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US 12,178,486 B2Granted
Transdiscal screw
AssigneeH. Lee Moffitt Cancer Center and Research Institute, Inc.
InventorsSabrina A. Gonzalez Blohm, James J. Doulgeris, Kamran Aghayev, Frank D. Vrionis
Life of this patent
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Abstract
This invention relates to a transdiscal screw capable of following a non-linear trajectory. The screw assembly includes a first screw and second screw coupled at a poly-axial joint. The first screw and the second screw capable of rotating independently of each other. The screw can also include a third screw coupled to the second screw at a poly-axial joint such that the first screw, second screw and third screw can rotate independently of each other.
Claims18
A screw assembly for transdiscal fixation of vertebral bodies including:
- a first screw;
- a second screw defining a central passage;
- and
- a poly-axial joint at least partially coupling the second screw to the first screw, the poly-axial joint at least partially disposed within the central passage of the second screw;
- wherein the first screw and the second screw rotate independently of each other;
- wherein the second screw is configured to advance axially over at least a portion of the poly-axial joint to fix an orientation of the first screw with respect to the second screw in at least one direction.
3 more elements
Dependencies are inferred from the claim text.