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              FIRST AMENDMENT TO NON-QUALIFIED STOCK OPTION AGREEMENT
                                     (CURRENT)


     This First Amendment to the Oxboro Medical International, Inc. 
Non-Qualified Stock Option Agreement dated October 1, 1997 (Current Option"), 
is made and entered into effective as of the 1st day of September, 1998 
between Oxboro, Medical International, Inc., a Minnesota corporation (the 
"Company") and Larry A. Rasmusson ("Rasmusson").

                                       RECITALS

     WHEREAS, the Company granted a Stock Option to Rasmusson effective 
October 1, 1997 to purchase One Hundred Thousand (100,000) Shares of Common 
Stock ("Stock") of the Company at a price of $1.00 per share;

     WHEREAS, on January 14, 1998 the Company and Rasmusson entered into a 
Stock Option Exercise and Loan Agreement to effect an exercise of the Option 
and an additional option for an additional One Hundred Thousand (100,000) 
Shares of Common Stock of the Company and an acquisition of Shares in 
consideration of a Secured Promissory Note in the amount of Two Hundred 
Thousand Dollars ($200,000), which Shares were pledged to the Company as 
security for the Note under an Instruments Security Agreement dated January 
15, 1998;

     WHEREAS, the Company and Rasmusson desire to effect a rescission to said 
Stock Option Exercise and Loan Agreement, secured Promissory Note and 
Instruments Security Agreement;

     WHEREAS, the Company and Rasmusson desire to reinstate and amend the 
terms of the Non-Qualified Stock Option Agreement as set forth below.

                                 TERMS AND CONDITIONS

     NOW, THEREFORE, in consideration of the mutual promises hereinafter 
contained, the parties hereto agree as follows:

     1.   RESCISSION OF THE STOCK OPTION EXERCISE AND LOAN AGREEMENT, SECURED
          PROMISSORY NOTE AND INSTRUMENTS SECURITY AGREEMENT.  The Company and
          Rasmusson hereby rescind in their entirety the Stock Option Exercise
          and Loan Agreement, Secured Promissory Note and Instruments Security
          Agreement between the Company and Rasmusson for the purchase of said
          Two Hundred Thousand (200,000) Shares of Stock, all dated January 15,
          1998.  The One Hundred Thousand (100,000) shares of the Company's
          Common Stock issued to Rasmusson under the above-referenced Current
          Option and  pursuant to the Certificate of Common Stock of Oxboro
          Medical International, Inc. No. __ shall be and hereby is returned to
          the Company duly endorsed by Rasmusson or pursuant to an Assignment
          Separate from Certificate.  Both the Company and Rasmusson are hereby
          relieved from any and all obligation, duties and 

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          responsibilities under said Stock Option Exercise and Loan 
          Agreement, Secured Promissory Note and Instruments Security 
          Agreement.
     
     2.   TERM OF OPTION.  This Option must be exercised, if at all, and to 
          the extent exercised, on or before March 31, 1999.

     3.   EXERCISE OF OPTION.  This Option may be exercised either by payment 
          in full in cash, by certified or cashier's check or, by the 
          transfer to the Company of shares of Stock already owned by 
          Rasmusson and having a fair market value, as of the date of the 
          exercise of the this Option, which is not less than the purchase 
          price of the Stock being acquired pursuant to the Option provided 
          that such shares of Stock were acquired and full consideration paid 
          therefore at least six (6) months prior to such delivery or by 
          execution of an interest-free Promissory Note by Rasmusson in the 
          amount of One Hundred Thousand Dollars ($100,000) which Note shall 
          be payable in full on or before September 1, 2000.  If the Option 
          is exercised by the execution of a Promissory Note, in the form 
          attached hereto as Exhibit 1, then the Note shall be secured by any 
          and all payments due to Rasmusson by the Company.  If the Note is 
          not paid in full on or before September 1, 2000, then the Company 
          may apply any and all amounts due and owing to Rasmusson at such 
          time to payment of the Note.  Further, the shares shall be held as 
          additional collateral for payment of the Note; however, Rasmusson 
          may vote the shares while such shares are being held as collateral 
          by the Company.  Such shares shall be held as collateral pursuant 
          to an Instruments Security Agreement in the form attached hereto as 
          Exhibit 2.

     All other terms and conditions of the Option remain unchanged and are in
full force and effect.

                                       OXBORO MEDICAL INTERNATIONAL, INC.
                              
                                       By:  /s/ Robert S. Garin
                                           ----------------------------------
                                          Its:  Chairman of the Board
                                               ------------------------------
     
     
     
                                       RASMUSSON
     
     
                                        /s/ Larry A. Rasmusson
                                       ---------------------------------------
                                       Larry A. Rasmusson
     

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