POSSIS MEDICAL INC
424B2, 2000-04-17
ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES
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                                             POSSIS MEDICAL, INC.
                                             9055 Evergreen Boulevard NW
                                             Minneapolis,  Minnesota 55433-8003
                                             tel: 763.780.4555
                                             fax: 763.780.7223
                                             website: www.possis.com

<PAGE>

PROSPECTUS






                              POSSIS MEDICAL, INC.

                                1,912,859 Shares
                                  Common Stock




     This  prospectus  covers the sale of shares of the common stock,  par value
$.40 per share,  of Possis  Medical,  Inc.,  to be sold from time to time by the
selling  shareholders  named in this  prospectus.  The  shares  covered  by this
prospectus consist of 1,594,049 shares of common stock, 318,810 shares of common
stock  issuable upon the exercise of warrants  and, in accordance  with Rule 416
under  the  Securities  Act of 1933,  as  amended,  an  indeterminate  number of
additional  shares as may be required to prevent  dilution  resulting from stock
splits,  stock dividends or similar events.  Possis Medical will not receive any
of the proceeds from the sale of the shares.

     The common stock is traded on the Nasdaq  National  Market under the symbol
"POSS." On April 13, 2000,  the last  reported sale price of the common stock as
reported on the Nasdaq National Market was $10 7/16 per share.

                                 _______________

     See the section  titled  "Risk  Factors"  beginning on page 3 to read about
certain factors you should consider before buying shares of our common stock.

     Neither the  Securities and Exchange  Commission  nor any state  securities
commission has approved or  disapproved  of these  securities or passed upon the
adequacy or accuracy of this prospectus. Any representation to the contrary is a
criminal offense.
                                 _______________







                              POSSIS MEDICAL, INC.
                          9055 Evergreen Boulevard N.W.
                          Minneapolis, Minnesota 55433
                                 (612) 780-4555


                 The date of this prospectus is April 14, 2000.

<PAGE>


                                TABLE OF CONTENTS

Risk Factors.............................................................3
Where You Can Find More Information......................................7
About Possis Medical, Inc................................................8
Selling Shareholders....................................................10
Plan of Distribution....................................................12
Experts.................................................................12
Legal Matters...........................................................12

<PAGE>

                                  RISK FACTORS

     An  investment in our common stock  involves a number of risks.  You should
consider  carefully  the  following  risk  factors,   together  with  the  other
information  in this  prospectus,  before buying any shares.  You also should be
aware that this  prospectus  contains  forward-looking  statements  that are not
related  to  historical  results.  These  forward-looking  statements,  such  as
statements  concerning  our  strategies,  plans,  objectives,  expectations  and
intentions,  involve risks and  uncertainties.  Our actual  results could differ
materially from those anticipated in these forward-looking  statements.  Factors
that could cause or contribute to such differences  include, but are not limited
to, the following risk factors.

     We have a history of operating losses and a lack of profitable operations.

     We incurred  losses for fiscal years 1997, 1998 and 1999. As of January 31,
2000, we had  accumulated a deficit of $55.1  million.  We incurred an operating
loss of $9.6 million for the year ended  July 31,  1997,  an  operating  loss of
$12.5 million for the year ended July 31, 1998,  and an operating  loss of $12.5
million for the year ended July 31, 1999.

     We do not expect to become profitable  unless we achieve  significant sales
in the United States.  We must convince health care  professionals,  third-party
payors and the  general  public of the  medical  and  economic  benefits  of the
AngioJet7  RheolyticJ  Thrombectomy  System.  We cannot  assure you that we will
succeed in marketing  this  product and achieve  significant  sales.  Even if we
accomplish this goal, we cannot assure you that we will operate  profitably on a
consistent basis.

     There  has been  limited  regulatory  approval  for our  products,  and our
products are subject to extensive governmental regulation.

     Our  products and  manufacturing  activities  are subject to extensive  and
rigorous  federal  and  state  regulation  in  the  United  States  and  various
regulatory  requirements in other  countries,  including  Japan.  Current United
States Food and Drug  Administration  enforcement  policy strictly prohibits the
marketing of approved  medical devices for unapproved uses.  Therefore,  even if
our products receive regulatory approval, regulators may significantly limit the
uses for which our  products  may be  marketed.  In  addition,  the  process  of
obtaining  and  maintaining  required  regulatory  approvals  can be lengthy and
expensive, and the outcome of the process can be uncertain. Moreover, regulatory
approvals may be withdrawn if we fail to comply with regulatory  standards or if
unforeseen problems arise following the initial marketing of a product.

