Surgical implants and method
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United States of America Patent
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Jun 23, 1992
Issued Date -
N/A
app pub date -
Nov 28, 1990
filing date -
Apr 25, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved surgical implant, formed of cobalt-chromium and its alloys in contact with a bearing surface formed by UHMWPE, and a process of its manufacture are disclosed. The improved surgical implant is designed to reduce the wear of the UHMPE component of the surgical implant, enhancing its useful life. The process essentially includes the ion implantation of the cobalt-chromium component, with a resultant increase in its microhardness and a decrease in its coefficient of friction, particularly when articulating against the UHMWPE component.
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