Bone fixation apparatus
AssigneeU&I Corporation
InventorsChang-Hun Jeon, Howard S. An, Ja-Kyo Koo
Life of this patent
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Abstract
Disclosed is a bone fixation apparatus. This device comprises a bone screw having a head; a cap member placed on an upper part of the head of the bone screw; a receiver member having a bore in which the cap member and the head of the bone screw are respectively accommodated and held, and a U-shaped channel through which a support bar extends; and a compression member threadedly coupled into the receiver member to downwardly bias the support bar. A multitude of stepped portions are formed at a lower end and inner surface of the receiver member to be brought into linear contact with an outer surface of a lower part of the head so that the supporting force for the head of the bone screw is increased.
Claims7
A bone fixation apparatus comprising:
- a bone screw having a head;
- a cap member placed on an upper part of the head of said bone screw;
- a receiver member having a bore in which said cap member and the head of said bone screw are respectively accommodated and held, and a U-shaped channel through which a support bar extends;
- and
- a compression member threadedly coupled into said receiver member to downwardly bias said support bar;
- wherein a multitude of stepped portions are formed at a lower end and inner surface of said receiver member to be brought into linear contact with an outer surface of a lower part of the head so that supporting force for the head of said bone screw is increased.
Dependencies are inferred from the claim text.