     Additionally,  we are  required  to adhere to  Quality  System  Regulations
relating to product design, development,  manufacturing,  servicing, testing and
documentation.  Failure to comply with applicable  Quality System Regulations or
other  regulatory  requirements  may result in fines,  delays or  suspensions of
approvals, injunctions against further distribution of our products, seizures or
recalls of products,  operating  restrictions,  criminal  prosecutions  or other
sanctions, in addition to adverse publicity.  The adoption of new regulations or
changes in existing  regulations could prevent us from obtaining,  or affect the
timing of, future regulatory  approvals and could adversely affect the marketing
of our existing  products.  We cannot  assure you that we will be able to obtain
necessary  regulatory  approvals  on a  timely  basis or at all.  Delays  in our
receipt of or failure to receive  regulatory  approvals,  the loss of previously
received  approvals or our failure to comply with regulatory  requirements would
have a material adverse effect on our business,  financial condition and results
of operations.

<PAGE>

     Clinical and marketing acceptance of our products is uncertain.

     Because our products are new to the market,  they are still  unfamiliar  to
many members of the medical  community.  The AngioJet  System has only  recently
begun to be used for the removal of vascular,  cardiovascular  and  intercranial
blood clots,  known to the medical community as "thrombus." Market acceptance of
our AngioJet  products will depend  largely on our ability to demonstrate to the
medical  community in general,  and to  interventionalists  in  particular,  the
efficacy,  relative  safety and  cost-effectiveness  of treating  cardiovascular
disease  using our  products,  as well as on our ability to train  physicians to
perform necessary  procedures using our products.  We cannot assure you that our
products   will   provide   benefits   considered   adequate  by   providers  of
cardiovascular  and vascular  treatments,  or that enough providers will use our
products to ensure  their  commercial  success.  Moreover,  even if our products
become generally  accepted by the medical  community,  physicians trained to use
our  products  may not use them or may  recommend a  competitor=s  products.  We
cannot assure you that physicians will determine that our AngioJet  products are
appropriate  courses of treatment for their patients or acceptable  alternatives
to other  therapies.  Even if they are  accepted by the medical  community,  our
ability to successfully market our products before they receive FDA approval may
be limited by FDA  regulations,  guidelines  or  policies.  Lack of clinical and
market  acceptance and significant  restrictions on our marketing  program would
have a material adverse effect on our business,  financial condition and results
of operations.

     We depend on our AngioJet products.

     We have focused our resources on the continued  development  and refinement
of our AngioJet System. If we fail to obtain necessary regulatory approvals,  or
the  medical  community  rejects  the use of the  AngioJet  System for  multiple
purposes,  our business,  financial condition and results of operations would be
materially and adversely affected.

     The industry in which we compete is  characterized  by rapid  technological
change and intense competition.

     The medical products market is characterized by rapidly evolving technology
and intense competition.  Our future success depends on our ability to keep pace
with advancing  technology and competitive  innovations.  Potential  competitors
have developed or are in the process of developing  technologies that are, or in
the  future  may be,  the  basis  for  competitive  products,  some of which may
accomplish desired  therapeutic  effects through entirely different methods than
the products we are developing.

     We believe our AngioJet System will face intense competition from a variety
of  treatments  for  the  removal  of  blood  clots,  including  clot-dissolving
(thrombolytic)  drug  therapies,  surgical  intervention,  balloon  embolectomy,
mechanical  and  laser  thrombectomy  devices,  ultrasound  ablators,  and other
thrombectomy  devices  based  on  waterjet  systems  that  are  currently  being
developed by other companies.

     Many of the  companies  developing  competing  devices  have  substantially
greater  capital and  substantially  greater  resources  for and  experience  in
research and development,  regulatory matters,  manufacturing and marketing than
we have.  These companies will be serious  competitors for us and may succeed in
developing products that are more effective and/or less costly than the AngioJet
System.  Furthermore,  these  companies  may be more  successful  than we are in
manufacturing  and  marketing  their  products.  Our  competitors  or others may
develop technologies, products or procedures that are more effective than any we
are  developing  or that may render our  technology  and  products  obsolete  or
noncompetitive.  The advent of new  devices,  procedures  or new  pharmaceutical
agents could hinder our ability to compete effectively and could have a material
adverse effect on our business, financial condition and results of operations.

<PAGE>

     Our  success  will  depend on our  ability to  maintain  patents  and other
proprietary rights.

