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    • 31. 发明申请
    • DYNAMIC ROD
    • 动态ROD
    • WO2009042489A3
    • 2009-05-22
    • PCT/US2008076815
    • 2008-09-18
    • VERTIFLEX INCALTARAC MOTIREGLOS JOEY CAMIAHAYES STANLEY KYLEKIM DANIEL H
    • ALTARAC MOTIREGLOS JOEY CAMIAHAYES STANLEY KYLEKIM DANIEL H
    • A61B17/70A61B17/58
    • A61B17/7023A61B17/6491A61B17/7005A61B17/7025A61B17/7028A61B17/7031
    • A dynamic rod implantable into a patient and connectable between two vertebral anchors in adjacent vertebral bodies is provided. The rod fixes the adjacent vertebral bodies dynamically providing immediate postoperative stability and support of the spine. The rod comprises a first rod portion having a first engaging portion connected to a second rod portion having a second engaging portion. The rod includes at least a one bias element configured to bias a deflection or translation of the first rod portion relative to the second rod portion. The first engaging portion includes at least one side or integral spring formed in the first engaging portion to bias a deflection of the second rod portion relative to the first rod portion. The 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 subject 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。 该杆固定相邻的椎体,动态地提供立即的术后稳定性和支撑脊柱。 杆包括第一杆部分,其具有连接到具有第二接合部分的第二杆部分的第一接合部分。 所述杆包括至少一个偏置元件,所述至少一个偏置元件构造成偏置所述第一杆部分相对于所述第二杆部分的偏转或平移。 第一接合部分包括形成在第一接合部分中的至少一个侧面或整体弹簧,以偏压第二杆部分相对于第一杆部分的偏转。 杆允许第一和第二杆部分的相对运动允许杆承载脊柱所受到的一些自然弯曲和延伸力矩。