US2008091268A1PendingUtilityA1

Facet arthroplasty devices and methods

61
Assignee: ARCHUS ORTHOPEDICS INCPriority: Oct 22, 1999Filed: Nov 13, 2007Published: Apr 17, 2008
Est. expiryOct 22, 2019(expired)· nominal 20-yr term from priority
Inventors:Mark A. Reiley
A61F 2002/30873A61F 2250/0004A61F 2310/00976Y10S606/91A61B 17/7068A61F 2310/0097A61F 2310/00634A61F 2310/00329A61F 2002/30777A61F 2310/00029A61F 2002/305A61F 2002/30537A61F 2220/0025A61B 17/8605A61F 2/28A61F 2310/00023A61F 2220/0041A61F 2310/00179A61F 2002/30604Y10S623/902A61F 2/4405A61B 17/1671A61F 2002/4631Y10S606/902A61F 2002/30387A61F 2310/00131A61B 17/86Y10S606/907A61F 2002/449A61F 2310/00017A61F 2002/30433A61F 2310/00604A61B 17/7064
61
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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 . A facet joint prosthesis for replacing a natural facet joint comprising first and second facets, the prosthesis comprising: a) a superior facet joint component having a superior outer surface adapted to attach to a superior facet, b) an inferior facet joint component having an inferior outer surface adapted to attach to an inferior facet, and c) a ligament adapted to constrain relative movement between the facets.  
     
     
         2 . The prosthesis of  claim 1  wherein the superior and inferior components are integral.  
     
     
         3 . The prosthesis of  claim 1  wherein the superior and inferior components are not integral.  
     
     
         4 . The prosthesis of  claim 1  wherein the ligament comprises a first attachment end portion adapted to attach to a first portion of the superior facet joint component.  
     
     
         5 . The prosthesis of  claim 1  wherein the ligament comprises a first attachment end portion adapted to attach to a natural vertebra.  
     
     
         6 . The prosthesis of  claim 1  wherein the ligament comprises a first attachment end portion adapted to attach to the first facet.  
     
     
         7 . The prosthesis of  claim 1  wherein the ligament comprises a first attachment end portion adapted to attach to an anchor adapted to attach to a natural vertebra.  
     
     
         8 . The prosthesis of  claim 8  wherein the anchor is a pedicle screw.  
     
     
         9 . The prosthesis of  claim 1  adapted to limit extension.  
     
     
         10 . The prosthesis of  claim 1  adapted to limit axial compression.  
     
     
         11 . The prosthesis of  claim 1  adapted to limit flexion.  
     
     
         12 . The prosthesis of  claim 1  wherein at least one of the superior or the inferior components has a convex articulating surface.  
     
     
         13 . The prosthesis of  claim 1  wherein at least one of the superior and inferior components has a conforming articulating surface.  
     
     
         14 . The prosthesis of  claim 1  wherein the ligament has a flexible portion.  
     
     
         15 . The prosthesis of  claim 14  wherein the flexible portion is curved.  
     
     
         16 . The prosthesis of  claim 1  wherein the ligament is inflexible.

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