Apparatus and method for direct vertebral rotation

摘要

An instrument for spinal rotation that aligns and holds direct vertebral rotation (DVR) lever arms relative to each other to achieve an initial axial alignment of a segment of vertebrae and allows the final DVR rotation by rotating the instrument and lever arms together. A method of direct vertebral rotation that allows rotating the vertebrae to be aligned relative to each other, and collectively rotating the vertebrae to be aligned relative to adjacent spinal segments by rotating the direct vertebral rotation instrument. A system for direct vertebral rotation having at least two pedicle screws. The system also includes at least two levers attachable to the pedicle screws and a clamping instrument configured to clamp the levers.

主权项

1. A system for direct vertebral rotation comprising:
at least two levers, each of the levers being attachable to a pedicle screw implanted in a vertebra of a spine such that each lever extends proximally from the respective pedicle screw; and a clamping instrument configured to clamp the levers, the clamping instrument including a first jaw and a second jaw, each of the first and second jaws including an inner portion facing towards the other of the first and second jaws, the inner portion of each of the first and second jaws including a compliant material, wherein the first and second jaws are movable relative to one another to a closed position in which a plurality of the levers are receivable and alignable between the first and second jaws, and wherein the compliant material of the first and second jaws is configured to conform to at least a portion of the levers received between the first and second jaws when the first and second jaws are in the closed position.