Selective adherence of stentgraft coverings, mandrel and method of making stent-graft device

摘要

A method of making an endoluminal stent-graft, comprises the steps of:
placing a first covering member composed of a boicompatible polymer on a surface;
placing a radially expandable stent over said first covering member;
laying down a layer of an activatable adhesive material over the first covering member and the stent;
placing a second covering member composed of a biocompatible polymer over the stent; and
inscribing a pattern of electromagnetic energy on the stent-graft to activate the adhesive forming a pattern of bonds between the covering members which bonds corresponds to the pattern of electromagnetic energy and which bonds allow portions of the stent to move freely when the stent expands.