Patent ID: 7491234
Filing Date: 2009-02-17
Classification: A61F,A61L

Abstract:
1. A medical device, at least a portion of which is insertable or implantable into the body of a patient, said medical device comprising: a therapeutic agent containing layer comprising a high-molecular-weight therapeutic agent; and a polymeric covering layer disposed over said therapeutic agent containing layer, said polymeric covering layer comprising one or more polymers selected from (a) a block copolymer comprising at least two polymeric blocks A and B, wherein A is a polyolefin block and wherein B is a vinyl aromatic block, (b) a polymer or copolymer of lactic acid, (c) a polymer or copolymer of glycolic acid, and (d) a tyrosine-based polymer or copolymer, said polymeric covering layer having regions of a leachable material dispersed within the polymeric covering layer.