Norwest Bank Minnesota,                                     Term Loan and 
National Association                                        Credit Agreement

This Term Loan and Credit Agreement (the  "Agreement")  dated as of June 1, 1995
(the "Effective Date") is between Norwest Bank Minnesota,  National  Association
(the "Bank") and Aequitron Medical, Inc. (the "Borrower").

BACKGROUND

The Borrower has requested  that the Bank renew its existing  revolving  line of
credit in the amount of  $2,000,000.00,  which  line of credit  will be used for
short term working capital  purposes.  Borrowings  under this line of credit are
currently  evidenced by a promissory note dated October 1, 1994 (the "October 1,
1994 Revolving Note").

The  Borrower  has also  requested  that  the  Bank  extend  to the  Borrower  a
$2,500,000.00  term loan for  purposes of  partially  financing  the  Borrower's
purchase of the assets of CNS, Inc.

The Bank is  agreeable to meeting the  Borrower's  requests  provided  that each
credit  facility  extended  is  subject  to the  terms  and  conditions  of this
Agreement.

The Revolving Note and the Term Note (all as defined below) will collectively be
referred to as the "Notes".  The Revolving  Note, the Term Note, this Agreement,
and all "Security Documents" described in Exhibit B may collectively be referred
to as the "Documents."

In consideration of the promises  contained in this Agreement,  the Borrower and
the Bank agree as follows:

 1.      LINE OF CREDIT

 1.1     Line of Credit Amount.  During the availability period described below,
         the Bank agrees to provide a revolving  line of credit (the  "Line") to
         the  Borrower.  Outstandings  under the Line will not, at any one time,
         exceed the lesser of Two Million and 00/100 Dollars  ($2,000,000.00) or
         the Borrowing Base less the  outstanding  balance of the Term Note. The
         Borrowing Base is defined and  calculated in accordance  with Exhibit A
         to this Agreement.

 1.2     Line Availability  Period.  The Line Availability  Period will mean the
         period  from  the  Effective  Date  to  October  31,  1996  (the  "Line
         Expiration Date").

 1.3     Advances.  The  Borrower's  obligation to repay all advances made under
         the Line will be evidenced by a single  promissory note (the "Revolving
         Note")  dated  as of  the  Effective  Date  and  in  form  and  content
         acceptable to the Bank. The Revolving Note shall replace, but shall not
         satisfy,  the October 1, 1994 Revolving Note.  Reference is made to the
         Revolving Note for terms relating to interest rate, repayment and other
         conditions governing the Line.

 1.4     Mandatory  Prepayment.  If at any time the principal  outstanding under
         the Revolving Note exceeds the lesser of $2,000,000.00 or the Borrowing
         Base less the  outstanding  balance of the Term Note, the Borrower must
         immediately  prepay  the  Revolving  Note to the  extent  necessary  to
         eliminate the excess.







 2.      TERM LOAN

 2.1     Term  Loan  Amount.  The Bank  agrees  to  provide  a term  loan to the
         Borrower in the amount of Two Million Five  Hundred and 00/100  Dollars
         ($2,500,000.00)  (the "Term Loan"). The Borrower's  obligation to repay
         outstandings under the Term Loan will be evidenced by a promissory note
         (the  "Term  Note")  dated as of the  Effective  Date,  and in form and
         content acceptable to the Bank.  Reference is made to the Term Note for
         terms  relating  to  interest  rate,  repayment  and  other  conditions
         governing the Term Loan.

2.2      Term  Loan  Availability  Period.  The Term  Loan is  available  in one
         disbursement  which may be  requested  by the  Borrower on or after the
         Effective Date but no later than July 18, 1995.

 2.3     Mandatory  Prepayment.  If at any time the principal  outstanding under
         the Term Note exceeds the lesser of $2,000,000.00 or the Borrowing Base
         less the  outstanding  balance of the Revolving Note, the Borrower must
         immediately  prepay  the  Revolving  Note to the  extent  necessary  to
         eliminate the excess,  and if after  prepaying  the Revolving  Note the
         outstanding  balance of the Term Note continues to exceed the Borrowing
         Base, the Borrower will prepay the Term Note to the extent necessary to
         eliminate the excess.

 3.      EXPENSES

3.1      Application  Fee. The Borrower has fully paid,  and the Bank has earned
         and accepted,  a one-time  application fee of $5,000.00,  which will be
         applied to the loan fee payable by the  Borrower as provided in Section
         3.6.

 3.2     Non-Usage Fee.  During the Line  Availability  Period the Borrower will
         pay the Bank a  nonusage  fee of 0.45% per annum on the  average  daily
         unused amount of the Line The fee will be paid quarterly in arrears.

 3.3     Documentation   Expenses.   The  Borrower  agrees  to  pay  the  Bank's
         reasonable  expenses relating to the preparation of the Documents.  The
         Borrower also agrees to pay the Bank's future expenses  relating to any
         amendments  to the Documents  that may be necessary in the future,  and
         any expenses  relating to the collection of each  promissory note given
         by the Borrower.  Expenses include,  but are not limited to, reasonable
         attorneys'  fees,  including the allocated costs of the Bank's in-house
         counsel.

