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    • 3. 发明申请
    • POLYAXIAL BONE ANCHOR AND METHOD OF SPINAL FIXATION
    • 多轴骨锚和脊柱固定方法
    • WO2005037067A2
    • 2005-04-28
    • PCT/US2004/033683
    • 2004-10-13
    • SYNTHES (U.S.A.)SYNTHES AG CHURKEYER, Thomas, R.BERGER, RogerWALTHER, Martin
    • KEYER, Thomas, R.BERGER, RogerWALTHER, Martin
    • A61B
    • A61B17/7037A61B17/7032A61B17/7038
    • The present invention is directed to a polyaxial bone anchor for attaching a rod to a bone comprising an anchor member for attachment to the bone, a body member having a U-shaped channel for receiving the rod and a compressible recess for receiving a head of the anchor member such that the anchor member can initially polyaxially angulate with respect to the body member, a collar slidably disposed about the body member and capable of compressing the recess around the head, and a fastener capable of pressing the rod against the collar. The body member may define a first axis, an upper bounding edge, and a lower bounding edge, and the lower bounding edge may include a countersunk region to permit increased angulation of the anchor member with respect to the first axis when the anchor member is oriented toward the countersunk region. Other structures for providing increased angulation of the anchor member are disclosed as well. Further, the present invention is directed to methods of fixation of the cervical region of the spine.
    • 本发明涉及一种用于将杆附接到骨上的多轴骨锚,其包括用于附接到骨的锚固构件,本体构件,该本体构件具有用于接收杆的U形通道和 用于容纳所述锚定构件的头部的可压缩凹部,使得所述锚定构件最初可以相对于所述本体构件多轴成角度地成角度;围绕所述本体构件可滑动地设置并且能够压缩所述头部周围的所述凹部的套环; 杆对着衣领。 本体构件可以限定第一轴线,上边界边缘和下边界边界,并且下边界边缘可以包括埋头区域以允许当锚定构件被定向时锚定构件相对于第一轴线增大的角度 朝向沉没区域。 还公开了用于提供锚定构件的增加的角度的其他结构。 此外,本发明涉及固定脊柱颈部区域的方法。