PIEZOELECTRIC TRANSDUCER OF ULTRASONIC DIAGNOSTIC PROBE Russian patent published in 2005 - IPC

FIELD: ultrasonic diagnostics; piezoelectric transducers for univariate medical probes (echoencephalographs, ocular ultrasonographs).

SUBSTANCE: proposed piezoelectric transducer has piezoceramic strip inserted in acoustic isolation bushing, and also damper holding different-size particles distributed along damper axis in compliance with their size. In addition it has flat inductance coil installed on acoustic isolation bushing on side opposing piezoceramic strip. Different-size particles of damper are, essentially, mixture of piezoceramic powder and granules made of piezoceramic powder. Non-hardening material is used as binder. Inner surface of acoustic isolation bushing is covered with magnetostrictive metal layer.

EFFECT: enhanced attenuation factor, sensitivity, and shielding reliability, facilitated manufacture.

3 cl, 1 dwg