 3.4     Collection   Expenses.   The  Borrower  agrees  to  pay  all  costs  of
         collection,  including  reasonable  attorneys'  fees and legal expenses
         incurred  by the Bank in the event the  Borrower  fails to pay the Bank
         any amounts due under any promissory note or the Documents.

 3.5     Audit Expense.  The Borrower  agrees to reimburse the Bank for the cost
         of its initial  prefunding  collateral  survey and the cost of periodic
         audits of all collateral  pledged to the Bank which may be conducted at
         such  intervals as the Bank may reasonably  require.  The audits may be
         performed by employees of the Bank or independent  contractors retained
         by the Bank.

3.6      Loan Fee. The Borrower will pay a $25,000.00 loan fee in  consideration
         of the Term Loan, which is due on the Effective Date.

3.7      Miscellaneous  Expense.  The Borrower  agrees to reimburse the Bank for
         all expenses  paid to third parties  relating to the  perfection of its
         security interest in collateral pledged to the Bank.







 4.      DISBURSEMENTS AND PAYMENTS

 4.1     Requests for Advances.  Any advance permitted under this Agreement must
         be requested in a writing in the form of Exhibit B  transmitted  to the
         Bank via  facsimile,  with the original to be delivered to the Bank via
         United  States  mail.  The Bank will not  consider  any  request for an
         advance under the Line or consider disbursing the Term Loan if there is
         an event  which  is, or with  notice or the lapse of time  would be, an
         event of default under this  Agreement.  Proceeds from an advance under
         the Line or a  disbursement  under the Term Loan will be deposited into
         the Borrower's account at the Bank or disbursed in such other manner as
         the Bank and the Borrower mutually agree.

 4.2     Optional Cost of Funds Interest Rate  Advances.  According to the terms
         of the Replacement Note, the Borrower may elect interest rates based on
         the Bank's cost of funds  index.  To elect a Cost of Funds Rate Option,
         as defined in the Term  Note,  the  Borrower  must,  prior to  funding,
         request a quote from the Bank.  This request  must  designate an amount
         (the "Cost of Funds  Rate  Portion")  and a period  (the "Cost of Funds
         Interest Period"). The Cost of Funds Interest Period will be any period
         of time mutually  agreed to by the Bank and the Borrower.  The Borrower
         must orally  accept a quote at the time of receipt or it will be deemed
         rejected.  If  accepted,  the Cost of Funds Rate  Option will remain in
         effect for the Cost of Funds Interest Period specified in the quote. At
         the end of each Cost of Funds  Interest  Period  the  principal  amount
         subject to the Cost of Funds Rate  Portion  shall bear  interest at the
         Base Rate Option (as defined in the Replacement Note).

 4.3     Performance Based Rate Reductions / Premiums.  The Borrower,  depending
         on  its  financial   performance  as  measured  under  the  performance
         standards  set forth in  Sections  4.3(a) or (c),  may be entitled to a
         reduced rate of interest on its borrowings  under the Replacement  Note
         and the Term Note,  or may be subject to the payment of a rate  premium
         on such borrowings.

(a)      Rate Reduction.  The Bank shall discount the otherwise  applicable rate
         of interest in effect at any time under the  Replacement  Note or under
         the  Term  Note by  0.29%  at any  time  after  August  1,  1996 if the
         Borrower's  performance meets or exceeds all of the following  criteria
         as certified annually by the Borrower's certified public accountants in
         a certificate addressed to the Bank:

                  1) the Borrower's  net income after taxes exceeds  $575,000.00
         for each  quarter of the fiscal  year  preceding  the year in which net
         income is measured, for each fiscal quarter of the current fiscal year,
         and for each fiscal  quarter of the following  fiscal year as projected
         under the financial  projection  provided to the Bank to Section 8.1(e)
         of this Agreement;

                  2) the Borrower  remains in compliance  with all covenants set
         forth in this Agreement  regardless of whether any default is waived or
         cured by the Bank, with the exception of Section 8.1(d);

                  3) the Borrower's "B Score",  or ratio of after tax net income
         plus depreciation plus  amortization to total  liabilities,  is greater
         than 0.40 to 1.0. (this ratio shall be calculated on a rolling basis at
         the end of each month  using the  results of that month and each of the
         eleven immediately preceding months).

(b)      Effective  Date  or  Cancellation  Date  of Rate  Reduction:  Any  rate
         reduction  shall become  effective on either  August 1st or the date on
         which  the  Bank  receives  from  the   Borrower's   certified   public
         accountants the certificate of compliance  described in Section 4.3(a),
         whichever is later.  The rate reduction  shall be canceled by the Bank,
         based on its review of






         the Borrower's interim financial  statements effective on the first day
         of the quarterly  reporting  period  following the quarterly  period in
         which  the  Borrower  fails  to meet  the  rate  reduction  performance
         criteria.

(c)      Rate Increase. The Bank shall increase the otherwise applicable rate of
         interest in effect at any time under the Replacement  Note or under the
         Term Note by 0.63% whenever the Bank  determines from its review of the
         Borrower's interim financial statements that the Borrower has failed to
         comply with the following  minimum  performance  criteria in any fiscal
         quarter:

                  1)  the   Borrower's   after  tax  net  income  is  less  than
                  $250,000.00;

                  2)       the Borrower's B Score is less than 0.25 to 1.0.

