公开(公告)号：US5458646A

公开(公告)日：1995-10-17

申请号：US146534

申请日：1993-11-01

申请人： A. Alan Giachino ,  Alan J. Yeadon

发明人： A. Alan Giachino ,  Alan J. Yeadon

IPC分类号： A61B17/86 ,  A61F2/00 ,  A61F2/30 ,  A61F2/42

CPC分类号： A61F2/4261 ,  A61B17/86 ,  A61F2002/30253 ,  A61F2002/305 ,  A61F2002/30616 ,  A61F2002/30777 ,  A61F2002/30787 ,  A61F2002/30794 ,  A61F2002/30892 ,  A61F2220/0025 ,  A61F2230/0076 ,  A61F2310/00023 ,  A61F2310/00029

摘要： A wrist prosthesis having a distal supporting part and a part for proximal support of the prosthesis on both the radius and the ulna. The proximal part of the prosthesis may be a plate configured to be supported on substantially unaltered surfaces of the radial and ulnar epiphyses when the radius and ulna are fused at the radial-ulnar joint. The distal part of the prosthesis may be shaped to be supported by surfaces on at least three of the distal carpal bones. The prosthesis may include an intermediate component having a receptacle portion distally defining a concave bearing surface. The distal part may have a proximal side defining an ellipsoidal convex bearing surface having a generally part-circular cross-section. This invention also provides a method of implanting a wrist prosthesis which is configured to be attached to the distal ends of the radius and ulna which includes the steps of fixably attaching the prosthesis to the ends of the radius and ulna and removing a segment of the ulnar diaphysis to permit supination and pronation.

摘要翻译： 一种腕关节假体，其具有远端支撑部分和用于假体在半径和尺骨上近端支撑的部分。 假体的近端部分可以是被配置为当半径和尺骨在径向尺骨关节处熔合时被支撑在径向和尺骨骨架的基本未改变的表面上的板。 假体的远端部分可以被成形为由远端腕骨中的至少三个的表面支撑。 假体可以包括具有远端限定凹入支承表面的容置部分的中间部件。 远侧部分可以具有限定具有大体上部分圆形横截面的椭圆形凸起支承表面的近侧。 本发明还提供了一种植入腕关节假体的方法，该假体被构造成附接到半径和尺骨的远端，其包括将假体固定地附接到半径和尺骨的端部并且移除尺骨的一部分的步骤 骨干允许仰卧位和旋转。