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    • 9. 发明申请
    • SYSTEM AND METHOD FOR POLYAXIALLY ADJUSTABLE BONE ANCHORAGE
    • 多轴可调节骨锚固系统和方法
    • WO2008157284A1
    • 2008-12-24
    • PCT/US2008/066825
    • 2008-06-13
    • ROBERT REID, INCBUTTERS, Joshua, A.MARIETTA, Joseph, Q.
    • BUTTERS, Joshua, A.MARIETTA, Joseph, Q.
    • A61B17/86
    • A61B17/7037A61B17/7032A61B17/8605A61B17/8685Y10T29/49826
    • An implantable bone anchor assembly for fixing an elongated member such as a spinal rod may include a bone anchor, a coupling head configured to receive the bone anchor and the elongated member, and a locking mechanism. The locking mechanism may provide compressive force to simultaneously fix the position of the elongated member and lock out polyaxial rotation of the bone anchor relative to the coupling head. The locking mechanism may include an engagement member with an oblique surface configured to slide along an oblique surface of the coupling head into engagement with the elongated member. The bone anchor may comprise a head portion and a threaded portion which may be coupled with the coupling head and joined together during manufacture. The assembly may further include a pin and/or a collar to retain the bone anchor. The bone anchor may be side-loaded into the coupling head.
    • 用于固定诸如脊椎杆的细长构件的可植入骨锚固组件可以包括骨锚固件,构造成接收骨锚和细长构件的联接头以及锁定机构。 锁定机构可以提供压缩力以同时固定细长构件的位置并且锁定骨锚固件相对于联接头的多轴旋转。 锁定机构可以包括具有倾斜表面的接合构件,该倾斜表面被构造成沿着联接头的倾斜表面滑动以与细长构件接合。 骨锚可以包括头部和螺纹部分,螺纹部分可以与联接头联接并且在制造期间连接在一起。 组件还可以包括用于保持骨锚的销和/或套环。 骨锚可以侧向加载到联接头中。