US 11,771,473 B2
Polyaxial pedicle screw
Bret Michael Berry, Tallahassee, FL (US)
Filed by Phoenyx Spinal Technologies, Inc., Tallahassee, FL (US)
Filed on Feb. 4, 2022, as Appl. No. 17/665,146.
Prior Publication US 2023/0248396 A1, Aug. 10, 2023
Int. Cl. A61B 17/70 (2006.01)
CPC A61B 17/7032 (2013.01) [A61B 17/704 (2013.01); A61B 17/7037 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pedicle screw device, comprising:
a bone screw member having a threaded head portion; and
a head assembly comprising:
a tulip member formed with a locking member aperture;
a locking member comprising a top portion with a drive feature and a bottom portion formed with an expandable aperture having internal threads configured to threadably engage with the threaded head portion of the bone screw, wherein the locking member is disposed in the tulip member;
a collet member formed with an opening providing access to the drive feature of the locking member; and
one or more connectors connecting the tulip member to the collet member to prevent rotation of the collet member within the tulip member.