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US 12,685,570 B2Granted
Minimally invasive spinal fixation system and related methods
AssigneeGlobus Medical, Inc.
InventorsJustin Doose, Robert German, Scott Lish, Andrew Schafer, Eric Dasso, Derek J. Matteo, Thomas M. Sweeney, III
Life of this patent
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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.
Claims17
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 each of the pair of joint portions include opposed vertical surface grooves to reduce material thickness along each of the pair of joint portions;
- a guide cap configured to releasably couple to a respective proximal end of each of the first and second extension arms, the guide cap having a circular recess configured to surround the proximal ends of the first and second extension arms, and a pair of projections extending radially inwardly from an inner wall of the circular recess and adapted to be received in respective slots of the first and second extension arms.
5 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 each of the pair of joint portions include opposed vertical surface grooves to reduce material thickness along each of the pair of joint portions;
- a guide cap configured to releasably couple to a respective proximal end of each of the first and second extension arms, the guide cap having a circular recess configured to surround the proximal ends of the first and second extension arms, and a pair of projections extending radially inwardly from an inner wall of the circular recess and adapted to be received in respective slots of the first and second extension arms;
- 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.
7 more elements
Dependencies are inferred from the claim text.