................4
Use of Proceeds..................................................11
Plan of Distribution.............................................12
Legal Matters....................................................13
Experts  ........................................................13
</TABLE>

                                  COMMON STOCK,
                                  NO PAR VALUE

                                PLC SYSTEMS INC.

                                   PROSPECTUS

                               DECEMBER ___, 1998


                                       14

<PAGE>

                 PART II. INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

     The following expenses incurred in connection with the sale of the
securities being registered will be borne by the Registrant. Other than the SEC
registration fee, the amounts stated are estimates.

<TABLE>
         <S>                                                 <C>
         SEC Registration Fee............................... 3,336

         AMEX Filing Fee.................................... *

         Legal Fees and Expenses............................ *

         Accounting Fees and Expenses....................... *

         TOTAL.............................................. *
</TABLE>

* To be filed by amendment.


ITEM 15.  INDEMNIFICATION OF OFFICERS AND DIRECTORS.

     The British Columbia Company Act (the "Company Act"), Section 128, 
enables a corporation, with the approval of the British Columbia Supreme 
Court, to indemnify a director or a former director of the Registrant, or a 
director or a former director of a corporation of which the Registrant is or 
was a shareholder, and his heirs and personal representatives, against all 
costs, charges and expenses, including an amount paid to settle an action or 
to satisfy a judgment, actually and reasonably incurred by him, including an 
amount paid to settle an action or satisfy a judgment in a civil, criminal or 
administrative action, or proceeding to which he is made a party by reason of 
being or having been a director, including an action brought by the 
Registrant or corporation if:

     (a) he acted honestly and in good faith with a view to the best interest of
the corporation of which he is or was a director; and

     (b) in the case of a criminal or administrative action or proceeding, he
had reasonable grounds for believing that his conduct was lawful.

     The Company Act also provides that a company may purchase and maintain
insurance for a director or former director of the Registrant, or a director or
former director of a corporation of which it is or was a shareholder, and his
heirs and personal representatives, against liability incurred by him as a
director or officer.

     The Memorandum and Articles of the Registrant provide that the Registrant
shall indemnify any person who was or is a party or is threatened to be made a
party to any threatened, pending or completed action or proceeding whether or
not brought by the Registrant or by a corporation or other legal entity or
enterprise whether civil, criminal or administrative, because he is or was a
director, officer, employee or agent of the Registrant, or is or was serving at
the request of the Registrant as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or other enterprise in
accordance with Section 128 of the Company Act.

     The Memorandum and Articles of the Registrant also provide that the
Registrant shall indemnify any person other than a director with respect to any
loss, damage, costs or expenses whatsoever incurred by him while acting as an
officer, employee or agent for the Registrant unless such loss, damage, cost or
expense shall arise out of failure to comply with instructions, willful act, or
default or fraud by such person in any of which events the


                                       15

<PAGE>

Registrant shall only indemnify such persons if the directors in their absolute
discretion so decide, or the Registrant by ordinary resolutions shall so direct.

     The indemnification provided by the Memorandum and Articles of the
Registrant shall continue as to a person who has ceased to be a director,
officer, employee or agent, and shall benefit such person's heirs, executors and
administrators.

     The Memorandum and Articles of the Registrant authorize the directors from
time to time to cause the Registrant to give indemnities to any director,
officer, employee, agent or other person who has undertaken or is about to
undertake any liability on behalf of the Registrant or any corporation
controlled by it.

     The Memorandum and Articles of the Registrant further provide that, subject
to the Company Act, no director, officer or employee for the time being of the
Registrant shall be liable for the acts, receipts, neglects or defaults of any
other director, officer, or employee or for joining in any receipt or act for
conformity, or for any loss, damages or expense happening to the Registrant
through insufficiency or deficiency of title to any property acquired by order
of the board for the Registrant, or for the insufficiency or deficiency of any
security in or upon which any monies of or belonging to the Registrant shall be
invested or for any loss or damages arising from the bankruptcy, insolvency or
tortuous act of any person, firm or corporation with whom or which any monies,
securities or effects shall be lodged or deposited or for any loss occasioned by
any error of judgment or oversight on his part, or for any loss, damage or
misfortune whatever which may happen in the execution of the duties of his
respective office or trust or in relation thereto unless the same shall happen
by or through his own willful act of default, negligence, breach of trust or
breach of duty.

