Expandable intervertebral spacer
AssigneeGlobus Medical, Inc.
InventorKurt Faulhaber
Life of this patent
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Abstract
A spacer for separating bones of a joint, the spacer includes a first endplate configured to engage a first bone of the joint; a second endplate configured to engage a second bone of the joint; and an actuation subassembly comprising a drive nut, a drive screw coupled to the drive nut, and a cam frame coupled to the drive screw, wherein the cam frame is disposed between the first endplate and the second endplate, wherein the cam frame comprises a proximal frame end, a distal frame end, and lateral frame sides, wherein cams disposed on the lateral frame sides selectively engage at least one of the first endplate or the second endplate.
Claims20
A method of separating bones of a joint, comprising:
- inserting a spacer between bones of the joint;
- and
- translating a cam frame along a longitudinal axis of the spacer, wherein cams disposed on the cam frame engage at least one of a first endplate and a second endplate increasing a height of the spacer.
A method of separating bones of a joint, comprising:
- inserting a spacer between bones of the joint, wherein the spacer comprises:
- a first endplate configured to engage a first bone of the joint;
- a second endplate configured to engage a second bone of the joint;
- and
- an actuation subassembly comprising a drive nut, a drive screw coupled to the drive nut, and a cam frame coupled to the drive screw, wherein the cam frame is disposed between the first endplate and the second endplate, wherein the cam frame comprises a proximal end, a distal end, lateral sides, cam slots formed in the lateral sides of the cam frame, and cam pins that engage the cam slots;
- and
- rotating the drive nut to translate the cam frame along a longitudinal axis of the spacer, the cam frame engaging the cam pins to selectively engage at least one of the first endplate and the second endplate to increase a height of the spacer.
Dependencies are inferred from the claim text.