Patent ID: 11896779
Assignee: ACOUSTIC MEDSYSTEMS, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 15:
16. A method for ablating myocardium to treat cardiac rhythm conditions comprising:
positioning, in proximity to myocardium, via transarterial, endovenous, transseptal atrial, or transaortic endoventricular access, a catheter device, the catheter device comprising:
an inner catheter comprising:
an ultrasonic transducer mounted on a rigid platform disposed within the inner catheter at a distal end of the catheter device defining a catheter device tip;
a first radiofrequency (RF) tracking coil integrated within the inner catheter; and
a first plurality of lumens; and

an outer catheter surrounding the inner catheter, the outer catheter concentric with the inner catheter and comprising:
at least two guide wires;
a second RF tracking coil integrated within the outer catheter provided at a location proximal the ultrasonic transducer relative to the first RF tracking coil; and
a second plurality of lumens;

determining a position and an orientation of the catheter device, using the RF tracking coils, the RF tracking coils providing a real time localized signal;
guiding the catheter device, using the at least two guide wires, based upon the position and the orientation of the catheter device, to a portion of a ventricular wall defining a treatment zone of the myocardium; and
rotating and directing the catheter device tip to point the ultrasonic transducer at the treatment zone, transmitting high-intensity ultrasound energy to selectively target and ablate the treatment zone under magnetic resonance (MR) guidance.