EXHIBIT 10.3
                             AEQUITRON MEDICAL, INC.
                              AMENDED AND RESTATED
                             1988 STOCK OPTION PLAN


     1. Purpose.  The purpose of the Aequitron  Medical,  Inc. 1988 Stock Option
Plan is to  provide a  continuing,  long-term  incentive  to  selected  eligible
officers and key employees of Aequitron Medical, Inc. (the "Corporation") and of
any subsidiary  corporation of the  Corporation  (the  "Subsidiary"),  as herein
defined and to all Non-Employee Directors of the Corporation; to provide a means
of rewarding outstanding performance;  and to enable the Corporation to maintain
a  competitive  position  to  attract  and retain key  personnel  necessary  for
continued growth and profitability.

     2.  Definitions.  The following words and phrases as used herein shall have
the meanings set forth below:

     2.1 "Board" shall mean the Board of Directors of the Corporation.

     2.2 "Change in Control" shall mean the time at which any entity,  person or
group (other than the  Corporation,  any  subsidiary of the  Corporation  or any
savings,  pension or other  benefit plan for the benefit of any employees of the
Corporation or its  subsidiaries)  which prior to such time  beneficially  owned
less than twenty  percent (20%) of the then  outstanding  Common Stock  acquires
such additional shares of Common Stock in one or more transactions,  or a series
of  transactions,  such that following such  transaction  or  transactions  such
entity,  person or group  beneficially  owns,  directly  or  indirectly,  twenty
percent (20%), or more, of the outstanding Common Stock.

     2.3 "Code" shall mean the Internal Revenue Code of 1986, as amended.

     2.4 "Committee" shall mean the Stock Option Committee of the Board, or such
other  committee of the Board as may be  designated  by the Board,  from time to
time, for the purpose of  administering  this plan as  contemplated by Article 3
hereof.

     2.5 "Common  Stock"  shall mean the common  stock,  $.01 par value,  of the
Corporation.

     2.6  "Corporation"   shall  mean  Aequitron  Medical,   Inc.,  a  Minnesota
corporation.

     2.7  "Non-Employee  Directors"  shall mean members of the Board who are not
employees of the Corporation or any Subsidiary.


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     2.8  "Fair  Market  Value"  of any  security  on any  given  date  shall be
determined  by the  Committee  as  follows:  (a) if the  security  is listed for
trading on one or more national securities exchanges, or is traded on the NASDAQ
National  Market  System,  the last reported  sales price on the principal  such
exchange or NASDAQ System on the date in question, or if such security shall not
have been  traded on such  principal  exchange on such date,  the last  reported
sales price on such  principal  exchange  or the NASDAQ  System on the first day
prior  thereto on which such  security was so traded;  or (b) if the security is
not listed for trading on a national  securities exchange or the NASDAQ National
Market  System,  but is traded in the  over-the-counter  market,  including  the
NASDAQ  System,  the mean of the highest and lowest bid prices for such security
on the date in question, or if there are no such bid prices for such security on
such date,  the mean of the highest and lowest bid prices on the first day prior
thereto  on  which  such  prices  existed;  or (c) if  neither  (a)  nor  (b) is
applicable,  by any means deemed fair and  reasonable  by the  Committee,  which
determination shall be final and binding on all parties.

     2.9 "ISO" shall mean any stock option  granted  pursuant to this Plan as an
"incentive stock option" within the meaning of Section 422 of the Code.

     2.10 "NQO" shall mean any stock option granted  pursuant to this Plan which
is not an ISO.

     2.11 "Option"  shall mean any stock option  granted  pursuant to this Plan,
whether an ISO or an NQO.

     2.12  "Optionee"  shall  mean any  person  who is the  holder  of an Option
granted pursuant to this Plan.

     2.13 "Plan" shall mean this 1988 Stock Option Plan of the Corporation.

     2.14 "Subsidiary" shall mean any corporation which at the time qualifies as
a subsidiary of the Corporation under Section 425(f) of the Code.

     3. Shares  Available  Under Plan.  The number of shares which may be issued
pursuant to options granted under this Plan shall not exceed 1,600,000 shares of
the Common Stock of the Corporation; provided, however, that shares which become
available as a result of cancelled,  unexercised,  lapsed or terminated  options
granted  under this Plan shall be  available  for  issuance  pursuant to options
subsequently granted under this Plan. The shares issued upon exercise of options
granted  under  this  Plan may be  authorized  and  unissued  shares  or  shares
previously acquired or to be acquired by the Corporation.

