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1. 发明授权

US09095379B2 Constrained motion bone screw assembly 有权
标题翻译：约束运动骨螺钉组件
公开(公告)号：US09095379B2
公开(公告)日：2015-08-04
申请号：US13087777
申请日：2011-04-15
申请人： Nam T. Chao , Simon Siu , Ronald Sacher , Jerold P. Gurley , Randal Betz , Peter O. Newton
发明人： Nam T. Chao , Simon Siu , Ronald Sacher , Jerold P. Gurley , Randal Betz , Peter O. Newton
IPC分类号： A61B17/70
CPC分类号： A61B17/7037 , A61B17/7032 , A61B17/7038 , A61B17/704 , A61B17/7041
摘要： A bone screw assembly includes an anchor portion and a head portion, such as a rod-receiving portion, movably mounted to the anchor portion to allow for controlled angulation between the anchor portion and the head portion. The anchor portion is pivotable in one or more selected directions about an axis relative to the head portion. A restriction member, which may be a rod seat, prevents the anchor portion from pivoting in one or more different directions about another axis relative to the head portion and/or a spinal fixation element received in the head portion. The restriction member may be inserted in the head portion to control direction that the anchor portion pivots relative to the head portion. The restriction member may also serve as a compression member and/or rod seat for seating a spinal rod coupled to the bone screw assembly.
摘要翻译：骨螺钉组件包括锚固部分和头部，诸如杆接收部分，可移动地安装到锚定部分，以允许锚定部分和头部部分之间的受控角度。锚定部分可以围绕相对于头部的轴线在一个或多个选定的方向上枢转。可以是杆座的限制构件防止锚固部分在一个或多个不同方向上相对于头部部分和/或接收在头部部分中的脊柱固定元件围绕另一个轴线枢转。限制构件可以插入到头部中以控制锚固部分相对于头部枢转的方向。限制构件还可以用作用于安置联接到骨螺钉组件的脊柱杆的压缩构件和/或杆座。

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