Spondylisthesis reduction system
AssigneeAlphatec Spine, Inc.
InventorStanley Kyle Hayes
Life of this patent
Estimating the term…
Abstract
A system for reducing deformities of the vertebrae in the spine includes a first reduction assembly, a second reduction assembly, and a reduction drive assembly. The first reduction assembly is configured for attachment to a first reduction tower that attaches to a first vertebra. The second reduction assembly is configured for attachment to a second reduction tower that attaches to a second vertebra. The reduction drive assembly includes an arcuate rack gear operably coupling the first reduction assembly to the second reduction assembly to translate the first reduction assembly relative to the second reduction assembly along an arcuate path in a first plane.
Claims20
A system for reducing deformities in a spine, comprising:
- a first tower assembly;
- a first reduction assembly operably coupled to a proximal end of the first tower assembly;
- a second tower assembly;
- a second reduction assembly operably coupled to a proximal end of the second tower assembly, the second reduction assembly further comprising a reduction drive assembly, wherein the reduction drive assembly comprises a rack driven by a pinion gear;
- wherein the second reduction assembly is operably coupled to the first reduction assembly via the reduction drive assembly, such that the reduction drive assembly transmits a leverage to the first reduction assembly causing it to move proximally relative to the second reduction assembly.
A system for reducing deformities in a spine, comprising:
- a first tower assembly configured to attach to a first vertebra and extend in a posterior direction relative to the first vertebra;
- a first reduction assembly operably coupled to a proximal end of the first tower assembly;
- a second tower assembly configured to attach to a second vertebra and extend in a posterior direction relative to the second vertebra, the second vertebra being caudal to the first vertebra;
- a second reduction assembly operably coupled to a proximal end of the second tower assembly, the second reduction assembly further comprising a reduction drive assembly, wherein the reduction drive assembly comprises a rack driven by a pinion gear;
- wherein the reduction drive assembly is operably coupled to the first reduction assembly via the rack, such that the reduction drive assembly transmits a leverage to the first reduction assembly to cause the first vertebra to move, relative to the second vertebra, from an unreduced state into a reduce state.
Dependencies are inferred from the claim text.