Abstract: The present invention provides an implantable prosthesis and more specifically, an implantable tubular textile prosthesis comprising a biocompatible fabric having inner and outer surfaces and first and second ends; the fabric having a textile construction comprising cold drawn PTFE yarns having a substantially uniform denier and high molecular orientation. Use of cold drawn PTFE yarns result in implantable prostheses that have excellent abrasion resistance, strength and lubricity properties. Useful textile constructions include weaves, knits, braids, filament windings, spun windings and combinations thereof. The prostheses of the present invention are lubricious and have characteristics that closely resemble the properties of a natural body lumen.

Abstract: The present invention provides an implantable prosthesis and more specifically, an implantable tubular textile prosthesis comprising a biocompatible fabric having inner and outer surfaces and first and second ends; the fabric having a textile construction comprising cold drawn PTFE yarns having a substantially uniform denier and high molecular orientation. Use of cold drawn PTFE yarns result in implantable prostheses that have excellent abrasion resistance, strength and lubricity properties. Useful textile constructions include weaves, knits, braids, filament windings, spun windings and combinations thereof. The prostheses of the present invention are lubricious and have characteristics that closely resemble the properties of a natural body lumen.

Abstract: The present invention provides for a method of cold drawing polymeric yarns suitable for use in implantable medical devices, such as vascular grafts. The method of the present invention produces cold drawn polymeric yarns that have a substantially uniform linear density and a highly oriented molecular structure as well as good lubricity, non-thrombogenicity and biocompatibility. In one embodiment of the present invention there is provided a method of cold drawing multi-filament PTFE yarns include the steps of maintaining the PTFE yarn at a temperature below the glass transition temperature of the yarn, drawing the yarn at such temperature over a first roller rotated about its axis at a first speed and a second roller rotated about its axis at a speed faster than the speed of the first roller to a selected denier and to increase molecular orientation; and twisting the drawn yarn.

Abstract: The present invention provides an implantable prosthesis and more specifically, an implantable tubular textile prosthesis comprising a biocompatible fabric having inner and outer surfaces and first and second ends; the fabric having a textile construction comprising cold drawn PTFE yarns having a substantially uniform denier and high molecular orientation. Use of cold drawn PTFE yarns result in implantable prostheses that have excellent abrasion resistance, strength and lubricity properties. Useful textile constructions include weaves, knits, braids, filament windings, spun windings and combinations thereof. The prostheses of the present invention are lubricious and have characteristics that closely resemble the properties of a natural body lumen.

Abstract: The present invention provides for a method of cold drawing polymeric yarns suitable for use in implantable medical devices, such as vascular grafts. The method of the present invention produces cold drawn polymeric yarns that have a substantially uniform linear density and a highly oriented molecular structure as well as good lubricity, non-thrombogenicity and biocompatibility. In one embodiment of the present invention there is provided a method of cold drawing multi-filament PTFE yarns include the steps of maintaining the PTFE yarn at a temperature below the glass transition temperature of the yarn, drawing the yarn at such temperature over a first roller rotated about its axis at a first speed and a second roller rotated about its axis at a speed faster than the speed of the first roller to a selected denier and to increase molecular orientation; and twisting the drawn yarn.