Resonance ultrasonic transducer

A - Human Necessities – 61 – B

Patent

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Details

A61B 8/00 (2006.01) A61N 7/00 (2006.01) G01N 29/24 (2006.01)

Patent

CA 2661998

A resonance ultrasonic transducer comprises an ultrasound source (1) for transmitting ultrasound, and a reflecting unit (2) disposed opposite to the ultrasound source (1). The ultrasound source (1) and the reflecting unit (2) constitute a resonance cavity. The reflecting unit (2) may also act as an ultrasound source. A specific distribution of the acoustic field may be formed in the resonance cavity by means of matching the transmitting acoustic field of one ultrasonic transducer with the reflecting acoustic field of the other ultrasonic transducer. The resonance ultrasonic transducer may find a wide application in devices of ultrasonic diagnosis, ultrasonic therapy, and ultrasonic detection, which carries out effective focusing and controlling of the ultrasonic field.

L'invention concerne un transducteur ultrasonore à résonance comprenant une source d'ultrasons (1), et une unité réfléchissante (2) placée à l'opposé de la source d'ultrasons (1). La source d'ultrasons et l'unité réfléchissante (2) constituent une cavité de résonance. L'unité réfléchissante (2) peut également agir comme source d'ultrasons. On peut créer une distribution spécifique du champ acoustique dans la cavité de résonance en faisant correspondre le champ acoustique d'émission du transducteur ultrasonore avec le champ acoustique de réflexion de l'autre transducteur ultrasonore. Ce transducteur ultrasonore à résonance trouve application, de manière large, dans les dispositifs de diagnostic par ultrasons, les traitements par ultrasons, et la détection par ultrasons, permettant une mise au point et une commande efficaces du champ ultrasonore.

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