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US 12,599,421 B2Granted
Sacral tether anchor and methods of use
AssigneeEmpirical Spine, Inc.
InventorsTodd Alamin, Louis Fielding, Darin Gittings, Hugues Malandain, Anand Parikh, Eller Torres, Ian Bennett
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Abstract
A system for restricting flexion of a spinal segment in a patient comprises a constraint device having a tether structure and a compliance member coupled with the tether structure. The tether structure is adapted to be coupled with a superior spinous process and a sacrum. The system also includes an anchor member that is anchored to the sacrum. The anchor member has an attachment feature that is adapted to couple with the constraint device.
Claims1
A method for restricting flexion of a spinal segment of a patient, said method comprising:
- providing a constraint device having a tether structure, the tether structure comprising an upper portion and a lower portion, the tether structure configured to restrict flexion of the spinal segment while allowing substantially unrestricted spinal extension;
- coupling the upper portion of the tether structure to a spinous process of a superior vertebra in the spinal segment;
- anchoring an anchor element to a sacrum of the patient inferior to the superior vertebra, wherein the anchor element comprises a plate having a plurality of protrusions, the plurality of protrusions configured to penetrate the sacrum,
- wherein anchoring the anchor element comprises anchoring the anchor element to the sacrum by the plurality of protrusions without using screws, and
- wherein anchoring the plurality of protrusions only penetrates cortical bone on a dorsal surface of the sacrum;
- and
- coupling the lower portion of the tether structure to an attachment feature on the anchor element.
4 more elements
Dependencies are inferred from the claim text.