     4. Administration

     4.1 The Plan will be  administered by the Board of Directors or a Committee
of at least three  members  selected by the Board,  and who have not at any time
during the twelve month period before  service on the  Committee  ("Committee"),
been  eligible to receive any Option under the Plan,  or under any other benefit
plan of the  Corporation  or any of its  affiliates  entitling the  participants
therein  to acquire  stock or stock  options  of the  Corporation  or any of its
Subsidiaries,  except for the granting of options that are exempt under SEC Rule
16b-3  or any  successor  rule.  The  Board  or such  Committee  is  hereinafter
described as the Committee.
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     4.2 The Committee will have plenary authority, subject to provisions of the
Plan,  to determine  when and to whom Options will be granted,  the term of each
Option, the number of shares covered by it, the participation by the Optionee in
other plans,  and any other terms or  conditions  of each Option.  The Committee
shall  determine  with respect to each grant of an Option  whether a participant
shall  receive an ISO or an NQO.  The  number of shares,  the term and the other
terms and conditions of a particular  kind of Option need not be the same,  even
as to  options  granted  at  the  same  time.  The  Committee's  recommendations
regarding option grants and terms and conditions thereof will be conclusive.

     4.3 The Committee  will have the sole  responsibility  for  construing  and
interpreting  the Plan, for  establishing and amending any rules and regulations
as it deems  necessary or desirable for the proper  administration  of the Plan,
and for resolving all questions  arising under the Plan.  Any decision or action
taken by the Committee arising out of or about the construction, administration,
interpretation  and effect of the Plan and of its rules and regulations will, to
the extent  permitted  by law,  be within  its  absolute  discretion,  except as
otherwise  specifically  provided herein,  and will be conclusive and binding on
all  Optionees,  all  successors,  and any other person,  whether that person is
claiming under or through any Optionee or otherwise.

     4.4 The Committee  will  designate one of its members as chairman.  It will
hold its meetings at the times and places as it may determine. A majority of its
members will constitute a quorum,  and all  determinations of the Committee will
be made by a majority of its members.  Any determination  reduced to writing and
signed by all  members  will be fully as  effective  as if it had been made by a
majority  vote at a meeting duly called and held.  The  Committee  may appoint a
secretary,  who need not be a member of the  Committee,  and may make such rules
and regulations for the conduct of its business as it may deem advisable.

     4.5 No member of the Committee will be liable, in the absence of bad faith,
for any act or omission with respect to his services on the  Committee.  Service
on the Committee will  constitute  service as a member of the Board, so that the
members of the Committee will be entitled to  indemnification  and reimbursement
as Board members pursuant to its By-laws.

     4.6 The Committee  will  regularly  inform the Board as to its actions with
respect to all Options  granted under the Plan and the terms and  conditions and
any such  Options in a manner,  at any  times,  and in any form as the Board may
reasonably request.


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     4.7 Any other  provision of the Plan to the contrary  notwithstanding,  the
Committee is authorized to take such action as it, in its  discretion,  may deem
necessary  or advisable  and fair and  equitable to Optionees in the event of: a
Change in Control of the  Corporation;  a tender,  exchange or similar offer for
all or any part of the Common  Stock made by any entity,  person or group (other
than the Corporation,  any Subsidiary of the Corporation or any savings, pension
or other  benefit plan for the benefit of employees  of the  Corporation  or its
Subsidiaries);  a  merger  of  the  Corporation  into,  a  consolidation  of the
Corporation  with, or an acquisition of the Corporation by another  corporation;
or a sale or transfer of all or substantially all of the  Corporation's  assets,
Such action, in the Committee's discretion, may include (but shall not be deemed
limited to): establishing,  amending or waiving the forms, terms,  conditions or
duration of Options so as to provide for earlier,  later, extended or additional
terms for exercise of the whole, or any installment, thereof; alternate forms of
payment;  or other  modifications.  The  Committee  may  take  any such  actions
pursuant  to this  Section  4.7 by  adopting  rules or  regulations  of  general
applicability  to all  Optionees,  or to certain  categories  of  Optionees;  by
amending or waiving  terms and  conditions  in stock  option  agreements;  or by
taking action with respect to individual  Optionees.  The Committee may take any
such  actions  before or after the  public  announcement  of any such  Change in
Control,  tender offer,  exchange offer, merger,  consolidation,  acquisition or
sale or transfer of assets.

     5. Participants.

     5.1  Participation  in this Plan shall be limited to  officers  and regular
full-time  executive,  administrative,  professional,  production  and technical
employees of the  Corporation  or of a  Subsidiary,  and to all Directors of the
Corporation.  Non-Employee  Directors of the  Corporation  shall only be able to
participate under this Plan as specified in Section 14 hereof.

