Ablation device with multiple ablation modes
First Claim
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1. A method for performing ablation therapy on the body of a patient, the method comprising:
- advancing an ablation device to a target body tissue region, the ablation device including an inflatable balloon coupled to an elongate shaft, a first electrode disposed within an interior space of the balloon, and a second electrode located outside of the balloon;
injecting an electrically conductive fluid into the interior section of the balloon and inflating the balloon from a collapsed state to an expanded state within the body;
selectively energizing the first electrode and generating a first RF electrical field within the balloon interior;
forming at least one ablation lesion within the body tissue using the first RF electrical field;
selectively energizing the second electrode and generating a second RF electrical field; and
forming at least one ablation lesion within the body tissue using the second RF electrical field.
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Abstract
Devices, systems, and methods for performing ablation therapy on body tissue are disclosed. An example ablation device for treating body tissue includes an ionically conductive balloon and a radio-frequency electrode that delivers RF energy into a distal section of the balloon. The balloon is configured to transmit the RF energy in a direction distally towards a leading end of the ablation device. Multiple ablation electrodes on the device can be used for providing lesions of different size or shape.
361 Citations
20 Claims
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1. A method for performing ablation therapy on the body of a patient, the method comprising:
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advancing an ablation device to a target body tissue region, the ablation device including an inflatable balloon coupled to an elongate shaft, a first electrode disposed within an interior space of the balloon, and a second electrode located outside of the balloon; injecting an electrically conductive fluid into the interior section of the balloon and inflating the balloon from a collapsed state to an expanded state within the body; selectively energizing the first electrode and generating a first RF electrical field within the balloon interior; forming at least one ablation lesion within the body tissue using the first RF electrical field; selectively energizing the second electrode and generating a second RF electrical field; and forming at least one ablation lesion within the body tissue using the second RF electrical field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for performing ablation therapy using an ablation device, the method comprising:
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advancing an ablation device to a tissue region in a body of a patient, the ablation device including an inflatable balloon coupled to a distal end of an elongate shaft, the inflatable balloon including a conductive section, a first electrode disposed within an interior space of the balloon and a second electrode located outside of the balloon; injecting an electrically conductive fluid into the balloon to inflate the balloon to an expanded state, wherein at least one of the conductive section and the second electrode contact the tissue region; and activating at least one of the first electrode and the second electrode to ablate at least a portion of the contacted tissue region. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for performing ablation therapy on the body of a patient, the method comprising:
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advancing an ablation device to a target body tissue region, the ablation device including an inflatable balloon coupled to a distal end of an elongate shaft, the inflatable balloon including a conductive section and a first electrode disposed within an interior space of the balloon; injecting an electrically conductive fluid into the balloon to inflate the balloon to an expanded state, wherein the conductive section of the balloon contacts a portion of the target body tissue region; and generating a current through the electrically conductive fluid using the first electrode to ablate a portion of the target body tissue region. - View Dependent Claims (19, 20)
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Specification