Intelligent fetal heart sound monitoring instrument and monitoring method

Abstract

The invention discloses an intelligent fetal heart sound monitor, which belongs to the fetal heart sound monitoring technology, and comprises a conical shell with openings at both ends; a cover body sealingly connected with the smaller opening end of the shell; sensor; and a differential system; the sound sensor includes a first collection end face and a second collection end face, the first collection end face is set in contact with the inner wall of the housing, and the differential system is configured to collect the first collection end face and the second collection end face The fetal heart sound signal is differentially processed. In the present invention, the first collection end face and the second collection end face for collecting fetal heart sound signals are reversely arranged on the sound sensor, so that the interference sound signals collected by the first collection end face and the second collection end face are equivalent, while the first The fetal heart sound signal collected by the acquisition end surface is much larger than the fetal heart sound signal collected by the second acquisition end surface, and then through the differential processing of the differential system, the fetal heart sound signal with a higher signal-to-noise ratio is obtained, which improves the fetal heart sound signal acquisition. accuracy.

Description

technical field [0001] The invention relates to fetal heart sound monitoring technology, in particular to an intelligent fetal heart sound monitor and a monitoring method. Background technique [0002] Fetal heart sounds contain rich physiological information and are one of the important indicators for judging the health status of the fetus. During pregnancy, if the fetus has abnormal conditions in the uterus, it will be stunted or even fetal asphyxia. Therefore, it is necessary to continuously monitor the fetal heart sound. On the one hand, it can be used to judge the growth status of the fetus, and on the other hand, it can also prevent fetal accidents. [0003] At present, there are two main types of fetal heart sound monitoring technology: [0004] Doppler ultrasonic fetal heart sound detector, most of the medical equipment in medical institutions adopts this technology to monitor fetal heart sound by using the Doppler effect of ultrasonic signals. However, this type ...

AI Technical Summary

Problems solved by technology

However, this type of equipment is usually bulky and expensive, and requires personnel with professional operating skills to complete the measurement, and ultrasonic radiation has a certain impact on the human body, so it is not suitable for long-term monitoring

[0005] Passive fetal heart sound monitor, this type of equipment realizes heart sound monitoring by capturing fetal heart sound audio signals. Conventional passive fetal heart sound monitors often use a set of stethoscopes with a bell-shaped stethoscope head. , low accuracy

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