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US 11,896,779 B2Granted
MRI compatible ablation catheter system incorporating directional high-intensity ultrasound for treatment
AssigneeAcoustic Medsystems, Inc.
InventorsEverette C. Burdette, Bruce M. Komadina, Emery M. Williams
Life of this patent
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Abstract
A magnetic resonance compatible catheter. The catheter incorporates directional high intensity ultrasound. The catheter may include imaging coils visible through magnetic resonance imaging. The location and placement of the catheter may be controlled by steering wires within lumen in the catheter guided by the location information from the magnetic resonance imaging.
Claims19
A catheter device for treating tissue with ultrasound 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;
- and
- a first radiofrequency (RF) tracking coil integrated within the inner catheter;
- and
- a first plurality of lumens;
- and
- an outer catheter around the inner catheter, the outer catheter concentric with the inner catheter and comprising:
- at least two guide wires disposed within the outer catheter;
- 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.
9 more elements
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.
13 more elements
Dependencies are inferred from the claim text.