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                                            November 11, 2003
- ----------------------------------------
Arch B. Gilbert
President, Chief Executive Officer
and Chief Financial Officer