COAXIALLY LOCKABLE POLY-AXIAL BONE FASTENER ASSEMBLIES
    16.
    发明申请
    COAXIALLY LOCKABLE POLY-AXIAL BONE FASTENER ASSEMBLIES 有权
    同轴可锁定的多轴骨骼紧固件组件

    公开(公告)号:US20100152785A1

    公开(公告)日:2010-06-17

    申请号:US12336404

    申请日:2008-12-16

    IPC分类号: A61B17/04

    摘要: A poly-axial bone fastener assembly having a collar and a bone fastener can be coaxially locked to prevent poly-axial movements of the collar relative to the bone fastener while permitting the collar to rotate about an axis of the bone fastener, thereby combining the functions and advantages of a poly-axial bone screw and a fixed angle bone screw. Some embodiments of a coaxial locking mechanism may include a c-clip with a locking pin, a c-clip with hooks, a split ring with square corners, a pin that spins inside the collar, pins that travel about a neck of the bone fastener, a coaxially locking top that screws into the collar over a head of the bone fastener, and a top nut that threads onto the head of the bone fastener inside the collar to trap a flange of the collar between a shoulder of the bone fastener and the top nut.

    摘要翻译: 具有轴环和骨紧固件的多轴骨头紧固件组件可以同轴锁定,以防止套环相对于骨紧固件的多轴向移动,同时允许套环围绕骨紧固件的轴线旋转,从而组合功能 和多轴骨螺钉和固定角骨螺钉的优点。 同轴锁定机构的一些实施例可以包括具有锁定销的c形夹子,具有钩的c形夹子,具有方形拐角的开口环,在套环内部旋转的销,围绕骨紧固件的颈部行进的销 ,一个同轴锁定的顶部,其在所述骨紧固件的头部上螺旋进入所述颈环;以及顶部螺母,所述顶部螺母在所述颈圈内螺纹连接到所述骨紧固件的头部上,以将所述颈环的凸缘捕获在所述骨紧固件的肩部和 顶级螺母