Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-03-31
2010-10-12
Jagannathan, Vasu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C428S339000, C428S500000, C428S523000, C264S241000, C623S011110, C623S023580, C623S023590, C623S023600
Reexamination Certificate
active
07812098
ABSTRACT:
Disclosed is a bearing material of a medical implant comprising a polymer such as UHMWPE and a surface active agent that is not covalently bonded to the polymer. The bearing material has a reduced wear rate. Also disclosed is a method of reducing the wear rate of a polymeric bearing material of a medical implant when it articulates against a hard counterface in the presence of synovial fluid, the method comprising providing a surface active agent in the synovial fluid in close proximity to the bearing surface, the hard counterface, or both.
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Ernsberger Craig
Liao Yen-Shuo
Salvati Lawrence
Boyle Robert C
Depuy Products, Inc.
Jagannathan Vasu
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