    <SEC-DOCUMENT>0000856982-17-000045-index.html : 20171215
    <SEC-HEADER>0000856982-17-000045.hdr.sgml : 20171215
    <ACCEPTANCE-DATETIME>20171215171429
    ACCESSION NUMBER:		0000856982-17-000045
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		5
    CONFORMED PERIOD OF REPORT:	20171215
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
    ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20171215
    DATE AS OF CHANGE:		20171215

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MERIT MEDICAL SYSTEMS INC
    		CENTRAL INDEX KEY:			0000856982
    		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
    		IRS NUMBER:				870447695
    		STATE OF INCORPORATION:			UT
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-18592
    		FILM NUMBER:		171259765

    	BUSINESS ADDRESS:
    		STREET 1:		1600 WEST MERIT PARK WAY
    		CITY:			SOUTH JORDAN
    		STATE:			UT
    		ZIP:			84095
    		BUSINESS PHONE:		8012531600

    	MAIL ADDRESS:
    		STREET 1:		1600 WEST MERIT PARKWAY
    		CITY:			SOUTH JORDAN
    		STATE:			UT
    		ZIP:			84095
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>a12152017-8k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a12152017-8k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>2
    <FILENAME>thirdamendmentcredit101.htm
    <DESCRIPTION>EXHIBIT 10.1
    <TEXT>
    Document 2 - file: thirdamendmentcredit101.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.2
    <SEQUENCE>3
    <FILENAME>amendmentfredplampropoulos.htm
    <DESCRIPTION>EXHIBIT 10.2
    <TEXT>
    Document 3 - file: amendmentfredplampropoulos.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.3
    <SEQUENCE>4
    <FILENAME>amendmentform103.htm
    <DESCRIPTION>EXHIBIT 10.3
    <TEXT>
    Document 4 - file: amendmentform103.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>a2015mmsilogoaa27.jpg
    <TEXT>
    Document 5 - file: a2015mmsilogoaa27.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>