     5.2 Subject to other provisions of this Plan, Options may be granted to the
same participants on more than one occasion.

     5.3 Except with respect to Options granted to Non-Employee  Directors under
Section 14, the  Committee's  determination  under the Plan  including,  without
limitation,  determination of the persons to receive Options,  the form,  amount
and type of such  Options,  and the terms and  provisions of Options need not he
uniform  and may be made  selectively  among  otherwise  eligible  participants,
whether or not the participants are similarly situated.

     6. Terms and Conditions.

     6.1 Each  Option  granted  under the Plan shall be  evidenced  by a written
agreement,  which  shall be subject to the  provisions  of this Plan and to such
other terms and conditions as the Corporation may deem appropriate.

     6.2 Each  Option  agreement  shall  specify the period for which the Option
thereunder is granted (which in no event shall exceed ten years from the date of
the grant for any Option granted  pursuant to Section 6.3(a) hereof,  five years
from the date of grant for any Option granted  pursuant to 6.3(b) hereof and ten
years  and one day  from  the date of grant  for any  Option  designated  by the
Committee  as an NQO) and shall  provide that the Option shall expire at the end
of such period;  provided,  however, the term of each Option shall be subject to
the power of the  Committee,  among other  things,  to  accelerate  or otherwise
adjust the terms for  exercise of Options  pursuant to Section 4.7 hereof in the
event of the occurrence of any of the events set forth therein.

     6.3 The exercise  price per share shall be  determined  by the Committee at
the time any Option is granted and, if the Option is an ISO, shall be determined
as follows:

          (a) For  employees  who do not own  stock  possessing  more  than  ten
     percent (10%) of the total combined voting power of all classes of stock of
     the  Corporation  or of any  Subsidiary,  the ISO exercise  price per share
     shall not be less than one hundred  percent  (100%) of Fair Market Value of
     the Common Stock of the  Corporation on the date the Option is granted,  as
     determined by the Committee.

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          (b) For employees who own stock possessing more than ten percent (10%)
     of  the  total  combined  voting  power  of all  classes  of  stock  of the
     Corporation  or of any  Subsidiary,  the ISO exercise price per share shall
     not be less than one hundred ten percent (110%) of the Fair Market Value of
     the Common Stock of the  Corporation on the date the Option is granted,  as
     determined by the Committee.

     6.4 An Option shall be exercisable at such time or times,  and with respect
to such minimum number of shares, as may be determined by the Corporation at the
time of the grant.  The Option  agreement  may require,  if so determined by the
Corporation,  that no part of the Option  may be  exercised  until the  Optionee
shall have remained in the employ of the Corporation or of a Subsidiary for such
period after the date of the Option as the Corporation may specify.

     6.5 The Corporation may prescribe the form of legend which shall be affixed
to the stock certificate  representing  shares to be issued and the shares shall
be subject to the  provisions  of any  repurchase  agreement or other  agreement
restricting the sale or transfer thereof.  Such agreements or restrictions shall
be noted on the certificate representing the shares to be issued.

     7. Exercise of Option.

     7.1 Each exercise of an Option  granted  hereunder,  whether in whole or in
part,  shall be by written  notice  thereof,  delivered to the  Secretary of the
Corporation (or such other person as he may  designate).  The notice shall state
the number of shares with respect to which the Options are being  exercised  and
shall be  accompanied by payment in full for the number of shares so designated.
Shares  shall be  registered  in the name of the  Optionee  unless the  Optionee
otherwise directs in his or her notice of election.

     7.2 Payment shall be made to the Corporation either (i) in cash,  including
certified  check,  bank  draft  or money  order  (ii) at the  discretion  of the
Corporation,  by delivering Common Stock of the Corporation already owned by the
participant  or a  combination  of Common Stock and cash for all or a portion of
the  purchase  price of the shares so  purchased.  With respect to (ii) the Fair
Market  Value  of  stock  so  delivered  shall  be  determined  as of  the  date
immediately preceding the date of exercise.

     7.3 Upon notification of the amount due and prior to, or concurrently with,
the delivery to the Optionee of a certificate  representing any shares purchased
pursuant to the exercise of an Option,  the Optionee  shall  promptly pay to the
Corporation any amount necessary to satisfy applicable  federal,  state or local
withholding tax requirements.


