Exhibit 99.1   Certification of Chief Executive Officer

                            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  Annual  Report of Merit  Medical  Systems,  Inc.  (the
"Company")  on Form 10-K for the fiscal  year ended  December  31, 2002 as filed
with the Securities and Exchange  Commission on the date hereof (the  "Report"),
I, Fred P.  Lampropoulos,  Chief  Executive  Officer  of the  Company,  certify,
pursuant  to 18  U.S.C.  ss.  1350,  as  adopted  pursuant  to  ss.  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 results of operations of the Company.


/s/ Fred. P. Lampropoulos
- -------------------------
    Fred. P. Lampropoulos
    Chief Executive Officer

March 28, 2003

                                        A signed original of this written
                                        statement required by Section 906
                                        of the Sarbanes-Oxley Act of 2002
                                        has been  provided to the Company
                                        and  will  be   retained  by  the
                                        Company  and   furnished  to  the
                                        Securities and Exchange Commission
                                        or  its  staff  upon request.