Catheter system having a ball electrode and methods thereof
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United States of America Patent
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May 1, 2001
Grant Date -
N/A
app pub date -
Nov 27, 1998
filing date -
Jun 2, 1997
priority date (Note) -
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Abstract
An improved catheter system having at least one electrode at its tip section can be used in ablating the arrhythmogenic point of a patient. A catheter suitable for radiofrequency ablation of cardiac tissues comprises a catheter shaft having a distal section, a distal end, a proximal end and at least one lumen extending therebetween, wherein a rotatable movable ball electrode is disposed at the tip section of said catheter. In one embodiment, the ablation catheter has a temperature sensor and a closed-loop temperature control mechanism. In another embodiment, the ablation catheter has fluid infusion and irrigation means at its distal tip section for creating a deep and large lesion by applying radiofrequency energy and cooled fluid to said rotatable movable ball electrode.
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