MULTIPOLARITY EPICARDIAL RADIOFREQUENCY ABLATION
First Claim
Patent Images
1. A method of treating a tissue region, comprising:
- positioning a first, second, and third electrode in proximity to the tissue region, the second and third electrodes positioned on opposite sides of the first electrode;
ablating at least a portion of the tissue region by conducting an electrical current between the first electrode and a ground electrode spaced from the tissue region; and
ablating at least a portion of the tissue region by conducting an electrical current between the second electrode and the third electrode.
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Abstract
A method of ablating an epicardial tissue region, including positioning a medical device adjacent the epicardial tissue region, the medical device having a first electrode, a second electrode, and a third electrode located in between the first and second electrodes; delivering an irrigation fluid to the tissue region; and ablating at least a portion of the tissue region by sequentially activating the third electrode in a monopolar radiofrequency delivery mode and activating the first and second electrodes in a bipolar radiofrequency delivery mode.
202 Citations
24 Claims
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1. A method of treating a tissue region, comprising:
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positioning a first, second, and third electrode in proximity to the tissue region, the second and third electrodes positioned on opposite sides of the first electrode; ablating at least a portion of the tissue region by conducting an electrical current between the first electrode and a ground electrode spaced from the tissue region; and ablating at least a portion of the tissue region by conducting an electrical current between the second electrode and the third electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of ablating an epicardial tissue region, comprising:
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positioning a medical device adjacent the epicardial tissue region, the medical device having a first electrode, a second electrode, and a third electrode located substantially between the first and second electrodes; ablating at least a portion of the tissue region by conducting a radiofrequency signal between the third electrode and a return electrode located away from the epicardial tissue region; and ablating at least a portion of the tissue region by conducting a radiofrequency signal between the first and second electrodes. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of ablating an epicardial tissue region, comprising:
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positioning a medical device adjacent the epicardial tissue region, the medical device having a first electrode, a second electrode, and a third electrode located in between the first and second electrodes; delivering an irrigation fluid to the tissue region; and ablating at least a portion of the tissue region by sequentially activating the third electrode in a monopolar radiofrequency delivery mode and activating the first and second electrodes in a bipolar radiofrequency delivery mode. - View Dependent Claims (21)
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22. A method of treating tissue, comprising:
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ablating a first tissue region with a first portion of a medical device; and ablating a second tissue region with a second portion of the medical device, the second region substantially surrounding the first tissue region. - View Dependent Claims (23, 24)
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Specification