Patent ID: 8357182
Filing Date: 2013-01-22
Classification: A61B

Abstract:
1. A system for correcting a spinal deformity of a spinal column, the system comprising: a rod configured to extend along a spine of a patient; a first rod anchor configured to be fixed to a first vertebra of the spine, the first rod anchor being configured to receive the rod such that the rod is able to slide axially through the first rod anchor and is secured against substantial lateral translation relative to the first rod anchor and the rod is able to change at least two of pitch, yaw, and roll at the first rod anchor; a second rod anchor configured to be fixed to a second vertebra, the second rod anchor being configured to receive the rod such that the rod is able to slide axially through the second rod anchor and is secured against substantial lateral translation relative to the second rod anchor and the rod is able to change in at least pitch and yaw at the second rod anchor; a first stop feature configured to limit axial sliding of the rod by abutting the first rod anchor, the first stop feature located adjacent the first rod anchor at a first fixed position along the rod; a second stop feature configured to limit axial sliding of the rod by abutting the second rod anchor, the second stop feature located adjacent the second rod anchor at a second fixed position along the rod such that when the first and second rod anchors abut the first and second stop features the rod resists compressive load; and a third stop feature configured to limit axial sliding of the rod by abutting the second rod anchor, the third stop feature located adjacent the second rod anchor at a third fixed position along the rod, such that the second and third stop features are positioned opposite each other relative to the second rod anchor and the second rod anchor is able to slide axially on the rod between the second and third stop features.