Phased array ultrasound system and method for cardiac ablation
November 6, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesHigh speed adaptive ultrasonic phased array imaging system Electronically-controlled variable focus ultrasound hyperthermia system Supersonic hyperthermia treating method Aberration correction using beam data from a phased array ultrasonic scanner Methods for the diagnosis and ablation treatment of ventricular tachycardia Deflectable loop electrode array mapping and ablation catheter for cardiac chambers Apparatus and method for intra-cardiac ablation of arrhythmias Shock wave curing apparatus capable of correcting phase shifts contained in echo signals Phase aberration correction in phased-array imaging systems Ablation of blood thrombi by means of acoustic energy Patent #: 5524620 InventorsApplicationNo. 554134 filed on 11/06/1995US Classes:600/439, With therapeutic device600/463, With acoustical or display imaging601/3HyperthermiaExaminersPrimary: Jaworski, Francis J.Attorney, Agent or FirmInternational ClassA61B 008/00AbstractAn ultrasound system and method for performing relatively non-invasive cardiac ablation on a patient. The system of the present invention includes a plurality of ultrasound transducers forming a phased array that is to be located externally of the patient. The array a focused beam of sufficient energy to ablate a predetermined cardiac tissue volume. The system is capable of refocusing the beam so that acoustical aberrations encountered by the beam, as it is transmitted through inhomogeneous body tissues between the array and the treatment volume, are taken into account and will not impede operation of the system. To refocus the beam, the system includes a senor which senses the phase distribution caused by the aberrations allowing a controller to calculate a compensating driving phase distribution and accordingly drive the array. The system also allows for real time correction of the beam's position enabling the beam to follow a moving myocardial target volume.Other References
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