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公开(公告)号：US5989261A
公开(公告)日：1999-11-23
申请号：US898360
申请日：1997-07-29
申请人： Peter Stanley Walker , John Nevil Insall , Jonathan Blamey , Michael Wadcock , Mark Alan Heldreth , Shawn Elliott McGinley , Steven A. Zawadzki
发明人： Peter Stanley Walker , John Nevil Insall , Jonathan Blamey , Michael Wadcock , Mark Alan Heldreth , Shawn Elliott McGinley , Steven A. Zawadzki
CPC分类号： A61B17/1675 , A61B17/1659 , A61F2/4684 , A61B17/157 , A61F2/3859 , A61F2/3872 , A61F2/389 , A61F2002/30187 , A61F2002/30393 , A61F2002/304 , A61F2002/30878 , A61F2220/0025 , A61F2230/0034
摘要： The invention provides means for evaluating the fit of a knee replacement prosthesis on a resected tibial surface. A provisional instrument for this purpose includes a positioning tray having a peripheral profile corresponding to that of the tibial platform of the prosthesis, the tray having an upper surface and an under surface which is substantially flat and free from projections and the tray having a plurality of holes for receiving pins for temporarily attaching the positioning tray in a desired position on the resected tibial surface. Also disclosed is a jig for guiding, drilling and broaching operations, the jig having an aperture which is shaped to guide the broach. In addition, the invention includes a tibial broach which includes a hollow body having an upper end and a lower end and having an anvil at its upper end, an interior face and a posterior face which slopes downwardly towards a lower end, the posterior face having a series of teeth which are formed in the hollow body, such that bone cut by the teeth as the broach is driven into an intramedullary canal of a tibia passes into the hollow body.
摘要翻译： 本发明提供了用于评估膝关节置换假体在切除的胫骨表面上的拟合的装置。 用于此目的的临时器具包括具有对应于假体的胫骨平台的外周轮廓的定位托盘，托盘具有基本上平坦且没有突起的上表面和下表面，并且托盘具有多个 用于接收销的孔，用于临时将定位托盘附接到被切除的胫骨表面上的期望位置。 还公开了一种用于引导，钻孔和拉削操作的夹具，该夹具具有成形为引导拉刀的孔。 此外，本发明包括胫骨拉刀，其包括具有上端和下端的中空本体，并且在其上端具有砧座，内表面和向后朝向下倾斜的后表面，所述后表面具有 形成在中空体中的一系列齿，使得当拉刀驱动到胫骨的髓内管中时由齿切割的骨进入中空体。
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公开(公告)号：US6068658A
公开(公告)日：2000-05-30
申请号：US37051
申请日：1998-03-09
CPC分类号： A61F2/3868 , A61F2/3886 , A61F2002/30187 , A61F2002/30301 , A61F2002/30393 , A61F2002/304 , A61F2002/30502 , A61F2002/30532 , A61F2002/30878 , A61F2220/0025 , A61F2230/0034 , A61F2230/0095
摘要： The prosthesis comprises a femoral component (2) having at least one substantially spheroidal condylar bearing surface (10,11), a tibial component (6) including a tibial platform (20), and a plastics meniscal component (7) located between the condylar bearing surface (10,11) an the tibial component (6) and being slidable on the platform (20). The meniscal component (7) is retained on a guide (23) upstanding from the platform (20). The guide (23) includes a post (24) and a cap (25) which is a snap-fit in a recess (30) in the meniscal component (7). The guide (23) is slidable in a track (32) within the meniscal component (7) so that movement of the meniscal component (7) in the anterior/posterior direction (A-P) is limited by impingement of the meniscal component (7) on the post (24) and/or on a rail member (21) projecting from the surface of the tibial platform (20). To install the prosthesis, a femur (1) is resected to provide a base for receiving the femoral component (2), which is retained in the resected femur by pins (3). The tibia (4) is resected to provide a flat base into which the tibial component (6) is fixed by a stem (5).
摘要翻译： 所述假体包括股骨部件（2），所述股骨部件（2）具有至少一个基本上为球形的髁承载表面（10,11），包括胫骨平台（20）的胫骨部件（6）和位于所述髁突之间的塑料半月板部件 支撑表面（10,11）和胫骨部件（6）并且可在平台（20）上滑动。 半月板部件（7）保持在从平台（20）直立的引导件（23）上。 引导件（23）包括柱（24）和盖（25），其是卡扣配合在半月板部件（7）中的凹部（30）中。 引导件23可以在半月板部件（7）内的轨道（32）中滑动，使得半月板部件（7）在前/后方向（AP）的移动受到半月板部件（7）的冲击的限制， 在从胫骨平台（20）的表面突出的柱（24）和/或轨道构件（21）上。 为了安装假体，切除股骨（1）以提供用于接收股骨部件（2）的基部，该股骨部件（2）通过销（3）保持在切除的股骨中。 胫骨（4）被切除以提供平坦的基部，胫骨部件（6）由杆（5）固定到其中。
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