发明名称 |
Method of forming a polymer component |
摘要 |
This invention relates to a method of forming a polymer component and comprises blending polymer particles with antioxidant to form a mixture in which the antioxidant coats the polymer particles, irradiating the mixture to cross-link the polymer particles therein and forming the irradiated mixture into a consolidated component. The invention also relates to a method of forming an articular surface for a prosthesis and a prosthesis having a polymer articular bearing surface wherein at least one pre-determined portion of the bearing surface is provided with cross-linked polymer bonds. |
申请公布号 |
US9017416(B2) |
申请公布日期 |
2015.04.28 |
申请号 |
US201012819540 |
申请日期 |
2010.06.21 |
申请人 |
|
发明人 |
McMinn Derek J. |
分类号 |
A61F2/32;A61F2/34;A61F2/30;A61F2/46;A61L27/14;A61L27/50;B32B1/00;B32B3/00;B32B7/12;B32B15/08;C08J3/00;C08J3/24;A61F2/38 |
主分类号 |
A61F2/32 |
代理机构 |
Morgan, Lewis & Bockius LLP |
代理人 |
Morgan, Lewis & Bockius LLP |
主权项 |
1. A prosthesis comprising:
a shell; and disposed on the shell, a polymer liner having a concave articular bearing surface opposite the shell, the polymer liner comprising (i) a first cross-linked polymer region and (ii) a second substantially non-cross-linked polymer region molded to the first cross-linked polymer region, wherein (i) exposed portions of the first cross-linked polymer region and the second substantially non-cross-linked polymer region collectively define the concave articular bearing surface, (ii) the exposed portion of the first cross-linked polymer defines a pre-determined wear zone of the concave articular bearing surface, (iii) the pre-determined wear zone does not extend along the entire concave articular bearing surface, (iv) the concave articular bearing surface of the polymer liner terminates at non-concave edges, wherein an exposed surface of a non-concave edge is defined only by an exposed surface of the second substantially non-cross-linked polymer, and (v) the second substantially non-cross-linked polymer region includes a rounded edge that extends over the edge of the shell. |
地址 |
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