Patent ID: 11969357
Assignee: K2M, INC.
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 1:
2. An intervertebral spacer comprising:
a superior surface configured to engage a superior vertebral body;
an inferior surface configured to engage an inferior vertebral body;
a proximal end comprising:
at least one fastener channel configured to receive a fastener, the at least one fastener channel oriented to pass through the proximal end of the intervertebral spacer and the superior and/or inferior surface of the intervertebral spacer; and
a locking member channel comprising:
an inner wall; and
inner wall engagement features including a first recess and a second recess; and
a locking member comprising:
an anti-backout member;
a collet retainable within the locking member channel; and
collet engagement features including a first protrusion and a second protrusion;
wherein:
 the locking member is rotatable within the locking member channel between an unlocked position and a locked position;
 in the unlocked position, the collet engagement features engage the inner wall engagement features in order to retain the locking member in the unlocked position, independently of any additional component besides the locking member and the intervertebral spacer, and the anti-backout member does not obstruct the fastener channel; and
 in the locked position, the collet engagement features engage the inner wall engagement features to retain the locking member in the locked position, independently of any additional component besides the locking member and the intervertebral spacer, and the anti-backout member obstructs the fastener channel in order to prevent the fastener from backing out of the fastener channel;

wherein the collet is compressible.