Temperature indicator and insulator for powered surgical instruments
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United States of America Patent
Stats
-
Sep 7, 2004
Grant Date -
Feb 20, 2003
app pub date -
Aug 16, 2001
filing date -
Aug 16, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A temperature sensing device for attachment to a powered surgical instrument operating a workpiece such as a bur. The device is a thermochromic element which may be embodied as a paint or a thermal insulating device. The device embodiment is in the form of a thermoplastic, elastomeric material which changes color at a predetermined temperature and is formed in a shape adapted to enable the device to be affixed to the distal end of the instrument, adjacent the collet connecting the workpiece to the instrument. The device is attached in a contiguous manner so frictional heat generated by moving parts of the instrument may be conducted through contiguous surfaces of the instrument and the device. The thermochromic element provides a visual indication of the temperature of a portion of the instrument when the temperature exceeds a predetermined level.
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