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    • 3. 发明授权
    • Spinal fixation system
    • 脊柱固定系统
    • US09393049B2
    • 2016-07-19
    • US13595533
    • 2012-08-27
    • Scott JonesOheneba Boachie-AdjeiLarry McClintockKevin StraussJohn Carbone
    • Scott JonesOheneba Boachie-AdjeiLarry McClintockKevin StraussJohn Carbone
    • A61B17/70A61B17/86A61B17/00
    • A61B17/7037A61B17/7086A61B17/8625A61B2017/0046
    • A polyaxial pedicle screw includes a housing, a bone screw member, and an anvil. The bone screw member includes a head and a threaded shaft extending from the head. The head is selectively securable within the housing. The anvil is positionable within the housing adjacent to the head of the bone screw member when the anvil and the head of the bone screw member are positioned within the housing. The anvil may define one or more grooves in an outer surface of the anvil. The groove defines a flap that is flexibly attached to the anvil to enable the anvil to flex an amount sufficient to maintain the head of the bone screw in constant contact with the anvil when the bone screw member is moved relative to the anvil. A rod reducer may be secured to the polyaxial pedicle screw to secure a spinal rod within the housing.
    • 多轴椎弓根螺钉包括壳体,骨螺钉构件和砧座。 骨螺钉构件包括头部和从头部延伸的螺纹轴。 头部可选择性地固定在壳体内。 当砧座和骨螺钉构件的头部位于壳体内时,砧座可定位在邻近骨螺钉构件的头部的壳体内。 砧座可以在砧座的外表面中限定一个或多个凹槽。 凹槽限定了一个翼片,其柔性地连接到砧座,以使得当砧座螺钉构件相对于砧座移动时,砧座能够弯曲足以保持骨螺钉的头部与砧座保持不间断的量。 杆减速器可以固定到多轴椎弓根螺钉上,以将脊柱杆固定在壳体内。