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1. 发明授权

US3969773A Prosthetic knee joint for attachment to a natural or prosthetic leg 失效
标题翻译：假肢膝关节用于附着于天然或假腿
公开(公告)号：US3969773A
公开(公告)日：1976-07-20
申请号：US499565
申请日：1974-08-22
申请人： Alfred Menschik
发明人： Alfred Menschik
IPC分类号： A61F2/38 , A61F1/24 , A61F1/04 , A61F1/08
CPC分类号： A61F2/384
摘要： A femur-engaging upper base and a tibia-engaging lower base of a prosthetic knee joint are positively interconnected by an inextensible and incompressible coupling mechanism allowing the two bases to swing vertically between two relative limiting positions about 135.degree. apart, one of these limiting positions corresponding to a substantial alignment of the femur with the tibia. Throughout the swing, a more forwardly located first point (A) and a more rearwardly located second point (B) on the upper base are held at a substantially fixed distances from a more rearwardly located third point (D) and from a more forwardly located fourth point (C) on the lower base, respectively, these four points thus constituting the fulcra of a four-bar kinematic linkage. The coupling mechanism may be realized with a pair of intersecting rigid links hinged to the bases, arcuate guides in cheek plates for studs laterally projecting from the bases at the aforementioned four points, confronting projections on the bases rollingly engaging each other along curved ridges substantially conforming to the centrodes for the coupler motion of the four-bar linkage, or some combination thereof. Where crossed links are used, their hinges may be constructed as universal joints allowing limited relative rotation of the bases about an axis lying in the swing plane, such rotation being impeded by a link-engaging detent in the position of alignment between femur and tibia.
摘要翻译：假体膝关节的股骨接合的上部基座和胫骨接合的下部基座通过不可伸展和不可压缩的联接机构而正相互连接，允许两个基座在相隔约135°的相对限制位置之间垂直摆动，这些限制位置之一对应于股骨与胫骨的基本对准。在整个摆动过程中，位于上部基座上的更向前定位的第一点（A）和更向后定位的第二点（B）被保持在距离更靠后位置的第三点（D）基本上固定的距离处，并且从更向前定位这四个点分别位于下底座的第四点（C）上，从而构成四杆运动连杆的支点。联接机构可以通过一对铰链到基座的相交的刚性连接件，颊板中的弓形引导件来实现，用于在前述四个点处从基部侧向突出的螺柱，在基部上的相对突出部分沿着基本上一致的弯曲的脊部到四杆连杆的联轴器运动的中心，或其一些组合。在使用交叉连接件的情况下，它们的铰链可以构造为万向接头，允许基部围绕位于摆动平面中的轴线进行有限的相对旋转，这样的旋转被股骨和胫骨之间的对准位置处的连杆接合止动阻碍。

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