     The Memorandum and Articles of the Registrant provide that the directors of
the Registrant may rely upon the accuracy of any statement of fact represented
by an officer of the Registrant to be correct, or upon statements in a written
report of the auditor of the Registrant, and shall not be reasonable or held
liable for any loss or damage resulting in the paying of any dividends or
otherwise acting in good faith upon any such statement.

     The Memorandum and Articles of the Registrant permit the directors to cause
the Registrant to purchase and maintain insurance for the benefit of any person
who was or is a director, officer, employee or agent of the Registrant or is or
was serving at the request of the Registrant as a director, officer, employee or
agent of another corporation, partnership, joint venture, trust or other
enterprise against any liability incurred by him as a director, officer,
employee or agent.

     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers or persons controlling the Registrant,
the Registrant has been informed that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act and
is therefore unenforceable. No dealer, salesman or any other person has been
authorized in connection with this Offering to give any information or to make
any representations other than those contained in this Prospectus and, if given
or made, such information or representations must not be relied upon as having
been authorized by the Registrant. This Prospectus does not constitute an offer
to sell or a solicitation of an offer to buy any of the securities offered
hereby in any jurisdiction in which such offer or solicitation is not authorized
or in which the person making such offer or solicitation is not qualified to do
so or to any person to whom it is unlawful to make such an offer or
solicitation. Neither the delivery of this Prospectus nor any sale made
hereunder shall, under any circumstances, create an implication that there has
been no change in the circumstances of the Registrant or the facts herein set
forth since the date hereof.


                                       16

<PAGE>

ITEM 16.  EXHIBITS.
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                  DESCRIPTION OF DOCUMENT
- -------                 -----------------------
<S>     <C>

3.1     Certificate of Incorporation, incorporated by reference to the
        Registrant's Registration Statement on Form S-1 (SEC File No. 33-48340),
        as previously filed with the Securities and Exchange Commission.
3.2     Memorandum and Articles (Bylaws), incorporated by reference to the
        Registrant's Registration Statement on Form S-1 (SEC File No. 33-48340),
        as previously filed with the Securities and Exchange Commission.
4.1     Form of Common Stock Certificate, incorporated by reference to the
        Registrant's Registration Statement on Form S-1 (SEC File No. 333-37335)
        and amendments thereto, as previously filed with the Securities and
        Exchange Commission.
5.1     Opinion of Brownstein Hyatt Farber & Strickland, P.C.*
5.2     Opinion of DuMoulin Black.*
12.1    Computation of Ratio of Earnings to Fixed Charges.*
23.1    Consent of Ernst & Young LLP.*
23.2    Consent of Brownstein Hyatt Farber & Strickland, P.C. (included in
        Exhibit 5.1)
23.3    Consent of DuMoulin Black. (included in Exhibit 5.2)
24.1    Power of Attorney (included in Part II of this Registration Statement
        under the caption "Signatures").
27.1    Financial Data Schedule.*
99.1    Convertible Debenture Purchase Agreement dated as of April 23, 1998
        between Southbrook International Investment, Ltd., Brown Simpson
        Strategic Growth Fund, L.P. and Brown Simpson Strategic Growth Fund,
        Ltd. and the Registrant, incorporated by reference to the Registrant's
        Quarterly Report on Form 10-Q for the Quarter ended March 31, 1998 (File
        No. 1-11388), as previously filed with the Securities and Exchange
        Commission.
99.2    Form of Convertible Debenture, incorporated by reference to the
        Registrant's Quarterly Report on Form 10-Q for the Quarter ended March
        31, 1998 (File No. 1-11388), as previously filed with the Securities and
        Exchange Commission.
99.3    Form of Redeemable Warrant, incorporated by reference to the
        Registrant's Quarterly Report on Form 10-Q for the Quarter ended March
        31, 1998 (File No. 1-11388), as previously filed with the Securities and
        Exchange Commission.
99.4    Registration Rights Agreement dated as of April 23, 1998 between
        Southbrook International Investment, Ltd., Brown Simpson Strategic
        Growth Fund, L.P. and Brown Simpson Strategic Growth Fund, Ltd. and the
        Registrant, incorporated by reference to the Registrant's Quarterly
        Report on Form 10-Q for the Quarter ended March 31, 1998 (File No.
        1-11388), as previously filed with the Securities and Exchange
        Commission.
</TABLE>

*       To be filed by amendment or as an exhibit to a document to be
        incorporated by reference herein.


