Bone fusion device
AssigneeL&K Biomed Co., Ltd.
InventorsGook-Jin Kang, Sunny Kim
Life of this patent
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Abstract
The present invention provides a bone fusion device which allows a distant bone body in a surgery direction to be pulled toward an adjacent bone body in the surgery direction while fusing the adjacent bone bodies. The bone fusion device includes a bone screw which includes a shank having an elongated shape with a circular cross-section, a screw thread formed on one end portion of the shank, and an adjustment female thread formed in the other end portion of the shank; a washer which includes a through hole into which the other end portion of the shank is inserted, and has a cross-sectional area larger than that of the bone screw; and an adjustment screw having an adjustment male thread screwed with the adjustment female thread of the bone screw through a through hole of the washer.
Claims12
A bone fusion device comprising:
- a bone screw which includes a shank having an elongated shape with a circular cross-section, a screw thread formed on one end portion of the shank, and an adjustment female thread formed in the other end portion of the shank;
- a washer which includes a through hole into which the other end portion of the shank is inserted, and has a cross-sectional area larger than that of the bone screw;
- and
- an adjustment screw having an adjustment male thread screwed with the adjustment female thread of the bone screw through a through hole of the washer,
- wherein the washer includes a washer tube having a through hole formed therein, and a flange part integrally formed with the washer tube and having a cross-sectional area larger than that of the washer tube;
- and
- wherein the washer tube has an outer diameter gradually increased toward the flange part.
Dependencies are inferred from the claim text.