Intervertebral spinal implant

Patent metadata

Field	Value
Publication number	US-10517739-B2
Application number	US-201815973788-A
Country	US
Kind code	B2
Filing date	May 8, 2018
Priority date	May 8, 2018
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

An intervertebral implant for implantation in an intervertebral space between vertebrae. The implant includes a body extending from an upper surface to a lower surface. The body has a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear walls such that an interior chamber is defined within the front and rear ends and the first and second walls. The body defines an outer perimeter and an inner perimeter extending about the internal chamber. At least one of the side walls is defined by a solid support structure and an integral porous structure, the porous structure extending from the outer perimeter to the inner perimeter. The porous structure embeds or encapsulates at least a portion of the solid support structure.

First claim

What is claimed is:

1. A transforaminal lumbar intervertebral implant for implantation in an intervertebral space between vertebrae, the implant comprising:
a body having a front end, a rear end and opposed side walls extending between the ends, the body having an outer perimeter and an inner perimeter about an internal chamber, the body comprising:
an upper surface and a lower surface, the upper surface defined by a solid upper outer rim and a spaced apart solid upper inner rim and the lower surface defined by a solid lower outer rim and a spaced apart solid lower inner rim;
a solid front wall extending at the front end between at least the solid upper outer rim and the solid lower outer rim;
a solid rear wall extending at the rear end between at least the solid upper outer rim and the solid lower outer rim;
each of the side walls including at least one solid cross strut extending between the solid upper rims and at least one solid cross strut extending between the solid lower rims, wherein each solid cross strut has an associated curved contoured portion;
each of the side walls including an outer solid support structure extending along the outer perimeter between the upper outer rim and the lower outer rim and an inner solid support structure extending along the inner perimeter between the upper inner rim and the lower inner rim, each side wall substantially free of solid structure between the inner and outer solid support structures; and
a porous structure integrally formed with the solid upper rims, the solid lower rims, each of the solid cross struts, and each of the solid support structures in each of the side walls, the porous structure extending from the body outer perimeter to the body inner perimeter, and
wherein each solid cross strut and associated curved contoured portion define a contour of a surface serration.

2. The intervertebral implant of claim 1 , wherein surface serrations are defined along the upper and lower surfaces along the rear end.

3. The intervertebral implant of claim 1 , wherein each solid support structure is defined by a radial strut.

4. The intervertebral implant of claim 3 , wherein each of the radial struts includes a central portion about an opening and legs which extend from the central portion to one of the upper or lower rims.

5. The intervertebral implant of claim 4 , wherein a connecting ring extends from the central portion of the outer solid support structure to the central portion of the inner solid support structure of the respective wall.

6. The intervertebral implant of claim 1 , wherein a plurality of internal struts extend within each wall between the respective outer solid support structure and the inner solid support structure.

7. The intervertebral implant of claim 6 , wherein the internal struts are embedded within the porous structure.

8. The intervertebral implant of claim 1 , wherein the rear wall defines opposed slots along the outer surfaces thereof.

9. The intervertebral implant of claim 8 , wherein a through bore is defined in the rear end between the opposed slots.

10. The intervertebral implant of claim 1 , wherein the solid rear wall includes recesses along the upper and lower surfaces in which porous structure is formed.

11. The intervertebral implant of claim 1 , wherein porous structure extends between adjacent cross struts.

12. An intervertebral implant for implantation in an intervertebral space between vertebrae, wherein said implant comprises:
a body having a front end, a rear end and opposed side walls extending between the ends, the body having an outer perimeter and an inner perimeter about an internal chamber, the body having a generally rectangular configuration and the internal chamber having a length from front to rear greater than width between the side walls, the body comprising:
an upper surface and a lower surface, the upper surface defined by a solid upper outer rim and a spaced apart solid upper inner rim and the lower surface defined by a solid lower outer rim and a spaced apart solid lower inner rim;
a solid front wall extending at the front end between at least the solid upper outer rim and the solid lower outer rim;
a solid rear wall extending at the rear end between at least the solid upper outer rim and the solid lower outer rim;
each of the side walls including at least one solid support structure extending between the upper and lower surfaces; and
a porous structure integrally formed with the solid upper rims, the solid lower rims and the at least one solid support structure in each of the side walls, the porous structure extending from the body outer perimeter to the body inner perimeter, the solid upper and lower outer rims and the solid front and rear walls extending along the outer perimeter such that the porous structure is encased within solid structure,
wherein the upper surface and lower surface comprise surface serrations, and wherein a contour of each surface serration is defined by a solid cross strut and a curved contoured portion.

13. The intervertebral implant of claim 12 , wherein the solid support structure includes the cross struts associated with the surface serrations, wherein one or more of the solid cross struts extend between the solid upper rim members and one or more of the solid cross struts extend between the solid lower rim members.

14. The intervertebral implant of claim 12 , wherein the solid support structure includes a plurality of struts extending between the upper and lower rims and encased within the porous structure.

15. The intervertebral implant of claim 14 , wherein each of the plurality of struts has an X-shape.

16. The intervertebral implant of claim 15 , wherein a plate extends within each wall and interconnects each of the X-shaped struts at a midpoint thereof.

17. The intervertebral implant of claim 12 , wherein the solid support structure in each side wall includes an outer solid support structure extending along the outer perimeter between the upper outer rim and the lower outer rim and an inner solid support structure extending along the inner perimeter between the upper inner rim and the lower inner rim.

18. The intervertebral implant of claim 17 , wherein each outer and inner solid support structure is defined by a radial strut including a central portion about an opening and legs which extend from the central portion to one of the upper or lower rims.

19. An intervertebral implant for implantation in an intervertebral space between vertebrae, wherein said implant comprises:
a body extending from an upper surface to a lower surface, the body having a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear ends such that an interior chamber is defined within the front and rear ends and the first and second walls, the body defining an outer perimeter and an inner perimeter extending about the internal chamber,
wherein at least one of the walls is defined by a solid support structure and an integral porous structure, the solid support structure including an outer solid support structure extending along the outer perimeter between the upper outer rim and the lower outer rim and an inner solid support structure extending along the inner perimeter between the upper inner rim and the lower inner rim, the porous structure extending from the outer perimeter to the inner perimeter and from the upper surface to the lower surface,
wherein the upper surface and lower surface comprise surface serrations, and wherein a contour of each surface serrat

Assignees

• Globus Medical Inc

Inventors

• Ryan Robert

Classifications

• A61F2002/30904

  serrated profile, i.e. saw-toothed · CPC title

• A61F2002/308

  oblong · CPC title

• A61F2/30749

  Fixation appliances for connecting prostheses to the body · CPC title

• A61F2002/30593

  hollow · CPC title

• A61F2002/3097

  using laser · CPC title