# US 12,594,107 B2 · Minimally invasive surgery osteotomy fragment shifter, stabilizer, and targeter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,594,107 B2 - Document ID: US12594107B2 - Status: Granted - Kind: B2 - Application number: 19/251,959 - Filed: 2025-06-27 - Published: 2025-10-16 - Granted: 2026-04-07 - Earliest claimed: 2021-06-17 - Assignees: Wright Medical Technology, Inc. - Applicants: Wright Medical Technology, Inc. - Inventors: Zachary Korman; Shannon D. Cummings - Web page: https://patentgrep.com/patent/US12594107B2 ## CPC - A61B 17/8866: {for gripping or pushing bones, e.g. approximators (joint distractors A61B17/025)} - A61B 17/1775: {for the foot or ankle} - A61B 17/66: {Alignment}, compression or distraction mechanisms - A61B 17/8897: {Guide wires or guide pins} - A61B 2017/565: {for surgical correction of axial deviation, e.g. hallux valgus or genu valgus} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A bone alignment system to correct a hallux valgus deformity includes a main body including an intramedullary (IM) hook, the IM hook including an end portion sized and configured to be inserted into an intramedullary canal of at least one of a first fragment or a second fragment of a bisected metatarsal; and a screw assembly including a screw threaded through the main body and a skin-interfacing portion attached to a first end of the screw, wherein the main body defines an aperture that extends through the main body and is sized and configured to guide a guide pin for anchoring the main body to the metatarsal. ## Claims ### Claim 1 A bone alignment system to correct a hallux valgus deformity comprising: a main body including an intramedullary (IM) hook, the IM hook including a tapered end portion sized and configured to be inserted into an intramedullary canal of at least one of a first fragment or a second fragment of a bisected metatarsal; and a screw assembly including a screw threaded through the main body and a wedge shaped skin-interfacing portion attached to a first end of the screw, wherein the main body defines an aperture that extends through the main body and is sized and configured to guide a guide pin for anchoring the main body to the metatarsal. ### Claim 2 (depends on 1) The system of claim 1, wherein the IM hook is substantially L-shaped. ### Claim 3 (depends on 1) The system of claim 1, wherein the IM hook has a rectangular cross-sectional shape that includes a portion terminating at the tapered end. ### Claim 4 (depends on 1) The system of claim 1, wherein so that rotation of the screw is configured to pivot the system against a patient's skin such that a portion of the IM hook and a longitudinal axis through the screw are aligned substantially perpendicular to the first fragment or the second fragment. ### Claim 5 (depends on 1) The system of claim 1, wherein the screw is cannulated such that an anchor pin can be inserted though the screw and the skin-interfacing portion and into the metatarsal. ### Claim 6 (depends on 1) The system of claim 1, wherein the skin-interfacing portion is configured to be moved relative to the main body by rotating the screw. ### Claim 7 (depends on 1) The system of claim 1, wherein the main body is configured to pivot relative to the skin-interfacing portion when the skin-interfacing portion is against a patient's skin outside the metatarsal and the IM hook is disposed in an intramedullary canal of the metatarsal to change orientation of the second fragment with respect to the first fragment. ### Claim 8 (depends on 1) The system of claim 1, wherein the screw assembly further includes a head attached to a second end of the screw with a diameter that is larger than a diameter of a shaft of the screw and that can be used to grip the screw to provide a rotational force by at least one of a hand or a tool. ### Claim 9 (depends on 1) The system of claim 1, wherein the aperture is two apertures. ### Claim 10 (depends on 1) The system of claim 1, wherein the skin interfacing portion is arranged and configured to generate a lateral force against the metatarsal when the screw is rotated while the end portion of the IM hook is in the intramedullary canal. ### Claim 11 (depends on 1) A kit comprising: the system of claim 1, and the guide pin. ### Claim 12 A system comprising: a body including a hook terminating in a tapered end and further including an end portion sized and configured to be inserted into an intramedullary canal of at least one fragment of a bisected metatarsal; a screw disposed within a hole defined by the body, the screw including a wedge shaped skin-interfacing portion at a first end and a user-interface at a second end, wherein the screw defines an aperture that is sized and configured to receive a pin therethrough. ### Claim 13 (depends on 12) The system of claim 12, wherein the body defines an aperture that extends through the body and is sized configured to guide a guide pin for anchoring the body to the metatarsal. ### Claim 14 (depends on 13) The system of claim 13, wherein the body defines a plurality of apertures that extend through the body that are each sized and configured to guide a guide pin for anchoring the body to the metatarsal. ### Claim 15 (depends on 12) The system of claim 12, wherein the hook is substantially L-shaped. ### Claim 16 (depends on 12) The system of claim 12, wherein the hook has a rectangular cross-sectional shape that includes a portion terminating at the tapered end. ### Claim 17 (depends on 12) The system of claim 12, wherein rotation of the screw is configured to pivot the system against a patient's skin such that a portion of the hook and a longitudinal axis through the screw are aligned substantially perpendicular to the at least one fragment of the bisected metatarsal. ### Claim 18 (depends on 12) The system of claim 12, wherein the body is configured to pivot relative to the skin-interfacing portion when the skin-interfacing portion is against a patient's skin outside the metatarsal and the hook is disposed in the intramedullary canal to change orientation of a second fragment with respect to a first fragment of the at least one fragment of the bisected metatarsal. ### Claim 19 (depends on 12) The system of claim 12, wherein the skin interfacing portion is arranged and configured to generate a lateral force against the metatarsal when the screw is rotated while the end portion of the hook is in the intramedullary canal.