49 results about "Fetal health" patented technology

A fetal monitoring device includes a piezofilm sheet, a first electrode, and a second electrode. A controller is operably connected to the piezofilm sheet, first electrode, and second electrode and receives a biopotential and a piezofilm signal. The controller derives at least one of a maternal heart rate and a uterine activity for the biopotential and derives at least one of a fetal heart rate and fetal motion detection from the piezofilm signal. The controller derives an index of fetal health and operate an indicator to present the derived index of fetal health.

A system for monitoring fetal wellbeing over time during pregnancy includes a sensor coupled to a pregnant woman; a processor communicatively coupled to the sensor; and a computer-readable medium having non-transitory, processor-executable instructions stored thereon. Execution of the instructions causes the processor to perform a method including: acquiring a signal from a sensor; processing thesignal to identify and extract a parameter of interest from the signal; and analyzing the parameter of interest to determine a degree of fetal wellbeing. The parameter of interest may include one or more of: an average fetal heart rate, an average fetal heart rate variability, a fetal kick or movement count, an average placental oxygenation level, an average placental temperature, an average placental pH, an average amount of amniotic fluid, a fetal heart rate profile, a fetal heart rate variability profile, and a fetal movement profile.

Methods and spectra for monitoring fetal growth and predicting birth weight of an infant prior to birth are provided wherein one or more selected biological markers are measured in a sample of amniotic fluid obtained from a pregnant woman. Levels of the selected biochemical markers and / or spectra correlate with one or more medical conditions, such as fetal growth and birth weight of the infant, and gestational diabetes. A measurement probe for in situ measurement can be used safely and repeatedly. Monitoring and / or treatment of maternal and fetal health is also provided.

A wearable sensor apparatus is disclosed that includes a flexible substrate adapted to be coupled with a skin surface of an expectant mother. A conductor is disposed on the flexible substrate. The conductor can include micron-scale invaginations. The conductor can be capable of repeatable variation in resistance when subject to a strain. Also disclosed is a system for monitoring the health of a fetus in utero that includes a wearable sensor apparatus. The wearable sensor apparatus is configured to output a signal responsive to an electrical input. The system includes a computing system with one or more hardware processors. The computing system is programmed to implement a signal processing module configured to access the output signal from the wearable strain gauge and generate an output indicative of health of the baby in utero. The output can be based in part on the received output signal and previously stored correlations between signal data from the wearable strain gauge and observations of the system or of the mother. A user interface module can be provided and can be configured to display an output indicative of health of the baby in utero.

The invention relates to a non-invasive fetal electrocardiogram detection device and a method for processing electrocardiographic signal data, including a front-end device for collecting electrocardiogram and a software system for analyzing and processing electrocardiographic signals. It specifically includes ECG collecting electrodes, analog-to-digital conversion module, wireless communication module, and core processor module. The signal obtained by the front end of the ECG acquisition is transmitted to the core processing module through the wireless communication module, and the steps of ECG signal quality evaluation, preprocessing, maternal ECG signal analysis and fetal ECG signal analysis and processing are completed, and the maternal and fetal ECG signal is obtained. Heart rate information, combined with waveform morphology analysis, is used to assess the health status of the mother and the status of the fetus in utero. The device can realize long-term, dynamic and real-time analysis and processing of fetal signals of pregnant women, and is of great significance for monitoring the health status of pregnant women and fetuses during pregnancy and childbirth.

A handheld device for fetal health monitoring is provided. The device comprises at least one sensor configured to detect fetal movement, and an ultrasound transducer unit configured to record a heartbeat sound of the fetus. The device further comprises a storage unit connectable to the at least one sensor and the ultrasound transducer unit and configured to store the detected fetal movement along with a timestamp and the heartbeat sound of the fetus in the form of digital information.

The invention discloses a fetal health monitor based on multi-channel passive signal collection, a reference signal collection device for collecting reference signals generated by pregnant women's heartbeat and breathing; a fetal signal collection device for collecting fetal signals; a hand-held control host computer for calculating Obtain the fetal heart rate; extract the reference signal S 0 According to the time-frequency characteristics, a band-pass filter is established to remove the interference signals generated by the pregnant woman's heartbeat and respiration, the threshold filtering method is used to remove the interference signals caused by the pregnant woman's physical activities in the fetal signal, and the fetal movement characteristics are extracted by cross-correlation analysis signal and calculate the number of fetal movements; realize the storage, filtering, feature extraction and analysis of reference signals and fetal signals, and display the monitored fetal heart rate and fetal movement times. The present invention can be worn on the body of a pregnant woman in a portable manner to realize high-precision fetal heart rate monitoring and fetal movement counting, and the pregnant woman can know the health status of the fetus at any time.

The invention discloses a method for extracting Doppler fetal heart sound signals on the basis of delay estimation. The method includes steps of acquiring abdominal ultrasonic Doppler echo signals of mothers; respectively acquiring delay estimation prior information of the Doppler fetal heart sound signals, uterus noise signals of the mothers and abdominal aorta sound signals of the mothers; performing k-level signal differential operation on the prior information; performing linear irrelevancy processing on the prior information; solving optimization problems to obtain weight vectors; respectively creating Vandermonde equation sets, solving the Vandermonde equation sets and determining delay of the various signals; acquiring delay of interference signals of the mothers; extracting Doppler fetal heart sound signals from the acquired signals by the aid of a single-channel blind separation process on the basis of oblique projection to acquire the pure Doppler fetal heart sound signals. The k is a positive integer. The method has the advantages that the method is applicable to extracting the Doppler fetal heart sound signals during fetal health condition examination, and the interference signals of the mothers can be effectively separated from the signals.