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    Instrument system for preparing a distal femur for a posteriorly stabilized femoral component of a knee prosthesis
    5.
    发明授权
    Instrument system for preparing a distal femur for a posteriorly stabilized femoral component of a knee prosthesis 失效
    用于制备用于膝关节假体的后稳定的股骨部件的远端股骨的仪器系统

    公开(公告)号：US5769854A

    公开(公告)日：1998-06-23

    申请号：US703597

    申请日：1996-08-23

    申请人： Adam C. Bastian ,  Marc G. Weissman ,  Michael E. Wolak

    发明人： Adam C. Bastian ,  Marc G. Weissman ,  Michael E. Wolak

    IPC分类号： A61B17/15 ,  A61B17/16 ,  A61B17/58 ,  A61B17/60

    CPC分类号： A61B17/1675 ,  A61B17/1604 ,  A61B17/155

    摘要： An instrument system and method are disclosed for preparing a distal femur for the implant of a femoral component of a knee prosthesis by the removal of natural bone in the intercondylar area of the distal femur to prepare a femoral notch, including a patella recess, subsequent to establishing distal, anterior and chamfer surfaces at the distal femur. The instrument system includes a femoral notch cutting guide for placement over the distal, anterior and chamfer surfaces of the prepared distal femur, and a femoral notch cutting punch. The femoral notch cutting punch is engaged with a first guideway in the femoral notch cutting guide to remove natural bone from the intercondylar area and establish the patella recess, and subsequently is engaged with a second guideway in the femoral notch cutting guide, transverse to the first guideway, to remove natural bone from the intercondylar area and complete the femoral notch.

    摘要翻译： 公开了一种用于通过移除股骨远端的髁间区域中的天然骨来制备用于植入膝关节假体的股骨部件的远端股骨的器械系统和方法，以制备包括髌骨凹陷在内的股骨切口 在股骨远端建立远端，前方和倒角面。 仪器系统包括用于放置在所制备的远端股骨的远端，前和倒角表面上的股骨切口切割引导件和股骨切口切割冲头。 股骨切口切割冲头与股骨切口切割引导件中的第一导轨接合以从髁间区域移除天然骨骼并建立髌骨凹部，并且随后与股骨切口切割引导件中横向于第一部分的第二导轨接合 导轨，以从髁间区域去除天然骨并完成股骨切口。

    Patellar implant component and method
    6.
    发明授权
    Patellar implant component and method 失效
    髌骨植入物组成及方法

    公开(公告)号：US5871540A

    公开(公告)日：1999-02-16

    申请号：US690306

    申请日：1996-07-30

    申请人： Marc G. Weissman ,  Mark A. Kester

    发明人： Marc G. Weissman ,  Mark A. Kester

    IPC分类号： A61F2/00 ,  A61F2/30 ,  A61F2/38

    CPC分类号： A61F2/3877 ,  A61F2002/30125 ,  A61F2002/30225 ,  A61F2002/30228 ,  A61F2002/3082 ,  A61F2002/30892 ,  A61F2230/0008 ,  A61F2230/0069

    摘要： A patellar component of a prosthetic knee joint includes a domed portion having a peak offset from the center of the patellar component for effecting compensation for the displacement of the mechanical joint line upon implant of the prosthetic knee joint so as to enable affixation of the patellar component within the natural patella with sufficient bone coverage while attaining appropriate sliding engagement of the patellar component with a patellar groove in the femoral component of the prosthetic knee joint during articulation of the knee.

    摘要翻译： 假肢膝关节的髌骨部件包括具有从髌骨部件的中心偏离的峰值的圆顶部分，用于在假牙膝关节植入时进行机械关节线的移位补偿，以便能够固定髌骨部件 在具有足够的骨覆盖的天然髌骨内部，同时在膝关节期间在假膝关节的股骨部件中获得髌骨部件与髌骨槽的适当滑动接合。

    Knee prosthesis with increased balance and reduced bearing stress
    7.
    发明授权
    Knee prosthesis with increased balance and reduced bearing stress 失效
    膝关节假体具有增加的平衡和减少的轴承应力

    公开(公告)号：US5824100A

    公开(公告)日：1998-10-20

    申请号：US741435

    申请日：1996-10-30

    申请人： Mark A. Kester ,  Marc G. Weissman

    发明人： Mark A. Kester ,  Marc G. Weissman

    IPC分类号： A61F2/00 ,  A61F2/30 ,  A61F2/38 ,  A61F2/42

    CPC分类号： A61F2/3886 ,  A61F2002/30878 ,  A61F2002/30884 ,  A61F2310/00029

    摘要： A knee prosthesis in which engagement between the femoral component and the tibial component of the knee prosthesis takes place at a contact area along articular surface areas including complementary medial-lateral surface profile contours having a single medial-lateral articular radius defining an arcuate profile, and anterior-posterior surface profile contours along the femoral component and the tibial component, the anterior-posterior surface profile contour of the femoral component having an essentially constant anterior-posterior articular radius throughout regions of the femoral component which contact the tibial component within a primary range of flexion, the center of the anterior-posterior articular radius being located along a line extending laterally between the medial and lateral attachment points of the collateral ligaments of the knee, such that the contact area along the articular surface areas is maintained at a maximum throughout at least the primary range of flexion for minimizing stresses in the tibial component and better balancing tension in the collateral ligaments during articulation of the knee prosthesis at least within the primary range of flexion, and further including an eminence projecting from the tibial component toward the femoral component, and a follower on the femoral component for engaging the eminence for controlled restraint of the femoral component during a limited portion of the primary range of flexion.

    摘要翻译： 膝关节假体，其中膝关节假体的股骨部件和胫骨部件之间的接合发生在沿着关节表面区域的接触区域，包括具有限定弓形轮廓的单个内侧 - 关节半径的互补的内侧 - 侧面轮廓轮廓，以及 沿着股骨部件和胫骨部件的前后表面轮廓轮廓，股骨部件的前 - 后表面轮廓轮廓在股骨部件的整个区域具有基本上恒定的前 - 后关节半径，所述股骨部件在主要范围内接触胫骨部件 的前后关节半径的中心位于沿着膝盖的副韧带的内侧和外侧附接点之间横向延伸的线上，使得沿着关节表面区域的接触区域被保持在最大程度 至少主要的屈曲范围 用于最小化胫骨部件中的应力并且在至少在主要的屈曲范围内关节膝关节假体的关节期间更好地平衡侧副韧带中的张力，并且还包括从胫骨部件向股骨部件伸出的隆起部， 股骨部件，用于在主要屈曲范围的有限部分内接合用于受控约束的股骨部件。