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    Alignment guide for insertion of stem prosthesis
    3.
    发明授权
    Alignment guide for insertion of stem prosthesis 失效
    用于插入假体的对准指导

    公开(公告)号：US06165177A

    公开(公告)日：2000-12-26

    申请号：US220717

    申请日：1998-12-24

    申请人： Stephen Wilson ,  Anthony P. Sanders ,  Michael S. Varieur ,  Mark Allan Manasas ,  Andrew Ira Spitzer

    发明人： Stephen Wilson ,  Anthony P. Sanders ,  Michael S. Varieur ,  Mark Allan Manasas ,  Andrew Ira Spitzer

    IPC分类号： A61F2/00 ,  A61F2/30 ,  A61F2/36 ,  A61F2/46 ,  A61B17/58 ,  A61F2/32

    CPC分类号： A61F2/4607 ,  A61F2/36 ,  A61F2/367 ,  A61F2/3676 ,  A61F2002/30113 ,  A61F2002/30332 ,  A61F2002/30355 ,  A61F2002/30795 ,  A61F2002/30828 ,  A61F2002/3625 ,  A61F2002/365 ,  A61F2002/4623 ,  A61F2002/4681 ,  A61F2002/4687 ,  A61F2220/0033 ,  A61F2230/0006

    摘要： A method and tool for inserting a prosthetic stem component in an aligned position into a prepared bone cavity. The bone is prepared by removing bone material from the bone canal and preferably also machining an entry opening of a predetermined shape and desired orientation in the bone, or marking the plane of the joint on the bone end. The tool includes an upper component that engages the top of the prosthesis stem to fix its rotational alignment, and an arm that extends to the opening in the bone and is aligned at its distal end. The upper component rides along the arm, and orients the stem with respect to the bone as the stem is inserted. The tool may include a lower element that engages the machined or marked bone and holds the arm to orient the head of the prosthesis. Optionally, the lower element may guide the distal stem. Alternatively, the guide may include an arm that simply points to, contacts or fastens at the bone end, orienting the prosthesis insertion without sighting errors. In a pointer or pin assembly which extends to an alignment point on the proximal femur, the upper portion may clamp to the femoral component head or neck, and may include a sliding bushing, that allows the guide to remain rigidly coupled as the stem is progressively advanced in the femoral canal. Articulation may be provided by a pivot mounting of the arms and bushing, and the bushing may swivel as it rides along a post, rail or pin, the lower end of which remains pointed to, or driven into, an alignment mark scribed at the medial periphery of the cut surface of the proximal femur. Alternatively, a lower alignment body may fit against a machined bone surface to fix the orientation of a linking arm in one plane, with a sliding coupling to the upper part of the prosthesis to maintain that orientation as the stem is driven down into contact with the prepared bone surface.

    摘要翻译： 一种用于将对准位置的假肢部件插入准备的骨腔中的方法和工具。 通过从骨管中除去骨材料并且优选还在骨中加工具有预定形状和期望取向的入口，或者在骨端标记关节的平面来制备骨。 该工具包括接合假肢杆的顶部以固定其旋转对准的上部部件，以及延伸到骨骼中的开口并在其远端对准的臂。 上部组件沿着手臂骑行，并且当杆插入时将杆相对于骨定向。 该工具可以包括接合加工或标记的骨并且保持臂以使假体的头部定向的下部元件。 可选地，下部元件可以引导远端杆。 或者，引导件可以包括仅在骨端部指向，接触或紧固的臂，使假体插入物定向而没有发现错误。 在延伸到近端股骨上的对准点的指针或销组件中，上部可以夹持到股骨部件头部或颈部，并且可以包括滑动衬套，其允许引导件在杆被逐渐地保持刚性联接 先进的股骨管。 铰接可以通过臂和衬套的枢转安装来提供，并且衬套可以沿着柱，轨或销旋转，其下端保持指向或驱动到在中间刻划的对准标记 股骨近端切割面周边。 或者，下对准体可以装配在加工的骨表面上，以将连接臂的取向固定在一个平面中，通过与假体的上部的滑动联接来保持该方向，因为杆被驱动向下与接触 准备骨表面。