APPARATUS AND METHOD OF SPINAL IMPLANT AND FUSION
First Claim
1. A method of spine fusion comprising:
- preparing a facet joint to receive an implantation device;
inserting a tool into the facet joint, said tool consisting essentially of a handle, a head associated with said handle, said head adapted to grasp a bioactive material, said tool having a forked end and a flexible distal shaft, said forked end having at least two tines at predetermined angles;
providing bioactive material in a predetermined amount, said bioactive material fitted onto said forked end, and placing the bioactive material into the facet joint using the tool;
creating at least one hole through the bone adjacent the joint;
inserting at least one fixation device through the at least one hole; and
wherein the steps of providing bioactive material and inserting at least one fixation device occur in near simultaneous fashion.
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Accused Products
Abstract
An apparatus and method of performing a minimally invasive posterior spine fusion. More specifically an apparatus with a handle and a forked head on the distal end of the handle is used to grasp implant material and introduce the material to an implant site. The shaft of the apparatus is shaped so as to allow the affixation of a drill guide and drill while simultaneously holding the implant material in the implant site. After removal of the boring tools and assembly of the fusing element, the apparatus can be selectively removed from the implant site. A method of achieving facet joint fusion with near simultaneous fixation is also disclosed.
179 Citations
25 Claims
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1. A method of spine fusion comprising:
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preparing a facet joint to receive an implantation device; inserting a tool into the facet joint, said tool consisting essentially of a handle, a head associated with said handle, said head adapted to grasp a bioactive material, said tool having a forked end and a flexible distal shaft, said forked end having at least two tines at predetermined angles; providing bioactive material in a predetermined amount, said bioactive material fitted onto said forked end, and placing the bioactive material into the facet joint using the tool; creating at least one hole through the bone adjacent the joint; inserting at least one fixation device through the at least one hole; and wherein the steps of providing bioactive material and inserting at least one fixation device occur in near simultaneous fashion. - View Dependent Claims (2, 3)
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4. An apparatus for providing fixation of adjacent vertebral bodies comprising:
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a handle; an elongated shaft; a head coupled to the elongated shaft; wherein the head further comprises one or more tines for grasping, for example, an implantable material which is adapted to be inserted into the joint space between two or more intervertebral bodies. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of fusing one or more vertebral bodies comprising the steps of:
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Accessing the surgical site by inserting a first probing device followed by increasingly larger cannulae to expand the region in which to operate; Using curettes and rasps to prepare the surgical site and create a bleeding surface about the faces of the joint; Inserting a tool comprising a forked end and a flexible distal shaft, the forked end fitted with a bioactive membrane, through the cannulae and between the leaves of the joint; Placing at least one drill guide over the shaft of the tool and adjacent the joint; Employing a drill inserted through the at least one drill guide to create at least one hole(s) in the joint; Fastening a screw or other like device to the at least one hole(s) and adjacent the facet, thereby trapping the bioactive membrane in the joint; Removing the forked tool, the cannulae and the at least one drill guide from the patient; Wherein the foregoing steps are accomplished in a minimally invasive manner and provide near-simultaneous fixation of the vertebral bodies surrounding the joint.
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14. A screw for joining vertebrae and at least one implantable material comprising:
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a head; a generally cylindrical body with a threaded outer circumference, the body tapering from the head to a distal end of the screw; wherein an aperture is located on the head of the screw which is in communication with a hollow portion within the generally cylindrical body, which is in further communication with an aperture at the distal end of the screw; and wherein the screw is operatively associated with at least one tool for delivering a bioactive material from the tool to the hollow portion of the screw and thereafter ejected from the aperture at the distal end of the screw for the purpose of facilitating fusion of the vertebrae. - View Dependent Claims (15, 16)
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17. An anatomically correct vertebral staple for joining adjacent vertebrae comprising:
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at least two legs comprising a plurality of barbs, one of the at least two legs being longer than the other to conform to the posterior of a facet joint; and at least one attachment means for selectively attaching the staple to a bioactive material and simultaneously attaching to a insertion tool. - View Dependent Claims (18, 19, 20, 21)
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- 22. A cannula for inserting into a human patient during a minimally invasive spine surgery having an ovoid cross section for enhancing the view of the facet joint and minimizing the medial-lateral dissection about the portion of the spine accessed by the cannula.
Specification