US2005137706A1PendingUtilityA1

Facet arthroplasty devices and methods

52
Priority: Oct 22, 1999Filed: Sep 23, 2004Published: Jun 23, 2005
Est. expiryOct 22, 2019(expired)· nominal 20-yr term from priority
Inventors:Mark A. Reiley
A61F 2002/30873A61B 17/1671A61F 2220/0025A61F 2310/00017A61F 2002/30433A61B 17/86A61F 2002/30537A61F 2220/0041A61F 2310/00976A61F 2310/00329A61F 2310/00023Y10S623/902A61F 2002/305A61F 2002/30387A61F 2310/0097Y10S606/902A61F 2/28Y10S606/907A61F 2/4405A61F 2002/4631A61B 17/7068A61F 2310/00634A61F 2250/0004A61F 2310/00604Y10S606/91A61B 17/8605A61F 2002/30604A61F 2002/30777A61B 17/7064A61F 2310/00179A61F 2002/449A61F 2310/00029A61F 2310/00131
52
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Claims

Abstract

Devices and surgical methods treat various types of adult spinal pathologies, such as degenerative spondylolisthesis, spinal stenosis, degenerative lumbar scoliosis, and kypho-scoliosis. Various types of spinal joint replacement prostheses, surgical procedures for performing spinal joint replacements, and surgical instruments are used to perform the surgical procedures.

Claims

exact text as granted — not AI-modified
1 - 7 . (canceled)  
     
     
         8 . A prosthesis to replace a cephalad portion of a left natural facet joint on a vertebral body and a cephalad portion of a right natural facet joint on the vertebral body, the prosthesis comprising: 
 left and right prosthesis bodies accommodating fixation to the vertebral body at or near respective left and right pedicles without support of a lamina;    an artificial left facet joint structure on the left prosthesis body adapted and configured to replace a cephalad portion of the left natural facet joint; and    an artificial right facet joint structure on the right side region prosthesis body adapted; and configured to replace a cephalad portion of the right natural facet joint,    the prosthesis further including a third artificial facet joint structure on one of the left and right prosthesis bodies superior to the respective one of the artificial left or right facet joint structures adapted and configured to replace a caudal portion of a natural facet joint formed by a vertebral body.    
     
     
         9 . A prosthesis according to  claim 8  wherein the third artificial facet joint structure includes means for replacing a caudal portion of a natural facet joint after removal of the caudal portion of the natural facet joint from the vertebral body.  
     
     
         10 - 11 . (canceled)  
     
     
         12 . A prosthesis according to  claim 8  wherein the third artificial facet joint structure includes means for replacing a caudal portion of a natural facet joint after removal of at least a portion of a mamillary process, or an accessory process, or part of a transverse process, or part of a pedicle from the vertebral body.  
     
     
         13 - 31 . (canceled)

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