Spinal osteosynthesis system for anterior fixation
AssigneeStryker Spine
InventorsRichard Assaker, Frédéric Conchy, Régis Le Couedic
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Abstract
The invention concerns a backbone osteosynthesis system comprising an elongated element, a vertebral screw, and a connecting element comprising two branches for clamping between them the linking element, at least one first branch being capable of being engaged onto the screw. The system comprises a second vertebral screw, the first branch having an extension capable of being engaged onto the second screw. The system may comprise a second elongated linking element.
Claims32
A spinal osteosynthesis system, in particular for anterior fixation, comprising an elongate connection element, a first vertebral screw, and a connector including two branches which are able to clamp the connection element between them adjacent a first end of each branch, at least a first of the branches being able to be engaged on the screw, a second vertebral screw, the first branch having an extension with an opening therein which can be engaged on the second screw the first and second screw being spaced towards a second end of said first branch from said connection element at said first end of said branch.
A connector for a spinal osteosynthesis system comprising first and second branches which can clamp an elongate connection element between them adjacent a first end of first branch, at least the first branch having a first opening which can be engaged on a vertebral screw, the first branch has an extension having a second opening which can be engaged on a second vertebral screw the first and second opening on said first branch are spaced from said elongate connection element towards a second end of said first branch.
A spinal system comprising:
- an elongate connecting rod;
- a first vertebral screw for insertion into a vertebra;
- a connector for connecting said rod and said first screw, said connector having a first branch for location adjacent the vertebra and a second branch, said branches having facing surfaces adjacent a first end of said first branch for engaging said rod;
- a clamping element acting on said first and second branches to clamp said rod therebetween;
- and
- a second vertebral screw, said first and second vertebral screws engaging said first branch at points thereon spaced from said rod towards a second end of said first branch.
A method for connecting a spinal rod to a vertebra comprising:
- inserting a first vertebral screw into the vertebra, said screw having a head;
- positioning a vertebral facing surface surrounding a first orifice in a first branch of a connector having first and second branches on the head of said first screw, said branches encompassing a rod receiving portion;
- inserting a second vertebral screw into the vertebra through a second orifice in said first branch of said connector;
- inserting a rod into said rod receiving portion;
- inserting a clamping element through an orifice in said second branch and into clamping engagement with the head of said first vertebral screw;
- and
- clamping said first and second branches together with said rod therebetween by the engagement of said clamping element and said first screw head.
Dependencies are inferred from the claim text.