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    • 9. 发明授权
    • Collar bore configuration for dynamic spinal stabilization assembly
    • 用于动态脊柱稳定装配的轴环配置
    • US08109975B2
    • 2012-02-07
    • US11668746
    • 2007-01-30
    • Michael S. VeldmanThomas A. CarlsJonathan M. Dewey
    • Michael S. VeldmanThomas A. CarlsJonathan M. Dewey
    • A61B17/70
    • A61B17/7008A61B17/702
    • A dynamic spinal stabilization assembly includes at least one mounting collar with a bore therethrough along a longitudinal axis, and a spinal rod slidably extending through the bore. The bore includes a medially disposed first section of reduced size that tapers both inwardly and outwardly relative to the axis, and respective end sections of relatively larger size. The bore may be defined by an interior wall that convexly curves toward the axis in the first section, advantageously with a constant non-zero radius of curvature. The bore profile helps minimize potential binding that may occur between the collar and the rod. The rod is coupled to bone anchoring elements, with at least one such connection being via the collar.
    • 动态脊柱稳定组件包括至少一个安装环,其具有沿着纵向轴线穿过其中的孔,以及可滑动地延伸穿过所述孔的脊柱杆。 孔包括中间设置的尺寸减小的第一部分,其相对于轴线向内和向外逐渐变细,以及相对较大尺寸的相应端部部分。 孔可以由在第一部分中朝向轴线凸形弯曲的内壁限定,有利地具有恒定的非零曲率半径。 孔型材有助于最小化可能在套环和杆之间发生的结合。 杆连接到骨锚定元件上,其中至少一个这样的连接经由套环。