Patent ID: 8506574
Filing Date: 2013-08-13
Classification: A61B

Abstract:
1. A system for displacing vertebral bodies, comprising: a first shaft having a first end and a second end, the first end of the first shaft being adapted to connect to a first pedicle screw mounted to a first vertebra of a spine, wherein the first shaft has an engagement portion located between the first and second ends of the first shaft, the engagement portion of the first shaft being adapted to engage a first arm of a displacement device so as to form a first polyaxial pivot between the first shaft and the first arm; and a second shaft having a first end and a second end, the first end of the second shaft being adapted to connect to a second pedicle screw mounted to a second vertebra of the spine, wherein the second shaft has an engagement portion located between the first and second ends of the second shaft, the engagement portion of the second shaft being adapted to engage a second arm of the displacement device so as to form a second polyaxial pivot between the second shaft and the second arm; wherein each of the first and second polyaxial pivots permit the respective first and second shafts to pivot with respect to the respective first and second arms of the displacement device about a plurality of intersecting axes while the first and second arms of the displacement device are imparting forces to the respective first and second shafts for displacing the first and second vertebrae with respect to one another.