     Our success  depends and will  continue to depend in part on our ability to
maintain patent protection for our products and processes, to preserve our trade
secrets  and to  operate  without  infringing  the  proprietary  rights of third
parties.  We attempt to protect our technology by filing patent applications for
technology that we consider important to the development of our business,  among
other measures described below. We currently hold five United States patents and
eighteen  foreign  patents  related  to the  Perma-Flow  Graft,  and we have two
additional  patent  applications  pending  in the  United  States and one patent
application pending in foreign  jurisdictions  relating to the Perma-Flow Graft.
We currently  hold five United States patents  relating to the AngioJet  System,
and we have thirteen  United  States and numerous  foreign  patent  applications
pending relating to the AngioJet System. The European Patent Office has accepted
three  of our  AngioJet  System  patent  applications.  In  connection  with the
Perma-Seal Graft, we hold two United States patents,  with three pending foreign
patent  applications.  Claims  relating to medical  technology  patents  involve
complex  legal and  factual  questions.  Therefore,  their  outcomes  are highly
uncertain.  We cannot  assure you that our pending  applications  will result in
patents  being  issued to us or that  either  our new  patents  or our  existing
patents will give us a competitive  advantage.  Moreover,  our  competitors  may
design  around any  patents  issued to us,  third  parties  may  receive  patent
protection on their own waterjet devices, and others may hold or receive patents
containing claims that may cover products developed by us.

     We require all our employees to execute non-disclosure agreements when they
join Possis Medical.  These agreements  generally  provide that all confidential
information  developed  or made known to the employee by us during the course of
his or her  employment  with Possis  Medical must be kept  confidential  and not
disclosed  to  third  parties.  We  cannot  assure  you,  however,   that  these
non-disclosure  agreements  and other  safeguards  will protect our  proprietary
information and know-how,  or that they will provide us adequate remedies in the
event of  unauthorized  use or disclosure of confidential  information.  We also
cannot  assure  you that  others  will be unable  to  develop  such  information
independently.

     We also rely on unpatented proprietary technology and trade secrets that we
seek to protect in part through  confidentiality  agreements  with employees and
other  parties.  We cannot  assure you that the employees and other parties will
comply with these agreements, that we will have adequate remedies for any breach
or that  we can  meaningfully  protect  our  rights  to  unpatented  proprietary
technology  in any other way.  We also  cannot  assure you that  others  will be
unable  independently to develop or otherwise acquire  substantially  equivalent
proprietary  technology and trade secrets, or that they will keep the technology
secret. The disclosure of this type of information could have a material adverse
effect on our business, financial condition and results of operations.

     The medical device industry has seen much litigation with respect to patent
and other  intellectual  property rights.  Litigation may be necessary for us to
enforce our  patents,  to protect  our trade  secrets  and  know-how,  to defend
against  claimed  infringement  of others= rights or to determine the ownership,
scope or  validity  of the  proprietary  rights of Possis  Medical  and  others.
However,  litigation  also could be extremely  costly to us and could divert our
resources and efforts away from our products and day-to-day business matters. If
the  litigation  had an adverse  outcome,  it could  subject  us to  substantial
liabilities to third parties, require us to seek licenses from third parties and
prevent  us from  manufacturing,  selling  or using our  products.  Any of these
results  could  have  a  material  adverse  effect  on our  business,  financial
condition and results of operations.

     Acceptance  of our  products  and our profits may be limited by  inadequate
third-party reimbursements.

     Health care  providers  (such as hospitals  and  physicians)  that purchase
medical devices like the AngioJet System for the treatment of patients generally
rely on third-party  payors like Medicare,  Medicaid and private insurance plans
to reimburse all or part of the costs  associated  with the health care services
they provide.  In certain foreign markets,  the pricing of and profits generated
by health care  products  are subject to  government  control.  In some  states,
Medicare  and  Medicaid  payors  reimburse   hospitals  for  inpatient   medical
procedures at a pre-determined rate based on diagnosis-related  groups. If these
rates do not include, and third-party payors do not otherwise provide,  adequate
reimbursement  to  health  care  providers  for the  cost of our  products,  our
products will not gain wide market  acceptance  and our  financial  results will
suffer.

     The Health Care Financing  Administration is the federal agency responsible
for administering the Medicare system.  HCFA has prohibited Medicare from paying
for certain revolutionary (new) procedures that are still under investigation or
that  are not  deemed  safe  and  effective  for the  condition  being  treated.
Therefore,  even  if a  device  has  FDA  approval,  Medicare  payors  may  deny
reimbursement  if they conclude that the device is  experimental or that it will
not improve the condition being treated.

<PAGE>

     The market for our  products  also could be  adversely  affected  by future
legislation to reform the nation=s  health care system or by changes in industry
practices regarding  reimbursement.  We cannot assure you that the reimbursement
rates of  third-party  payors  will  allow us to price  our  products  at levels
sufficient  to  realize  an  appropriate  return on our  investment  in  product
development.

     We depend on key personnel.

