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                                                                    OMB APPROVAL
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                                                    OMB Number 3235-0145
                                                    Expire August 31, 1999
                                                    Estimated average burden
                                                    hours per response.....14.90
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 8 )*


                           Merit Medical Systems, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                           Common Stock, No Par Value
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   589889-10-4
                                   -----------
                                 (CUSIP Number)

                                December 31, 1998
              ------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

        [ ]        Rule 13d-1(b)
        [ ]        Rule 13d-1(c)
        [x]        Rule 13d-1(d)

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



Potential persons who are to respond to the collection of information  contained
in this form are not  required to respond  unless the form  displays a currently
valid OMB control number.

                               Page 1 of 5 Pages

SEC 1745 (2-95)

CUSIP No. 589889-10-4 ----------- - -------------------------------------------------------------------------------- 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Fred P. Lampropoulos ----------------------------------------------------------------------- - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) ---- (b) ---- - -------------------------------------------------------------------------------- 3. SEC Use Only ---------------------------------------------------------- - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization United States ---------------------------- - -------------------------------------------------------------------------------- Number of 5. Sole Voting Power 699,593 Shares Bene- -------------------------- ficially Owned by Each 6. Shared Voting Power None Reporting ------------------------- Person With: 7. Sole Dispositive Power 699,593 --------------------- 8. Shared Dispositive Power None -------------------- - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 699,593 ----------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] 11. Percent of Class Represented by Amount in Row (9) 9.2 % --------------------- 12. Type of Reporting Person (See Instructions) IN ---------------------------- Page 2 of 5 Pages SEC 1745 (2-95)

CUSIP No. 589889-10-4 Item 1. (a) Name of Issuer: Merit Medical Systems, Inc. (the "Company") (b) Address of Issuer's Principal Executive Offices: 1600 West Merit Parkway, South Jordan, Utah 84095 Item 2. (a) Name of Person Filing: Fred P. Lampropoulos (the "Reporting Person") (b) Address of Principal Business Office, if none, Residence: 1600 West Merit Parkway, South Jordan, Utah 84095 (c) Citizenship: United States (d) Title of Class of Securities: Common Stock, No Par Value (the "Common Stock") (e) CUSIP Number: 589889-10-4 Item 3. This statement is not filed pursuant to Sections 240.13d-1(b) or 240.13d-2(b) or (c). Item 4. Ownership (a) Amount Beneficially Owned: As of December 31, 1998, the Reporting Person was the beneficial owner of 699,593 shares of the Common Stock, which included 12,309 shares owned by the Reporting Person pursuant to the Issuer's 401(k) Plan, based upon the most recent plan statement timely distributed, and 171,500 shares that the Reporting Person had the right to acquire pursuant to currently exercisable options. (b) Percent of Class: 9.2% (c) Number of shares as to which the Reporting Person has: (i) sole power to vote or to direct the vote: 699,593 (ii) shared power to vote or to direct the vote: None (iii) sole power to dispose or to direct the disposition of: 699,593 (iv) shared power to dispose or to direct the disposition of: None Item 5. Ownership of Five Percent or Less of a Class This statement is not being filed to report the fact that as of the date hereof the Reporting Person has ceased to be the beneficial owner of more than five percent of the class of securities. Item 6. Ownership of More than Five Percent on Behalf of Another Person Not applicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company Not applicable. Page 3 of 5 Pages SEC 1745 (2-95)

Item 8. Identification and Classification of Members of the Group Not applicable. Item 9. Notice of Dissolution of Group Not applicable. Item 10. Certification Not applicable. Page 4 of 5 Pages SEC 1745 (2-95)

SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. February 11, 1999 ------------------------- Date /s/ FRED P. LAMPROPOULOS ------------------------- Signature Fred P. Lampropoulos ------------------------- Name/Title Page 5 of 5 Pages SEC 1745 (2-95)