Importance

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Abstract

A stent-graft composite intraluminal prosthetic device comprises an elongated radially adjustable tubular stent and a polyolefin stent cover positioned about an exterior surface and/or interior surface thereof. The composite device is formed heat melting a film-like layer of polyolefin material onto a stent placed on a mandrel. The film has opposed longitudinal edges which are joined to form a tubular structure. The stent has a plurality of open spaces extending between opposed interior and exterior surfaces to permit radial adjustability, and the stent and cover are secured together through the open spaces of the stent. When both an exterior stent surface and interior stent surface are to be covered, such layers may be adheringly secured through the spaces by an adhesive, or laminated together through the open spaces of the stent.

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First Claim