     We depend  greatly  on a limited  number of key  management  and  technical
personnel. Moreover, because of the highly technical nature of our business, our
ability  to  continue  our   technological   developments   and  to  market  our
productsCand  thereby develop a competitive edge in the  marketplaceCdepends  in
large part on our  ability to attract  and retain  qualified  technical  and key
management  personnel.  Competition for qualified  personnel is intense,  and we
cannot assure you that we will be able to attract and retain the  individuals we
need.  The loss of key personnel,  or our inability to hire or retain  qualified
personnel,  could  have a material  adverse  effect on our  business,  financial
condition and results of operations.

     We may be subject to product liability claims, for which insurance coverage
may be insufficient.

     The  manufacture  and  sale  of our  products  may  subject  us to  product
liability  claims.  The United  States  Supreme  Court has held that,  despite a
company's  compliance  with  FDA  regulations,  it  may  not  be  shielded  from
common-law negligent-design claims or manufacturing and labeling claims based on
state laws.  Product liability  insurance is expensive and in the future may not
be  available  on  acceptable  terms,  if at all. We cannot  assure you that the
coverage limits of our product liability  insurance policies will be adequate if
a product liability claim is brought against us. A successful claim or series of
claims  against us that  exceeds our  insurance  coverage  could have a material
adverse effect on our business,  financial  condition and results of operations.
Moreover,  whether or not successful,  product liability litigation would likely
divert  the  attention  of our key  personnel  and could  adversely  affect  our
reputation and the  marketability of our technology and products.  Consequently,
any product  liability  litigation  could have a material  adverse effect on our
business, financial condition and results of operations.

     It is uncertain  whether we will be able to obtain  funding  sufficient  to
meet our future capital needs.

     We anticipate that cash on hand, the interest expected to be earned on such
cash and expected  revenues will be sufficient to finance our  operations for at
least the next twelve to eighteen  months.  However,  we cannot  assure you that
additional  capital will not be needed sooner. We anticipate that we may need to
raise  additional  funds in the  future.  We cannot  assure you that  additional
capital will be  available  to us or that it will be  available on  satisfactory
terms. Raising additional capital through equity financing may dilute the equity
interests of the  shareholders  of the company,  and debt  financing may involve
restrictive covenants. Failure to secure additional financing if and when needed
could have a material  adverse effect on our business,  financial  condition and
results of operations.

     The securities market is volatile, and our common stock price may fluctuate
widely.

     The market price of our stock has in the past been  subject to  significant
fluctuations.  Moreover,  the markets for equity securities in general,  and for
those of medical device  manufacturers in particular,  have been volatile in the
past,  and the price of our common  stock in the future could be subject to wide
fluctuations in response to quarterly variations in operating results,  news and
product announcements,  trading volume, general market trends and other factors.
We cannot  assure you that our  common  stock will trade in the future at market
prices in excess of its current market price.

     We have in place certain protections against takeover attempts.

     Of the 100 million  shares of capital  stock  authorized by our amended and
restated  articles of  incorporation,  79 million shares are  undesignated.  Our
board of  directors  may  issue  the  undesignated  shares on terms and with the
rights, preferences and designations determined by the board without shareholder
action. In addition, we have adopted a shareholder rights plan that provides for
the  exercise of  preferred  share  purchase  rights  when a person  becomes the
beneficial  owner of 15% or more of our  outstanding  common  stock  (subject to
certain exceptions). We also are subject to provisions of the Minnesota Business
Corporation  Act that limit the voting  rights of shares  acquired in  specified
types  of   acquisitions   and  that  restrict   specified   types  of  business
combinations. The existence or issuance of "blank check" stock, the existence of
our shareholder  rights plan and the effect of  anti-takeover  provisions  under
Minnesota  law,  individually  or in the  aggregate,  may  discourage  potential
takeover attempts and delay, defer or prevent a change in control. They also may
make  the  removal  of  management  more  difficult,  which  could  deprive  our
shareholders  of  opportunities  to sell  their  shares  at prices  higher  than
prevailing market prices.

<PAGE>

     We depend on single-source suppliers.

     We depend on single-source  suppliers for some of the raw materials used in
the manufacture of our products.  If we cannot obtain key raw materials from our
suppliers,  we cannot assure you that the materials will be available from other
suppliers,  that other  suppliers  will agree to supply the  materials to us, or
that our use of the other  suppliers  would be approved by the FDA.  Although we
believe our supply of raw  materials  currently is adequate for the needs of our
business, we cannot assure you that new sources of supply will be available when
needed.  Any  interruption  in our supply of raw materials could have a material
adverse effect on our ability to manufacture  our products until a new source of
supply is located and,  therefore,  could have a material  adverse effect on our
business, financial condition and results of operations.

     We have not paid dividends on our stock.

