Mesh spacer hybrid

• US 9,925,058 B2
• Filed: 03/31/2017
• Issued: 03/27/2018
• Est. Priority Date: 07/25/2012
• Status: Active Grant

• Current Assignee: Spineology Incorporated
• Original Assignee: Spineology Incorporated
• Inventors: Wolfe, Steve, Becker, Bryan, Walnofer, Tim, Boylan, Clint, McPhillips, Dan, Wang, Michael, Kuhns, Craig, Ganske, Garrett
• Primary Examiner(s): WOODALL, NICHOLAS W
• Application Number:
  US15/476,911
• Publication Number:
  US 20170202677A1
• Time in Patent Office: 361 Days
• CPC Class Codes: A61F 2/2846 Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects nets or sleeves applied to surface of endoprostheses A61F2/30907; bone plates A61B17/80; bone regeneration in dental surgery A61C8/0006
• CPC Class Codes: A61F 2/441 made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2/4425 made of articulated components
• CPC Class Codes: A61F 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2/446 having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones
• CPC Class Codes: A61F 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2/4603 for insertion or extraction of endoprosthetic joints or of accessories thereof
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30004 the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
• CPC Class Codes: A61F 2002/30011 differing in porosity
• CPC Class Codes: A61F 2002/30014 differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2002/30019 differing in mechanical expandability, e.g. in mechanical, self- or balloon expandability
• CPC Class Codes: A61F 2002/30329 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2002/30484 Mechanically expandable devices located on the first prosthetic part for locking into or onto the second prosthetic part
• CPC Class Codes: A61F 2002/30485 plastically deformable
• CPC Class Codes: A61F 2002/30581 having a pocket filled with fluid, e.g. liquid
• CPC Class Codes: A61F 2002/30588 filled with solid particles
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30607 : Kits of prosthetic parts to be assembled in various combinations for forming different prostheses
• CPC Class Codes: A61F 2002/30616 : Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30624 : Hinged joint, e.g. with transverse axle restricting the movement
• CPC Class Codes: A61F 2002/443 : having two transversal endplates and at least one intermediate component
• CPC Class Codes: A61F 2002/448 : comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
• CPC Class Codes: A61F 2002/4485 : comprising three or more adjacent spinal implants
• CPC Class Codes: A61F 2002/4495 : having a fabric structure, e.g. made from wires or fibres
• CPC Class Codes: A61F 2002/4692 : fluid
• CPC Class Codes: A61F 2210/0061 : swellable
• CPC Class Codes: A61F 2250/0003 : having an inflatable pocket filled with fluid, e.g. liquid or gas

Abstract

A modular implant for performing an intervertebral fusion on adjacent vertebral bodies in a patient including a first spacer portion, a second spacer and a container having a first end and a second end, the first end of the container constructed to operably engage a first spacer and the second end of the container constructed to operably engage the second spacer.

Claims

1. An implant for performing an intervertebral fusion on adjacent vertebral bodies in a patient, and for being located entirely in a space between opposing end plates of the adjacent vertebral bodies, the implant comprising:

a non-threaded first intervertebral spacer body, defining a top side oriented to contact a first one of the opposing end plates when the implant is implanted in the space between opposing end plates and an opposing bottom side oriented to contact a second one of the opposing end plates when the implant is implanted in the space between opposing end plates;

a non-threaded second intervertebral spacer body; and

a porous and expandable enclosed container, the container having a first end and a longitudinally opposing second end,

wherein the first end of the container is coupled to the first intervertebral spacer body and the second end of the container is coupled to the second intervertebral spacer body, and

wherein the container is exposed between the first intervertebral spacer body and the second intervertebral spacer body to the opposing end plates when the implant is implanted in the space between opposing end plates.

2. The implant of claim 1, wherein the first and second intervertebral spacers each have a vertical height dimension defined between the opposing top and bottom sides such that each of the first and second intervertebral spacers can be implanted in a direction parallel to the opposing end plates.

3. The implant of claim 1, wherein at least one of the first intervertebral spacer body and the second intervertebral spacer body includes at least one fill opening that extends longitudinally through at least one of the first intervertebral spacer body and the second intervertebral spacer body.

