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    • 23. 发明授权
    • Apparatus and method for cutting a surface at a repeatable angle
    • 用于以可重复的角度切割表面的装置和方法
    • US5885293A
    • 1999-03-23
    • US810649
    • 1997-03-03
    • Dennis McDevitt
    • Dennis McDevitt
    • A61B17/16A61B17/17A61B17/56
    • A61B17/1635A61B17/1637A61B17/1675A61B17/1714A61B17/1764
    • A tool for cutting surfaces at repeatable angles relative to the surface being cut is provided. In one embodiment, the tool is used for cutting a bone in a direction perpendicular to a surface of the bone. The tool includes a cylindrical bone cutter having an operable portion located at a proximal end of the cutter for cutting bone. The bone cutter has an internal surface and the internal surface defines an internal bore extending along a longitudinal axis of the cutter from a proximal end to a distal end. A probe, slidably mounted within the bore of the cutter, extends beyond the operable portion of the cutter, and is biased towards the bone surface. An indicator coupled to the probe designates the position of the probe relative to the operable portion of the cutter. When the indicator is maximally displaced away from the proximal end of the cutter, while maintaining the probe and the cutter in contact with the bone surface, the longitudinal axis of the cutter will be substantially perpendicular to the surface of the bone. At this point of maximum displacement, force may be applied to the cutter to make a cut into the bone that is orthogonal to the bone surface. Methods for using the tool are also provided.
    • 提供了一种用于相对于被切割的表面以可重复的角度切割表面的工具。 在一个实施例中,该工具用于在垂直于骨表面的方向上切割骨骼。 该工具包括圆柱形骨切割器,其具有位于切割器的近端的用于切割骨的可操作部分。 骨切割器具有内表面,并且内表面限定从切割器的纵向轴线从近端延伸到远端的内孔。 可滑动地安装在切割器的孔内的探针延伸超过切割器的可操作部分,并被朝向骨表面偏置。 耦合到探针的指示器指示探针相对于切割器的可操作部分的位置。 当指示器最大程度地离开切割器的近端时,同时保持探针和切割器与骨表面接触,切割器的纵向轴线将基本上垂直于骨的表面。 在最大位移的这一点上,力可以施加到切割器上以对与骨表面正交的骨进行切割。 还提供了使用该工具的方法。