Electrical heating catheter
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United States of America Patent
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Jul 27, 1993
Issued Date -
N/A
app pub date -
Jun 4, 1992
filing date -
Nov 25, 1988
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention provides a thermal design of a catheter where the active electrode is partially covered by a heat conducting and electrically insulating heat-sink layer for localizing and controlling an electrical heating of tissue and cooling of the active electrode by convective blood flow. The invention further comprises a current equalizing coating for gradual transition of electrical properties at a boundary of a metallic active electrode and an insulating catheter tube. The current equalizing coating controls current density and the distribution of tissue heating.
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