Thermometric cardiac tissue ablation electrode with ultra-sensitive temperature detection
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United States of America Patent
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Oct 30, 1990
Grant Date -
N/A
app pub date -
Nov 4, 1988
filing date -
Nov 4, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to the construction of a cardiac ablation electrode with a thermosensing detector at one or more positions in the distal tip. The distal tip is uninsulated in contrast to the rest of the flexible length of the electrode to enable radiofrequency (rf) potential to be applied there. This rf potential causes heating of cardiac tissue when the catheter electrode is inserted into the heart via venus pathways. A thermocouple sensor is embedded in the electrode tip with the detection wires running along the catheter to external apparatus for measurement to application of radiofrequency. The thermocouple sensor is integral and at the surface of the distal electrodes for true surface temperature recording with fast response.
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