Passive screw locking mechanism
    96.
    发明授权
    Passive screw locking mechanism 有权
    无源螺丝锁定机构

    公开(公告)号:US08702762B2

    公开(公告)日:2014-04-22

    申请号:US11691760

    申请日:2007-03-27

    IPC分类号: A61B17/88 A61B17/80 A61B17/84

    摘要: Methods and devices are provided for passively locking a bone screw within a bone plate. In particular, the methods and devices allow a bone screw to be locked within a thru-hole in a bone plate without requiring any additional locking steps. In an exemplary embodiment, an annular feature is provided in a thru-hole of a bone plate, or in a bushing that is disposed within a thru-hole of a bone plate, for engaging a bone screw. The annular feature can be configured such that it allows the bone screw to be inserted through the thru-hole at various insertion angles while still being effective to prevent back-out of the bone screw, thereby locking the screw to the plate.

    摘要翻译: 提供了用于被动地将骨螺钉固定在骨板内的方法和装置。 特别地,所述方法和装置允许骨螺钉被锁定在骨板中的通孔中,而不需要任何额外的锁定步骤。 在示例性实施例中,环形特征设置在骨板的通孔中,或设置在设置在骨板的通孔内的衬套中,用于接合骨螺钉。 环形特征可以被构造成使得其允许骨螺钉以各种插入角度插入穿过通孔,同时仍然有效地防止骨螺钉的退出,从而将螺钉锁定到板上。