Patent ID: 9314551
Filing Date: 2016-04-19
CPC Classification: A61L,A61P

Claim Text:
1. A stent, comprising: a biodegradable metal stent body comprising Mg, Fe, or an alloy thereof; a copolymer coating disposed directly on the biodegradable metal stent body, the copolymer coating comprising elastic segments and rigid segments, the elastic segments being formed of a trimethyl carbonate polymer or copolymer that degrades by bulk hydrolysis, the rigid segments comprising a lactide, glycolide, ε-caprolactone polymer or copolymer that degrades by enzymatic surface erosion, the copolymer coating being cross-linked, the copolymer coating having an elastic modulus of 10 MPa or less and exhibiting degradation by surface erosion over a period of 20 days or more; and one or more inorganic materials mixed into the copolymer coating; wherein the copolymer coating is functionalized with maleic anhydride.