ITEM 17.  UNDERTAKINGS.

(a)  The undersigned Registrant hereby undertakes:

     (1)  To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:

          (i) To include any prospectus required by Section 10(a)(3) of the
     Securities Act;

          (ii) To reflect in the prospectus any facts or events arising after
     the effective date of the Registration Statement (or the most recent
     post-effective amendment thereof) which, individually or in the aggregate,
     represent a fundamental change in the information set forth in the
     Registration Statement.


                                       17

<PAGE>

     Notwithstanding the foregoing, any increase or decrease in volume of
     securities offered (if the total dollar value of securities offered would
     not exceed that which was registered) and any deviation from the low or
     high end of the estimated maximum offering range may be reflected in the
     form of prospectus filed with the Commission pursuant to Rule 424(b) if, in
     the aggregate, the changes in volume and price represent no more than a 20%
     change in the maximum aggregate offering price set forth in the
     "Calculation of Registration Fee" table in the effective Registration
     Statement.

          (iii) To include any material information with respect to the plan of
     distribution not previously disclosed in the Registration Statement or any
     material change to such information in the Registration Statement;

PROVIDED, HOWEVER, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
Registration Statement is on Form S-3, Form S-8 or Form F-3, and the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed with or furnished to the Commission by the
Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange
Act of 1934 that are incorporated by reference in the Registration Statement.

     (2) That, for the purpose of determining any liability under the Securities
Act of 1933, each such post-effective amendment shall be deemed to be a new
Registration Statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial BONA
FIDE offering thereof.

     (3) To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of the
offering.
     
(b)  The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
Registrant's annual report pursuant to section 13(a) or section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to section 15(d) of the 1934 Act)
that is incorporated by reference in the Registration Statement shall be deemed
to be a new Registration Statement relating to the securities offered therein,
and the offering of such securities at that time shall be deemed to be the
initial BONA FIDE offering thereof.

(c)  Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Securities Act
of 1933 and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities
Act of 1933 and will be governed by the final adjudication of such issue.

(d)  The undersigned Registrant hereby undertakes that:

     (1) For purposes of determining liability under the Securities Act of 1933,
the information omitted from the form of prospectus filed as part of this
Registration Statement in reliance upon Rule 430A and contained in a form of
prospectus filed by the Registrant pursuant to Rule 424(b)(1) or (4) or 497(h)
under the Securities Act shall be deemed to be part of this Registration
Statement as of the time it was declared effective.

     (2) For the purpose of determining any liability under the Securities Act
of 1933, each post-effective amendment that contains a form of prospectus shall
be deemed to be a new Registration Statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.


                                       18

<PAGE>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the city of Franklin, state of Massachusetts, on December 14,
1998.

                                 PLC SYSTEMS INC.
                                 a British Columbia corporation

                                 By:  /s/ WILLIAM C. DOW
                                    -----------------------------------------
                                 Name:   William C. Dow
                                 Title:  President, Chief Executive Officer and
                                         Director (PRINCIPAL EXECUTIVE OFFICER)

                                POWER OF ATTORNEY

     We, the undersigned officers and directors of PLC Systems Inc. hereby
severally constitute William C. Dow and Robert Svikhart, and each of them
singly, our true and lawful attorneys with full power to them, and each of them
singly, to sign for us and in our names in the capacities indicated below the
Registration Statement filed herewith and any and all amendments to said
Registration Statement, and generally to do all such things in our name and
behalf in our capacities as officers and directors to enable PLC Systems Inc. to
comply with the provisions of the Securities Act of 1933, as amended, and all
requirements of the Securities and Exchange Commission, hereby ratifying and
confirming our signatures as they may be signed by our said attorneys, or any of
them, to said Registration Statement and any and all amendments thereto.

