Patent ID: 9078957
Filing Date: 2015-07-14
Classification: A61L

Abstract:
1. A method of decreasing a surface reactivity of a polymeric stent, said method comprising: fabricating a biodegradable polymeric stent using polylactic acid (PLA), the stent having a surface; preparing a bath comprising PLA-polyethylene glycol (PEG) diblock copolymers dissolved in acetone, the concentration of the PLA-PEG diblock copolymers dissolved in the acetone being 5% weight/volume; and immersing at least part of the biodegradable polymeric stent into a said bath for a period of time; wherein the sharp surfaces and/or irregularities on the surface of the biodegradable polymeric stent are reduced or eliminated and thereby decrease the surface reactivity of the polymeric stent.