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    • 23. 发明申请
    • LOCKING CAP ASSEMBLY FOR SPINAL FIXATION INSTRUMENTATION
    • 用于脊柱固定仪的锁紧帽组件
    • US20060235393A1
    • 2006-10-19
    • US11421921
    • 2006-06-02
    • Frank BonoGeorge RossChristopher SicvolIan Burgess
    • Frank BonoGeorge RossChristopher SicvolIan Burgess
    • A61F2/30
    • A61B17/7035A61B17/7032A61B17/7037A61B17/7041A61B17/7044Y10S606/907
    • An assembly such as an anchor screw, bone plate, offset hook, post, transverse connector or other spinal anchor for anchoring to bone and clamping a linkage such as a rod, wire cable or the like. The assembly has a top member with an open slot to receive the linkage, and a twist-lock closure cap to close the open end, capturing the linkage in the slot. One closure cap fits over and around the top member, with a set of segmented protrusions that extend through a corresponding set of protruding flange segments spaced about the circumference of the top member. The cap is configured to rotate and lock against the top member like a flange-locking bayonet mount when turned through a limited degree of rotation. Slots may be provided through the face of the closure cap allowing reduction tabs to project through the cap, and the locking cap may be adapted to a range of screw, eye, hook, post, connector and other anchor assemblies to securely clamp the linkage by use of a rotation tool disposed along an access path aligned with the axis of the screw, thus requiring no lateral clearance along the longitudinal direction of the linkage element. Locking is effected by a set screw that passes through the cap and tightens against the linkage to firmly immobilize it in the anchor assembly. Another cap embodiment fits into the center of the head with a partial twist locking motion. Opposed locking surfaces prevent slippage in the radial direction, and a sloping contact floor surface may apply torque to further increase pressure on urge mating detent features in an adjacent wall.
    • 诸如锚定螺钉,骨板,偏移钩,柱,横向连接器或其他脊椎锚固件的组件,用于锚固到骨头上并夹紧诸如杆,线缆等的连杆。 组件具有顶部构件,其具有敞开的狭槽以接收连杆,以及用于封闭开口端的扭锁闭合盖,捕获槽中的连杆。 一个封闭帽适合顶部构件上方并且围绕顶部构件,其中一组分段突起延伸穿过围绕顶部构件的圆周间隔开的相应的一组突出的凸缘段。 盖子被配置为在通过有限的旋转转动时旋转并锁定抵靠顶部构件,如法兰锁定卡口安装座。 狭槽可以通过封闭盖的表面设置,允许缩小凸片突出穿过盖子,并且锁定帽可以适用于一系列螺丝,眼睛,钩子,柱子,连接器和其他锚固组件,以通过 使用沿着与螺钉的轴线对准的进入路径设置的旋转工具,因此不需要沿着连接元件的纵向方向的侧向间隙。 锁定通过固定螺钉进行,该固定螺钉穿过盖子并且紧固连接件,以将其牢固地固定在锚固组件中。 另一个帽子实施例以部分扭转锁定运动装配在头部的中心。 相对的锁定表面防止径向滑动,并且倾斜的接触地板表面可以施加扭矩以进一步增加相邻壁中的冲压配合制动特征的压力。