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    Knee prosthesis with accommodation for angular misalignment
    4.
    发明授权
    Knee prosthesis with accommodation for angular misalignment 失效
    膝关节假体与角度不对准

    公开(公告)号：US4714472A

    公开(公告)日：1987-12-22

    申请号：US004525

    申请日：1987-01-20

    申请人： Robert G. Averill ,  Alex Khowaylo ,  Christopher G. Sidebotham

    发明人： Robert G. Averill ,  Alex Khowaylo ,  Christopher G. Sidebotham

    IPC分类号： A61F2/38

    CPC分类号： A61F2/38

    摘要： A knee prosthesis in which articular surface areas of the engaged femoral and tibial components of the prosthesis include surface profile contours lying in a common arcuate profile defined by a medial-lateral radius having an origin lying on the mechanical axis passing through the femoral head of the corresponding hip joint such that limited misalignment of the femoral and tibial components by virtue of angular deviation from the mechanical axis resulting from relative displacement in a medial-lateral direction is tolerated to accommodate the misalignment while maintaining area engagement between the engaged surfaces.

    摘要翻译： 一种膝关节假体，其中所述假体的所接合的股骨和胫骨部件的关节表面区域包括由具有位于机械轴上的原点限定的共同弧形轮廓的表面轮廓轮廓，该原点位于穿过所述股骨头的股骨头的机械轴上 相应的髋关节使得通过由于在中间 - 横向方向上的相对位移而导致的与机械轴的角度偏差来限制股骨和胫骨部件的未对准被允许以适应不对准，同时保持接合表面之间的区域接合。

    Prosthetic implant device
    5.
    发明授权
    Prosthetic implant device 失效
    假体植入装置

    公开(公告)号：US4798610A

    公开(公告)日：1989-01-17

    申请号：US427010

    申请日：1982-09-29

    申请人： Robert G. Averill ,  Alex Khowaylo

    发明人： Robert G. Averill ,  Alex Khowaylo

    IPC分类号： A61F2/32 ,  A61F2/36 ,  A61F2/34

    CPC分类号： A61F2/32 ,  A61F2/3609 ,  A61F2002/3208 ,  A61F2002/3233 ,  A61F2002/325 ,  A61F2002/3258 ,  A61F2002/3611

    摘要： A prosthetic implant device for use in replacing the ball end of a biological joint, the replacement including a spherical head for insertion into a natural socket, an insert in the head, a ball-shaped member captured in the insert and having a neck and a stem for mounting the ball-shaped member on the end of the biological member on which the ball is being replaced, and a radially-expansible ring for capturing the ball-shaped member within the insert the ring having a downwardly and inwardly sloping outer wall and seated in a recess in the insert, the recess having upper and lower end walls for defining upper and lower limits of axial movement of the ring within the recess to permit selective removal of the ball-shaped member from the insert and to prevent inadvertent disengagement of the ball-shaped member from the insert.

    摘要翻译： 一种用于更换生物关节的球端的假体植入装置，该替换包括用于插入到天然插座中的球形头部，头部中的插入件，捕获在插入件中的具有颈部和 用于将球形构件安装在其上被更换球的生物构件的端部上的杆和用于在该插入件内捕获球形构件的径向可扩展的环，该环具有向下且向内倾斜的外壁， 位于插入件中的凹部中，凹部具有上端壁和下端壁，用于限定环在凹部内的轴向运动的上限和下限，以允许从插入件中选择性地移除球形构件并防止意外脱离 球形构件从插入件中。