Antioxidant stabilized crosslinked ultra-high molecular weight polyethylene for medical device applications

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United States of America Patent

PATENT NO 9926432
SERIAL NO

14983006

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Abstract

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An antioxidant combined with UHMWPE prior to subjecting the UHMWPE to crosslinking irradiation. In one exemplary embodiment, the antioxidant is tocopherol. After the antioxidant is combined with the UHMWPE, the resulting blend may be formed into slabs, bar stock, and/or incorporated into a substrate, such as a metal, for example. The resulting product may then be subjected to crosslinking irradiation. In one exemplary embodiment, the UHMWPE blend is preheated prior to subjecting the same to crosslinking irradiation. Once irradiated, the UHMWPE blended product may be machined, packaged, and sterilized in accordance with conventional techniques.

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Patent Owner(s)

Patent OwnerAddress
ZIMMER INCWARSAW IN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brinkerhuff, Hallie E Warsaw, US 17 476
Gsell, Ray Hubert, US 13 285
Knight, John Warsaw, US 57 921
Pletcher, Dirk Walkerton, IN 21 343
Rowe, Toni Bremen, IN 10 230
Rufner, Alicia Columbia, IN 14 325
Schneider, Werner Rafz, CH 96 1108

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