发明名称 |
Artificial joint made from zirconia-alumina composite ceramic |
摘要 |
An artificial joint made from a zirconia-alumina composite ceramic and having the capability of providing a good joint motion for a long time period with a high degree of reliability is provided. This artificial joint is composed of a first bone member and a second bone member, which is slidably engaged to a part of the first bone member to form a joint portion. At least one of the first and second bone members is made from the zirconia-alumina composite ceramic comprising a matrix phase of zirconia grains and a second phase of alumina grains dispersed in the matrix phase. The zirconia grains contains ceria as a stabilizer in such an amount that the matrix phase is largely composed of tetragonal zirconia. In addition, this composite ceramic has an average grain size of 0.1 to 1 mum, preferably 0.1 to 0.8 mum, and particularly preferably 0.1 to 0.65 mum.
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申请公布号 |
US2002198602(A1) |
申请公布日期 |
2002.12.26 |
申请号 |
US20020110043 |
申请日期 |
2002.06.11 |
申请人 |
NAWA MASAHIRO;MATSUSHITA TOMIHARU;KANAMARU MORIYOSHI;NAKAMURA TAKASHI |
发明人 |
NAWA MASAHIRO;MATSUSHITA TOMIHARU;KANAMARU MORIYOSHI;NAKAMURA TAKASHI |
分类号 |
A61B17/86;A61F2/00;A61F2/30;A61F2/32;A61F2/34;A61F2/36;A61L27/42;(IPC1-7):A61F2/28 |
主分类号 |
A61B17/86 |
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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