Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1995-12-06
1997-06-24
Choi, Kathleen
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283044, 4283084, 4283155, 4283159, 600 37, B32B 700, A61B 1700
Patent
active
056415664
ABSTRACT:
A high strength, porous PTFE sheet material having high strength in all directions within the plane of the sheet material. The sheet material has, within the plane of the sheet, a higher minimum tensile strength, matrix tensile strength, secant modulus and matrix secant modulus than previously known porous PTFE sheet materials. The sheet material is a laminate of multiple layers of porous PTFE film, preferably uniaxially expanded film, wherein the orientation of the direction of the fibrils of any layer varies slightly, such as about ten degrees, from the orientation of the fibrils of the adjacent layer. The sheet material is particularly useful as a surgical repair patch and especially as a blood vessel repair patch because of its high strength, flexibility, biocompatibility and very low rate of suture line bleeding.
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Kranzler Thane L.
Moseley Jon P.
Choi Kathleen
House Wayne D.
W. L. Gore & Associates, Inc.
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