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    • 7. 发明申请
    • DYNAMIC ROD
    • 动态ROD
    • WO2008153747A2
    • 2008-12-18
    • PCT/US2008/006598
    • 2008-05-23
    • VERTIFLEX, INC.HAYES, Stanley, KyleREGLOS, Joey, CamiaALTARAC, MotiKIM, Daniel, H.
    • HAYES, Stanley, KyleREGLOS, Joey, CamiaALTARAC, MotiKIM, Daniel, H.
    • A61B17/70A61B17/58
    • A61B17/7005A61B17/7004A61B17/7023A61B17/7025A61B17/7026A61B17/7028
    • A dynamic rod implantable into a patient and connectable between two vertebral anchors in adjacent vertebral bodies is provided. The dynamic rod fixes the adjacent vertebral bodies together in a dynamic fashion providing immediate postoperative stability and support of the spine. The dynamic rod comprises a first rod portion having a first engaging portion and a second rod portion having a second engaging portion. The first and second rod portions are connected to each other at the first and second engaging portions. The dynamic rod further includes at least one bias element configured to provide a bias force in response to deflection or translation of the first rod portion relative to the second rod portion. The dynamic rod permits relative movement of the first and second rod portions allowing the rod to carry some of the natural flexion and extension moments that the spine is subjected to.
    • 提供了植入患者体内并可在相邻椎体内的两个椎骨锚固件之间连接的动态杆。 动态杆将相邻的椎体以动态方式固定在一起,提供立即的术后稳定性和支撑脊柱。 动态杆包括具有第一接合部分的第一杆部分和具有第二接合部分的第二杆部分。 第一和第二杆部分在第一和第二接合部分处彼此连接。 动态杆还包括至少一个偏置元件,其构造成响应于第一杆部分相对于第二杆部分的偏转或平移而提供偏置力。 动态杆允许第一和第二杆部分的相对运动,允许杆承载脊柱经受的一些自然弯曲和伸展力矩。