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US 6,149,678 AGranted
Polyurethane and polyurea biomaterials for use in medical devices
AssigneeMedtronic, Inc.
InventorsEdward DiDomenico, David L. Miller, Michael Eric Benz
Life of this patent
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Abstract
A medical device comprising a biomaterial formed from a polymer comprising urethane groups, urea groups, or combinations thereof, and sacrificial moieties that preferentially oxidize relative to other moieties in the polymer.
Claims5
A method of making a medical device comprising a biomaterial, the method comprising the steps of:
- (a) combining at least one isocyanate-containing compound with at least one diol- or diamine-containing compound to form the biomaterial, the biomaterial comprising urethane groups, urea groups, or combinations thereof, and sacrificial moieties that preferentially oxidize relative to all other moieties in the polymer;
- and
- (b) forming a medical device with the biomaterial.
Dependencies are inferred from the claim text.