Patent ID: 6673385
Filing Date: 2004-01-06
Classification: A61L,C08F,C08K,C09D

Abstract:
A method of forming a polymeric coating for a stent, comprising:(a) applying a mixture of a monomer or a combination of monomers and an initiator of polymerization to the stent; and (b) initiating polymerization of the monomer or combination of monomers by subjecting the stent to thermal treatment or by exposing the stent to UV radiation, to form a polymeric coating for the stent, wherein: (i) the polymer forming the coating is selected from a group consisting of poly(glycol methacrylate), poly(methyl methacrylate), poly(ethyl methacrylate), poly(butyl methacrylate), poly(sulfanato ethyl methacrylate), poly(ethylene-co-vinyl acetate), poly(ethyl acrylate), poly(urethane-acrylate), poly(acrylamide-co-ethyl methacrylate), poly(divinyl benzene), poly(triethylene glycol-co-divinyl ether), poly(tri-methylol propane triacrylate), poly(pentaerythritol tetraacrylate), poly(Bisphenol A ethoxylate diacrylate), poly(allyl ether), poly(diallyl maleate), poly(vinylidene fluoride), poly(triallyl isocyanurate), and blends thereof, and (ii) the initiator is selected from a group consisting of benzophenone, 2,2-dimethoxy-2-phenylacetophenone, 1-hydroxycyclohexyl phenyl ketone, benzoin ethyl ether, phenyl azide, 2,2â€²-azobisisobutyronitrile, potassium persulfate, ammonium persulfate, and a blend of ammonium persulfate with sodium bisulfite.