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1. 发明授权

US5078718A Multi-part method and apparatus for removing pre-placed prosthetic joints and preparing for their replacement 失效
标题翻译：用于去除预先放置的假肢关节并准备更换的多部件方法和装置
公开(公告)号：US5078718A
公开(公告)日：1992-01-07
申请号：US510145
申请日：1990-04-17
申请人： Frederic H. Moll , Milton B. Mccoll , F. T. Watkins , Charles Gresl
发明人： Frederic H. Moll , Milton B. Mccoll , F. T. Watkins , Charles Gresl
IPC分类号： A61F2/46
CPC分类号： A61B17/8847
摘要： A method and apparatus for removing a pre-placed prosthetic joint from a bone cavity and conditioning the cavity for receipt of a replacement joint. The pre-placed joint is first pulled from the mantle of hardened cement holding it within the cavity, thus leaving a cavity within the mantle. A mass of fluid cement is then placed within the cement cavity, after which a pulling tool is inserted into the fluid cement and the fluid cement is permitted to cure to bond with the hardened cement and form an integral mass. The pulling tool has detachable sections or sleeves, each with grip forming elements on its exterior and structure to connect a slap-hammer to its proximal end. Tension is then applied to the each section to remove the section and the cement mantle surrounding it from the bone cavity. The process is repeated for each section until all of the cement mantle is removed.
摘要翻译：一种用于从骨腔去除预置的假体关节并调节腔以接收替换关节的方法和装置。预先放置的接头首先从硬化水泥的地壳中拉出，将其保持在空腔内，从而在地幔内留下一个空腔。然后将大量流体水泥放置在水泥腔内，然后将拉动工具插入流体水泥中，并允许流体水泥固化以与硬化的水泥结合并形成整体。牵引工具具有可拆卸的部分或套筒，每个部分或套筒在其外部具有夹紧形成元件并且将结构连接到其近端。然后将张力施加到每个部分以从骨腔去除该部分和围绕其的水泥套。对于每个部分重复该过程，直到除去所有的水泥套。

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