Derotation apparatus for treating spinal irregularities
AssigneeGlobus Medical, Inc.
InventorKatherine Manninen
Life of this patent
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Abstract
Treatment of spinal irregularities, including, in one or more embodiments, derotation apparatus and systems that can be used to reduce the rotation of vertebral bodies. Derotation apparatus that may comprise a tube assembly comprising an inner sleeve and an outer sleeve disposed over the inner sleeve. The inner sleeve may have a distal end for attachment to an implant. The tube assembly may further comprise a handle assembly. The tube assembly may further comprise a ball joint assembly disposed between the tube assembly and the handle assembly. The ball joint assembly may comprise a ball joint configured for attachment to a coupling rod.
Claims16
A method for treating a spinal irregularity:
- providing a first derotation apparatus comprising a ball joint assembly having a first ball joint and a second ball joint that articulates independently of the first ball joint;
- providing a second derotation apparatus comprising a ball joint assembly;
- coupling the first derotation apparatus to a first implant coupled to a vertebral body;
- coupling the second derotation apparatus to a second implant coupled to a vertebral body;
- aligning the ball joint assembly of the first derotation apparatus and the ball joint assembly of the second derotation apparatus with one another;
- coupling a first rod between one of the first and second ball joints of the ball joint assembly of the first derotation apparatus and the ball joint assembly of the second derotation apparatus to interconnect the first derotation apparatus and the second derotation apparatus;
- and
- coupling a second rod to the other of the first and second ball joints of the ball joint assembly of the first derotation apparatus,
- wherein at least one of the first ball joint and the second ball joint of the first derotation apparatus comprises an upper portion and a lower portion that match together to form a rotatable ball, the upper portion comprising a radially extending upper tab, the lower -portion comprising a radially extending lower tab, and the upper tab and the lower tab forming a clamp for receiving the first or second rod.
A method for treating a spinal irregularity:
- providing a first derotation apparatus comprising a ball joint assembly having a first ball joint and a second ball joint that articulates independently of the first ball joint;
- providing a second derotation apparatus comprising a ball joint assembly;
- coupling the first derotation apparatus to a first implant coupled to a vertebral body;
- coupling the second derotation apparatus to a second implant coupled to a vertebral body;
- aligning the ball joint assembly of the first derotation apparatus and the ball joint assembly of the second derotation apparatus with one another;
- coupling a first rod between one of the first and second ball joints of the ball joint assembly of the first derotation apparatus and the ball joint assembly of the second derotation apparatus to interconnect the first derotation apparatus and the second derotation apparatus wherein one or both of the first and second ball joints comprises an upper portion and a lower portion that match together to form a rotatable ball, the upper portion comprising a radially extending upper tab, the lower portion comprising a radially extending lower tab, and the upper tab and the lower tab forming a clamp for receiving the first rod;
- and
- coupling a second rod to the other of the first and second ball joints of the ball joint assembly of the first derotation apparatus.
Dependencies are inferred from the claim text.