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US 8,617,226 B2Granted
Screw for fixing vertebra
OwnerMin Seok Kiminventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to a screw for fixing vertebra comprising a cage as a prosthesis which can be extended to be protruded beyond an external diameter of a screw, and improving the drawback from detaching from the spine following surgical procedures.
Claims5
A screw for fixing vertebrae comprising:
- a screw head with a screw head inserting hole formed therein;
- a screw body, which is formed monolithically with the screw head, having a screw body inserting hole formed longitudinally therein in communication with the screw head inserting hole, and a screw body screw part formed on the outer circumference thereof;
- a moving member which is inserted in the screw body inserting hole slidably lengthwise and has a protrusion means protruded through one or more through holes formed on the outer circumference of the screw body, and a moving member screw part formed inside of the screw body;
- an actuating bolt having an actuating bolt screw part screw-joined with the moving member screw part to be rotatably mounted in the screw head inserting hole;
- and
- a stripper bolt which is inserted into the screw head inserting hole to fix a connecting rod arranged on the actuating bolt.
3 more elements
Dependencies are inferred from the claim text.