Patent ID: 9649208
Date: 2017-05-16
CPC Classifications: A61F,A61L

Claim:
1. A method of forming a stent comprising the steps of: shaping a composite wire into a stent pattern, wherein the composite wire comprises an outer member, an intermediate member, and a radiopaque core member, wherein the intermediate member is disposed between the outer member and the core member; processing the composite wire such that the core member is removed from portions of the composite wire without adversely affecting the outer member; processing the composite wire such that the intermediate member is substantially removed from the composite wire thereby leaving the outer member and lumens defined by an outer member inner surface in portions where the radiopaque core member is removed, and the outer member, radiopaque core member, and annular lumens defined between a radiopaque core member outer surface and the outer member inner surface in areas where the radiopaque core member is not removed; filling at least a portion of the lumens and the annular lumens with a biologically or pharmacologically active substance; and providing openings through the outer member.