Surgical Instrument Calibration
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United States of America Patent
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N/A
Issued Date -
Jul 2, 2009
app pub date -
Sep 27, 2006
filing date -
Sep 28, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A rotationally symmetric surgical instrument for use with a computer aided surgery system which is adapted so that it is easy to check its calibration and methods of checking the calibration of such instruments are described. The instrument includes a body having a working end which includes a working point which characterises the location in space of the working end. The instrument also has a location at which a marker can be attached to the instrument. Only a single formation is located toward the working end which provides a calibration reference point for engaging with a trackable instrument. The single formation has a fixed position relative to the working point. The position of the calibration reference point relative to the marker array can be determined so as to check whether the calibration of the instrument is still accurate.
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