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     8.  Adjustments of Option Stock.  In case the shares issuable upon exercise
of any Option granted under the Plan at any time outstanding shall be subdivided
into a greater  or  combined  into a lesser  number of shares  (whether  with or
without  par  value),  the number of shares  purchasable  upon  exercise of such
Option immediately prior thereto shall be adjusted so that the Optionee shall be
entitled to receive a number of shares  which he or she would have owned or have
been  entitled to receive after the happening of such event had such Option been
exercised  immediately prior to the happening of such subdivision or combination
or any record date with respect  thereto.  An  adjustment  made pursuant to this
paragraph shall become  effective  immediately  after the effective date of such
subdivision  or  combination  retroactive  to the record date,  if any, for such
subdivision  or  combination.   The  option  price  (as  such  amount  may  have
theretofore been adjusted  pursuant to the provisions  hereof) shall be adjusted
by  multiplying  the option price  immediately  prior to the  adjustment  of the
number  of shares  purchasable  under the  Option  by a  fraction,  of which the
numerator  shall be the number of shares  purchasable  upon the  exercise of the
Option immediately prior to such adjustment,  and of which the denominator shall
be the  number of  shares so  purchasable  immediately  thereafter.  Substituted
shares of stock shall be deemed shares under Section 3 of the Plan.

     9.  Assignments.  Any Option  granted under this Plan shall be  exercisable
only by the Optionee to whom granted during his or her lifetime and shall not be
assignable or transferable  otherwise than by will or by the laws of descent and
distribution.

     10. Severance;  Death; Disability. An Option shall terminate, and no rights
thereunder  may be exercised,  if the person to whom it is granted  ceases to be
employed by the Corporation or by a Subsidiary except that:

     10.1 If the  employment  of the Optionee is  terminated by any reason other
than his or her death or  disability,  the  Optionee  may at any time within not
more than three months after termination of his or her employment,  exercise his
or her  Option  rights  but only to the  extent  they  were  exercisable  by the
Optionee on the date of termination of his or her employment; provided, however,
that if the employment is terminated by deliberate,  willful or gross misconduct
as determined by the Committee,  all rights under the Option shall terminate and
expire upon such termination.

     10.2 If the  Optionee  dies  while in the  employ of the  Corporation  or a
Subsidiary, or within not more than three months after termination of his or her
employment,  the Optionee's rights under the Option may be exercised at any time
within one year following such death by his or her personal representative or by
the person or persons to whom such rights under the Option shall pass by will or
by the laws of  descent  and  distribution,  but only to the  extent  they  were
exercisable by the Optionee on the date of death.

     10.3 If the  employment of the Optionee is terminated  because of permanent
disability,  the Optionee, or his or her legal  representative,  may at any time
within  not more  than  one year  after  termination  of his or her  employment,
exercise his or her Option  rights but only to the extent they were  exercisable
by the Optionee on the date of termination of his or her employment.

     10.4 Notwithstanding  anything contained in Sections 10.1, 10.2 and 10.3 to
the  contrary,  no  Option  rights  shall be  exercisable  by  anyone  after the
expiration of the term of the Option.

 
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     10.5 Transfers of employment  between the Corporation and a Subsidiary,  or
between Subsidiaries, will not constitute termination of employment for purposes
of any Option  granted  under this Plan.  The Committee may specify in the terms
and conditions of an Option  whether any authorized  leave of absence or absence
for military or government  service or for any other  reasons will  constitute a
termination of employment for purposes of the Option and the Plan.

     11.  Rights of  Participants.  Neither  the  participant  nor the  personal
representatives,  heirs, or legatees of such participant shall be or have any of
the rights or privileges of a shareholder  of the  Corporation in respect of any
of the shares  issuable  upon the exercise of an Option  granted under this Plan
unless and until  certificates  representing  such shares shall have been issued
and delivered to the participant or to such personal  representatives,  heirs or
legatees.

     12. Securities Registration. If any law or regulation of the Securities and
Exchange  Commission or of any other body having  jurisdiction shall require the
Corporation  or the  participant  to take  any  action  in  connection  with the
exercise of an Option, then  notwithstanding any contrary provision of an Option
agreement or this Plan, the date for exercise of such Option and the delivery of
the shares  purchased  thereunder  shall be deferred until the completion of the
necessary action. In the event that the Corporation shall deem it necessary, the
Corporation  may condition the grant or exercise of an Option granted under this
Plan  upon the  receipt  of a  satisfactory  certificate  that the  Optionee  is
acquiring  the  Option or the  shares  obtained  by  exercise  of the Option for
investment  purposes  and not with the view or intent  to  resell  or  otherwise
distribute  such  Option  or  shares.  In  such  event,  the  stock  certificate
evidencing  such  shares  shall  bear a  legend  referring  to  applicable  laws
restricting  transfer of such shares.  In the event that the  Corporation  shall
deem it necessary to register under the  Securities Act of 1933, as amended,  or
any other applicable statute, any Options or any shares with respect to which an
Option  shall  have  been  granted  or  exercised,  then the  participant  shall
cooperate  with the  Corporation  and take such action as is necessary to permit
registration or qualification of such Options or shares.

