Durable implant

摘要

An implant for use inside a human body including a biocompatible self-supporting base material, such as silicone, having surfaces exposed to aggressive body cells, when the implant is implanted in the human body. A cell barrier coating, such as Parylene® or a biocompatible metal, is coated on the surfaces of the base material to prevent body cells from breaking down the base material.

主权项

1. An implant for use inside a human body comprising a composite structure adapted to extend around and constrict a tubular organ of the human body, comprising:
a biocompatible self-supporting base material comprising a layer of polyurethane surrounded by a layer of silicone and having surfaces adapted to be exposed to aggressive body cells, when the implant is implanted in the human body, a cell barrier coating comprising a poly(p-xylylene) polymer or a biocompatible metal coating that is coated on said base material surfaces and adapted to prevent body cells from breaking down said base material when the implant is implanted in the human body or for improving at least one physical property of the composite structure other than the composite structure being self-supporting.