ANTI-MIGRATION MICROPATTERNED STENT COATING

摘要

An endoprosthesis has an expanded state and an unexpanded state, the endoprosthesis includes a stent, wherein the stent has a first end, a second end, an inner surface defining a lumen, an outer surface, and a thickness defined between the inner surface and the outer surface; and a stent end covering disposed at one of the first and second ends, the stent end covering including a polymeric coating that includes a base and a plurality of protrusions, the base including a first major surface facing the outer surface of the stent, the base further including a second major surface from which each of the plurality of protrusions extends outwardly, the first major surface opposing the second major surface, wherein the protrusions are arranged in a micropattern. Methods of making and using an endoprosthesis are provided.

主权项

1. An endoprosthesis having an expanded state and an unexpanded state, the endoprosthesis comprising:
a stent having an inner surface and an outer surface; and a stent covering disposed on at least a portion of the outer surface of the stent, the stent covering including a polymeric coating having a base and a plurality of protrusions extending outwardly from the base, wherein the protrusions are arranged in a micropattern, wherein the protrusions are configured to expand from a first profile to a second profile.