ULTRASONIC DOPPLER SENSOR FOR OBSTERIC TOCOMONITOR

摘要

PURPOSE:To provide the title sensor rich in flexibility, easy in molding processing and capable of being formed into various shapes and to obtain the optimum heart beat data over a wide range, by widening the areas of ultrasonic wave transmitting and receiving parts using a polymer piezoelectric element and collecting the heart beat data of an embryo without altering the position of the sensor even when the embryo moves. CONSTITUTION:An ultrasonic Doppler sensor 1 uses a polymer piezoelectric element 4 having flexibility in order to widen the areas of ultrasonic wave transmitting and receiving parts 2, 3. Since the ultrasonic Dopper sensor 1 has a large area and flexibility, when said sensor is once mounted to the abdominal wall surface 13 of the mother in a close contact state, the heart beat data of an embryo 14 can be collected stably for a long time without altering the position of the sensor 1.