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US 7,863,410 B2Granted
Sintering ultrahigh molecular weight polyethylene
AssigneeSmith & Nephew Orthopaedics AG
InventorsPaul Smith, Jeroen Visjager, Theo Tervoort
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Abstract
Methods of producing ultrahigh molecular weight polyethylene compositions of highly beneficial sintering characteristics are disclosed herein. Some embodiments provide for adding small amounts of a co-monomer to the polyethylene to improve various characteristics, including wear resistance.
Claims13
A process comprising:
- sintering polyethylene, said polyethylene having
- a weight average molecular weight in the range of 2,000,000-10,000,000 g/mol;
- a co-monomer content of 0.1-5 wt %;
- and
- a melting temperature of at least 115° C.;
- and
- using the resulting sintered polyethylene in the manufacture of an article for use as a medical implant.
4 more elements
Dependencies are inferred from the claim text.