Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Reexamination Certificate
2007-03-06
2007-03-06
McClendon, Sanza L. (Department: 1711)
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
C623S013120, C623S016110, C623S018110, C623S019110, C623S020140, C623S021150, C623S021120, C623S022110, C623S011110, C522S109000, C522S110000, C522S111000, C522S112000, C522S157000, C522S161000, C522S150000, C522S074000, C525S191000, C525S240000, C264S464000, C264S211120, C264S211240, C264S171120, C264S171230, C264S171260
Reexamination Certificate
active
11067139
ABSTRACT:
A prosthetic medical device exhibiting improved wear resistance is fabricated by sealing at least one polyolefinic material in an airtight container and providing an inert atmosphere within the airtight container. The polyolefinic material is exposed to an irradiation source to yield a cross-linked irradiated polyolefinic material. At least one non-irradiated polyolefinic material is blended with the irradiated polyolefinic material, and the prosthetic medical device is formed from the blended material. Selectively cross-linked polymeric compositions may be created by blending a specific amount of cross-linked resins with a specific amount of uncross-linked resins then cured into a polymeric matrix whereby the desired degree or percentage of overall cross-linking is obtained. The polymeric material may then be formed directly into a finished article by injection molding the polymeric material.
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Essner Aaron
Wang Aiguo
Howmedica Osteonics Corp.
Lerner David Littenberg Krumholz & Mentlik LLP
McClendon Sanza L.
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