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    • 36. 发明申请
    • COUPLED KNEE PROSTHESIS WITH A ROTATIONAL BEARING
    • 加上膝关节假体转动承载
    • WO03002039A3
    • 2003-05-01
    • PCT/EP0206900
    • 2002-06-21
    • LINK WALDEMAR GMBH COKELLER ARNOLD
    • KELLER ARNOLD
    • A61F2/64A61F2/00A61F2/30A61F2/38
    • A61F2/384A61F2/385A61F2/3859A61F2/389A61F2002/30354A61F2002/30364A61F2002/30372A61F2002/30474A61F2002/30574A61F2002/30878A61F2220/0025A61F2220/0033
    • The invention relates to a knee prosthesis comprising a femur component (1) with condylar sliding surfaces (20) which are rigidly interconnected, a tibial component (2) provided with a tibial platform (7) which is linked to the former in a non-rotatable manner and which exhibits tibial sliding surfaces (21) which cooperate with the condylar sliding surfaces (20). Said prosthesis also comprises a coupling device (10) which forms a flexing bearing (11) with the femur component (1) and a rotational bearing (12) with the tibial component (2), the axis (12) of said rotational bearing being inclined in the tibial direction (5). The invention aims to achieve a more advantageous distribution of power in the prosthesis and a restoring force when the prosthesis parts rotate. To do so, in the region (24) of the tibial sliding surfaces (21), which is responsible for carrying most of the load in the extended position and which cooperates with the condylar sliding surfaces (20), the normal (25) is less inclined relative to the tibial direction (5) than the axis (12) of the rotational bearing, in the lateral view or sagittal section.
    • 具有膝关节假体包括具有刚性地相互连接的髁(20)的股骨部件(1),胫骨部件(2)与此胫骨平台不可旋转地连接(7),其与胫骨滑动面髁滑动面(20),(21),和 联接装置(10)与所述股骨部件(1)是一个弯曲的轴承(11),并与胫骨部件(2)形成一个旋转轴承(12),其轴线(12)相对于胫骨方向(5)是倾斜的。 为了实现在假体上的更有利的力分布和在所述假体部件的旋转的恢复力,该装置与正常(25)上与所述髁滑动表面在伸出位置的主负载传递配合(20)的区域(24)是这样的,在胫骨 在侧视图中,并在矢状截面少相对于胫骨方向(5)的滑动面(21)比所述转动轴承的轴线(12)倾斜。