# US 10,441,331 B2 · Fixing tool for open-wedge high tibial osteotomy > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,331 B2 - Document ID: US10441331B2 - Status: Granted - Kind: B2 - Application number: 15/303,830 - Filed: 2014-05-07 - Published: 2017-02-02 - Granted: 2019-10-15 - Earliest claimed: 2014-04-18 - Applicants: Hae Sun Paik - Inventors: Hae Sun Paik - Web page: https://patentgrep.com/patent/US10441331B2 ## CPC - A61B 17/8061: {specially adapted for particular bones (A61B17/70 and A61B17/74 take precedence)} - A61B 17/80: Cortical plates {, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates} - A61B 17/8004: {with means for distracting or compressing the bone or bones} - A61B 17/8095: {Wedge osteotomy devices} - A61B 17/82: for bone cerclage {(apparatus for manipulating wires or straps A61B17/8861; wires, bands or straps other than cerclage A61B17/842)} - A61B 17/86: Pins or screws {or threaded wires; nuts therefor (A61B17/72 take precedence)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The present invention relates to a fixing tool for an open-wedge high tibial osteotomy, and the fixing tool for an open-wedge high tibial osteotomy, which is installed on a tibia cut open due to an open-wedge tibial osteotomy, includes: a fixing plate which includes a head portion that has a plurality of head nut holes, and an elongated plate that has an upper nut hole, a lower nut hole, and a long hole formed between the upper nut hole and the lower nut hole, and protrudes from one side of the head portion; screws which are coupled to the head nut holes, the upper nut hole, and the lower nut hole so as to fix the fixing plate to the tibia; and a support screw which is installed by being moved along the long hole formed to be spaced apart at a predetermined interval from the upper nut hole formed at a side adjacent to the head portion. Therefore, the fixing tool is closely fixed to a tibia, which has been cut open due to a procedure of a high tibial osteotomy, thereby enabling solid union of the tibia. ## Claims ### Claim 1 A fixing tool for an open-wedge high tibial osteotomy, which is configured to be installed on a tibia cut open due to an open-wedge tibial osteotomy, the fixing tool comprising: a fixing plate comprising: a head portion with an upper side, a lower side opposite to the upper side, a left side directly contacting the upper side at a left edge, a right side directly contacting the upper side at a right edge, a top surface, and a bottom surface, the head portion comprising a plurality of head nut holes that penetrate the top surface and the bottom surface, and an elongated plate portion protruding from the lower side of the head portion in a longitudinal direction that is perpendicular to a width direction, the elongated plate portion comprising an upper nut hole, a lower nut hole, and an elongated hole formed between the upper nut hole and the lower nut hole and spaced apart from the upper nut hole at a predetermined interval; screws which are coupled to the head nut holes, the upper nut hole, and the lower nut hole configured to fix the fixing plate to the tibia; and a support screw which is installed in the elongated hole, wherein the head portion has a predetermined curvature with a first radius, and the head nut holes include at least two nut holes that are canted with respect to the curvature, the elongated plate portion has a predetermined curvature with a second radius in the width direction, and the second radius is greater than the first radius, wherein a first center of a circle defined by the first radius is offset from a second center of a circle defined by the second radius, and wherein the upper side is inclined from the width direction at an inclination angle. ### Claim 2 (depends on 1) The fixing tool of claim 1, wherein the head nut holes are inclined to have a gradient of 8 to 12 degrees in a direction toward the elongated plate portion. ### Claim 3 (depends on 1) The fixing tool of claim 1, wherein the inclination angle is 5 to 7 degrees. ### Claim 4 (depends on 1) The fixing tool of claim 1, wherein a portion of the elongated plate portion connected with the head portion is bent to have a bending angle. ### Claim 5 (depends on 4) The fixing tool of claim 4, wherein the bending angle is 13 to 16 degrees. ### Claim 6 (depends on 1) The fixing tool of claim 1, wherein a plurality of the lower nut holes are disposed to be zigzag from each other in a longitudinal direction of the elongated plate portion. ### Claim 7 (depends on 1) The fixing tool of claim 1, wherein the screw installed in the upper nut hole is installed to be inclined toward the head portion. ### Claim 8 (depends on 7) The fixing tool of claim 7, wherein a length of the screw installed in the upper nut hole is smaller than that of the screw installed in the head portion. ### Claim 9 (depends on 1) The fixing tool of claim 1, wherein the fixing plate includes at least three guide holes formed such that guide pins are installed in at least three guide holes. ### Claim 10 (depends on 9) The fixing tool of claim 9, wherein the head portion has two guide holes, the elongated plate has one guide hole, and the guide hole formed in the elongated plate portion is formed at a side configured to be placed adjacent to a patella. ### Claim 11 (depends on 1) The fixing tool of claim 1, wherein the predetermined interval is 17 to 21 mm. ### Claim 12 (depends on 1) The fixing tool of claim 1, wherein the head nut holes are inclined to have a gradient of 8 to 12 degrees in a direction toward the elongated plate portion, wherein the inclination angle is 5 to 7 degrees, wherein a portion of the elongated plate portion connected with the head portion is bent to have a bending angle of 13 to 16 degrees, and wherein the predetermined interval is 17 to 21 mm.