System and method for correction of spine deformation
AssigneeProvidence Medical Technology, Inc.
InventorsBruce M. McCormack, Shigeru Tanaka
Life of this patent
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Abstract
An example system includes an anterior cervical discectomy and fusion (ACDF) implant that has a curved inferior surface that allows the vertebral body to rotate at the correct instantaneous center of rotation. An example system may include a one or more surgical instruments to access the cervical facet joint and perform either an osteotomy (partial removal of bone) or a facetectomy (total removal of the facet joint) in order to provide space to move the spinal column and correct kyphotic deformity.
Claims15
An anterior cervical discectomy and fusion (ACDF) implant comprising:
- a proximal end portion and a distal end portion;
- and
- a first surface opposite a second surface, the first surface including one or more teeth or ridges and the second surface being arcuate, curved or dome shaped, each of the first and second surfaces extending between the proximal and distal end portions,
- wherein the shape of the second surface allows a vertebral body to rotate at a correct center of rotation.
A system for correction of spine deformation comprising an ACDF implant, the implant comprising
- a proximal end portion and a distal end portion;
- and
- a first surface opposite a second surface, the first surface including one or more teeth or ridges and the second surface being arcuate, curved or dome shaped, each of the first and second surfaces extending between the proximal and distal end portions,
- wherein the shape of the second surface allows a vertebral body to rotate at a correct center of rotation.
A method for correction of spine deformation comprising:
- advancing an ACDF implant of into a disc space between an upper and lower vertebrae, the space created in an ACDF procedure, where the ACDF implant comprises:
- a proximal end portion and a distal end portion;
- and
- a first surface opposite a second surface, the first surface including one or more teeth or ridges and the second surface being arcuate, curved or dome shaped, each of the first and second surfaces extending between the proximal and distal end portions,
- wherein the shape of the second surface allows a vertebral body to rotate at a correct center of rotation;
- and
- fixing the implant to the upper vertebrae thereby allowing the implant to slide or rotate in a controlled manner on a surface of the lower vertebrae following the segment's instantaneous center of rotation during a subsequent posterior reduction osteotomy.
Dependencies are inferred from the claim text.