Method of forming a vascular prosthetic structure including expanded PTFE and graphite

摘要

A method of forming a vascular prosthetic structure, including steps of: mixing polytetrafluoroethylene resin with graphite powder to create a mixture; compacting the mixture to form a preform; extruding the preform to form an extrudate, expanding the extrudate to form an expanded structure having a plurality of irregularly spaced nodes interconnected by fibrils; and sintering the expanded structure to form the vascular prosthetic structure.