Importance

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Abstract

A driver for delivering an insert to a bone anchor, the bone anchor having an internal cavity with a set of internal threads, the driver adapted to rotate with respect to a bone anchor that is anchored in a vertebral body in order to engage external threads on the insert with the set of internal threads in the bone anchor and axially advance the threadedly engaged insert within the bone anchor while simultaneously preventing the bone anchor from rotating with respect to the vertebral body the driver having: 1) a threaded retention rod for engaging a bore in the insert; 2) a driver head to engage with the insert to apply torque to the insert and rotate the insert; and 3) an anchor stabilizer to engage with a proximal face of the bone anchor to prevent the bone anchor from rotating with respect to the vertebral body.

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First Claim