# US 2026/0174472 A1 · Adjustable, modular instrument and method for spinal manipulation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0174472 A1 - Document ID: US20260174472A1 - Status: Published application - Kind: A1 - Application number: 19/541,986 - Filed: 2026-02-17 - Published: 2026-06-25 - Earliest claimed: 2021-12-09 - Assignees: Globus Medical, Inc. - Applicants: Globus Medical, Inc. - Inventors: Caelan Allen - Web page: https://patentgrep.com/patent/US20260174472A1 ## CPC - A61B 17/66: {Alignment}, compression or distraction mechanisms - A61B 17/7032: {Screws or hooks with U-shaped head or back through which longitudinal rods pass} - A61B 17/7019: {Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other} - A61B 17/7023: {with a pivot joint} - A61B 17/7079: {Tools requiring anchors to be already mounted on an implanted longitudinal or transverse element, e.g. where said element guides the anchor motion} - A61B 17/7082: {for driving, i.e. rotating, screws or screw parts specially adapted for spinal fixation, e.g. for driving polyaxial or tulip-headed screws} - A61B 2017/681: {Alignment, compression, or distraction mechanisms} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A spinal manipulation instrument, system, and method may use a driving rod to move instrument arms toward or away from one another to compress or distract between selected vertebrae to which the arms are connected. Two arms may be coupled to the driving rod. A threaded collar may axially engage one of the arms, to translate that arm along the driving rod with respect to the other arm. The other arm may be at a fixed axial location or driven by another, oppositely-oriented thread. The arms may be highly adjustable to accommodate a wide range of anatomical variation between patients. Attachment members may be modular to interchangeably couple the arms across multiple platforms. ## Claims ### Claim 1 A spinal manipulation instrument, comprising: a driving rod with a threaded portion defining an axis therethrough; a first arm rotatably coupled to the driving rod about the axis; a second arm rotatably coupled to the driving rod about the axis; a threaded collar coupled to the threaded portion of the driving rod in axial engagement with the second arm, such that the second arm translates along the driving rod with respect to the first arm in response to the rotation of the driving rod about the axis, wherein the second arm includes a double-jointed arm and includes: a first arm segment pivotally coupled to the threaded collar and rotatable about a first arm axis parallel to the driving rod axis; and a second arm segment pivotally coupled to the first arm segment and rotatable about a second arm axis parallel to the driving rod axis; pedicle connectors configured for releasably coupling the first and second arms to respective vertebra. ### Claim 2 (depends on 1) The spinal manipulation instrument of claim 1, wherein the first arm is rotatably coupled to the driving rod at a fixed axial location, such that the first arm remains at the fixed axial location during a rotation of the driving rod about the axis. ### Claim 3 (depends on 1) The spinal manipulation instrument of claim 1, wherein each pedicle connector is configured for releasably coupling to a bone fastener extending from the respective vertebra. ### Claim 4 (depends on 3) The spinal manipulation instrument of claim 3, wherein the pedicle connectors comprise: a connector tip on each of the first and second arms; and a plurality of attachment members, each attachment member configured for interchangeably coupling one of the connector tips to the respective bone fastener. ### Claim 5 (depends on 4) The spinal manipulation instrument of claim 4, wherein the plurality of attachment members comprises modular attachment members having two or more different attachment member configurations for interchangeably coupling to the respective bone fastener. ### Claim 6 (depends on 4) The spinal manipulation instrument of claim 4, further comprising: a swivel for rotatably securing each attachment member to the first or second arm. ### Claim 7 (depends on 6) The spinal manipulation instrument of claim 6, wherein the swivel is lockable at any of a plurality of different swivel angles within a 360-degree swivel range. ### Claim 8 (depends on 1) The spinal manipulation instrument of claim 1, further comprising a releasable threaded connection between the threaded collar and the threaded portion of the driving rod, allowing for non-threaded axial re-positioning of the second arm along the driving rod when the threaded connection between the threaded collar and the threaded portion of the driving rod is released. ### Claim 9 (depends on 8) The spinal manipulation instrument of claim 8, wherein the releasable threaded connection comprises a cam lever mechanism or a spring-loaded button. ### Claim 10 (depends on 1) The spinal manipulation instrument of claim 1, wherein the at least one of the first and second arm segments includes a cam lever for releasably locking the respective arm segment at a selected angle between the arm segments. ### Claim 11 (depends on 1) The spinal manipulation instrument of claim 1, further comprising: a driving handle secured to the driving rod for applying a torque to the driving rod; and a torque limiter for limiting the torque applied to the driving rod. ### Claim 12 (depends on 11) The spinal manipulation instrument of claim 11, wherein the torque limiter comprises: friction-based torque limiters, detent torque limiters, digital torque limiters, magnetic torque limiters, pawl and spring torque limiters, and shear pin torque limiters. ### Claim 13 A spinal manipulation instrument, comprising: a driving rod with a threaded portion defining an axis therethrough; a first arm rotatably coupled to the driving rod about the axis at a fixed axial location along the driving rod, such that the first arm remains at the fixed axial location during a rotation of the driving rod about the axis; a second arm having a threaded collar coupled to the threaded portion of the driving rod, such that the second arm translates along the driving rod with respect to the first arm in response to the rotation of the driving rod about the axis, wherein the second arm includes a double-jointed arm and includes: a first arm segment pivotally coupled to the threaded collar and rotatable about a first arm axis parallel to the driving rod axis; and a second arm segment pivotally coupled to the first arm segment and rotatable about a second arm axis parallel to the driving rod axis; a pivot mount between at least one of the first and second arms and the driving rod allowing one of the first and second arms to pivot with respect to the other; and pedicle connectors configured for releasably coupling each of the first and second arm to a respective bone fastener, the pedicle connectors including a connector tip on each of the first and second arms, a plurality of modular attachment members of different attachment member configurations for interchangeably coupling one of the connector tips to the respective bone fastener, and a swivel allowing rotation of each attachment member about an axis of the respective first or second arm, wherein the swivel is lockable at any of a plurality of different swivel angles within a 360-degree swivel range. ### Claim 14 (depends on 13) The spinal manipulation instrument of claim 13, further comprising a releasable threaded connection between the threaded collar and the threaded portion of the driving rod, allowing for non-threaded axial re-positioning of the second arm along the driving rod when the threaded connection between the threaded collar and the threaded portion of the driving rod is released. ### Claim 15 (depends on 14) The spinal manipulation instrument of claim 14, wherein the releasable threaded connection comprises a cam lever mechanism or a spring-loaded button. ### Claim 16 (depends on 13) The spinal manipulation instrument of claim 13, wherein the at least one of the first and second arm segments includes a cam lever for releasably locking the respective arm segment at a selected angle between the arm segments. ### Claim 17 (depends on 13) The spinal manipulation instrument of claim 13, further comprising: a driving handle secured to the driving rod for applying a torque to the driving rod; and a torque limiter for limiting the torque applied to the driving rod.