Instrument and method for spinal compression and distraction

摘要

An instrument for multilevel compression and distraction of vertebrae in a spinal column includes a first arm, a second arm, a third arm, a linking member, and a coupler. The first arm includes a distal end with a first aperture for receiving a first screw extender that attaches to a first vertebra. The second arm includes a distal end with a second aperture for receiving a second screw extender that attaches to a second vertebra. The third arm includes a distal end with a third aperture for receiving a third screw extender that attaches to a third vertebra. The linking member pivotally links proximal ends of the first, second, and third arms. The coupler positions the distal ends of the first arm and the second arm relative to the third arm to compress and distract the first vertebra and the second vertebra relative to the third vertebra.

主权项

1. An instrument for compression and distraction of vertebrae in a spinal column, comprising:
a first arm including a distal end that receives a first screw extender that attaches to a first vertebra; a second arm including a distal end that receives a second screw extender that attaches to a second vertebra; a third arm including a distal end that receives a third screw extender that attaches to a third vertebra; a linking member that pivotally links proximal ends of the first, second, and third arms; and an actuator that positions the distal ends of the first arm and the second arm relative to the third arm to compress and distract the first vertebra and the second vertebra relative to the third vertebra, wherein rotating the actuator in a first direction positions the first arm and the second arm away from the third arm and rotating the actuator in a second direction positions the first arm and the second arm towards the third arm.