Expandable intervertebral implants and methods of installation thereof

Patent metadata

Field	Value
Publication number	US-11564808-B2
Application number	US-202017121939-A
Country	US
Kind code	B2
Filing date	Dec 15, 2020
Priority date	May 14, 2015
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

Embodiments herein are generally directed to expandable spinal implants, systems, apparatuses, and components thereof that can be used in spinal fusion and/or stabilization procedures, as well as methods of installation. The expandable spinal implants may be configured for lateral insertion.

First claim

What is claimed is:

1. A laterally expanding intervertebral spacer comprising:
a body having a leading end, a trailing end, an upper wall adapted to contact a lower surface of a vertebral body and a lower wall adapted to contact an upper surface of an adjacent vertebral body;
a first arm having a first end pivotally and translatably coupled to the body and a second end;
a second arm having a first end pivotally and translatably coupled to the body and a second end;
an actuator for laterally extending the second ends of the first and second arms and a translating connector coupled between the actuator and the first arm, and adapted to translate relative to the actuator, wherein the body includes an elongate recess and the first arm has a protrusion received in the elongate recess for rotation and translation relative to the body when the translating connector translates relative to the actuator.

2. The spacer of claim 1 , wherein the second ends of the first and second arms are pivotally coupled to each other such that extension of the second end of the first arm by the actuator simultaneously causes extension of the second end of the second arm.

3. The spacer of claim 1 , wherein:
the actuator includes an external threading;
the translating connector includes an external thread section in mesh with the external threading of the actuator such that rotation of the actuator causes translation of the translating connector.

4. The spacer of claim 1 , wherein the translating connector includes a vertical slot and the first arm includes a post received in the vertical slot of the translating connector.

5. The spacer of claim 1 , wherein the body includes an internal passage and one end of the actuator includes a tool engaging surface to receive a driver through the internal passage for actuating the actuator.

6. The spacer of claim 1 , wherein the body includes first and second grooves and the second arm has first and second protrusions respectively received in the first and second grooves.

7. The spacer of claim 6 , wherein a distance between the first and second grooves decreases in a direction away from the trailing end and toward the leading end.

8. The spacer of claim 1 , wherein the actuator has a circumferential groove, further comprising a pair of pins disposed in the circumferential groove to prevent translation of the actuator.

9. A laterally expanding intervertebral spacer comprising:
an elongate body having a trailing end and a leading end and a cutout therebetween;
a first arm having a first end pivotally and translatably coupled to the body and a second end;
a second arm having a first end pivotally and translatably coupled to the body and a second end pivotally coupled to the second end of the first arm;
wherein the second ends of the first and second arm are disposed in the cutout in a contracted state;
an actuator for laterally extending the second ends of the first and second arm in an expanded state, wherein the first and second arms laterally expand by rotation and translation of both the first and second arms; and
a translating connector coupled between the actuator and the first arm, and adapted to translate relative to the actuator, wherein the body includes an elongate recess and the first arm has a protrusion received in the elongate recess for rotation and translation relative to the body when the translating connector translates relative to the actuator.

10. The spacer of claim 9 , wherein the second ends of the first and second arms are pivotally coupled to each other through a pivotal pin received in respective holes of the first and second arms.

11. The spacer of claim 9 , wherein:
the actuator includes an external threading;
the translating connector includes an external thread section in mesh with the external threading of the actuator such that rotation of the actuator causes translation of the translating connector.

12. The spacer of claim 9 , wherein the translating connector includes a vertical slot and the first arm includes a post received in the vertical slot of the translating connector.

13. The spacer of claim 9 , wherein the body includes an internal passage and one end of the actuator includes a tool engaging surface to receive a driver through the internal passage for actuating the actuator.

14. The spacer of claim 9 , wherein the body includes first and second grooves and the second arm has first and second protrusions respectively received in the first and second grooves.

15. The spacer of claim 14 , wherein a distance between the first and second grooves decreases in a direction away from the trailing end and toward the leading end.

16. The spacer of claim 9 , wherein the actuator has a circumferential groove, further comprising a pair of pins disposed in the circumferential groove to prevent translation of the actuator.

Assignees

• Globus Medical Inc

Inventors

• Faulhaber Kurt
• Miccio Mark
• Ramakrishnan Prem

Classifications

• A61F2/4455

  for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages (intervertebral discs A61F2/442) · CPC title

• A61F2/447 Primary

  substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section · CPC title

• A61F2002/3052

  unrestrained in only one direction, e.g. moving unidirectionally · CPC title

• A61F2002/30187

  D-shaped or half-disc-shaped · CPC title

• A61F2002/2835

  Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material · CPC title