Patent ID: 8652501

Claim:
An implantable device comprising a coating, the coating comprising: a reservoir region comprising a polymer and a drug blended with or dispersed in the polymer; and a primer region free from any drugs located between the reservoir region and the surface of the implantable device, the primer region comprising a material having a high content of hydrogen bonding groups, the material having the high content of hydrogen bonding groups being selected from the group consisting of epoxy polymers cured by polyols and Lewis acid catalysts, epoxy phenolics, epoxy-polysulfides, ethylene vinyl acetate, melamine formaldehydes, polyvinylalcohol-co-vinyl acetate polymers, resorcinol-formaldehydes, urea-formaldehydes, polyvinylbutyral, polyvinylacetate, alkyd polyester resins, acrylic acid modified ethylene vinyl acetate polymers, methacrylic acid modified ethylene vinyl acetate polymers, acrylic acid modified ethylene acrylate polymers, methacrylic acid modified ethylene acrylate polymers, anhydride modified ethylene acrylate copolymers, anhydride modified ethylene vinyl acetate polymers, and combinations thereof.