Spinal implant with bone engaging projections

• US 20120191188A1
• Filed: 01/20/2011
• Published: 07/26/2012
• Est. Priority Date: 01/20/2011
• Status: Abandoned Application

• Current Assignee: Claire Chen
• Original Assignee: Claire Chen
• Inventors: Huang, Meng-Feng
• Application Number:
  US13/009,851
• Publication Number:
  US 20120191188A1
• Time in Patent Office: Days
• US Class Current: 623/17.11
• CPC Class Codes: A61F 2/30965 Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
• CPC Class Codes: A61F 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2002/30563 having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
• CPC Class Codes: A61F 2002/30785 parallel
• CPC Class Codes: A61F 2002/30789 perpendicular with respect to each other
• CPC Class Codes: A61F 2002/30904 serrated profile, i.e. saw-toothed
• CPC Class Codes: A61F 2002/30911 having a honeycomb structure
• CPC Class Codes: A61F 2002/30971 Laminates, i.e. layered products
• 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 2310/00161 Carbon; Graphite
• CPC Class Codes: A61F 2310/00203 containing alumina or aluminium oxide
• CPC Class Codes: A61F 2310/00293 containing a phosphorus-containing compound, e.g. apatite
• CPC Class Codes: A61F 2310/00329 Glasses, e.g. bioglass

Abstract

A spinal implant in one embodiment includes an implant for insertion between two opposite spaced vertebrae of a spine, comprising a body having a substantially rectangular cross section and comprising a toothed top retaining member, a toothed bottom retaining member, and a peripheral surface; a three-dimensional matrix structure formed in the body and on the peripheral surface as support; and a plurality of holes formed through at least one of three directions of the three-dimensional matrix structure.

Claims

1. An implant for insertion between two opposite spaced vertebrae of a spine, comprising:

a body having a substantially rectangular cross section and comprising a toothed top retaining member, a toothed bottom retaining member, and a peripheral surface;

a three-dimensional matrix structure formed in the body and on the peripheral surface as support; and

a plurality of holes formed through at least one of three directions of the three-dimensional matrix structure.

2. The spinal implant of claim 1, wherein the holes are formed through one transverse direction of the three directions of the three-dimensional matrix structure.

3. The spinal implant of claim 1, wherein the holes are formed through two transverse directions of the three directions of the three-dimensional matrix structure.

4. The spinal implant of claim 1, wherein the holes are formed through each of the three directions of the three-dimensional matrix structure.

5. The spinal implant of claim 1, wherein the holes occupy about 1% to 90% of a volume of the body, and wherein each hole has a bore of about 150 μ

m to 1,000 μ

m.

6. An implant for insertion between two opposite spaced vertebrae of a spine, comprising:

a body having a substantially rectangular cross section and comprising a toothed top retaining member, a toothed bottom retaining member, and a peripheral surface;

a three-dimensional matrix structure formed in the body and on the peripheral surface as support;

a plurality of holes formed through at least one of three directions of the three-dimensional matrix structure; and

a longitudinal channel formed in a central portion of the body and communicating with the holes.

7. The spinal implant of claim 6, wherein the holes are formed through one transverse direction of the three directions of the three-dimensional matrix structure.

8. The spinal implant of claim 6, wherein the holes are formed through two transverse directions of the three directions of the three-dimensional matrix structure.

9. The spinal implant of claim 6, wherein the holes are formed through each of the three directions of the three-dimensional matrix structure.

10. The spinal implant of claim 6, wherein the holes occupy about 1% to 90% of a volume of the body, and wherein each hole has a bore of about 150 μ

m to 1,000 μ

m.