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US 2023/0404634 A1Published application
Minimally invasive spinal fixation system and related methods
AssigneeNuVasive, Inc.
InventorsJustin Doose, Robert German, Scott Lish, Andrew Schafer, Eric Dasso, Derek J. Matteo, Thomas M. Sweeney, III
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Abstract
This application describes surgical instruments and implants for building a posterior fixation construct across one or more segments of the spinal column. Extension guides are provided that attach to bone anchors implanted within the spine. The extension guides have a guide channel that align with a rod channel in the anchor to help direct the rod to the anchor. Instruments are provided to aid in insertion and positioning or the rod.
Claims20
A spinal fixation anchor, comprising:
- an implantable portion including a rod housing having a first arm separated from a second arm by a rod channel;
- and
- an extension guide removably coupled to the rod housing, the extension guide including:
- a first extension arm and a second extension arm each having a distal end and a proximal end, the distal end of the first extension arm being coupled to the first arm of the rod housing by a first breakable joint, and the distal end of the second extension arm being coupled to the second arm of the rod housing by a second breakable joint,
- wherein the first breakable joint comprises a first surface groove positioned between the first arm and the first extension arm, and the second breakable joint comprises a second surface groove positioned between the second arm and the second extension arm, and
- wherein the proximal end of the first extension arm is removably coupled to the proximal end of the second extension arm by a pair of joint portions extending therebetween, wherein each of the pair of joint portions includes a first sidewall, a second sidewall opposite the first sidewall, and a breakable joint positioned between the first and second sidewalls, wherein the breakable joint of each of the pair of joint portions has an inwardly projecting surface.
3 more elements
A system comprising:
- a spinal fixation anchor including:
- an implantable portion including a rod housing having a first arm separated from a second arm by a rod channel, and
- an extension guide removably coupled to the rod housing, the extension guide including:
- a first extension arm and a second extension arm each having a distal end and a proximal end, the distal end of the first extension arm being coupled to the first arm of the rod housing by a first breakable joint, and the distal end of the second extension arm being coupled to the second arm of the rod housing by a second breakable joint,
- wherein the first breakable joint comprises a first surface groove positioned between the first arm and the first extension arm, and the second breakable joint comprises a second surface groove positioned between the second arm and the second extension arm, and
- wherein the proximal end of the first extension arm is removably coupled to the proximal end of the second extension arm by a pair of joint portions extending therebetween, wherein each of the pair of joint portions includes a first sidewall, a second sidewall opposite the first sidewall, and a breakable joint positioned between the first and second sidewalls, wherein the breakable joint of each of the pair of joint portions has an inwardly projecting surface;
- and
- a breaking tool adapted to sever a connection between one of the first and second extension arms and a corresponding one of the first and second arms of the rod housing.
5 more elements
Dependencies are inferred from the claim text.