PULSE WAVE TRANSDUCER Russian patent published in 1995 - IPC

FIELD: medical engineering. SUBSTANCE: this transducer is provided with diaphragm which divides its inner space into two halves each of which has respective opening in wall. Diaphragm is kinematically connected to transducer. Openings are hermetically sealed by flexible plugs. Both portions of transducer housing inner space are filled with liquid. Diaphragm may be made in the form of flat piezotransducer. Inner cavities of housing communicate with one another via relief valve. EFFECT: higher sensitivity and noise-proofness of transducer. 3 cl, 3 dwg