Dual pivot instrument for reduction of a fixation element and method of use

摘要

A spinal fixation element fixation reduction system is provided herein. In general, the system can include a cap element with a bore having a central axis extending therethrough wherein the cap element is configured to releasably engage any type of surgical device (e.g., an access sleeve, a vertebral body rotator, etc.). Further, the system can include a driver configured to be slidably and removably positioned through the cap element. The system can also include an actuator configured to apply a force to the driver substantially along the central axis of the cap element thereby moving the driver in a distal direction so as to effect reduction of a spinal fixation element into a bone anchor. Additionally, a method of reducing a spinal fixation element into a bone anchor is also provided wherein the method can be performed as a minimally invasive surgical procedure or as an open procedure.

主权项

1. A method for reducing a spinal fixation element into a bone anchor, comprising:
attaching a drive mechanism to a surgical sleeve, the drive mechanism having an actuator, a support pivotally coupled to the actuator at a first pivot, a cap element, and a second pivot disposed between the support and the cap element at a location separate from the first pivot such that the cap element is pivotally connected to the support and the surgical sleeve is attached to the cap element; rotating the cap element with respect to the support; removably coupling a driver to the drive mechanism such that the driver extends into the surgical sleeve; and actuating the drive mechanism to apply a force to the driver causing the driver to contact a spinal fixation element and to slide linearly and along a central axis in a distal direction of the surgical sleeve thereby reducing the spinal fixation element into a bone anchor.