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US 2019/0314052 A1Published application
Method for ablating body tissue
AssigneeVrtronUS, Inc.
InventorsHira V. Thapliyal, David A. Gallup, James W. Arenson
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Abstract
A cardiac ablation method including the following steps: inserting a treatment catheter into an atrium of a heart, the treatment catheter including an ultrasound emitter; positioning the ultrasound emitter to face heart tissue within the left atrium outside of a pulmonary vein; emitting ultrasound energy from the ultrasound emitter while rotating the ultrasound emitter about a rotation axis; and ablating heart tissue with the ultrasound energy to form a lesion outside of a pulmonary vein.
Claims19
A tissue ablation system for creating a transmural lesion, the system comprising:
- an ablation catheter comprising a proximal portion, a distal portion, and an ultrasound transducer disposed within the distal portion and is adapted to direct a collimated beam of ultrasound energy to a target tissue,
- wherein the ultrasound transducer is adapted to operate in an ablation mode and a diagnostic mode,
- wherein, in the ablation mode, the collimated beam of ultrasound energy is adapted to create a lesion in the target tissue to thereby ablate the target tissue. And
- wherein, in the diagnostic mode, the ultrasound transducer is configured to act as a sensor to sense information about the target tissue based on a reflected ultrasound signal that is reflected back towards the ultrasound transducer by the target tissue;
- a control mechanism operably coupled to the ablation catheter and adapted to rotate, translate, or bend the distal potion of the ablation catheters in order to sweep the collimated beam of ultrasound energy along an ablation path;
- and
- a processor configured to adjust the sweep of the collimated beam of ultrasound energy based on the based on the sensed information to assure that the lesion is a transmural lesion.
4 more elements
Dependencies are inferred from the claim text.