A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 27/16 (2006.01) C08J 3/24 (2006.01) C08J 3/28 (2006.01) C08K 5/07 (2006.01) C08L 23/06 (2006.01)
Patent
CA 2739065
A method for producing a wear resistant polyethylene medical implant includes forming a medical implant, such as an orthopedic implant, made at least partially of ultra high molecular weight polyethylene (UHMWPE). The polyethylene may be irradiated with gamma ray or e-beam radiation to form free radicals and then crosslinked to eliminate free radicals prior to exposure to oxygen. The so treated bearing surface of the crosslinked polyethylene is then coated with a photoinitiator. Thereafter the bearing material is photocrosslinked with ultra-violet (UV) radiation. The photocrosslinking process can also be applied to non-crosslink UHMWPE.
Hanson Keenan Michael
He Shulin
Lawrynowicz Daniel E.
Wang Aiguo
Yau Shi-Shen
Fasken Martineau Dumoulin Llp
Howmedica Osteonics Corp.
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