4. The implant of claim 1, wherein at least one of the first and second intervertebral spacer bodies includes markings disposed on one of the top or bottom surfaces.

5. The implant of claim 4, wherein the markings project vertically outward to engage the surrounding anatomy.

6. The implant of claim 1, wherein at least one of the spacer bodies includes vertically facing outward projections to engage the surrounding anatomy.

7. The implant of claim 1, further including a connecting rod extending longitudinally between the first intervertebral spacer body and the second intervertebral spacer body, and passing through the container.

8. The implant of claim 7, wherein the connecting rod includes at least one fill opening in communication with an interior of the container.

9. The implant of claim 1, including an angulation feature.

10. The implant of claim 1 wherein the container is comprised of a conformable material.

11. The implant of claim 1, wherein the top side of the first intervertebral spacer body defines a textured surface that is oriented to engage one of the opposing end plates when implanted into the space between opposing end plates.

12. The implant of claim 1, wherein each of the first and second intervertebral spacer bodies define a non-circular outer perimeter in a cross-section taken perpendicular to their longitudinal axis.

13. An implant for performing an intervertebral fusion on adjacent vertebral bodies in a patient, wherein each of the adjacent vertebral bodies defines an end plate and wherein each of the end plates faces one another to define an intervertebral space therebetween, the implant comprising:

a first intervertebral spacer body having a longitudinal length dimension defined parallel to the end plates and a vertical height dimension perpendicular to the horizontal width dimension and normal to the end plates;

a second intervertebral spacer body having a longitudinal length dimension defined parallel to the end plates and a vertical height dimension perpendicular to the horizontal width dimension and normal to the end plates; and

a porous and expandable enclosed container, having a longitudinal length dimension defined parallel to the end plates,

wherein the longitudinal length dimension of the container is greater than the longitudinal length dimension of the first intervertebral spacer body and greater than the longitudinal length dimension of the second intervertebral spacer body,

wherein the first intervertebral spacer body is coupled to the first end of the container, and

wherein the second intervertebral spacer body is coupled to the second end of the container.

14. The implant of claim 13, further including a connecting rod extending horizontally between the first spacer body and the second spacer body, and passing through the enclosed container.

15. The implant of claim 14, wherein the connecting rod includes at least one fill opening in communication with an interior of the enclosed container.

16. The implant of claim 15, wherein at least one of the first intervertebral spacer body and the second intervertebral spacer body includes at least one fill opening that extends horizontally through at least one of the first intervertebral spacer body and the second intervertebral spacer body and that communicates with at least one fill opening of the connecting rod.

17. The implant of claim 14, wherein the connecting rod is rotationally rigid and secured to each of the first and second intervertebral spacer bodies such that the first intervertebral spacer body cannot rotate with respect to the second intervertebral spacer body about a longitudinal axis of the rod.

18. The implant of claim 14, wherein the connecting rod includes at least one fill opening in communication with an interior of the enclosed container.

19. The implant of claim 13, wherein the first spacer body includes a fill opening that extends longitudinally through the first intervertebral spacer body.

20. The implant of claim 19, wherein the second intervertebral spacer body includes a textured end plate contacting surface.

21. An implant for performing an intervertebral fusion on adjacent vertebral bodies in a patient, and for being located entirely in a space between opposing end plates of the adjacent vertebral bodies, the implant comprising:

a porous and expandable container including a first end, a second end and an enclosed interior space;

a first rigid and non-threaded intervertebral spacer body coupled to a first end of the container;

a second rigid and non-threaded intervertebral spacer body coupled to a second end of the container; and

a rod spanning between the first spacer body and the second spacer body, and extending through the container,

wherein the rod is disposed completely within the enclosed interior space of the container for an entire expanse between the first spacer body and the second spacer body,

wherein a fill opening is defined through the first spacer body which communicates with the rod, and

wherein the rod includes a fill channel that communicates with the fill opening and with the interior space of the container.

22. The implant of claim 21, wherein at least one of the first and second intervertebral spacer bodies defines a textured end plate contacting surface that is oriented to face at least one of the opposing end plates when implanted between the opposing end plates.