     We have never paid cash dividends on our common stock. We currently  intend
to retain  all  future  earnings,  if any,  for use in our  business  and do not
anticipate paying cash dividends in the near future.

                       WHERE YOU CAN FIND MORE INFORMATION

     We file annual,  quarterly and special reports,  proxy statements and other
information  with the SEC.  You may  read and copy any  document  we file at the
SEC's public reference room at 450 Fifth Street N.W., Washington, D.C. 20549, or
at the SEC's public  reference  rooms in New York,  N.Y. and Chicago,  Illinois.
Please  call the SEC at  1-800-SEC-0330  for further  information  on the public
reference rooms. Our SEC filings also are available to the public from the SEC=s
website at  http://www.sec.gov.  You also may inspect reports,  proxy statements
and other  information  concerning Possis Medical at the offices of the National
Association of Securities Dealers, 1735 K. Street N.W., Washington, D.C. 20006.

     The SEC allows us to  "incorporate  by reference" the  information  that 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
considered to be part of this  prospectus,  and later  information  that we file
with the SEC  automatically  will  update  and  supersede  this  prospectus.  We
incorporate  by reference  the following  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, as amended, until the selling shareholders sell
all of the shares:

      x  our annual report on Form 10-K for the fiscal year ended July 31, 1999;

      x  our quarterly reports on Form 10-Q for the quarters ended October 31,
         1999 and January 31, 2000;

      x  our current report on Form 8-K filed on March 14, 2000; and

      x  the description of our common stock contained in any of our
         registration statements filed under the Exchange Act, and any amendment
         or report filed for the purpose of updating the description.

     Upon written or oral request,  we will provide a copy of these filings,  at
no cost, to each person to whom a copy of this prospectus is delivered.  You may
request a copy of these  filings by writing or  telephoning  us at the following
address:

<PAGE>

                                Irving R. Colacci
                              Possis Medical, Inc.
                          9055 Evergreen Boulevard N.W.
                          Minneapolis, Minnesota 55433
                                 (612) 780-4555

     You  should  rely only on the  information  incorporated  by  reference  or
provided in this  prospectus or any  supplement.  We have not authorized  anyone
else to provide you with different information.  The selling shareholders should
not make an offer of the shares in any state  where the offer is not  permitted.
You should not assume that the  information in this prospectus or any supplement
to this  prospectus  is accurate as of any date other than the date on the cover
page of this prospectus or any supplement.

                           ABOUT POSSIS MEDICAL, INC.

     We develop,  manufacture and market innovative medical products that assist
interventionalists and surgeons in treating  cardiovascular or vascular diseases
or  conditions  requiring  vascular  intervention.   Our  primary  product,  the
AngioJet7  RheolyticJ  Thrombectomy System, is marketed in the United States for
blood clot  removal  from  dialysis  access  grafts and  coronary  arteries  and
coronary bypass grafts.  Two of our three  FDA-approved  productsCthe  AngioJet7
System  and the  Perma-Seal7  Dialysis  Access  GraftCare  in  early  stages  of
commercialization in the United States, Europe, Japan and Canada.

     Our  objective  is to  become a  leading  supplier  of  innovative  medical
products for the treatment of cardiovascular or vascular diseases or conditions.
We will pursue our strategy by seeking to demonstrate the safety and efficacy of
our products,  developing  relationships with leading  clinicians,  establishing
world-class manufacturing processes and commercializing our products rapidly. We
also intend to expand our product  portfolio by applying  our  existing  product
technology  to  additional   cardiovascular  or  vascular  treatment  needs,  by
developing new product  technology and, in some cases, by using existing product
technology in non-vascular applications.

     Our principal  executive  offices are located at 9055  Evergreen  Boulevard
N.W., Minneapolis, Minnesota 55433, telephone number (612) 780-4555. For further
information  concerning  Possis  Medical,  see the section titled "Where You Can
Find More Information."

     The AngioJet7 RheolyticJ Thrombectomy System

     The  development of blood clots in various parts of the vascular  system is
common and is a leading  cause of death.  Our  AngioJet  System is  designed  to
remove  blood  clots  from  large-diameter  and  small-diameter   blood  vessels
throughout the body in a rapid,  minimally invasive and  cost-effective  manner.
The AngioJet System delivers jets of pressurized  saline solution  through small
openings in the tip of a  disposable  catheter  positioned  near the blood clot,
breaking  the clot into tiny  particles  that are  propelled  back  through  the
catheter  out of the  patient=s  body and into a disposable  collection  bag. We
believe our  AngioJet  System is a novel  approach to the removal of blood clots
from  arteries,  veins  and  grafts  and  offers  advantages  over  thrombolytic
(clot-dissolving)  drugs and  other  mechanical  devices,  the  current  primary
methods of treatment.  In early stages of commercialization and in U.S. clinical
trials,  the AngioJet System has  demonstrated the ability to remove blood clots
within seconds to minutes without surgical  intervention and without the risk of
uncontrolled bleeding.

