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2. 发明授权

US06428577B1 Mobile bearing knee prosthesis 失效
标题翻译：移动轴承膝关节假体
公开(公告)号：US06428577B1
公开(公告)日：2002-08-06
申请号：US09670186
申请日：2000-09-26
申请人： David Lee Evans , Michael Ries , Greg Marik , Robert Brosnahan , Christopher Patrick Carson , Albert J. Pothier
发明人： David Lee Evans , Michael Ries , Greg Marik , Robert Brosnahan , Christopher Patrick Carson , Albert J. Pothier
IPC分类号： A61F238
CPC分类号： A61F2/3886 , A61F2/3868
摘要： A mobile bearing knee prosthesis enables a surgeon to convert a mobile bearing insert having articular surfaces, supported by a tibial base plate or tray from a rotating and translating prosthesis to one that rotates only. This conversion is accomplished with a fastener or locking member that connects through an opening in the insert to the tibial base plate. This prosthesis can be used as part of a total knee surgery when the surgeon chooses to use a prosthesis that incorporates a movable articular surface. In one embodiment, a projecting portion extends proximally from the insert and cooperates with a cam on the femoral component. The projecting portion can be a post extending up from the proximal surface of the insert and the femoral component includes an intercondylar surface that may contact the post to constrain the relative motion between the femoral component and the insert. In another embodiment, the insert is a two part assembly that includes a larger member with a central opening and a smaller member that fits the opening.
摘要翻译：移动轴承膝关节假体使得外科医生能够将具有由胫骨基板或托盘支撑的关节表面的移动轴承插入件从旋转和平移假体转换成仅旋转的假体。这种转换是通过将插入物中的开口连接到胫骨基板上的紧固件或锁定构件实现的。当外科医生选择使用包含可动关节表面的假体时，该假体可用作全膝关节手术的一部分。在一个实施例中，突出部分从插入件向近侧延伸并与股骨部件上的凸轮配合。突出部分可以是从插入件的近侧表面向上延伸的柱，并且股骨部件包括可以接触柱的髁间表面，以限制股骨部件和插入物之间的相对运动。在另一个实施例中，插入件是两部分组件，其包括具有中心开口的较大构件和适合开口的较小构件。

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