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US 12,575,941 B2Granted
Expandable fusion device and method of installation thereof
AssigneeGlobus Medical, Inc.
InventorsJoel Cryder, James Himmelberger, Mark Weiman, Jason Zappacosta
Life of this patent
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Abstract
The present disclosure relates to an anti-rotation locking system for an expandable implant. The anti-rotation locking system may include a screw comprising a screw head comprising a plurality of notches. The anti-rotation locking system further comprises a housing and a locking member comprising a ring, a partial ring, and a strut coupling the ring to the partial ring.
Claims19
An expandable spacer with an anti-rotation lock, comprising:
- a pair of endplates;
- a body having a through hole and disposed between the pair of endplates;
- a screw received in the through hole of the body and having a screw head, the screw head including a plurality of circumferentially disposed notches, wherein rotation of the screw causes the pair of endplates to move apart relative to each other;
- a retainer ring disposed in the body to retain the screw in the body;
- an anti-rotation lock disposed around the screw head and including:
- a ring;
- a partial ring;
- and
- a strut directly attached between the ring and the partial ring, and configured to rest in one of the notches.
6 more elements
An expandable spacer with an anti-rotation lock, comprising:
- a pair of endplates;
- a body having a through hole and disposed between the pair of endplates, the body further having a recess extending radially outwardly from the through hole;
- a screw received in the through hole of the body and having a screw head, the screw head including a plurality of circumferentially disposed notches, wherein rotation of the screw causes the pair of endplates to move apart relative to each other;
- an anti-rotation lock disposed around the screw head and including:
- a ring defining an opening;
- a partial ring;
- and
- a strut directly attached between the ring and the partial ring, and configured to rest in one of the notches, the strut having a radially extending portion received in the recess to prevent the screw from rotation relative to the body.
5 more elements
Dependencies are inferred from the claim text.