     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement and Power of Attorney has been signed below by the
following persons in the capacities and on the dates indicated:
<TABLE>
<CAPTION>
NAME                                        TITLE                                    DATE
- ----                                        -----                                    ----
<S>                                  <C>                                      <C>
    /s/ WILLIAM C. DOW               President, Chief Executive Officer       December 14, 1998
- ---------------------------------    and Director (PRINCIPAL EXECUTIVE
        William C. Dow               OFFICER)

   /s/ ROBERT SVIKHART               Chief Financial Officer and              December 14, 1998
- ---------------------------------    Treasurer (PRINCIPAL FINANCIAL
       Robert Svikhart               OFFICER AND PRINCIPAL ACCOUNTING
                                     OFFICER)

  /s/ EDWARD PENDERGAST              Chairman of the Board of Directors       December 14, 1998
- ---------------------------------
      Edward Pendergast

  /s/ HAROLD P. CAPOZZI              Director                                 December 14, 1998
- ---------------------------------
      Harold P. Capozzi


                                       19

<PAGE>


 /s/  H.B. BRENT NORTON               Director                                December 14, 1998
- ---------------------------------
      H.B. Brent Norton, M.D.

 /s/  KENNETH J. PULKONIK             Director                                December 14, 1998
- ---------------------------------
      Kenneth J. Pulkonik

 /s/ ROBERT I. RUDKO                  Director                                December 14, 1998
- ---------------------------------
     Robert I. Rudko, Ph.D

 /s/ ROBERTS A. SMITH                 Director                                December 14, 1998
- ---------------------------------
     Roberts A. Smith, Ph.D

</TABLE>

                                       20

<PAGE>

                                  EXHIBIT INDEX
<TABLE>
<CAPTION>

EXHIBIT
NUMBER                       DESCRIPTION OF DOCUMENT
- -------                      -----------------------
<S>     <C>
3.1     Certificate of Incorporation, incorporated by reference to the
        Registrant's Registration Statement on Form S-1 (SEC File No. 33-48340),
        as previously filed with the Securities and Exchange Commission.
3.2     Memorandum and Articles (Bylaws), incorporated by reference to the
        Registrant's Registration Statement on Form S-1 (SEC File No. 33-48340),
        as previously filed with the Securities and Exchange Commission.
4.1     Form of Common Stock Certificate, incorporated by reference to the
        Registrant's Registration Statement on Form S-1 (SEC File No. 333-37335)
        and amendments thereto, as previously filed with the Securities and
        Exchange Commission.
5.1     Opinion of Brownstein Hyatt Farber & Strickland, P.C.*
5.2     Opinion of DuMoulin Black.*
12.1    Computation of Ratio of Earnings to Fixed Charges.*
23.1    Consent of Ernst & Young LLP.*
23.2    Consent of Brownstein Hyatt Farber & Strickland, P.C. (included in
        Exhibit 5.1)
23.3    Consent of DuMoulin Black. (included in Exhibit 5.2)
24.1    Power of Attorney (included in Part II of this Registration Statement
        under the caption "Signatures").
27.1    Financial Data Schedule.*
99.1    Convertible Debenture Purchase Agreement dated as of April 23, 1998
        between Southbrook International Investment, Ltd., Brown Simpson
        Strategic Growth Fund, L.P. and Brown Simpson Strategic Growth Fund,
        Ltd. and the Registrant, incorporated by reference to the Registrant's
        Quarterly Report on Form 10-Q for the Quarter ended March 31, 1998 (File
        No. 1-11388), as previously filed with the Securities and Exchange
        Commission.
99.2    Form of Convertible Debenture, incorporated by reference to the
        Registrant's Quarterly Report on Form 10-Q for the Quarter ended March
        31, 1998 (File No. 1-11388), as previously filed with the Securities and
        Exchange Commission.
99.3    Form of Redeemable Warrant, incorporated by reference to the
        Registrant's Quarterly Report on Form 10-Q for the Quarter ended March
        31, 1998 (File No. 1-11388), as previously filed with the Securities and
        Exchange Commission.
99.4    Registration Rights Agreement dated as of April 23, 1998 between
        Southbrook International Investment, Ltd., Brown Simpson Strategic
        Growth Fund, L.P. and Brown Simpson Strategic Growth Fund, Ltd. and the
        Registrant, incorporated by reference to the Registrant's Quarterly
        Report on Form 10-Q for the Quarter ended March 31, 1998 (File No.
        1-11388), as previously filed with the Securities and Exchange
        Commission.
</TABLE>

*       To be filed by amendment or as an exhibit to a document to be
        incorporated by reference herein.


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