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US 7,290,347 B2Granted
Facet joint prosthesis measurement and implant tools
AssigneeArchus Orthopedics, Inc.
InventorsTeena M. Augostino, Richard J. Broman, Leonard Tokish, Jr.
Life of this patent
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AssigneeArchus Orthopedics, Inc.
InventorsTeena M. Augostino, Richard J. Broman, Leonard Tokish, Jr.
Estimating the term…
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.
A facet joint prosthesis measurement system comprising a measurement tool adapted and configured to determine a characteristic of a facet joint prosthesis, the tool comprising a stem element and a trial bearing element, the system further comprising a measurement tool holder adapted and configured to provide a measurement between the stem element and the trial bearing element.
A facet joint prosthesis measurement tool holder comprising a measurement surface connected to a holder element adapted and configured to hold a facet joint prosthesis measurement tool, wherein the holder element is adapted and configured to permit measurement of an angle between a stem element and a trial bearing element of the facet joint prosthesis measurement tool.
A facet joint prosthesis measurement tool holder comprising a measurement surface connected to a holder element adapted and configured to hold a facet joint prosthesis measurement tool, wherein the measurement surface has markings to permit measurement of an angle between a stem element and a bearing element of the facet joint prosthesis measurement tool.
Dependencies are inferred from the claim text.