Continuously flat-woven implantable tubular prostheses have seamless woven sections which gradually change the number of warp yarns to smoothly transition, i.e., taper, from one diameter to another. Multi-diameter endoluminal grafts having a variety of shapes and configurations are made using a seamless...http://www.google.se/patents/US6136022?utm_source=gb-gplus-sharePatent US6136022 - Shaped woven tubular soft-tissue prostheses and methods of manufacturing the same
