Catheters with fluorescent temperature sensors
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United States of America Patent
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-
May 10, 2005
Grant Date -
Sep 5, 2002
app pub date -
Jan 9, 2002
filing date -
Mar 1, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A catheter with a fluorescent temperature sensor is shown and described. The catheter includes a lumen, a fiber-optic cable that extends through the lumen. A distal end of the fiber-optic cable is coated with a fluorescent material and a proximal end of the fiber-optic cable is connected to a console. The console includes a light source for transmitting light through the fiber-optic cable for exciting the fluorescent material. The console further includes a photo multiplier tube for converting light emitted by the excited fluorescent material to a plurality of analog voltage signals. The console further includes a digital oscilloscope linked to the photo multiplier tube for converting the plurality of analog voltage signals to at least one digital signal. The console further includes a processor linked to the digital oscilloscope for converting the at least one digital signal to a temperature value for the distal end of the fiber-optic cable.
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