SYSTEMS AND METHODS OF PHOTODYNAMIC-BASED CARDIAC ABLATION VIA THE ESOPHAGUS
First Claim
1. A system for photodynamic ablation of cardiac tissue via an esophagus, comprising:
- an ablation catheter having an expandable distal end for securing the ablation catheter in the esophagus, the distal end containing at least one light source operable to activate a photodynamic substance delivered to the target area of the cardiac tissue to be ablated and form a lesion;
at least one feedback device contained in the distal end of the ablation catheter, the at least one feedback device providing feedback for at least one of;
positioning a distal end of an ablation catheter in a desired position in the esophagus adjacent a target area of the cardiac tissue to be ablated, assessing tissue contact, forming an adequate lesion, and assessing lesion formation.
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Accused Products
Abstract
Systems and methods for photodynamic ablation of cardiac tissue via an esophagus are disclosed. An exemplary system includes an ablation catheter having an expandable distal end for securing the ablation catheter in the esophagus. The distal end of the ablation catheter contains at least one light source operable to activate a photodynamic substance delivered to the target area of the cardiac tissue to be ablated and form a lesion. The system also includes at least one feedback device contained in the distal end of the ablation catheter. The at least one feedback device provides feedback for at least one of: positioning a distal end of an ablation catheter in a desired position in the esophagus adjacent a target area of the cardiac tissue to be ablated, forming an adequate lesion, and assessing lesion formation.
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Citations
27 Claims
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1. A system for photodynamic ablation of cardiac tissue via an esophagus, comprising:
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an ablation catheter having an expandable distal end for securing the ablation catheter in the esophagus, the distal end containing at least one light source operable to activate a photodynamic substance delivered to the target area of the cardiac tissue to be ablated and form a lesion; at least one feedback device contained in the distal end of the ablation catheter, the at least one feedback device providing feedback for at least one of;
positioning a distal end of an ablation catheter in a desired position in the esophagus adjacent a target area of the cardiac tissue to be ablated, assessing tissue contact, forming an adequate lesion, and assessing lesion formation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for photodynamic ablation of cardiac tissue via an esophagus, comprising:
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means for securing an ablation catheter in the esophagus; means for providing feedback for positioning a distal end of the ablation catheter in a desired position in the esophagus adjacent a target area of the cardiac tissue to be ablated; means for providing feedback for forming an adequate lesion means for activating a photodynamic substance from the ablation catheter and delivered to the target area of the cardiac tissue to be ablated to form a lesion; and means for providing feedback for assessing lesion formation. - View Dependent Claims (13)
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14. A method for photodynamic ablation of cardiac tissue via an esophagus, comprising:
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providing feedback for positioning a distal end of an ablation catheter in a desired position in the esophagus adjacent a target area of the cardiac tissue to be ablated; and securing the distal end of the ablation catheter in the esophagus in the desired position in the esophagus, and then actuating a light source in the ablation catheter to activate a photodynamic substance delivered to the target area of the cardiac tissue to be ablated. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification