System and methods for locating and ablating arrhythomogenic tissues
First Claim
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1. A catheter for sensing electrical events about a selected annulus region of the heart and for treating tissue in the selected annulus region, comprising:
- a handle assembly;
a shaft having a proximal end coupled to the handle assembly, and a distal end, the shaft extending along an axis;
a first expandable member provided at the distal end;
a second expandable member positioned adjacent to, but spaced apart from, the first expandable member, the second expandable member having an ablation element; and
means for providing ablation energy to the ablation element.
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Abstract
A catheter for sensing electrical events about a selected annulus region of the heart and for treating tissue in the selected annulus region has a handle assembly, a shaft having a proximal end coupled to the handle assembly, a first expandable member provided at the distal end of the shaft, and a second expandable member positioned adjacent to, but spaced apart from, the first expandable member. The second expandable member has an ablation element that emits energy to a radially surrounding area to ablate tissue.
49 Citations
20 Claims
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1. A catheter for sensing electrical events about a selected annulus region of the heart and for treating tissue in the selected annulus region, comprising:
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a handle assembly;
a shaft having a proximal end coupled to the handle assembly, and a distal end, the shaft extending along an axis;
a first expandable member provided at the distal end;
a second expandable member positioned adjacent to, but spaced apart from, the first expandable member, the second expandable member having an ablation element; and
means for providing ablation energy to the ablation element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of ablating tissue in a body cavity, comprising:
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providing a catheter having a shaft having a proximal end and a distal end, with the distal end of the shaft having an anchoring element and an ablation element that is separate from the mapping element;
positioning the anchoring element at the desired treatment location in the body cavity, including injecting contrast medium to the distal end of the catheter; and
actuating the ablation element to ablate the desired treatment location. - View Dependent Claims (14, 15, 16)
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17. A system for sensing electrical events about a selected annulus region of the heart and for treating tissue in the selected annulus region, comprising:
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(a) a first catheter having;
a handle assembly;
a shaft having a proximal end coupled to the handle assembly, and a distal end, the shaft extending along an axis;
an ablation element provided adjacent the distal end of the shaft; and
an expandable member provided next to the ablation element;
(b) a second catheter having;
a handle assembly;
a shaft having a proximal end coupled to the handle assembly of the second catheter, and a distal end, the shaft of the second catheter extending along an axis; and
a distal ring provided at the distal end of the shaft of the second catheter and oriented perpendicular to the axis of the shaft of the second catheter, the distal ring having a plurality of electrodes positioned in spaced-apart manner about the distal ring of the second catheter;
(c) an energy source coupled to the ablation element; and
(d) means coupled to the plurality of electrodes for processing electrical signals received from the plurality of electrodes. - View Dependent Claims (18)
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19. A catheter for sensing electrical events about a selected annulus region of the heart and for treating tissue in the selected annulus region, comprising:
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a handle assembly;
a shaft having a proximal end coupled to the handle assembly, and a distal end, the shaft extending along an axis;
a first expandable member provided at the distal end;
a second expandable member positioned adjacent to, but spaced apart from, the first expandable member, the second expandable member having an ablation element; and
means for introducing a guidewire to the distal end. - View Dependent Claims (20)
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Specification