HYBRID ultrasonic transmitter receiver for noninvasive measurement of blood flow velocity

摘要

The invention relates to medical diagnostics. The proposed hybrid ultrasonic transmitter-receiver for noninvasive Doppler measurements of blood flow velocity comprises a cylindrical body with a dielectric end wall designed to contact with the skin, and placed in a housing: a transmitter based on the plate of piezoelectric ceramics and the receiver based film pezopolimera adjacently arranged, the end surfaces of each and another gap between 0.5-5 mm, and a transmitter and a receiver are glued to the inner flat surfaces of the dielectric end Art APIS body transmitting ultrasonic waves with frequencies of 1-10 MHz. The technical result is less demanding of accuracy of positioning of the ultrasonic transmitter and enhancing the accuracy of measurement of blood flow velocity or providing measurement capabilities during long-term ( 1 hours) measurements.