Transesophageal ultrasound using a narrow probe

A - Human Necessities – 61 – B

Patent

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A61B 8/12 (2006.01)

Patent

CA 2545846

Transesophageal echocardiography is implemented using a miniature transversely oriented transducer that is preferably small enough to fit in a 7.5 mm diameter probe, and most preferably small enough to fit in a 5 mm diameter probe. Signal processing techniques improve the depth of penetration to the point where the complete trans-gastric short axis view of the left ventricle can be obtained, despite the fact that the transducer is so small. The reduced diameter of the probe (as compared to prior art probes) reduces risks to patients, reduces or eliminates the need for anesthesia, and permits long term direct-visualization monitoring of patients~ cardiac function.

L'invention porte sur une échographie transoesophagienne mise en oeuvre au moyen d'un transducteur à orientation transversale miniature qui est, de préférence, assez petit pour s'adapter à une sonde d'un diamètre de 7.5 mm, et préférablement, assez petit pour s'adapter à une sonde d'un diamètre de 5 mm. Des techniques de traitement de signaux permettent d'améliorer la profondeur de pénétration jusqu'au point où une vue axiale courte transgastrique totale du ventricule gauche peut être obtenue, en dépit du fait que le transducteur soit si petit. Le diamètre réduit de la sonde (comparé aux sondes de la technique antérieure) permet de réduire les risques des patients, de réduire ou du supprimer le besoin d'anesthésie, et de surveiller la visualisation directe sur le long terme de la fonction cardiaque des patients.

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