Patent ID: 9446172
Filing Date: 2016-09-20
CPC Classification: A61F,A61K,A61L

Claim Text:
1. A bioabsorbable stent comprising: a poly(L-lactide) (PLLA) scaffolding composed of a plurality of struts having a thickness between 100 and 200 microns; and a first coating layer disposed over the PLLA scaffolding and a second coating layer disposed over the first coating layer, wherein each coating layer has a thickness less than 2 microns, wherein each coating layer comprises a surface eroding polymer, wherein the polymer is selected from the group consisting of hydrophobic aliphatic polyanhydrides, hydrophobic aromatic polyanhydrides, polyester amides, poly(ortho esters), and polyketals, and wherein immobilized antithrombotic agent is at an outer surface of each coating layer, wherein the immobilized antithrombotic agent is heparin.