EXHIBIT 32.1

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Bioject Medical Technologies Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2005 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, James C. O’Shea, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge,:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

/s/ James C. O’Shea

James C. O’Shea

Chief Executive Officer

Bioject Medical Technologies Inc.

August 11, 2005

This certification is made solely for the purpose of 18 U.S.C. Section 1350, and not for any other purpose.  A signed original of this written statement required by Section 906 has been provided to Bioject Medical Technologies Inc. and will be retained by Bioject Medical Technologies Inc. and furnished to the Securities and Exchange Commission or its staff upon request.