EXHIBIT 32.2


CERTIFICATE OF THE PRINCIPAL FINANCIAL OFFICER
OF DIOMED HOLDINGS, INC. (REGISTRANT)
PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, David B. Swank, Chief Financial Officer of the Registrant, certify to the
best of my knowledge and belief pursuant to Section 906 of Sarbanes-Oxley Act of
2002 (18 U.S.C. Section 1350) that:

(1) The Quarterly Report on Form 10-QSB for the period ended September 30, 2004,
which this statement accompanies, 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 Quarterly Report on Form 10-QSB fairly
presents, in all material respects, the financial condition and result of
operations of the Registrant.


The foregoing certification is being furnished solely pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, chapter
63 title 18, United States Code) and is not being filed as part of the Form
10-QSB or as a separate disclosure document.


Date:  November 5,  2004                           /s/ DAVID B. SWANK
                                                  --------------------------
                                                  David B. Swank
                                                  Chief Financial Officer
                                                  (Principal Financial Officer)