Abstract: Disclosed are vascular grafts including an expanded copolymer of tetrafluoroethylene (TFE) and perfluoropropylene vinyl ether (PPVE). In certain embodiments, the copolymer includes between about 0.01% and about 1.5% PPVE. Vascular grafts exhibit superior performance properties, e.g., radial strength, and suture strength, and manufacturing properties, e.g., sinter time. Methods of forming vascular grafts from the copolymer also are described.

Abstract: A graft has a seamless flow dividing structure. A method of manufacturing the flow dividing graft structure includes providing a first section of graft material having at least one side, a first end, and a second end. An opening is drawn out through the at least one side. A second section of graft material is coupled with the opening. An angled section is formed along the first section of graft material. The angled section provides a seamless division of flow supplied from the second section to the first section and directs the flow to each of the first and second ends of the first graft material. The resulting graft structure includes a main graft section. A branch graft section is coupled with the main graft section at an angled divider section. The angled divider section is seamless and is suitable for dividing flow through the flow dividing graft structure.