Röhrenförmige Stent-Graft-Kompositvorrichtung und Verfahren zu ihrer Herstellung

摘要

A stent-graft composite intraluminal prosthetic device comprises an elongated radially adjustable tubular stent, a PTFE stent cover positioned about the exterior surface of the stent and a PTFE liner positioned about the interior surface of the stent. One of the stent cover and the stent liner is formed of a seamless extruded tube and the other of the cover and the liner is formed of an elongated ePTFE sheet. The elongated sheet 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 adustability, and the liner and cover are secured together through the open spaces of the stent. The liner and the cover may be adheringly secured through the spaces by an adhesive, or the cover and the liner may be laminated together through the open spaces of the stent.