Ablation catheter
First Claim
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1. A method of ablating cardiac tissue of a patient the method comprising:
- advancing an ablation catheter into contact with a target tissue in the patient'"'"'s heart, the ablation catheter comprising a plurality of electrodes in electrical communication with an RF generator having a user interface;
placing an indifferent electrode in contact with the patient;
selecting a first energy delivery mode from the user interface;
delivering RF energy to at least one of the electrodes of the ablation catheter in the first energy delivery mode to ablate the target tissue;
assessing the condition of the target tissue;
selecting a second energy delivery mode from the user interface that is different than the first energy delivery mode; and
delivering RF energy to at least one of the electrodes of the ablation catheter in the second energy delivery mode to ablate the target tissue,wherein the selecting step comprises selecting from the group consisting of a monopolar only energy delivery mode, a bipolar only delivery mode, and a combined bipolar/monopolar energy delivery mode.
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Abstract
Devices, systems and methods are disclosed for the ablation of tissue. Embodiments include an ablation catheter which has an array of ablation elements attached to a deployable carrier assembly. The carrier assembly can be constrained within the lumen of a catheter, and deployed to take on an expanded condition.
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Citations
10 Claims
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1. A method of ablating cardiac tissue of a patient the method comprising:
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advancing an ablation catheter into contact with a target tissue in the patient'"'"'s heart, the ablation catheter comprising a plurality of electrodes in electrical communication with an RF generator having a user interface; placing an indifferent electrode in contact with the patient; selecting a first energy delivery mode from the user interface; delivering RF energy to at least one of the electrodes of the ablation catheter in the first energy delivery mode to ablate the target tissue; assessing the condition of the target tissue; selecting a second energy delivery mode from the user interface that is different than the first energy delivery mode; and delivering RF energy to at least one of the electrodes of the ablation catheter in the second energy delivery mode to ablate the target tissue, wherein the selecting step comprises selecting from the group consisting of a monopolar only energy delivery mode, a bipolar only delivery mode, and a combined bipolar/monopolar energy delivery mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of ablating cardiac tissue of a patient, the method comprising:
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delivering RF energy in monopolar only energy delivery mode to target tissue for a first period of time to ablate the target tissue; delivering RF energy in bipolar only energy delivery mode to target tissue for a second period of time to ablate the target tissue; and delivering no energy to the target tissue for a third period of time, the first, second, and third periods of time being approximately the same.
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10. A method of ablating cardiac tissue of a patient, the method comprising:
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delivering RF energy in a first energy delivery mode to target tissue for a first period of time to ablate the target tissue; delivering RF energy in a second energy delivery mode to target tissue for a second period of time to ablate the target tissue; and delivering no energy to the target tissue for a third period of time, the first, second, and third periods of time being approximately the same and one of the first and second energy delivery modes being a combination of monopolar and bipolar energy delivery modes.
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Specification