System of spinal arthodesis implants
AssigneeLDR Medical
InventorsAlexis Mercier, Samuel Lequette
Life of this patent
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Abstract
The present invention relates to a spinal arthrodesis system including at least two types of implants from among the three following types: an intersomatic implant (IS), including at least one passage (40) mating at least one anchoring device (1); an interspinous implant (IE), including at least two wings able to run along a portion of the vertebral spines (EI, ES); a facet implant (IF) including a bone attachment.
Claims14
A system for arthrodesis of a first vertebra and a second vertebra adjacent to the first vertebra comprising:
- an intersomatic cage and a cage anchor;
- an interspinous implant comprising a body, a plurality of foldable wings movable with respect to the body and an insert coupled to one end of each foldable wing of the plurality of foldable wings, the insert linearly advanceable within the body to extend the plurality of foldable wings from a storage position within the body to a deployed position outside the body;
- and
- a facet screw having a longitudinal axis between a free end and a head, the screw comprising an internal conduit along at least a portion of the longitudinal axis and a plurality of windows extending from an exterior surface of the screw into the conduit.
A method for arthrodesis of a first vertebra and a second vertebra adjacent to the first vertebra comprising the steps of:
- placing a cage in an intervertebral space between the first vertebra and the second vertebra;
- inserting a curved anchor through a first passage in the cage accessible from outside the intervertebral space;
- fixing the cage to the first vertebra by advancing the anchor in the first passage until a tip of the anchor emerges from the first passage in the cage and enters into the first vertebra;
- inserting an interspinous implant body between a first spinous process of the first vertebra and a second spinous process of the second vertebra;
- inserting an interspinous implant insert into a second passage in the interspinous implant body;
- fixing the first spinous process and the second spinous process by
- advancing the interspinous implant insert in the second passage until a first stationary wing attached to the implant body is against a first side of the first spinous process, a second stationary wing attached to the implant body is against a first side of the second spinous process, a first foldable wing attached to the interspinous implant insert is against a second side of the first spinous process, and a second foldable wing attached to the interspinous implant insert is against a second side of the second spinous process,
- compressing the first stationary wing and the first foldable wing against the first spinous process, and
- compressing the second stationary wing and the second foldable wing against the second spinous process;
- and
- fixing a first articular facet of the first vertebra and a second articular facet of the second vertebra with a facet screw.
Dependencies are inferred from the claim text.