Device and method for measuring elasticity of a human or...

A - Human Necessities – 61 – B

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A61B 8/08 (2006.01) A61B 8/00 (2006.01)

Patent

CA 2494828

The invention concerns a device for measuring elasticity of a human or animal organ, particularly the liver, or more generally all viscoelastic media delivering an ultrasonic signal after ultrasonic illumination, comprising at least a probe including an ultrasonic transducer (2), at least one position sensor, an actuator for triggering said device, wire-connected to an electric power supply. The invention is characterized in that it comprises an automatically controlled electrodynamic actuator, fixed to the ultrasonic transducer (2), capable of generating a transient low frequency mechanical stress having a frequency range between 1 Hz and 5000 Hz. The invention also concerns a method for calculating elasticity using said device.

La présente invention concerne un dispositif pour la mesure de l'élasticité d'un organe humain ou animal, notamment d'un foie, ou plus généralement tous milieux viscoélastiques présentant un signal ultrasonore après illumination ultrasonore, comprenant au moins un palpeur comportant un transducteur ultrasonore (2), au moins un capteur de position, un actionneur pour le déclenchement dudit dispositif, relié par liaison filaire à une source d'énergie électrique, caractérisé en ce qu'il comprend un actionneur électrodynamique asservi, fixé au transducteur ultrasonore (2), apte à générer un coup basse fréquence transitoire présentant une gamme de fréquence comprise entre 1 Hz et 5000 Hz. Elle concerne également un procédé pour le calcul d'une élasticité au moyen du susdit dispositif.

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