Patent ID: 7815763
Filing Date: 2010-10-19
Classification: A61F,B29C,B29K,B29L,D04H,Y10T

Abstract:
1. A method of making a single-layer porous membrane for use in medical implants comprising: extruding a continuous fiber-forming biocompatible polymeric material through a reciprocating extrusion head to form an elongated fiber; depositing the fiber with a width of 5 to 500 micrometers onto a substrate in a predetermined pattern of non-crossing traces, the traces extending adjacently from a first end to a second end of the substrate, each trace contacting its adjacent traces in an alternating manner, the traces defining a plurality of pores of predetermined sizes, the fiber having a predetermined viscous characteristic that enables adjacent traces to bond to each other; and thermally drying the biocompatible material on the substrate to provide a stable, single-layer porous membrane.