A fetal heart rate monitor, also known as a fetal heart monitor, is a medical device designed based on the Doppler principle, primarily used for home monitoring of the fetal heartbeat. This device acquires fetal cardiac motion information through the pregnant woman's abdominal wall, recording fetal heart rate and fetal movement data and generating monitoring curves. It is suitable for pregnant women over 16 weeks of gestation, with the recommended examination time being 15-28 weeks. Its ultrasound output intensity is ≤5mW/cm², meeting safety standards such as GB9706.1, and is powered by two AAA batteries or a USB interface.
The device consists of sensors, amplifiers, and a display unit, with the core component using a PZT piezoelectric ceramic ultrasonic transducer. It features portability, ease of operation, and high sensitivity, displaying heart rate, fetal movement count, and uterine contraction monitoring data. It supports data storage and Bluetooth/Wi-Fi transmission. Clinical applications include prenatal examinations, high-risk pregnancy management, and fetal distress monitoring. When using this device, attention should be paid to the probe placement and ambient temperature (5-40℃) and humidity (≤80%). Abnormal fetal heart rates require immediate contact with a medical professional.