(d)      Effective Date or Cancellation Date of Rate Increase. Any rate increase
         shall  become  effective  on the first day of the  quarterly  reporting
         period  following the quarterly  period in which the Borrower  fails to
         meet the minimum performance  criteria set forth in Section 4.3(c). The
         rate  increase  shall be  canceled  on the first  day of the  quarterly
         reporting  period  following the quarterly period in which the Borrower
         exceeds such minimum performance criteria.

 4.4     Payments. All principal, interest and fees due under the Documents will
         be paid to the Bank by the direct debit of  available  funds on deposit
         in the  Borrower's  account  with the  Bank.  The Bank  will  debit the
         account on the dates the  payments  become  due. If a due date does not
         fall on a day on which  the Bank is open for  substantially  all of its
         business (a "Banking Day"), the Bank will debit the account on the next
         Banking Day and interest  will  continue to accrue  during the extended
         period.  If there are insufficient  funds in the account on the day the
         Bank enters any debit  authorized by this Agreement,  the debit will be
         reversed and the payment will be due immediately  without  necessity of
         demand by direct remittance of immediately available funds.

 5.      SECURITY

         All amounts due under this  Agreement and the Documents will be secured
         as provided in Exhibit C. The  Borrower  also hereby  grants the Bank a
         security  interest  (independent of the Bank's right of set-off) in its
         deposit  accounts at the Bank and in any other debt  obligations of the
         Bank to the Borrower.

 6.      CONDITIONS PRECEDENT

         Prior to each request for an advance under this Agreement, the Borrower
         must  also  deliver  to the  Bank  any  additional  documents  that are
         described in Exhibit C as a condition precedent to any such advance.

 7.      REPRESENTATIONS AND WARRANTIES

         To induce the Bank to enter into this Agreement, the Borrower makes the
         representations and warranties contained in Exhibit D. Each request for
         an advance under this Agreement  constitutes a  reaffirmation  of these
         representations and warranties.

 8.      COVENANTS

         During the time period that credit is available  under this  Agreement,
         and  thereafter  until all amounts due under the  Documents are paid in
         full,  unless the Bank shall otherwise  agree in writing,  the Borrower
         agrees to:







         
 8.1     Financial Information

         Annual Reporting Information

(a)      Annual Financial  Statements,  CPA Management Letter and CPA Compliance
         Certificate.  Provide  the Bank on or before  July 31 of each  calendar
         year the Borrower's annual financial statements. The statements must be
         audited with an unqualified  opinion by a certified  public  accountant
         acceptable to the Bank. The Borrower shall also deliver to the Bank the
         letter to management  provided by its  accountants  with respect to the
         annual  financial  statements,  together with a compliance  certificate
         prepared  by  the  Borrower's  certified  public  accountants  in  form
         acceptable  to the Bank,  which  demonstrates  and  certifies  that the
         Borrower remains in compliance with the requirements of this Agreement.

(b)      Financial Projections.  Provide the Bank on or before July 31st of each
         year, the financial  projections for the succeeding  three fiscal years
         of the Borrower in form acceptable to the Bank.

(c)      High Performance Certification. Provide the Bank on or before July 31st
         of each year, a certification  from its Certified Public Accountants as
         to the Borrower's compliance with the performance criteria set forth in
         Section 4.3 of this Agreement, in form acceptable to the Bank.

         Monthly Reporting Information

(d)      Interim Financial  Statements.  Provide the Bank within 45 days of each
         month end, the Borrower's  interim  financial  statements  certified as
         correct and in form acceptable to the Bank.

(e)      Borrower Prepared Compliance Certificate. Provide the Bank concurrently
         with the interim  financial  statements  required  above,  a compliance
         certificate  in the form of  Exhibit  E,  signed by an  officer  of the
         Borrower,  which certifies that: 1) the statements have been accurately
         prepared in accordance with generally  accepted  accounting  principles
         applied  consistently with the Borrower's annual financial  statements;
         2) the Borrower  remains in compliance  with the covenants  required by
         this Agreement; and 3) if the Borrower is benefiting from a Section 4.3
         rate reduction,  a certification  stating that the Borrower  remains in
         compliance  with  the  performance  criteria  of  Section  4.3  of  the
         Agreement, and information in support of such certification.

(f)      Borrowing  Base  Certificate.  Provide  the Bank within 45 days of each
         month end, a Borrowing Base Certificate in form acceptable to the Bank.

(g)      Lawsuit  Status  Report.  Provide the Bank within 30 days of each month
         end,  a status  report  regarding  all  lawsuits  pending  against  the
         Borrower in form acceptable to the Bank.

(h)      Financial Performance Trending Report.  Provide the Bank within 30 days
         of  each  month  end,  graphs  showing  the  trends  of the  Borrower's
         financial performance and covenant compliance.

(i)      Analysis of  Significant  Financial  Items.  Provide the Bank within 30
         days of each month end, a detailed  internal  analysis  of  significant
         financial and operating  items  affecting the Borrower's  financial and
         operating performance.







