Articulating facet fusion screw
First Claim
Patent Images
1. A spinal implant, comprising:
- an elongate member extending along a longitudinal axis and having threads extending over at least a portion of the outer surface thereof; and
a stabilization feature having threads extending over at least a portion of an outer surface thereof, the stabilization feature including an articulating member pivotably coupled to a proximal portion of the elongate member by a pivot that allows the stabilization feature to be selectively configurable between a delivery configuration and a deployed configuration in which the stabilization feature is oriented and fixed at an angle with respect to the longitudinal axis of the elongate member,wherein the articulating member includes motion resisting plates extending over at least a portion of an exterior surface thereof and configured to provide frictional opposition to motion in the deployed configuration.
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Accused Products
Abstract
A spinal implant is provided having an elongate member with a longitudinal axis and threads extending over at least a portion of the outer surface thereof. The implant includes a stabilization feature associated with the elongate member that is selectively configurable between a delivery configuration and a deployed configuration in which the stabilization feature is oriented at an angle with respect to the longitudinal axis of the elongate member. Also, at least a portion of the implant can include a fusion-promoting bioactive material. In another aspect, the invention includes methods for providing stabilization within a facet joint by delivery of an articulating intra-facet screw.
365 Citations
20 Claims
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1. A spinal implant, comprising:
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an elongate member extending along a longitudinal axis and having threads extending over at least a portion of the outer surface thereof; and a stabilization feature having threads extending over at least a portion of an outer surface thereof, the stabilization feature including an articulating member pivotably coupled to a proximal portion of the elongate member by a pivot that allows the stabilization feature to be selectively configurable between a delivery configuration and a deployed configuration in which the stabilization feature is oriented and fixed at an angle with respect to the longitudinal axis of the elongate member, wherein the articulating member includes motion resisting plates extending over at least a portion of an exterior surface thereof and configured to provide frictional opposition to motion in the deployed configuration. - View Dependent Claims (2, 3)
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4. A method for facet joint fixation and fusion, comprising:
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surgically delivering at least one implant to a facet joint in an intrafacet orientation in which the implant is aligned along a central longitudinal axis, the implant having a distal portion with a conical distal tip and a proximal portion that includes at least one selectively deployable stabilization feature; and deploying the stabilization feature such that it extends from the implant to engage a bony surface of the facet joint to oppose the natural motion of the facet joint, a longitudinal axis of at least a portion of the proximal portion being disposed at an angle relative to the central longitudinal axis of the distal portion after deployment of the stabilization feature. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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13. A spinal implant, comprising:
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an elongate member extending along a longitudinal axis and having threads extending over at least a portion of the outer surface thereof; and a stabilization feature having threads extending over at least a portion of an outer surface thereof, the stabilization feature coupled to the elongate member by a pivot that allows the stabilization feature to be selectively configurable between a delivery configuration and a deployed configuration in which the stabilization feature is oriented and fixed at an angle with respect to the longitudinal axis of the elongate member, wherein the stabilization feature comprises at least one prong which is substantially recessed within the elongate member in the delivery configuration. - View Dependent Claims (14, 15)
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16. A spinal implant, comprising:
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an elongate member extending along a longitudinal axis and having threads extending over at least a portion of the outer surface thereof; and a stabilization feature having threads extending over at least a portion of an outer surface thereof, the stabilization feature coupled to the elongate member by a pivot that allows the stabilization feature to be selectively configurable between a delivery configuration and a deployed configuration in which the stabilization feature is oriented and fixed at an angle with respect to the longitudinal axis of the elongate member, wherein the stabilization feature is an expanding sleeve that is positioned over at least a portion of an outer surface of the elongate member, the sleeve having proximal and distal ends, and at least one hinged arm located between the proximal and distal ends. - View Dependent Claims (17, 18, 19)
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20. A spinal implant, comprising:
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an elongate member extending along a longitudinal axis and having threads extending over at least a portion of the outer surface thereof; and a stabilization feature having threads extending over at least a portion of an outer surface thereof, the stabilization feature coupled to the elongate member by a pivot that allows the stabilization feature to be selectively configurable between a delivery configuration and a deployed configuration in which the stabilization feature is oriented and fixed at an angle with respect to the longitudinal axis of the elongate member, wherein the stabilization feature comprises two distinct articulating members pivotably connected to a proximal portion of the elongate member and which are capable of rotating relative to one another in the deployed configuration.
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Specification