INTERBODY DISTRACTOR

摘要

An interbody distractor and geometry trial instrument to measure a height and an angle for an associated implant includes a height handle and an expansion head coupled to the height handle that is adapted to be positioned in a vertebral body. A wedge sleeve is coupled to the expansion head, to control an angle of a first surface plate and a second surface plate of the expansion head when the wedge sleeve interacts with the expansion head. A wedge sleeve knob is adapted to drive the wedge sleeve linearly towards the vertebral body when the wedge sleeve knob is actuated. A height of the expansion head and an angle of the first and the second surface plate are measured to determine the height and the angle of the associated implant when the height handle and the wedge sleeve knob are actuated.

主权项

1. An interbody distractor and geometry trial instrument to measure a height and an angle for an associated implant comprising:
a height handle; an expansion head coupled to said height handle, wherein said expansion head comprises a first surface plate and a second surface plate, and wherein said expansion head is adapted to be positioned in a vertebral body; a wedge sleeve coupled to said expansion head, wherein said wedge sleeve controls an angle of said first surface plate and said second surface plate when said wedge sleeve interacts with said expansion head; a wedge sleeve knob positioned between said height handle and said wedge sleeve, wherein said wedge sleeve knob is adapted to drive said wedge sleeve linearly towards said vertebral body when said wedge sleeve knob is actuated, and wherein a height of said expansion head and an angle of said first surface plate and said second surface plate are measured to determine said height and said angle of said associated implant when said height handle and said wedge sleeve knob are actuated.