Patent ID: 8685433

Claim:
A bioabsorbable coating on an implantable medical device, comprising a primer layer comprising a bioabsorbable polymer having a first molecular weight and a second layer comprising a bioabsorbable polymer of a second molecular weight and a drug, or a second layer comprising a bioabsorbable polymer of a second molecular weight that does not comprise a drug and is formed on top of a layer of drug on top of the primer layer, wherein the first molecular weight is higher than the second molecular weight, wherein either the primer layer or the second layer further comprises: a plasticizer selected from the group consisting of ethyl lactate, DMSO, NMP, and benzyl benzoate, or a hygroscopic additive selected from the group consisting of a low molecular weight PVP and a low molecular weight PEG, or micronized NaO 2 or KO 2 , or stannous octoate, and wherein the coating is completely or substantially completely absorbed upon implantation in a human body within a period from about 3 months to about 6 months.