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发明公开
CN102695465A 结合具有可偏转柱和复合脊柱杆的骨锚固件的小轮廓脊柱假体 无效 - 撤回

结合具有可偏转柱和复合脊柱杆的骨锚固件的小轮廓脊柱假体
摘要：
本发明涉及一种骨锚固件，所述骨锚固件包括适用于脊柱稳定假体的自定中心球窝接头，所述脊柱稳定假体在保留脊柱运动功能的同时支承所述脊柱。所述骨锚固件具有部分地接收于形成在所述骨锚固件的头部中的外壳的套节中的可偏转球-杆。部分地接收于所述球-杆中并且部分地接收于所述外壳内的定中心杆操作以将所述球-杆与所述骨锚固件的所述纵向轴线对齐。所述球-杆的偏转弯曲所述定中心杆，所述定中心杆接着施加恢复力至所述球-杆上。
摘要（英）：

A bone anchor comprising a self-centering ball-joint suitable for use in a spine stabilization prosthesis which supports the spine while providing for the preservation of spinal motion. The bone anchor has a deflectable ball-rod partially received in a socket of a housing formed in the head of the bone anchor. A centering rod received partially in the ball-rod and partially within the housing operates to align the ball-rod with the longitudinal axis of the bone anchor. Deflection of the ball-rod bends the centering rod which in turn applies a restoring force upon the ball-rod.

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