Spine stabilization system

摘要

A spinal stabilization system includes a connecting rod, a rod bending device, and a plurality of bone screws. The connecting rod includes an elongate round portion, an elongate head portion and a neck portion connecting the elongate round portion with the elongate head portion. The rod bending device includes an elongate body defining an aperture configured and dimensioned to receive the connecting rod therethrough in a single orientation. The bone screws include a housing portion and a screw shaft distally extending from the housing portion. The housing portion includes an inner housing and an outer housing slidably surrounding at least a portion of the inner housing. The inner housing defines a slot configured and dimensioned to releasably secure the elongate round portion of the connecting rod therein. The outer housing is movable relative to the inner housing between an unlocked state and a locked state.

主权项

1. A spinal stabilization system comprising:
a connecting rod including an elongate round portion, an elongate head portion including a planar surface, and a neck portion connecting the elongate round portion with the elongate head portion; and a bone screw including a housing portion and a screw shaft extending distally from the housing portion, the housing portion including an inner housing and an outer housing slidably surrounding at least a portion of the inner housing, the inner housing defining a slot configured and dimensioned to releasably secure the elongate round portion of the connecting rod therein, wherein the outer housing is movable relative to the inner housing between an unlocked state in which the elongate round portion of the connecting rod is releasable from the slot defined in the inner housing and a locked state in which the connecting rod is secured in the slot, wherein a cross-section of the connecting rod is asymmetric about an axis of the connecting rod, and the elongate head portion extends away from the inner housing when the elongate round portion is disposed in the slot of the inner housing.