Back to results
US 11,890,036 B2Granted
Closed-head polyaxial and monaxial screws
AssigneeGlobus Medical, Inc.
InventorsBrad Juchno, Milan George
Life of this patent
Estimating the term…
Abstract
A closed-head polyaxial screw for use in spinal instrumentation for spinal fusion, treatment of deformity, or the like. Polyaxial screws may have a two-part design, with the screw fitting into an aperture in the closed head. One or more clamps may secure the bone screw in the aperture. A closed-head polyaxial screw having a one part design is also disclosed. In addition, a one-part monaxial screw is described.
Claims20
A method of assembling a closed-head polyaxial screw assembly comprising:
- providing a closed head having an upper aperture having an internal threading, a lower aperture and a rod aperture between the upper and lower apertures and being a through-opening for receiving a rod;
- inserting a set screw having a threaded upper portion and a retaining lip upwardly through the lower aperture, the retaining lip preventing the set screw from being removed from the upper aperture;
- inserting a clamp upwardly through the lower aperture;
- inserting a polyaxial screw through the upwardly through the lower aperture such that a head of the polyaxial screw is surrounded by the inserted clamp.
1 more element
A method of assembling a closed-head polyaxial screw assembly comprising:
- providing a closed head having an upper aperture having an internal threading, a lower aperture and a rod aperture positioned between the upper and lower apertures, the rod aperture being a through-opening for receiving a rod;
- inserting a set screw having a threaded upper portion and a retaining lip upwardly through the lower aperture, and threading the threaded upper portion with the internal threading of the upper aperture, the retaining lip preventing the set screw from being removed from the upper aperture;
- after inserting the set screw, inserting a clamp upwardly through the lower aperture;
- after inserting the clamp, inserting a polyaxial screw through the upwardly through the lower aperture such that a head of the polyaxial screw is surrounded by the inserted clamp.
1 more element
Dependencies are inferred from the claim text.