Posterior laminectomy procedure
OwnerHamid M. Mehdizadehinventor
Life of this patent
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Abstract
A process is described for insertion of a prosthesis within an intradiscal space during a posterior laminectomy. The process insures proper orientation and alignment of prostheses inserted in the intradiscal space. The process also involves minimal removal of bone from the facet joint, which assures retention of the major portion of a patient's spinal column weight bearing capability.
Claims7
A posterior approach laminectomy procedure for placing a prosthesis within the intradiscal space between adjacent vertebrae, comprising the steps of
- retracting the nerve root and dural,
- inserting a disc space spreader within the intradiscal space,
- recording the direction of the disc space spreader insertion,
- inserting a single tang retractor within the intradiscal space in a direction substantially parallel to the disc space spreader recorded direction,
- forming surfaces on the adjacent vertebrae to receive the prosthesis, and
- positioning the prosthesis in contact with the formed surfaces using the single tang retractor as a guide.
A posterior approach laminectomy procedure for placing a prosthesis into the space between adjacent vertebrae, comprising the steps of
- retracting the dural to an out of the way position,
- spreading the adjacent vertebrae,
- inserting a single tang retractor into the space between adjacent vertebrae,
- recording the single tang retractor direction of insertion,
- forming opposing surfaces on the adjacent vertebrae to receive the prosthesis using the single tang retractor as a guide, and
- positioning the prosthesis between the opposing surfaces along the single tang insertion direction.
A posterior approach laminectomy procedure for placing a split prosthesis having a first half and a second half within the intradiscal space between adjacent vertebrae in positions on one side and an opposite side respectively of the spinal column center line, comprising the steps of
- retracting the nerve root and dural,
- inserting a disc space spreader within the intradiscal space on the one side,
- recording the direction of the disc space spreader insertion,
- inserting a single tang retractor within the intradiscal space on the opposite side in a direction substantially parallel to the disc space spreader recorded direction,
- forming surfaces on the adjacent vertebrae on the opposite side to receive the prosthesis second half,
- positioning the prosthesis second half in contact with the formed surfaces on the opposite side using the single tang retractor as a guide,
- removing the single tang retractor from the opposite side and the disc space spreader from the one side,
- inserting the single tang retractor within the intradiscal space on the one side in the position vacated by the disc space spreader and substantially parallel with the disc space spreader recorded direction,
- forming surfaces on the adjacent vertebrae on the one side to receive the prosthesis first half,
- positioning the prosthesis first half in contact with the formed surfaces on the one side using the single tang retractor as a guide, and
- removing the single tang retractor from the one side.
Dependencies are inferred from the claim text.