(j)      Accounts  Receivable  Aging.  Provide  the Bank  within 45 days of each
         month end, an accounts receivable aging report certified as correct and
         in form acceptable to the Bank.

(k)      Accounts  Payable Aging.  Provide the Bank within 45 days of each month
         end, an accounts  payable aging report certified as correct and in form
         acceptable to the Bank.

         Other Reporting Information

(l)      SEC  Reporting.  Provide  the Bank  within 30 days of  filing  with the
         Securities  and  Exchange  Commission,  copies of its Form 10-K  Annual
         Report, Form 10-Q Quarterly Report and 8-K Current Report.

(m)      Notices.  Provide the Bank prompt written notice of: 1) any event which
         has or might  after the  passage of time or the  giving of  notice,  or
         both,  constitute  an event of default under the  Documents,  or 2) any
         event that would cause the representations and warranties  contained in
         this Agreement to be untrue.

(n)      Additional Information. Provide the Bank with such other information as
         it may reasonably request, and permit the Bank to visit and inspect its
         properties and examine its books and records.

 8.2     Financial Measures

(a)      Cash Flow  Coverage  Ratio.  Maintain at all times a ratio of after-tax
         profit plus depreciation and amortization to Current Maturities of Long
         Term Debt of at least 2.25 to 1.0.

         "Current  Maturities  of Long Term  Debt"  means  that  portion  of the
         Borrower's  long term debt and capital  leases payable within 12 months
         of the determination date.

(b)      Tangible Net Worth.  Maintain at all times a minimum Tangible Net Worth
         of at least $9,000,000.00, plus 50% of all positive monthly net income,
         beginning May 1, 1995.

         "Tangible Net Worth" means total assets less total liabilities and less
         the  following  types  of  assets:  (1)  leasehold  improvements;   (2)
         receivables   and  other   investments  in  or  amounts  due  from  any
         shareholder,  director,  officer,  employee  or other  person or entity
         related to or  affiliated  with the Borrower;  (3)  goodwill,  patents,
         copyrights,  mailing lists, trade names, trademarks,  servicing rights,
         organizational  and franchise costs, bond underwriting  costs and other
         like assets properly classified as intangible.

(c)      Total Liabilities to Tangible Net Worth Ratio.  Maintain at all times a
         ratio of total  liabilities  to Tangible Net Worth of less than 0.85 to
         1.0.

(d)      Current  Ratio.  Maintain  at all  times a ratio of  Current  Assets to
         Current Liabilities of at least 2.5 to 1.0.

         "Current  Assets" means current assets less receivables and investments
         in or  other  amounts  due  from any  shareholder,  director,  officer,
         employee  or any  person or entity  related to or  affiliated  with the
         Borrower.

         "Current  Liabilities"  means current  liabilities  less any portion of
         such current liabilities that constitute Subordinated Debt.

(e)      Interest Coverage Ratio.  Maintain at all times after November 1, 1995,
         a ratio of net  income  plus  income  taxes  plus  interest  expense to
         interest  expense of at least 2.0 to 1.0, as calculated on a rolling 12
         month  basis as of each month end and phased in by using the results of
         November, 1995 and of each succeeding month.

(f)      Debt Service  Coverage  Ratio.  Maintain at all times after November 1,
         1995, a ratio of Traditional Cash Flow plus interest expense to Current
         Maturities of Long Term Debt plus interest  expense of at least 1.75 to
         1.0,  calculated  on a rolling 12 month  basis as of each month end and
         phased in by using the results of November, 1995 and of each succeeding
         month.

         "Traditional  Cash Flow" means the aggregate  amount of the  following:
         (1) net income after taxes; (2) amortization  expense; (3) depreciation
         and  depletion  expense;  (4)  deferred  tax  expense  and (5)  similar
         non-cash  charges  against  income  which  the Bank  determines  in its
         discretion to be appropriate "add-backs".

 8.3     Other Covenants

(a)      Insurance. Cause its properties to be adequately insured by a reputable
         insurance  company  against  loss or  damage  and to carry  such  other
         insurance  (including  business  interruption,  flood, or environmental
         risk insurance) as is required of or usually carried by persons engaged
         in the same or similar  business.  Such insurance must, with respect to
         the  Bank's  collateral  security,  include  a  lender's  loss  payable
         endorsement  in favor of the Bank in form  acceptable to the Bank.  The
         Borrower shall additionally  maintain product liability insurance in an
         amount not less than $5,000,000.00.

(b)      Additional Borrowing.  Refrain from incurring any indebtedness except:

                    (i)  Trade  credit   incurred  in  the  ordinary  course  of
                    business.

                  (ii)  Purchase  money  indebtedness   (including   capitalized
                  leases) for the acquisition of fixed assets, provided that the
                  total  principal  amount  outstanding at any one time does not
                  exceed $500,000.00.

(c)      Other  Liens.  Refrain from  allowing any security  interest or lien on
         property it owns now or in the future, except:

                  (i)   Liens in favor of the Bank.

                  (ii) Liens for taxes not  delinquent  or which the Borrower is
                  contesting in good faith.

                  (iii) Liens which secure purchase money  indebtedness  allowed
                  under this Agreement.

