Loop electrode array mapping and ablation catheter for cardiac chambers
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
May 6, 1996
filing date -
Feb 24, 1992
priority date (Note) -
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Abstract
A cardiac arrhythmia mapping and ablation catheter has a main catheter that is provided with a loop-shaped mapping and ablation system attached to its distal end in which the loop is optionally adjustable or of relatively fixed shape resumable upon deployment. The loop carries an electrode array including a plurality of separately operable recording (mapping)/ablation electrodes in conductive relation to the external environment and arranged in spaced serial relation along the loop. Insulated conductors connect the electrodes electrically with input/output devices outside the catheter for mapping the electrical activity of the chamber wall contacted and ablating tissue as indicated. A distal extension or guide member may optionally be provided to adapt the loop specifically to addressing the tricuspid annulus or other desired location.
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