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US 11,076,892 B2Granted
Anterior cervical plate
AssigneeNeurostructures, Inc.
InventorsMoti Altarac, Joey Reglos
Life of this patent
Estimating the term…
Abstract
An anterior cervical plate system is provided. The plate is configured to receive bone screws for attachment to and immobilization of adjacent vertebrae of the spine. The system includes a cup retained inside a through hole of the plate by a cup retainer. A bone screw is retained inside the cup by a lock that is movable between a locked position and an unlocked position. The cup is permitted to angulate forward and backward with respect to the plate and the bone screw is permitted to angulate conically with respect to the cup to provide a plate system with extreme angulation for the bone screw.
Claims20
A bone plate system, comprising:
- a plate having at least one through hole configured to receive a bone screw;
- the plate having an upper surface and a lower surface interconnected by side surfaces;
- the plate includes a lock aperture adjacent to the at least one through hole;
- two oppositely disposed flat surfaces formed inside the at least one through hole;
- the plate including a groove formed at the at least one through hole;
- a bone screw having a head portion connected to a shank portion;
- the bone screw being sized and configured for insertion into the through hole;
- a lock retainer located inside the lock aperture;
- a lock having a main body connected to a lock post;
- the lock being connected to the plate by the lock retainer such that the lock is permitted to rotate with respect to the plate between an unlocked position in which the main body of the lock does not cover the head of the bone screw inside the through hole permitting passage of the bone screw in or out of the through hole and a locked position in which at least part of the main body is above the head portion of the bone screw to prevent the bone screw from backing out of the through hole;
- a cup located inside the at least one through hole;
- the cup having an inner surface and an outer surface;
- the inner surface defining a lumen sized and configured to receive at least a portion of the bone screw;
- the outer surface of the cup including two oppositely disposed flat surfaces;
- and
- a cup retainer located inside the groove;
- the cup retainer being sized and configured to retain the cup inside the at least one through hole;
- wherein the cup is retained inside the at least one through hole such that the flat surfaces of the cup face the flat surfaces inside the through hole and the cup is movable with respect to the plate.
15 more elements
A bone plate system, comprising:
- a plate having at least one through hole configured to receive a bone screw;
- the plate having an upper surface and a lower surface interconnected by side surfaces and a longitudinal axis;
- a bone screw having a head portion connected to a shank portion;
- and
- a cup located inside at least one through hole;
- the cup having an inner surface and an outer surface;
- the inner surface defining a lumen sized and configured to receive at least a portion of the bone screw;
- wherein the cup is connected to the plate such that the cup is retained and permitted to angulate with respect to the plate;
- and
- wherein the bone screw is connected to the plate such that the head portion of the bone screw is located inside the cup and the bone screw is permitted to angulate with respect to the cup.
7 more elements
A bone plate system, comprising:
- a plate having at least one through hole configured to receive a bone screw;
- the plate having an upper surface and a lower surface interconnected by side surfaces and a longitudinal axis;
- and a groove formed near the upper surface of the plate in the location of the at least one through hole;
- a bone screw having a head portion connected to a shank portion;
- and
- a cup located inside at least one through hole;
- the cup having an inner surface and an outer surface interconnected by a top surface and a bottom surface;
- the inner surface defining a lumen sized and configured to receive at least a portion of the bone screw;
- the cup having a shorter front relative to a longer back;
- and
- a cup retainer located inside the groove;
- the cup retainer being sized and configured to retain the cup inside the at least one through hole such that the cup is permitted to angulate with respect to the plate;
- the cup retainer includes a scallop sized and configured to permit angulation of the back of the cup through the scallop;
- and
- wherein the bone screw is connected to plate such that the bone screw is permitted to angulate with respect to the cup.
12 more elements
Dependencies are inferred from the claim text.