(d)      Sale of Assets.  Refrain from selling or leasing during any fiscal year
         assets with a  cumulative  value in excess of  $500,000.00,  other than
         sales of inventory in the ordinary course of business.

(e)      Business  Acquisition.  Refrain from purchasing or otherwise  acquiring
         during any fiscal year, all or substantially  all, of the assets of any
         other person, firm, corporation or other entity with a cumulative value
         in excess of $500,000.00.

(f)      Change of Ownership.  Refrain from  permitting or suffering any change,
         direct or indirect in its capital ownership in excess of 15%.







(g)      Nature of  Business.  Refrain  from  engaging  in any line of  business
         materially different from that presently engaged in by the Borrower.

(h)      Guaranties.   Refrain  from  assuming,   guaranteeing,   endorsing,  or
         otherwise becoming contingently liable for any obligations of any other
         person,  except for those  guaranties  outstanding  as of the Effective
         Date and disclosed to the Bank in writing.

(i)      Deposit  Accounts.  Maintain its  principal  deposit  accounts with the
         Bank.

(j)      Maintenance of Properties.  Make all repairs,  renewals or replacements
         necessary to keep its plant,  properties  and equipment in good working
         condition.

(k)      Books and Records. Maintain adequate books and records and refrain from
         making any material  changes in its accounting  procedures  whether for
         tax purposes or otherwise.

(l)      Compliance  with Laws.  Comply in all material  respects  with all laws
         applicable to its business and the ownership of its property.

(m)      Preservation of Rights.  Maintain and preserve all rights,  privileges,
         charters and franchises it now has.

         These  covenants  were  negotiated  by the Bank and  Borrower  based on
         information  provided  to the  Bank  by the  Borrower.  A  breach  of a
         covenant  is an  indication  that  the  risk  of  the  transaction  has
         increased.  As  consideration  for any waiver or  modification of these
         covenants, the Bank may require:  additional collateral,  guaranties or
         other  credit  support;  higher fees or interest  rates;  and  possible
         modifications to the Documents and the monitoring of the Agreement. The
         waiver or  modification  of any covenant  that has been violated by the
         Borrower will be made in the sole discretion of the Bank. These options
         do not limit the Bank's right to exercise its rights under Section 9 of
         this Agreement.

 9.      EVENTS OF DEFAULT AND REMEDIES

 9.1     Default

         Upon  the  occurrence  of any one or more of the  following  events  of
         default,  or at any time  afterward  unless the default has been cured,
         the Bank may declare the Line to be  terminated  and in its  discretion
         accelerate and declare the unpaid  principal,  accrued interest and all
         other amounts  payable under the Revolving Note, the Term Note, and the
         Documents to be immediately due and payable:

(a)      Default by the  Borrower in the payment  when due of any  principal  or
         interest due under the Revolving Note and the Term Note and continuance
         for 10 days.

(b)      Default  by  the  Borrower  in the  observance  or  performance  of any
         covenant  or  agreement  contained  in the  Documents,  including  this
         Agreement, and continuance for more than 30 days.

(c)      Default  by  the  Borrower  in the  observance  or  performance  of any
         covenant  or  agreement  contained  in the  Documents,  or any of them,
         excluding this Agreement,  after giving effect to any applicable  grace
         period.

(d)      Default by the  Borrower  in any  agreement  with the Bank or any other
         lender that relates to  indebtedness  or contingent  liabilities  which
         would allow the maturity of such indebtedness to be accelerated.







(e)      Any  representation  or  warranty  made by the  Borrower to the Bank is
         untrue in any material respect.

(f)      Any litigation or governmental  proceeding against the Borrower seeking
         an amount in excess of  $500,000.00  either 1) results in an  uninsured
         final  judgment  equal  to or in  excess  of that  amount  against  the
         Borrower  or 2)  remains  unresolved  on the  270th day  following  its
         commencement,  unless as of the 270th day no judgment or award has been
         entered and the contingent  liability arising as a result is classified
         as "remote" by the Borrower's  counsel as defined in FASB 5 in a signed
         opinion addressed to the Bank.

(g)      A garnishment,  levy or writ of  attachment,  or any local,  state,  or
         federal  notice  of tax  lien or levy is  served  upon the Bank for the
         attachment  of property of the  Borrower  in the Bank's  possession  or
         indebtedness owed to the Borrower by the Bank.

(h)      Any  Guarantor  dissolves  or becomes  insolvent or is the subject of a
         voluntary or involuntary  petition  under the United States  Bankruptcy
         Code.

(i)      A material adverse change occurs in the Borrower's  financial condition
         or ability to repay its obligations to the Bank.

 9.2     Immediate Default

         If, with or without the  Borrower's  consent,  a custodian,  trustee or
         receiver is appointed  for any of the  Borrower's  properties,  or if a
         petition is filed by or against the  Borrower  under the United  States
         Bankruptcy  Code,  then the Line shall  immediately  terminate  and the
         unpaid principal,  accrued interest and all other amounts payable under
         the  Revolving  Note,  the Term Note,  and the  Documents  will  become
         immediately due and payable without notice or demand.

 10.     MISCELLANEOUS.

(a)      360 Day Year.  All interest and fees due under this  Agreement  will be
         calculated on the basis of actual days elapsed in a 360 day year.

