Patent ID: 7273493
Filing Date: 2007-09-25
Classification: A61F,Y10S

Abstract:
1. A method for making a stent-graft, comprising: providing a biocompatible material having a textured surface layer, placing the biocompatible material onto a mandrel having a body, a proximal end, and a distal end, wherein the biocompatible material is positioned such that the textured surface layer faces the body of mandrel, providing a tubular stent having a proximal end, a distal end, and a peripheral wall with a plurality of openings, coupling a collar to the proximal end of the stent, the collar having an atraumatic proximal end, a distal end, and a plurality of barbs extending distally from the distal end, wherein the collar is coupled to the stent by welding the distal end of the collar to the proximal end of the stent, positioning the stent and collar over the mandrel and over the biocompatible material, pulling the biocompatible material distally over the peripheral wall until the textured surface layer of the biocompatible material is disposed over the collar and an outer surface of the peripheral wall of the stent, securing the biocompatible material to the stent using a plurality of welds extending through a plurality of the openings in the peripheral wall of the stent and contacting the biocompatible material, and removing the stent and collar from the mandrel.