EXHIBIT 31
                                  CERTIFICATION
                      Pursuant to 18 U.S.C. Section 1350,
      as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002


I, Arch B. Gilbert, certify that:

     1.  I have reviewed this quarterly report on Form 10-Q of InterWest Medical
         Corporation;

     2.  Based on my knowledge, this quarterly report does not contain any
         untrue statement of a material fact or omit to state a material fact
         necessary to make the statements made, in light of the circumstances
         under which such statements were made, not misleading;

     3.  Based on my knowledge, the financial statements, and other financial
         information included in this quarterly report, fairly present in all
         material respects the financial condition, results of operations and
         cash flows of the registrant as of, and for, the periods presented in
         this quarterly report;

     4.  I am responsible for establishing and maintaining disclosure controls
         and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for
         the registrant and have:

         a.  designed such disclosure controls and procedures to ensure that
             material information relating to the registrant, including its
             consolidated subsidiaries, is made known to me by others within
             those entities, particularly during the period in which this
             quarterly report is being prepared;

         b.  evaluated the effectiveness of the registrant's disclosure controls
             and procedures as of a date within 90 days prior to the filing date
             of this quarterly report (the "Evaluation Date"); and

         c.  presented in this quarterly report our conclusions about the
             effectiveness of the disclosure controls and procedures based on my
             evaluation as of the Evaluation Date.

     5.  I have disclosed, based on my most recent evaluation, to the
         registrant's auditors and the Audit Committee of the Company's Board of
         Directors:

         a.  all significant deficiencies in the design or operation of internal
             controls which could adversely affect the registrant's ability to
             record, process, summarize and report financial data and have
             identified for the registrant's auditors any material weaknesses in
             internal controls; and

         b.  any fraud, whether or not material, that involves management or
             other employees who have a significant role in the registrant's
             internal controls; and

I have indicated in this quarterly report whether or not there were significant
changes in internal controls or in other factors that could significantly affect
internal controls subsequent to the date of my most recent evaluation, including
any corrective actions with regard to significant deficiencies and material
weaknesses.

/s/ ARCH B. GILBERT                                               August 1, 2003
- -------------------------------------------------
Arch B. Gilbert
President, Chief Executive Officer
and Chief Financial Officer