Exhibit 31

CERTIFICATION
Pursuant to Exchange Rule 13a-14(a),
As adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Arch B. Gilbert, certify that:

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

	2.		Based on my knowledge, this annual 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 with respect to the period covered by the annual report;

	3.		Based on my knowledge, the financial statements and other financial information included in this annual 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 annual report;

	4.		I am responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

	a.		designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, 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 annual report is being prepared;

	b.		Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for the external purposes in accordance with generally accepted accounting principles;

	c.		evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the period covered by this report based on such evaluation; and

	d.		disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting;

I have disclosed, based on my most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the Audit Committee of the Company’s Board of Directors (or persons performing the equivalent function):

all deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

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


/s/ Arch B. Gilbert		January 13, 2005

Arch B. Gilbert President, Chief Executive Officer and Chief Financial Officer

INTERWEST MEDICAL CORP 10-K/A