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    • 118. 发明申请
    • KNEE JOINT PROSTHESIS AND RELATED METHOD
    • KNEE JOINT PROSTHESIS和相关方法
    • WO2011003621A2
    • 2011-01-13
    • PCT/EP2010/004195
    • 2010-07-09
    • MEDIZINISCHE HOCHSCHULE HANNOVERRICHTER, BernaHURSCHLER, ChristofOSTERMEIER, Sven
    • RICHTER, BernaHURSCHLER, ChristofOSTERMEIER, Sven
    • A61F2/38A61F2/30B24B31/00
    • A61F2/3886A61F2/3094A61F2/3868A61F2/468A61F2002/30365A61F2002/30369A61F2002/30528A61F2002/30934A61F2002/3895A61F2220/0025A61F2220/0033A61F2310/00203A61F2310/00239B24B31/003Y10T29/49826
    • The present invention relates to a knee joint prosthesis (1) having: a tibial component (2) and a femoral component (3). The tibial component (2) includes a fixation portion (10) adapted to be fixed to an upper end of a prepared tibia (T) in a patient, and a ceramic bearing portion (30) presenting at least one articulation surface (32). The femoral component (3) is adapted to be fixed to a lower end of a prepared femur (F) in a patient, and comprises a ceramic body portion (50) presenting at least one articulation surface (56) for engagement with the respective articulation surface(s) of the tibial component (2). The articulation surfaces (32, 56) of the tibial and femoral components (2, 3) are configured for essentially congruent engagement over a full range of movement of the prosthesis, and the bearing portion (30) of the tibial component (2) is adapted for movement relative to the fixation portion (10). The invention also provides a method of finishing articulation surfaces (32, 56) of ceramic components of a knee joint prosthesis, including the steps of combining the ceramic bearing portion (30) and the ceramic body portion (50) such that respective articulation surfaces (32, 56) are brought into engagement with a working substance (S) provided between them; and imparting relative movement to the bearing portion (30) and/or the body portion (50) such that the articulation surfaces (32, 56) repeatedly slide over one another, whereby friction forces generated between the articulation surfaces (32, 56) and the working substance (S) act to finish the surfaces simultaneously.
    • 膝关节假体(1)本发明涉及一种具有胫骨部件(2)和股骨部件(3)的膝关节假体(1)。 胫骨部件(2)包括适于固定在患者中的制备的胫骨(T)的上端的固定部分(10)和呈现至少一个关节表面(32)的陶瓷轴承部分(30)。 股骨部件(3)适于固定在患者体内的预备的股骨(F)的下端,并且包括陶瓷主体部分(50),其呈现至少一个关节表面(56),用于与相应的关节 胫骨组件(2)的表面。 胫骨和股骨部件(2,3)的关节表面(32,56)构造成用于在假体的整个运动范围上基本上一致地接合,并且胫骨部件(2)的支承部分(30)是 适于相对于固定部分(10)移动。 本发明还提供了一种完成膝关节假体的陶瓷部件的关节表面(32,56)的方法,包括以下步骤:将陶瓷轴承部分(30)和陶瓷体部分(50)组合,使得相应的关节表面 32,56)与设置在它们之间的工作物质(S)接合; 并且相对于轴承部分(30)和/或主体部分(50)相对运动,使得铰接表面(32,56)彼此重复地滑动,由此在铰接表面(32,56)和 工作物质(S)同时完成表面。