METHOD AND APPARATUS FOR LATERAL REDUCTION AND FUSION OF THE SPINE
First Claim
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1. A system for manipulating vertebral orientation of and stabilizing adjacent spinal vertebrae comprising:
- a fixation plate having a central aperture and a plurality of first-end fastener holes and a plurality of second-end fastener holes positioned on opposing ends of said fixation plate;
at least one fixed fastener that secures a first vertebrae through said first-end fastener holes and fixate position and rotation of said first-end of said fixation plate with respect to said first vertebrae;
an adjustable fastener that secures a second vertebrae through said second-end fastener holes to temporarily fixate position and allows rotation of said second-end of said fixation plate with respect to said second vertebrae;
a positioning tool that is keyed to interface with said aperture of said fixation plate and engages said aperture to adjust the orientation of said first vertebrae relative to said second vertebrae by transferring force from said positioning tool through said fixation plate to said first vertebrae and said second vertebrae;
a stabilizer for implantation between said first vertebrae and said second vertebrae through said aperture;
said second-end fastener holes that facilitate repositioning of said adjustable fastener to vary the distance between said fixed fastener and said adjustable fastener to compress said stabilizer between said first vertebrae and said second vertebrae and rigidly secure position and rotation of said adjustable fastener to said second vertebrae.
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Abstract
A method and device are provided for reducing abnormal vertebral orientation using a fixation plate that is used in conjunction with a positioning tool to reduce spinal deviation and properly position and secure adjacent vertebrae for fusion of the spine. The disclosed embodiments are particularly useful in minimally invasive surgical techniques such as laterally performed anterolisthesis and retrolisthesis.
22 Citations
27 Claims
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1. A system for manipulating vertebral orientation of and stabilizing adjacent spinal vertebrae comprising:
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a fixation plate having a central aperture and a plurality of first-end fastener holes and a plurality of second-end fastener holes positioned on opposing ends of said fixation plate; at least one fixed fastener that secures a first vertebrae through said first-end fastener holes and fixate position and rotation of said first-end of said fixation plate with respect to said first vertebrae; an adjustable fastener that secures a second vertebrae through said second-end fastener holes to temporarily fixate position and allows rotation of said second-end of said fixation plate with respect to said second vertebrae; a positioning tool that is keyed to interface with said aperture of said fixation plate and engages said aperture to adjust the orientation of said first vertebrae relative to said second vertebrae by transferring force from said positioning tool through said fixation plate to said first vertebrae and said second vertebrae; a stabilizer for implantation between said first vertebrae and said second vertebrae through said aperture; said second-end fastener holes that facilitate repositioning of said adjustable fastener to vary the distance between said fixed fastener and said adjustable fastener to compress said stabilizer between said first vertebrae and said second vertebrae and rigidly secure position and rotation of said adjustable fastener to said second vertebrae. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17-26. -26. (canceled)
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27. A system for manipulating vertebral orientation of and stabilizing adjacent spinal vertebrae comprising:
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means for fixing position and rotation of a first-end of a fixation plate to a first vertebrae with a fixed fastener; means for temporarily fixing position and allowing rotation of a second-end of said fixation plate to a second vertebrae with an adjustable fastener; means for adjusting orientation of said first vertebrae with respect to said second vertebrae by engaging a central aperture on said fixation plate with a positioning tool that is keyed to interface with said central aperture; means for compressing a stabilizer that is inserted between said first vertebrae and said second vertebrae through said central aperture by adjusting a distance between said second-end of said fixation plate; and
,means for fixing said distance between said first vertebrae and said second vertebrae by securing position and rotation of said second-end of said fixation plate to said second vertebrae.
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Specification