INTERVERTEBRAL IMPLANT

• US 20110301709A1
• Filed: 06/03/2010
• Published: 12/08/2011
• Est. Priority Date: 06/03/2010
• Status: Abandoned Application

• Current Assignee: Henning Kloss, Kilian Kraus
• Original Assignee: Henning Kloss, Kilian Kraus
• Inventors: Kraus, Kilian, Kloss, Henning
• Application Number:
  US12/793,311
• Publication Number:
  US 20110301709A1
• Time in Patent Office: Days
• US Class Current: 623/17.11
• CPC Class Codes: A61F 2/4465 having a circular or kidney shaped cross-section substantially perpendicular to the axis of the spine
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/30143 hexagonal
• CPC Class Codes: A61F 2002/302 toroidal, e.g. rings
• CPC Class Codes: A61F 2002/30594 slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
• CPC Class Codes: A61F 2002/30617 Visible markings for adjusting, locating or measuring
• CPC Class Codes: A61F 2002/30769 madreporic
• CPC Class Codes: A61F 2002/30904 serrated profile, i.e. saw-toothed
• CPC Class Codes: A61F 2002/3092 having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/3093 for promoting ingrowth of bone tissue
• CPC Class Codes: A61F 2002/3097 using laser
• CPC Class Codes: A61F 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00047 Aluminium or Al-based alloys
• CPC Class Codes: A61F 2310/00089 Zirconium or Zr-based alloys
• CPC Class Codes: A61F 2310/00095 Niobium or Nb-based alloys
• CPC Class Codes: A61F 2310/00125 Hafnium or Hf-based alloys
• CPC Class Codes: A61F 2310/00131 Tantalum or Ta-based alloys
• CPC Class Codes: A61F 2310/00149 : Platinum or Pt-based alloys
• CPC Class Codes: A61F 2310/00155 : Gold or Au-based alloys

Abstract

The embodiments herein are directed to bone-joining or bone-bridging intervertebral implants with an inner channel-type structure of channels, which extend from a bone contacting-surface of the implant to the inside of the implant, whereby the vertical channels are connected by horizontal channels which allow a X-ray beam to go through the implant by passing through a horizontal channel.

Claims

1. An intervertebral implant comprising a metal or metal alloy or PEEK, wherein the implant has two surfaces for contacting two vertebral bodies, an outer sheath and an inner structure and wherein the inner structure is formed by a plurality of channels and the channels each have a cross-sectional area of 8,000 μ

m² to 7,000,000 μ

m² and the channels extend parallel to one another along the longitudinal axis of the spinal column and the channels are connected by openings to each other.

2. The intervertebral implant according to claim 1, wherein the channels have a cross-sectional area of 50,000 μ

m² to 3,100,000 μ

m².

3. The intervertebral implant according to claim 1, wherein the channels have a diameter of 100 μ

m to 3,000 μ

m.

4. The intervertebral implant according to claim 1, wherein the channels have a diameter of 250 μ

m to 2,000 μ

m.

5. The intervertebral implant according to claim 1, wherein the bone-contacting surface of the inner structure is convex.

6. The intervertebral implant according to claim 1, wherein the channels extend continuously from one bone-contacting surface to the opposite surface.

7. The intervertebral implant according to claim 1, wherein the implant has at least 100 channels per cm² of bone-contacting surface.

8. The intervertebral implant according to claim 1, wherein each channel is connected with at least two openings with the adjacent channels.

9. The intervertebral implant according to claim 1, wherein the openings are point-shaped, punctiform, circular, cylindrical, oval or wedge-shaped.

10. The intervertebral implant according to claim 8, wherein the openings extend continuously from one bone-contacting surface to the opposite surface in the form of cuts.

11. The intervertebral implant according to claim 9, wherein the openings extend continuously from one bone-contacting surface to the opposite surface in the form of cuts.

12. The intervertebral implant according to claim 10, wherein the openings are located either only in the lateral areas or only in the anterior-posterior areas of the channel walls.

13. The intervertebral implant according to claim 11, wherein the openings are located either only in the lateral areas or only in the anterior-posterior areas of the channel walls.

14. The intervertebral implant according to claim 1, wherein the channels are shaped round, oval, triangular, square, pentagonal or hexagonal.

15. The intervertebral implant according to claim 1, wherein the channels do not change their radius or diameter during the course.

17. The intervertebral implant according to claim 1, wherein the openings occur in the form of drill-holes vertical to the longitudinal axis of the channels through the implant.

18. The intervertebral implant according to claim 1, wherein the openings run through the outer wall of the implant in the direction of the opposite surface, thereby linking the channels on this line with each other.

19. The intervertebral implant according to claim 1, wherein the inner structure of the implant permits micro-movements due to wedge-shaped or oblique openings in the form of longitudinal cuts along the channel wall.

20. The intervertebral implant according to claim 1, wherein the implant is selected from the group including cervical cages, thoracic cages, lumbar cages, artificial intervertebral discs and implants for the fusion of vertebrae.

16. (canceled)