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    • 4. 发明申请
    • TOOL FOR REMOVING BROKEN INTRAMEDULLARY RODS
    • 用于去除破碎的内窥镜的工具
    • US20070233154A1
    • 2007-10-04
    • US11672621
    • 2007-02-08
    • Shreedhar KaleMatthew C. KlimashGlenn A. Rupp
    • Shreedhar KaleMatthew C. KlimashGlenn A. Rupp
    • A61F2/00
    • A61B17/921
    • A broken intramedullary rod removal tool for extracting the distal end of a broken intramedullary rod from bone in which it is embedded. In a first embodiment the tool has an extraction shaft, an expansion rod disposed and longitudinally movable within the shaft, a strike plate adapter secured to the proximal end of the extraction shaft, a thumb screw secured to the strike plate adapter, and a strike plate secured to the strike plate adapter. The distal end of the extraction shaft is inwardly tapered and has a split-bulb tip, so that the expansion shaft distal end can be flared out by insertion of the distal end of the expansion shaft therein, to expand the tip so that it engages the distal end of the broken intramedullary rod, thus permitting the distal portion of the broken rod to be removed by striking the strike plate to force out the expansion shaft and tip-engaged broken rod end. In a second embodiment the split-bulb tip in its relaxed position is outwardly flared to engage the distal end of the broken intramedullary rod and is initially inwardly deflected by a controlling cap to permit the tip to be moved distally within a casing to a position where the tip can engage the broken end of the rod when the controlling cap is moved to allow the tip to flare out.
    • 一种破碎的髓内钉去除工具,用于从其嵌入的骨中提取破碎的髓内杆的远端。 在第一实施例中,工具具有提取轴,在轴内设置并纵向移动的膨胀杆,固定到抽出轴的近端的冲击板适配器,固定到冲击板适配器的指旋螺钉和撞击板 固定在撞板适配器上。 提取轴的远端向内锥形并且具有分开的灯泡尖端,使得膨胀轴远端可以通过将膨胀轴的远端插入其中而扩张,以使其尖端接合 破碎的髓内杆的远端,从而允许通过撞击撞击板去除破碎的杆的远端部分,以迫使膨胀轴和尖端接合的断杆端部。 在第二实施例中,处于其松弛位置的分离式灯泡尖端向外扩张以接合破碎的髓内杆的远端,并且最初由控制帽向内偏转,以允许尖端在套管内向远侧移动至 当控制盖移动以允许尖端张开时,尖端可以接合杆的破碎端。