(b)      GAAP.  Except as  otherwise  stated in this  Agreement,  all  financial
         information  provided to the Bank and all  calculations  for compliance
         with  financial   covenants  will  be  made  using  generally  accepted
         accounting principles consistently applied ("GAAP").

(c)      No  Waiver;  Cumulative  Remedies.  No  failure or delay by the Bank in
         exercising any rights under this Agreement  shall be deemed a waiver of
         those rights. The remedies provided for in the Agreement are cumulative
         and not exclusive of any remedies provided by law.

(d)      Amendments  or  Modifications.  Any amendment or  modification  of this
         Agreement  must be in writing and signed by the Bank and Borrower.  Any
         waiver of any provision in this Agreement must be in writing and signed
         by the Bank.

(e)      Binding  Effect:  Assignment.  This  Agreement  and the  Documents  are
         binding on the  successors  and assigns of the Borrower  and Bank.  The
         Borrower  may not  assign  its  rights  under  this  Agreement  and the
         Documents  without the Bank's prior written consent.  The Bank may sell
         participations  in or  assign  this  Agreement  and the  Documents  and
         exchange  financial  information  about  the  Borrower  with  actual or
         potential participants or assignees.

(f)      Minnesota Law. This Agreement and the Documents will be governed by the
         substantive laws of the State of Minnesota.







(g)      Severability  of  Provisions.  If any  part  of this  Agreement  or the
         Documents  are  unenforceable,  the  rest  of  this  Agreement  or  the
         Documents may still be enforced.

(h)      Integration.  This  Agreement  and the  Documents  contains  the entire
         understanding  between the parties and supersedes all prior  agreements
         between the Bank and the  Borrower  relating  to each  credit  facility
         subject to this Agreement, whether verbal or in writing.

Address for notices to Bank:                Address for notices to Borrower:


Norwest Bank Minnesota                      Aequitron Medical, Inc.
   National Association                     14800 28th Avenue North
55 East Fifth Street                        Plymouth, Minnesota 55447
St. Paul, Minnesota  55101
                                            Attention: William M. Milne
Attention: Thomas L. Falck                             Chief Financial Officer
           Vice President

Norwest Bank Minnesota                      Aequitron Medical, Inc.
   National Association

By:   /s/ Thomas L. Falck                   By:  /s/ William M. Milne
Its:    Vice President                      Its:   Chief Financial Officer







                                   EXHIBIT A
                           BORROWING BASE DEFINITION

Borrowing Base means the sum of 75% of Eligible Accounts  Receivable (as defined
below) plus 20% of Eligible  Inventory (as defined below),  plus 90% of Eligible
Investments  (as  defined  below) plus 50% of  Eligible  Crow River  Industries,
Incorporated Inventory (as defined below).

Eligible  Accounts  Receivable means all accounts  receivable except those which
are:

         1)  Greater Than 90 days past the invoice date.
         2) Due from an account  debtor,  10% or more of whose  accounts owed to
         the Borrower are more than 90 days past the invoice date.
         3)  Subject to offset or dispute.
         4)  Due from an account debtor who is subject to any bankruptcy 
         proceeding.
         5)  Owed by a shareholder, subsidiary, affiliate, officer or employee 
         of the Borrower.
         6)  Not subject to a perfected first lien security interest in favor of
         the Bank.
         7)  Due from an account debtor located outside the United States and 
         not supported by a standby letter of credit acceptable to the Bank.
         8)  Due from a unit of government, whether foreign or domestic.
         9)  Otherwise deemed ineligible by the Bank in its reasonable 
         discretion.

Eligible  Inventory means all medical  inventory of the Borrower,  including the
purchased  inventory of CNS,  Inc., at the lower of cost or market as determined
by generally accepted accounting principals, except inventory which is:

         1)  In transit; or located at any warehouse not approved by the Bank.
         2)  Covered by a warehouse receipt, bill of lading or other document of
         title.
         3)  On consignment to or from any other person or subject to any 
         bailment.
         4)  Damaged, obsolete or not salable in the Borrower's ordinary course 
         of business.
         5)  Subject to a perfected first lien security interest in favor of 
         any third party.
         6)  Supplies or parts inventory.
         7)  Work-in-process inventory.
         8)  In the process of being returned.
         9)  Custom or non-standard parts.
         10) Finished goods.
         11) Otherwise deemed ineligible by the Bank in its reasonable 
         discretion.

Eligible Crow River  Industries,  Incorporated  Inventory means all inventory of
Crow  River  Industries,  Incorporated,  at the  lower  of  cost  or  market  as
determined by generally accepted accounting  principals except inventory,  which
is:

         1)  In transit; or located at any warehouse not approved by the Bank.
         2)  Covered by a warehouse receipt, bill of lading or other document of
         title.
         3)  On consignment to or from any other person or subject to any 
         bailment.
         4)  Damaged, obsolete or not salable in the Borrower's ordinary course 
         of business.
         5)  Subject to a perfected first lien security interest in favor of 
         any third party.
         6)  Supplies or parts inventory.
         7)  Work-in-process inventory.
         8)  In the process of being returned.
         9)  Otherwise deemed ineligible by the Bank in its reasonable 
         discretion.

