Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Polymerizing – cross-linking – or curing
Reexamination Certificate
2006-08-18
2010-12-07
Berman, Susan W (Department: 1796)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Polymerizing, cross-linking, or curing
C522S075000, C522S161000, C526S352000, C623S011110
Reexamination Certificate
active
07846376
ABSTRACT:
The present invention generally provides implantable articles and methods of forming implantable articles from a crosslinked ultrahigh molecular weight polyethylene (“UHMWPE”) blend stabilized with Vitamin E. The crosslinked UHMWPE blend may be prepared by combining the UHMWPE material and vitamin E prior to irradiating the UHMWPE blend with electron beam radiation at a sufficient radiation dose rate to induce crosslinking. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements.
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“New Joint Replacement Material Developed at MGH put to first Clinic Use” news release from Massachusetts Gene
Abt Niels A.
Schneider-Storrer Werner
Berman Susan W
Cook Alex Ltd.
Zimmer GmbH
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