CPC A61B 17/7032 (2013.01) [A61B 17/704 (2013.01); A61B 17/7037 (2013.01)] | 20 Claims |
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.
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