Patent 8158041 was granted and assigned to Bard Peripheral Vascular, Inc. on April, 2012 by the United States Patent and Trademark Office.
Extruded, stretched, sintered tubular PTFE materials are produced which are suited for use in the medical field as liners and covers for expandable stents. The PTFE materials have an unusually low REC (Radial Expansion Coefficient) and RER (Radial Expansion Ratio).