Patent ID: 7771740

Claim:
A medical device comprising: (a) a release region and (b) a therapeutic agent disposed within or beneath said release region, said release region comprising a copolymer that comprises (i) a low T g block displaying a glass transition temperature (T g ) that is below 25° C., said low T g block selected from a polyacrylate block, a polymethacrylate block, a polyester block, a polyalkene block, a poly(halogenated alkene) block, and a poly(siloxane) block; and (ii) a plurality of graft copolymer endblocks, said graft copolymer endblocks comprising (a) a polymethylmethacrylate main chain and (b) a plurality of side chains selected from polyethylene oxide, polyvinylpyrrolidone, polymethylmethacrylate, and polystyrene.