A device master record is a collection of every document needed to manufacture, package, and possibly service a medical device. Dmr is maintained on the company computer network in a microsoft word table, excel or equivalent format. Going by the fda’s definition a dmr is: Okay, here is a generic example of a dmr template for a medical device. A lot of the documents are not in the device master record, but are referenced in the dmr as to where the document is located (document control office, engineering library,.