发明名称 |
ANTIOXIDANT DOPING OF CROSSLINKED POLYMERS TO FORM NON-ELUTING BEARING COMPONENTS |
摘要 |
Methods provide a non-eluting antioxidant doped UHMWPE in the form of an implant bearing component. The process includes the steps of: (a) providing a preform; (b) irradiating the preform with gamma-irradiation to crosslink the UHMWPE; (c) doping the crosslinked preform by exposing it to an antioxidant composition at a temperature below the melting point of the UHMWPE; (d) removing the doped material from contact with the antioxidant composition; and then (e) annealing by heating the doped material at a temperature above 30° C. and below the melting point of the UHMWPE; followed by (f) making an implant bearing component from the doped material, wherein at least 1 mm but no more than about 15 mm of material are removed to make the component.
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申请公布号 |
US2009030524(A1) |
申请公布日期 |
2009.01.29 |
申请号 |
US20080179274 |
申请日期 |
2008.07.24 |
申请人 |
BIOMET MANUFACTURING CORP. |
发明人 |
SCHROEDER DAVID W.;FREEDMAN JORDAN H. |
分类号 |
A61F2/30;B29C35/08 |
主分类号 |
A61F2/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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