Facet joint prosthesis measurement and implant tools
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United States of America Patent
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-
Nov 6, 2007
Grant Date -
Aug 17, 2006
app pub date -
Mar 31, 2006
filing date -
Apr 22, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides tools and methods designed to aid in the placement of facet joint prostheses at virtually all spinal levels. One aspect of the present invention is a measurement tool for installing a cephalad facet joint prosthesis including a fixation measurement element and a support arm element. This measurement tool assists in the selection and/or configuration of a cephalad facet joint prosthesis for implantation in a patient. Another aspect is a measurement tool for installing a caudal facet joint prosthesis including a stem element and a trial caudal bearing surface element. This measurement tool assists in the selection and/or configuration of a caudal facet joint prosthesis for implantation in a patient. Yet another aspect is a measurement tool holder including a measurement surface connected to a holder element. This tool holder assists in determining the measurements obtained with the caudal facet joint prosthesis measurement tool.
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