     13. Duration and Amendment.

     13.1 There is no express  limitation upon the duration of the Plan,  except
for the  requirement  of the Code that all ISOs must be granted within ten years
from the date the Plan is approved by the shareholders.

     13.2 The Board may  terminate or may amend the Plan at any time,  provided,
however,  that the Board may not,  without  approval of the  shareholders of the
Corporation,  (i) increase the maximum  number of shares as to which Options may
be granted  under the Plan,  (ii) permit the granting of ISO's at less than 100%
of Fair  Market  Value at time of grant,  (iii)  change  the class of  employees
eligible to receive Options under the Plan, or (iv) permit  Directors to receive
options under the Plan other than pursuant to Section 14 hereof.

     14. Granting of Options to Directors. Each Non-Employee Director who on and
after the date after this Plan is approved by shareholders of the Corporation is
elected or reelected as a director of the  Corporation  or whose term of offices
continues  after  such  meeting  of  Shareholders  shall  as of the date of such
election,  reelection,  or annual or special meeting automatically be granted an
option to purchase 10,000 shares of the Corporation's  Common Stock at an option
price per share equal to 100% of the Fair Market  Value of a share on such date.
In the case of a  special  meeting,  the  action  of the  holders  of  shares in
electing a Non- Employee Director shall constitute the granting of the Option to
such Director,  and, in the case of an annual meeting, the action of the holders
of shares in electing or reelecting a Non- Employee  Director  shall  constitute
the  granting  of an Option to such  Director;  and the date when the holders of
shares  shall  take such  action  shall be the date of grant of the  Option.  No
director shall receive more than one option to purchase  shares pursuant to this
Plan in any one fiscal year.  All such Options  shall be  designated as NQOs and
shall be  subject to the same terms and  provisions  as are then in effect  with
respect to  granting  of NQOs to  salaried  officers  and key  employees  of the
Corporation, except that the Option shall be exercisable as to all or any part

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of the shares subject to the Option  beginning one year from the date the Option
is  granted,  and shall  expire on the  earlier of (i) twelve  months  after the
Optionee ceases to be a director (except by death) and (ii) five years after the
date of  grant.  Notwithstanding  the  foregoing,  in the  event of a death of a
Non-Employee  Director,  any option granted to such Non-Employee Director may be
exercised  at any time  within  twelve  months  of  death  of such  Non-Employee
Director or on the date on which the option,  by its terms expire,  whichever is
earlier.  Subject to the foregoing, all provisions of this Plan not inconsistent
with the  foregoing  shall apply to Options  granted to  Directors,  except that
directors shall always have the right to deliver stock in exercise of options as
provided in Section 7.2. Upon the effective date of shareholder approval of this
Plan, the Stock Option Grant Program of the 1985 Incentive  Stock Option Plan is
terminated,  except  that  options  outstanding  or to be granted on the date of
shareholder  approval  shall  remain  outstanding  until they,  by their  terms,
expire.

     15. Approval of Shareholders. This Plan expressly is subject to approval of
holders  of a  majority  of  the  outstanding  shares  of  Common  Stock  of the
Corporation,  and if it is not so  approved on or before one year after the date
of adoption of this Plan by the Board, the Plan shall not come into effect,  and
any Options granted pursuant to this Plan shall be deemed cancelled.

     16.  Conditions of  Employment.  The granting of an Option to a participant
under this Plan who is an employee shall impose no obligation on the Corporation
to continue the employment of any participant and shall not lessen or affect the
right of the Corporation to terminate the employment of the participant.

     17.  Other  Options.  Nothing  in the Plan will be  construed  to limit the
authority  of the  Corporation  to  exercise  its  corporate  rights and powers,
including,  by way of  illustration  and not by way of limitation,  the right to
grant options for proper corporate purposes otherwise than under the Plan to any
employee or any other person, firm, corporation,  association,  or other entity,
or to grant options to, or assume options of, any person for the  acquisition by
purchase, lease, merger, consolidation,  or otherwise, of all or any part of the
business  and assets of any person,  firm,  corporation,  association,  or other
entity.





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