Methods for imaging and ablating body tissue
First Claim
1. A method for creating a transmural lesion in tissue, the method comprising:
- positioning a distal portion of a catheter near the tissue, wherein an ultrasound transducer is attached to the distal portion and is operatively coupled to a console and processor;
imaging the tissue by energizing the ultrasound transducer at a first power level to produce an ultrasound beam, wherein the imaging determines a thickness of the tissue, and a gap distance between the ultrasound transducer and the tissue;
ablating the tissue by energizing the ultrasound transducer at a second power level to produce the ultrasound beam; and
controlling energy delivered to the tissue during the ablating, using the processor, wherein the processor adjusts a speed of the ultrasound beam moving across the tissue based on the thickness and gap distance, to create the transmural lesion.
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Abstract
A method for creating a transmural lesion in tissue includes positioning a distal portion of a catheter near the tissue, where an ultrasound transducer is attached to the distal portion and is operatively coupled to a console and processor. The tissue is imaged by energizing the ultrasound transducer at a first power level to produce an ultrasound beam, where the imaging determines a thickness of the tissue, and a gap distance between the ultrasound transducer and the tissue. The tissue is ablated by energizing the ultrasound transducer at a second power level to produce the ultrasound beam. Energy delivered to the tissue during the ablating is controlled, using the processor, where the processor adjusts a speed of the ultrasound beam moving across the tissue based on the thickness and gap distance, to create the transmural lesion.
160 Citations
21 Claims
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1. A method for creating a transmural lesion in tissue, the method comprising:
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positioning a distal portion of a catheter near the tissue, wherein an ultrasound transducer is attached to the distal portion and is operatively coupled to a console and processor; imaging the tissue by energizing the ultrasound transducer at a first power level to produce an ultrasound beam, wherein the imaging determines a thickness of the tissue, and a gap distance between the ultrasound transducer and the tissue; ablating the tissue by energizing the ultrasound transducer at a second power level to produce the ultrasound beam; and controlling energy delivered to the tissue during the ablating, using the processor, wherein the processor adjusts a speed of the ultrasound beam moving across the tissue based on the thickness and gap distance, to create the transmural lesion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification