Invention Grant
US09439699B2 Percutaneous access devices and bone anchor assemblies 有权
经皮进入装置和骨锚组件

Percutaneous access devices and bone anchor assemblies
Abstract:
A bone anchor assembly includes a bone anchor having a distal bone engaging portion and a receiving member having a recess for receiving a spinal fixation element. The proximal end of the receiving member may have a groove formed on an exterior surface thereof to facilitate connection of an instrument to the receiving member.
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