     A two-phase  clinical  trial  involving  the use of the AngioJet  System to
remove blood clots from peripheral arteries and vascular grafts was completed in
March 1994. On December 6, 1996,  we received FDA  clearance to begin  marketing
the AngioJet  System in the United  States with label claims for use in removing
blood clots from  vascular  access  grafts used by patients on kidney  dialysis.
Until  March  1999,  this was the only use for which  the  AngioJet  System  was
approved.

<PAGE>

     In March 1996 we received FDA approval to initiate Phase 2 clinical testing
of our AngioJet  System for use in removing  blood clots from coronary  arteries
and  bypass  grafts  supplying  blood to the heart  muscle.  In May 1998 the FDA
agreed to permit the disclosure of results of our major coronary  clinical trial
in the United  States,  the VeGAS 2 Coronary  Clinical  Trial.  These  important
clinical  results,  involving  approximately  350  patients,  were  presented in
October and November 1998 and showed the AngioJet  System to be much faster than
urokinase,  a clot-dissolving  drug, removing blood clots in minutes rather than
the hours  required by  urokinase.  Additionally,  in most cases,  the  AngioJet
System also achieved more complete thrombus removal, caused fewer adverse events
and  resulted in lower  treatment  costs than  urokinase.  Results of a 12-month
study  presented  in March  1999  also  showed  the  AngioJet  System to be more
cost-effective than urokinase.

     In August  1998 we  submitted  additional  information  in  support  of our
existing 510(k)  application to the FDA seeking clearance to expand label claims
to include use in peripheral  arteries and bypass  grafts in the United  States.
This  application  is still  pending  with the FDA.  We also  filed a  premarket
approval  application  with the FDA in September  1998  seeking  U.S.  marketing
approval of the AngioJet  System for coronary artery and bypass graft blood clot
removal.  We asked the FDA for broad labeling claims  including  AngioJet System
use in native  coronary  arteries and saphenous vein bypass grafts,  in patients
experiencing   angina   (chest   pain)  and  heart   attack,   and  in  patients
contraindicated  for drug  lysis  therapy.  On March 12,  1999,  the FDA gave us
approval to market the AngioJet System for use in coronary arteries and coronary
bypass grafts, granting us all the usage indications we requested.

     In April 1999,  results of our Japanese  Coronary  AngioJet System clinical
trials were published in the American  Journal of Cardiology.  The trial results
demonstrated  full  restoration  of blood flow in all 29 patients  who  received
AngioJet  treatment  for severe  acute heart  attacks in native  coronary  blood
vessels.  Our Japanese  distributor has submitted  these results,  together with
similar results  obtained from treating 32 patients at Toho University in Japan,
to the  Japanese  Ministry  of Health and  Welfare  during the summer of 1999 to
support  our request for  approval  to market the  AngioJet  System in Japan for
coronary use.

     In  December  1997 we received  approval  to begin a clinical  trial of the
AngioJet  System for use in the  treatment of stroke  caused by blocked  carotid
arteries,  the main vessels supplying blood to the brain.  Patient enrollment in
the trial  began in August  1998,  and the first  patient was treated in January
1999. Five patients were enrolled in the study before it was closed down in late
1999 due to the FDA's  approval of the  cerebrovascular  stroke  clinical  trial
described  below.  Strokes that occur in  cerebrovascular  circulation  are more
common than those caused by blocked carotid arteries, and a larger U.S. clinical
trial is planned for  investigating  the use of the AngioJet  System in treating
cerebrovascular strokes.

     In  September  1999  we  submitted  an  investigational   device  exemption
application  to the FDA asking for  permission to begin a clinical  trial of our
AngioJet  System  in  treating  cerebrovascular  stroke.  The FDA  approved  the
application in October 1999.  Phase 1 of the trial will enroll up to 30 patients
for AngioJet System treatment at six hospitals.  Completion of the Phase 1 trial
will lead to a Phase 2 trial to support  FDA  marketing  approval  for  AngioJet
System use in treating ischemic stroke,  which is caused by oxygen starvation of
the brain tissue.  As of March 2000, we have hospital  review board approval and
signed  contracts  at four of the six trial sites and expect to begin  enrolling
ischemic stroke patients during the third quarter of fiscal 2000.

