Patent ID: 11871972
Assignee: GLOBUS MEDICAL INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A spinal plate assembly comprising:
a base plate defining an aperture comprising a seat for receiving a bone screw;
a deformable split ring having a proximal end, a distal end, and a curved portion, the split ring overlying the aperture in its unbiased locked position, the curved portion of the split ring adapted to be flexed radially inwardly and away from the aperture through contact with a head of the bone screw when the bone screw is being inserted through the aperture and then to automatically return to the unbiased locked position over the inserted bone screw head to block the inserted bone screw;
a spring mount rotatably mounted in a recess of the base plate which is located adjacent to and intersects the aperture, the spring mount comprising a circumferential groove for retaining at least a portion of the split ring, and wherein when the spring mount is rotated, the split ring is also rotated in a same direction such that the curved portion of the split ring rotates and is compressed into the recess of the base plate to allow the inserted bone screw to be removed for purposes of a revision surgery.