Eligible  Investments  means any security issued by the United States government
with an  initial  maturity  not in excess of one (1) year,  or any money  market
mutual fund rated A-1/P-1  provided that such  investment are subject to a first
lien security interest in favor of the Bank.

Actual  advance  rates are to be  determined  on a  reasonable  basis by Norwest
Collateral  Review  staff prior to initial  funding  following  its  pre-funding
collateral survey and from time to time afterward.






                                   EXHIBIT A

                            AEQUITRON MEDICAL, INC.
                           BORROWING BASE CERTIFICATE

TO:      Norwest Bank Minnesota, National Association
         55 East Fifth Street
         St. Paul, Minnesota  55101
         (the "Bank")

Aequitron   Medical,   Inc.  (the  "Borrower")   certifies  that  the  following
computation  of the Borrowing  Base was performed as of  ___________________  in
accordance  with the Borrowing  Base  definitions  set forth in Exhibit A to the
Credit Agreement between the Bank and the Borrower dated --------------.


                                                                             

Total Accounts Receivable                            $_________________

         Less:    1) Greater than 90 days in age     $__________________
                  2) Other ineligibles               $__________________
         Eligible Accounts Receivable                $__________________
         75% of Eligible Accounts Receivable                                    $_______________

Total Inventory                                      $__________________

         Less:  Ineligible Inventory                 $__________________
         Eligible Inventory                          $__________________
         20% of Eligible Inventory                                              $_______________

Total Crow River Industries,
         Incorporated Inventory                      $__________________
         Less:  Ineligible
         Crow River Inventory                        $__________________
         Eligible Inventory                          $__________________
         50% of Eligible Crow River Inventory                                   $________________

Eligible Investments                                 $__________________

         90% of Eligible Investments*                                           $________________

Total Borrowing Base                                                            $________________

         Line Outstandings                                                      $________________
         Term Outstandings                                                      $________________
         Line Outstandings                                                      $________________

Excess (Deficit)                                                                $________________


Aequitron Medical, Inc.

By:   _____________________________

Its:  _____________________________

*  NOTE:  Additional documentation required to support reliance on Eligible 
Investments.  See Exhibit "C" of the Agreement.







                                   EXHIBIT B
                            AEQUITRON MEDICAL, INC.
             TO BE SENT VIA FAX (612) 291-2141 BY 11:00 A.M. DAILY
                         REQUEST FOR ADVANCE OR PAYDOWN
                               OF REVOLVING LINE

To:      Norwest Bank Minnesota,             From:   Aequitron Medical, Inc.
           National Association                      14800 - 28th Avenue North
         55 East Fifth Street                        Plymouth, Minnesota 55447
         St. Paul, Minnesota 55101                   (the "Borrower")
         (the "Bank")

         Pursuant  to the  terms of the  conditional  revolving  line of  credit
documented  under the existing credit agreement (the  "Agreement")  entered into
between the Bank and the Borrower, the Borrower requests as follows:

___ REQUEST FOR LINE ADVANCE. The Borrower requests that the Bank advance to the
Borrower on  ________________,  199__ , by direct  deposit  into demand  deposit
account #_________, funds in the amount of U.S.$ ____________ .

The advance  should bear interest as follows:  ___ Base Rate,  floating;  or ___
Fixed Rate Cost of Funds plus ________%, maturing _______________ .

In making this request, the Borrower hereby certifies as follows:

         1. This request is not in excess of the Borrowing Base reflected in the
Borrower's last Borrowing Base Certificate dated ______________

         2. As of this date,  the Borrower's  availability  under the Line is as
follows:

                  Borrowing Base                         $ ____________________
                  Term Loan Balance                      ($____________________)
                  Revolving Line Balance                 ($____________________)
                  Current Borrowing Base Availability    $_____________________

___ REQUEST FOR PAYDOWN OF LINE.  The Borrower  requests that the Bank debit the
Borrowers demand deposit account #_______________, on ___________________ in the
amount of U.S.$  ________________________  and apply the proceeds to the payment
of the  outstanding  balance of the Revolving Note that evidences its borrowings
under the Line.

I personally  certify that I am  authorized  to sign on behalf of the  Borrower,
that I have read and am  familiar  with the terms of the  Agreement  and have no
knowledge of an existing event of default or event which after the lapse of time
or the  delivery  of  notice  would  constitute  an event of  default  under the
Agreement.  If this  request  includes  reliance  on Eligible  Investments,  the
required documentation for the specific investments is attached.

AEQUITRON MEDICAL, INC.

By:_______________________________

Its:_______________________________








                                   EXHIBIT C

            CONDITIONS PRECEDENT TO INITIAL ADVANCE OR DISBURSEMENT

The Replacement Note and the Term Note

Security Documents

Security  Agreement.  A Security  Agreement signed by the Borrower  granting the
Bank a first lien  security  interest  in the  Borrower's  accounts,  inventory,
equipment  and general  intangibles.  The Borrower  will also execute  financing
statements sufficient to perfect the security interest granted to the Bank.