     The Perma-Flow7 Coronary Bypass Graft

     The Perma-Flow  Coronary Bypass Graft is a synthetic graft designed for use
in coronary artery bypass surgery. Bypass surgery is performed to treat impaired
blood flow to portions of the heart. In bypass surgery, physicians generally use
patients' own vessels to complete the bypasses. However, sometimes patients= own
vessels are insufficient or inadequate for use in bypass surgery. Our Perma-Flow
Coronary  Bypass  Graft is intended to serve as a  substitute  for native  blood
vessels in  patients  whose own  vessels  cannot be used in bypass  surgery.  We
believe the Perma-Flow  Graft  ultimately may be used as a substitute for native
saphenous  veins,  thus  avoiding  the trauma and  expense  associated  with the
surgical  harvesting of native veins. On May 4, 1998, we received a Humanitarian
Device  Exemption from the FDA for U.S.  marketing of the Perma-Flow  Graft.  We
have stopped  enrollment  in Phase 2 of a FDA clinical  trial of the  Perma-Flow
Graft and  currently  are seeking a strategic  alliance  with or sale to a third
party in order to maximize the value of our entire  vascular graft  portfolio to
our shareholders.

<PAGE>

     The Perma-Seal7 Dialysis Access Graft

     The Perma-Seal Dialysis Access Graft is a self-sealing synthetic graft used
as a point of  vascular  access in kidney  dialysis  patients.  We  believe  the
Perma-Seal Graft offers  advantages over currently used synthetic grafts because
of its  needle-hole  sealing  capability.  We  believe  this  characteristic  is
effective in sealing puncture sites in the grafts with minimal  compression time
and bleeding  when  compared  with other  currently  available  graft  products,
resulting in shortened  dialysis  sessions and reduced  administrative  time and
costs per patient. In addition, because of its ability to seal a needle puncture
without  depending on tissue  ingrowth,  the Perma-Seal Graft provides an option
for patients who require dialysis  immediately after implant.  We filed a 510(k)
application  for  marketing  authorization  with  the  FDA in  August  1994.  In
September  1998, the FDA gave us approval to market the Perma-Seal  Graft in the
United States.  In December 1998 we entered into an exclusive  worldwide  supply
and  distribution  agreement  for the  Perma-Seal  Graft  with  Horizon  Medical
Products,  Inc., a Georgia specialty medical device company focused on marketing
vascular products.

     Other Developments

     In December  1998, we submitted a 510(k)  application to the FDA requesting
marketing  clearance  for three  expanded  ePTFE  synthetic  vascular  grafts of
varying diameters and wall  thicknesses.  The ePTFE grafts are the most commonly
used synthetic grafts in peripheral vessel bypass procedures, including dialysis
access grafts.  In February  1999, we received  clearance from the FDA to market
the three expanded ePTFE grafts.

                              SELLING SHAREHOLDERS

     We have agreed to  register  initially  1,912,859  shares for resale by the
selling  shareholders.  This number  includes  1,594,049  shares of common stock
owned by the selling shareholders and 318,810 shares of common stock that may be
issued upon the  exercise of warrants  owned by the selling  shareholders.  This
number does not include an indeterminate number of additional shares that may be
registered  and issued in accordance  with Rule 416 under the  Securities Act of
1933 to prevent dilution of the common stock resulting from stock splits,  stock
dividends or other events.

     The following table lists the selling shareholders and the number of shares
they beneficially own and may sell pursuant to this prospectus.

