Articulating expandable interbody fusions devices

Patent metadata

Field	Value
Publication number	US-12324745-B2
Application number	US-202117502522-A
Country	US
Kind code	B2
Filing date	Oct 15, 2021
Priority date	Jan 23, 2020
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

Articulating expandable fusion devices, systems, instruments, and methods thereof. The articulating expandable fusion implant having a plurality of links is capable of being deployed and articulated inside an intervertebral disc space link by link. After the links are articulated into a polygonal shape, the links may be expanded outwardly into an expanded configuration. Instruments may be provided to articulate and expand the implant.

First claim

What is claimed is:

1. An expandable implant comprising:
a cable defining a longitudinal axis;
an upper body;
a lower body; and
a core body slidably disposed between the upper and lower bodies, and including a plurality of links each adapted to be arranged in series with each other inside an insertion device with a first one of the links disposed at a distal end and a last one of the links disposed at a proximal end, the cable being routed through each of the links in series such that when one end of the cable is pulled, one end of the first link moves proximally towards one end of the last link, the core body slidable relative to at least one of the upper and lower bodies to expand the upper body relative to the lower body, wherein the core body is slidable in a direction perpendicular to the longitudinal axis of the cable.

2. The expandable implant of claim 1 , wherein the plurality of links are configured to articulate into a polygonal shape.

3. The expandable implant of claim 1 , wherein the plurality of links includes five links configured to articulate into a pentagon.

4. The expandable implant of claim 1 , wherein each of the links includes a through hole through which the cable is routed.

5. The expandable implant of claim 1 , wherein:
the upper body includes a plurality of pivotally connected segments;
the lower body includes a plurality of pivotally connected segments, the core body positioned between and slidably coupled to at least one of the upper and lower bodies.

6. The expandable implant of claim 5 , wherein the upper body includes one or more ramped surfaces, the lower body includes one or more ramped surfaces, and the core body includes one or more ramped surfaces, wherein translation of the core body causes the ramped surfaces of the core body to slide against the ramped surfaces of the upper and lower bodies, thereby resulting in vertical expansion of the expandable implant.

7. The expandable implant of claim 6 , wherein the ramped surfaces of the upper and lower bodies, respectively, define male ramps, and the ramped surfaces of the core body define female ramps.

8. The expandable implant of claim 7 , wherein the male ramps of the upper and lower bodies mate with the female ramps of the core body with dovetail slide ramps.

9. The expandable implant of claim 6 , wherein the upper body mates with the core body at a single ramp, and the lower body mates with the core body at two ramps.

10. The expandable implant of claim 6 , wherein each of the upper bodies includes first and second upper retaining rings, and each of the lower bodies includes first and second lower retaining rings, wherein the second upper retaining ring of the first segment connects to the first upper retaining ring of the second segment with a first pivot pin, the second lower retaining ring of the first segment connects to the first lower retaining ring of the second segment with a second pivot pin, the second upper retaining ring of the second segment connects to the first upper retaining ring of the third segment with a third pivot pin, and the second lower retaining ring of the second segment connects to the first lower retaining ring of the third segment with a fourth pivot pin.

11. An implantable device comprising:
a cable defining a longitudinal axis;
an upper body adapted to be in contact with a lower surface of a vertebral body;
a lower body adapted to be in contact with an upper surface of another vertebral body;
a core body slidably interposed between the upper and lower bodies, the core body including a plurality of links each adapted to be arranged in series with each other inside an insertion device with a first one of the links disposed at a distal end and a last one of the links disposed at a proximal end, the cable being routed through each of the links in series such that when one end of the cable is pulled, one end of the first link moves proximally towards one end of the last link and expand the upper body relative to the lower body by sliding the core body relative to the upper body to the lower body in a direction perpendicular to the longitudinal axis.

12. The implantable device of claim 11 , wherein:
the upper body includes a plurality of pivotally connected segments coupled to the corresponding ones of the core body links,
the lower body includes a plurality of pivotally connected segments coupled to the corresponding ones of the core body links.

13. The expandable implant of claim 12 , wherein the plurality of links and the corresponding segments of the upper and lower bodies are configured to articulate into a polygonal shape.

14. The expandable implant of claim 13 , wherein the plurality of links includes five links configured to articulate into a pentagon.

15. The expandable implant of claim 12 , wherein the core body is slidably coupled to the upper and lower bodies.

16. The expandable implant of claim 12 , wherein the upper body includes a plurality of ramped surfaces and the core body includes one or more ramped surfaces, wherein translation of the core body causes the ramped surfaces of the core body to slide against the ramped surfaces of the upper body, thereby causing vertical expansion of the expandable implant.

17. The expandable implant of claim 12 , wherein the lower body includes a plurality of ramped surfaces and the core body includes ramped surfaces, wherein translation of the core body causes the ramped surfaces of the core body to slide against the ramped surfaces of the lower body, thereby causing vertical expansion of the expandable implant.

18. The expandable implant of claim 11 , wherein each of the links includes a through hole through which the cable is routed.

19. The expandable implant of claim 11 , wherein:
the upper body includes a plurality of pivotally connected segments coupled to the corresponding ones of the core body links;
the lower body includes a plurality of pivotally connected segments coupled to the corresponding ones of the core body links; and
the core body is slidably coupled to the upper and lower bodies.

20. The expandable implant of claim 19 , wherein each of the core body links is slidably coupled to a corresponding one of the upper body segments.

Assignees

• Globus Medical Inc

Inventors

• Hessler Ty
• Glerum Chad
• Weiman Mark
• Hill Albert
• Sullivan Myles

Classifications

• A61F2002/4485

  comprising three or more adjacent spinal implants · CPC title

• A61F2002/30149

  pentagonal · CPC title

• A61F2/4611

  of spinal prostheses · CPC title

• A61F2002/4627

  with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument · CPC title

• A61F2002/30398

  Sliding · CPC title