US 7,588,593 B2
Pedicle screw with vertical adjustment
Joseph Aferzon, Avon, Conn. (US)
Assigned to International Spinal Innovations, LLC, West Hartford, Conn. (US)
Filed on Apr. 18, 2006, as Appl. No. 11/406,134.
Prior Publication US 2007/0244482 A1, Oct. 18, 2007
Int. Cl. A61B 17/70 (2006.01)
U.S. Cl. 606—265  [606/267] 15 Claims
OG exemplary drawing
 
1. An assembly to secure a spinal segment including a plurality of vertebrae, the assembly comprising:
at least one stabilizing rod;
a plurality of vertebral anchors, each vertebral anchor having a first end to engage a vertebra and a connecting head end; and
a plurality of connectors to secure the plurality of vertebral anchors to the at least one stabilizing rod, each connector comprising:
an anchor clamp including a plurality of receptacles to receive the connecting head end of a vertebral anchor and to provide angular deflection and rotation of the anchor clamp with respect to the vertebral anchor;
a compression spacer including a top, a tube and a tapered end, the tapered end to receive at least a portion of the anchor clamp within the tube, the tube to provide vertical travel and rotation of the anchor clamp with respect to the tube; and
a rod receiver to house the compression spacer, the rod receiver including a first end having a transverse channel to receive the at least one stabilizing rod in the channel, the channel having threaded walls to receive a tightening nut, the rod receiver including a second end having a taper to receive the portion of the anchor clamp within the compression spacer.