Collateral  Pledge  Agreement.  A  Collateral  Pledge  Agreement  signed  by the
Borrower  and  pledging  to the  Bank a  first  lien  security  interest  in the
securities  described in it. The Borrower will also execute any other  documents
required by the Bank to perfect the pledge.

Guaranty by Corporation.  The unlimited,  unconditional  Guaranty by Corporation
(the  "Guaranty")  of Crow River  Industries,  Incorporated  (the  "Guarantor"),
together with a Certificate of Authority for Guaranty by Corporation.

Authorization

Corporate  Certificate of Authority.  A certificate of the Borrower's  corporate
secretary as to the  incumbency  and  signatures of the officers of the Borrower
signing the Documents and  containing a copy of  resolutions  of the  Borrower's
board of directors  authorizing  execution of the Documents and  performance  in
accordance with the terms of the Agreement.

Organization

Articles of  Incorporation  And By - Laws.  A certified  copy of the  Borrower's
Articles of Incorporation and By-Laws and any amendments, if applicable.

Certificate  of Good  Standing.  A copy of the  Borrower's  Certificate  of Good
Standing,  certified  within  30 days  of the  Effective  Date by the  Minnesota
Secretary of State.

Other

Arbitration  Agreement.  The Bank's standard form of arbitration  agreement (the
"Arbitration Agreement") signed by the Bank and Borrower,  subjecting to binding
arbitration  potential  controversies  between the Bank and Borrower relating to
the  Documents and the  Agreement,  as more fully  described in the  Arbitration
Agreement.

Legal Opinion.  A signed  opinion of counsel for the Borrower,  addressed to the
Bank, and in form and substance  satisfactory to the Bank, opining that: (1) the
Borrower is duly  organized and in good  standing in its state of  organization;
(2) the  Borrower is  qualified  in each state in which it does  business and is
legally required to be qualified;  (3) the Borrower has the power to execute and
deliver the  Documents  and to borrow money and perform in  accordance  with the
terms of the Documents;  (4) all corporate  action and consent  necessary to the
validity of the Documents has been  obtained;  (5) the Documents  have been duly
signed and are the valid and binding  obligation of the Borrower and enforceable
in accordance with their terms; and (6) to the best of counsel's knowledge,  the
Documents and the transactions  contemplated thereunder do not conflict with any
provision  of the  articles  of  incorporation  or  by-laws of  Borrower  or any
agreement binding upon the Borrower or its properties.

Pre-Funding  Collateral Survey. A collateral survey conducted by the Bank or its
agents






substantiating  the  Borrower's  inventory  and  the  inventory  of  Crow  River
Industries,  Incorporated  and  confirming or adjusting the Bank's  advance rate
with respect to such collateral.

CONDITIONS PRECEDENT TO ALL ADVANCES

Request for Advance.  Concurrent with each request for an advance under the Line
or a  disbursement  under the Term Loan, the Borrower will deliver a Request for
Advance certificate to the Bank in the form set froth at Exhibit B.

CONDITIONS PRECEDENT TO ADVANCES SECURED BY INVESTMENT SECURITIES

Notice of Pledge.  Concurrent with each request for an advance under the Line or
a disbursement  under the Term Loan that will be supported in part by investment
securities  permitted  under  the  Borrowing  Base  definition  set forth in the
Agreement,  the  Borrower  will  deliver  to the Bank a Notice  of  Pledge  form
identifying  those  investment  securities to be included in the Borrowing Base,
together with such other  documents as the Bank may deem necessary to secure the
pledge.








                                   EXHIBIT D

                         REPRESENTATIONS AND WARRANTIES


Organizational  Status.  The Borrower is a  corporation  duly formed and in good
standing under the laws of the State of Minnesota.

Authorization.  This Agreement,  and the execution and delivery of the Documents
required  hereunder,  is  within  the  Borrower's  powers,  and  has  been  duly
authorized,  and does not conflict with any of its organizational  papers or any
other agreement by which the Borrower is bound.

Financial  Reports.  The Borrower has provided the Bank with its annual  audited
financial  statement  dated April 30, 1994 and its unaudited  interim  financial
statement  dated  April 30 1995,  and  these  statements  fairly  represent  the
financial  condition  of the  Borrower  as of their  respective  dates  and were
prepared in accordance with GAAP.

Litigation.  There  is no  litigation  or  governmental  proceeding  pending  or
threatened  against the Borrower  which could have a material  adverse effect on
the Borrower's financial condition or business.

Taxes.   The Borrower has paid when due all federal, state and local taxes.

No  Default.  There is no event  which is,  or with  notice or the lapse of time
would be, an event of default under this Agreement.

ERISA. The Borrower is in compliance in all material respects with ERISA and has
received no notice to the contrary from the PBGC or other governmental area.

Environmental  Matters.  To the  best  of  the  Borrower's  knowledge  following
diligent inquiry: 1) the Borrower is in compliance in all material respects with
all applicable  environmental,  health, and safety statutes and regulations,  2)
the  Borrower  is not the  subject of any  "Superfund"  evaluations,  and 3) the
Borrower has not  incurred,  directly or  indirectly,  any  material  contingent
liability  in  connection  with the release of any toxic or  hazardous  waste or
substance into the environment.