Inter-cervical facet joint implant with locking screw system
First Claim
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1. A facet joint implant adapted that address ailments of the spine, the implant including:
- a facet joint spacer that is adapted to be inserted in a facet joint;
an anchoring plate that is adapted to be secured to a vertebra;
a bone screw that is disposed through the anchoring plate and is adapted to secure the anchoring plate to the vertebra;
a locking screw that holds the bone screw in place in the anchoring plate;
wherein said locking screw has a first position that locks the bone screw in the anchoring plate and a second position that allows the bone screw to be removed from the anchoring plate.
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Abstract
Systems and method in accordance with the embodiments of the present invention can include an implant for positioning within a cervical facet joint for distracting the cervical spine, thereby increasing the area of the canals and openings through which the spinal cord and nerves must pass, and decreasing pressure on the spinal cord and/or nerve roots. The implant can be inserted laterally or posteriorly.
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Citations
22 Claims
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1. A facet joint implant adapted that address ailments of the spine, the implant including:
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a facet joint spacer that is adapted to be inserted in a facet joint;
an anchoring plate that is adapted to be secured to a vertebra;
a bone screw that is disposed through the anchoring plate and is adapted to secure the anchoring plate to the vertebra;
a locking screw that holds the bone screw in place in the anchoring plate;
wherein said locking screw has a first position that locks the bone screw in the anchoring plate and a second position that allows the bone screw to be removed from the anchoring plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21)
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11. A facet joint implant that addresses ailments of the spine, the implant comprising:
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a first anchoring plate that is adapted to be fixedly associated with a first vertebra;
a second anchoring plate that is adapted to be fixedly associated with a second vertebra;
a facet joint spacer connected with the first anchoring plate and the second anchoring plate, the facet joint spacer adapted to be positioned in a facet joint;
with the facet joint spacer pivotable relative to at least one of the first anchoring plate and the second anchoring plate; and
a first bone screw that is disposed through the first anchoring plate and is adapted to secure the first anchoring plate to the first vertebra;
a second bone screw that is disposed through the second anchoring plate and is adapted to secure the second anchoring plate to the second vertebra;
a locking screw that holds the first bone screw in place in the first anchoring plate;
wherein said locking screw has a first position that locks the first bone screw in the first anchoring plate and a second - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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22. A facet joint implant adapted that address ailments of the spine, the implant including:
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a facet joint spacer that is adapted to be inserted in a facet joint;
an anchoring plate that is adapted to be secured to a vertebra;
wherein said facet joint spacer is pivotally connected with the anchoring plate;
a bone screw that is disposed through the anchoring plate and is adapted to secure the anchoring plate to the vertebra;
a locking screw that holds the bone screw in place in the anchoring plate;
wherein said locking screw has a first position that locks the bone screw in the anchoring plate and a second position that allows the bone screw to be removed from the anchoring plate.
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Specification