<PAGE>

<TABLE>
<CAPTION>

Name of Selling             Number of Shares of      Number of Shares of      Maximum Number of     Number of Shares of
Shareholder                     Common Stock         Common Stock Subject     Shares to Be Sold        Common Stock
                             Beneficially Owned          to Warrants          Pursuant to this      Beneficially Owned
                                Prior to the          Beneficially Owned      Prospectus(1)(2)     After the Offering(1)
                                  Offering          Prior to the Offering
- - --------------------------  ---------------------   -----------------------  --------------------  ----------------------
- - --------------------------  ---------------------   -----------------------  --------------------  ----------------------
<S>                           <C>                         <C>                   <C>                     <C>
The Anglo Irish Global           80,000                    13,000                24,000                  69,000
Equity Fund
Charles E. White II              33,599                     3,220                19,319                  17,500
Clarion Capital                  15,940                     3,188                19,128                       0
Corporation
Clarion Partners, L.P.           12,625                     2,525                15,150                       0
Clarion Offshore Fund             4,910                       982                 5,892                       0
Ltd.
Dennis Hanish                    16,833                     3,367                20,200                       0
E. Michael Brown                 67,888                     3,578                21,466                  50,000
Crimson Biomedical Fund,         38,257                     7,651                45,908                       0
L.P.
Geoffrey H. Galley               43,283                    31,136                51,940                  22,479
Ibrahim Arinc                       213                        43                   256                       0
John C. Bergmann                350,442                    17,888               107,330                 261,000
LBI Group Inc.                  478,215                   129,303               573,858                  33,660
Lisa E. Wolf                      1,063                       213                 1,276                       0
Lynn L. Rogers                   27,833                     5,367                32,200                   1,000
North American Growth            13,032                     2,181                 3,638                  11,575
Investments Ltd.
Halifax Fund L.P.               212,540                    42,508               255,048                       0
Elkhorn Partners                162,316                     2,683                16,099                 148,900
Perkins Opportunity Fund         57,386                    11,477                68,863                       0
Roanoke Partners, L.P.           18,000                     3,600                21,600                       0
Cactus Partners                  19,677                     3,935                23,612                       0
Special Situations               47,381                     8,003                21,519                  33,865
Cayman Fund, L.P.
Special Situations Fund         142,144                    24,012                64,559                 101,597
III, L.P.
The Tail Wind Fund Ltd.         371,945                   136,446               446,334                  62,057
W. Lincoln Mossop, Jr.          199,233                     4,472                26,832                 176,873
Wilson G. Saville, II            25,035                     4,472                26,832                   2,675
- - --------------------------  ---------------------   -----------------------  --------------------  ----------------------
- - --------------------------  ---------------------   -----------------------  --------------------  ----------------------
Total                         2,439,790                   465,250             1,912,859                 992,181

</TABLE>
____________________
(1)  Assumes the sale of all of the shares offered by this prospectus.
(2)  Includes warrants to purchase a total of 318,810 shares of common stock.


<PAGE>

                              PLAN OF DISTRIBUTION

     We are  registering  the shares on behalf of the selling  shareholders.  As
used in this prospectus,  "selling shareholders"  includes donees,  pledgees and
transferees  selling shares received from a named selling  shareholder after the
date of this prospectus.  The selling  shareholders may offer and sell from time
to time all or a portion of their shares of common stock in one or more types of
transactions  (which may  include  block  transactions)  on the Nasdaq  National
Market,  in  privately  negotiated  transactions,  through  put or call  options
transactions,  through short sales, or through a combination of these methods of
sale, at fixed prices that may be changed,  at market  prices  prevailing at the
time of sale, at prices  related to such market prices or at negotiated  prices.
Sales may be made to or through brokers or dealers who may receive  compensation
in  the  form  of  discounts,   concessions  or  commissions  from  the  selling
shareholders or the purchasers of the shares. As of the date of this prospectus,
we are not aware of any  agreement,  arrangement  or  understanding  between any
broker or dealer and any of the selling  shareholders.  The selling shareholders
also may resell all or a portion of their shares in open market  transactions in
reliance upon Rule 144 of the  Securities  Act,  provided they meet the criteria
and conform to the  requirements  of Rule 144.  There is no  assurance  that the
selling shareholders will sell any or all of the shares they offer for sale.

     The selling  shareholders and any brokers or dealers who participate in the
sale of the shares may be deemed to be "underwriters"  within the meaning of the
Securities  Act.  In that  event,  any  commissions  received  by the brokers or
dealers and any profits  realized by them on the resale of shares  purchased  by
them may be  deemed  to be  underwriting  commissions  or  discounts  under  the
Securities  Act.   Because  the  selling   shareholders  may  be  deemed  to  be
"underwriters"   within  the  meaning  of  the   Securities   Act,  the  selling
shareholders  will be subject to the  prospectus  delivery  requirements  of the
Securities  Act. We have informed the selling  shareholders  that their sales in
the market must comply with the requirements of the rules and regulations of the
Exchange Act.

     We will pay all expenses  associated  with the  registration of the shares,
and the selling  shareholders  will pay all their  expenses other than specified
legal and due  diligence  expenses  that  will be  reimbursed  by us.  Brokerage
commissions and similar selling  expenses,  if any,  attributable to the sale of
the shares will be paid by the selling shareholders. We have agreed to indemnify
the  selling   shareholders   against  certain  losses,   claims,   damages  and
liabilities, including liabilities under the Securities Act.

                                     EXPERTS

     The  consolidated  financial  statements  and related  financial  statement
schedule  incorporated  by  reference  in this  prospectus  have been audited by
Deloitte & Touche LLP, independent auditors,  as stated in their reports,  which
have been  incorporated by reference,  and are included in reliance upon reports
of such firm given upon its authority as experts in accounting and auditing.

                                  LEGAL MATTERS

     The validity of the shares offered in this  prospectus has been passed upon
for us by Dorsey & Whitney LLP, 220 South Sixth Street,  Minneapolis,  Minnesota
55402.





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