Facet arthroplasty devices and methods

• US 20050027361A1
• Filed: 07/06/2004
• Published: 02/03/2005
• Est. Priority Date: 10/22/1999
• Status: Abandoned Application

• Current Assignee: Facet Solutions, Inc. (Globus Medical, Inc.)
• Original Assignee: Facet Solutions, Inc. (Globus Medical, Inc.)
• Inventors: Reiley, Mark A.
• Application Number:
  US10/885,891
• Publication Number:
  US 20050027361A1
• Time in Patent Office: Days
• US Class Current: 623/17.110
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/4405 for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes devices implanted between spinous or transverse processes A61B17/7062
• CPC Class Codes: A61F 2002/30387 Dovetail connection
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/305 Snap connection
• CPC Class Codes: A61F 2002/30537 adjustable
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30777 Oblong apertures
• CPC Class Codes: A61F 2002/30873 Threadings machined on non-cylindrical external surfaces
• CPC Class Codes: A61F 2002/449 comprising multiple spinal implants located in different intervertebral spaces or in different vertebrae
• CPC Class Codes: A61F 2002/4631 the prosthesis being specially adapted for being cemented
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0041 using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2250/0004 adjustable
• 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 2310/00131 Tantalum or Ta-based alloys
• CPC Class Codes: A61F 2310/00179 : Ceramics or ceramic-like structures
• CPC Class Codes: A61F 2310/00329 : Glasses, e.g. bioglass
• CPC Class Codes: A61F 2310/00604 : Coating made of aluminium oxide or hydroxides
• CPC Class Codes: A61F 2310/00634 : Coating made of zirconium oxide or hydroxides
• CPC Class Codes: A61F 2310/0097 : Coating or prosthesis-covering structure made of pharmaceutical products, e.g. antibiotics
• CPC Class Codes: A61F 2310/00976 : Coating or prosthesis-covering structure made of proteins or of polypeptides, e.g. of bone morphogenic proteins BMP or of transforming growth factors TGF

Abstract

A method of treating spine disease including the steps of removing at least a portion of a natural facet joint from a vertebral body; implanting an intervertebral disc prosthesis and replacing the portion of the natural facet joint with a facet joint prosthesis. The removed facet portion may be a cephalad or a caudal facet or both. The replacing step may include the step of attaching the facet joint prosthesis to the vertebral body, such as at or near a pedicle and/or spinous process. The invention also provides spinal prostheses to treat spine disease. The spinal prostheses include an intervertebral disc prosthesis and a facet joint prosthesis having artificial facet joint structure adapted and configured to replace a removed portion of the natural facet joint (cephalad, caudal or both).

Claims

1. A method of treating spine disease comprising:

removing at least a portion of a natural facet joint from a vertebral body;

implanting an intervertebral disc prosthesis; and

replacing the portion of the natural facet joint with a facet joint prosthesis.

2. The method of claim 1 wherein the removing step comprises removing at least a portion of a natural cephalad facet.

3. The method of claim 1 wherein the removing step comprises removing at least a portion of a natural caudal facet.

4. The method of claim 1 wherein the removing step comprises removing at least a portion of a natural caudal facet and at least a portion of a natural cephalad facet.

5. The method of claim 1 wherein the replacing step comprises attaching the facet joint prosthesis to the vertebral body.

6. The method of claim 5 wherein the attaching step comprises attaching the facet joint prosthesis to the vertebral body at or near a pedicle.

7. The method of claim 5 wherein the attaching step comprises attaching the facet joint prosthesis to a spinous process of the vertebral body.

8. The method of claim 1 wherein the implanting step is performed using a posterior approach.

9. The method of claim 1 wherein the implanting step is performed using a lateral approach.

10. The method of claim 1 wherein the implanting step is performed using an anterior approach.

11. Spinal prostheses to treat spine disease comprising:

an intervertebral disc prosthesis; and

a facet joint prosthesis comprising artificial facet joint structure adapted and configured to replace a removed portion of a natural facet joint.

13. The prostheses of claim 11 wherein the artificial facet joint structure comprises a caudal prosthesis adapted and configured to replace a removed natural caudal facet.

14. The prostheses of claim 11 wherein the artificial facet joint structure comprises a fixation member adapted and configured to attach the facet joint prosthesis to a vertebral body.

15. The prostheses of claim 11 further comprising a kit containing the intervertebral disc prosthesis and the facet joint prosthesis.

16. The prostheses of claim 11 wherein the intervertebral disc prosthesis is adapted for implantation via a posterior approach.

17. The prostheses of claim 11 wherein the intervertebral disc prosthesis is adapted for implantation via a lateral approach.

18. The prostheses of claim 11 wherein the intervertebral disc prosthesis is adapted for implantation via an anterior approach.

12. The prostheses of claim 111 wherein the artificial facet joint structure comprises a cephalad prosthesis adapted and configured to replace a removed natural cephalad facet.