System and method for energy delivery to tissue while monitoring position, lesion depth, and wall motion
First Claim
1. A method for ablating tissue, said method comprising:
- providing an elongate shaft having an ultrasound transducer adjacent a distal portion thereof;
positioning the ultrasound transducer adjacent a target tissue;
moving the ultrasound transducer over a surface of the target tissue;
sensing the target tissue with the ultrasound transducer;
calculating a motion of the target tissue relative to the ultrasound transducer;
measuring a distance between the ultrasound transducer and the surface of the target tissue;
generating a map of the surface of the target tissue based on the measured distance;
ablating the target tissue with a beam of ultrasound energy; and
adjusting the ablation based on the calculated motion and measured distance to form a continuous lesion in the target tissue.
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Accused Products
Abstract
Systems and methods for ablating tissue include an ablation device having an energy source and a sensor. The energy source provides a beam of energy directable to target tissue, and the sensor senses energy reflected back from the target tissue. The sensor collects various information from the target tissue in order to facilitate adjustment of ablation operating parameters, such as changing power or position of the energy beam. Gap distance between the energy source and target tissue, energy beam incident angle, tissue motion, tissue type, lesion depth, etc. are examples of some of the information that may be collected during the ablation process and used to help control ablation of the tissue.
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Citations
20 Claims
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1. A method for ablating tissue, said method comprising:
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providing an elongate shaft having an ultrasound transducer adjacent a distal portion thereof; positioning the ultrasound transducer adjacent a target tissue; moving the ultrasound transducer over a surface of the target tissue; sensing the target tissue with the ultrasound transducer; calculating a motion of the target tissue relative to the ultrasound transducer; measuring a distance between the ultrasound transducer and the surface of the target tissue; generating a map of the surface of the target tissue based on the measured distance; ablating the target tissue with a beam of ultrasound energy; and adjusting the ablation based on the calculated motion and measured distance to form a continuous lesion in the target tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification