32 results about "Fetal heart rates" patented technology

Described herein are fetal and / or maternal monitoring devices, systems and methods using UWB medical radar. These devices and systems may include a UWB sensor providing high-resolution and reliable simultaneous monitoring of multiple indicators of fetal and / or maternal health, such as fetal heart rate, fetal heart rate variability, fetal respiration, fetal gross body movement, maternal contractions, maternal heart rate, maternal respiration, and other derivative parameters during virtually all stages of pregnancy and during delivery. The sensor allows novel collection of physiological data using a single sensor or multiple sensors to develop individual and aggregate normal motion indices for use in determining when departure from normal motion index is indicative of fetal or maternal distress.

A method, system, and computer program product are provide for, among other things, quantitative analysis of heart rate characteristics from fetal heart rate and cardiotocogram monitors that gives information about the well-being of the fetus and the risk of poor fetal outcome. The method comprises (a) continuously measuring fetal heart rate and cardiotocographic characteristics and (b) identifying at least one characteristic abnormality in the heart rate characteristics that is associated with fetal distress. Benefits are appreciated by the fetus and the mother and during the antepartum and intrapartum periods.

System (10) for extracting a fetal heart rate from at least one maternal signal using a computer processor(26). The system includes sensors(12-18)attached to a patient to receive abdominal ECG signals and a recorder and digitizer(20)to record and digitize each at least one maternal signal in a maternal signal buffer(22A-22D). The system further includes a peak detector(40)to identify candidate peaks in the maternal signal buffer. The signal stacker(42)of the system stacks the divides at least one maternal signal buffer into a plurality of snippets, each snippet including one candidate peak and a spatial filter(44)to identify and attenuate a maternal QRS signal in the plurality of snippets of the maternal signal buffer, the spatial filter including at least one of principal component analysis and orthogonal projection, to produce a raw fetal ECG signal which is stored in a raw fetal ECG buffer. The system further includes a fetal QRS identifier(46)for identifying peaks in the raw fetal ECG buffer by at least one of principal component analysis and a peak-detector followed by rule based fQRS extraction and a merger(48)to calculate and merge the fetal heart rate from the identified peaks.

Provided are an apparatus and method for receiving a fetal heart rate (FHR) signal at each interval during a monitoring period, receiving a uterine pressure (UP) signal at each of the intervals to obtain a plurality of FHR-UP signal pairs, and extracting a feature value for each FHR-UP signal pair, with the feature value being extracted from a predefined alphabet of feature values.

The invention is applicable to the field of remote medical treatment, and provides a fetus-voice meter for remote monitoring. The fetus-voice meter comprises a controller, an ultrasonic probe, an amplification filtering module, an audio output module, a recording start module, a fetal movement counting module, a wire communication module and a wireless communication module, wherein the recording start module is connected with the controller and used for controlling the starting of data recording; the fetal movement counting module is connected with the controller and used for recording the fetal movement number; and the wire communication module and the wireless communication module are connected with the controller respectively and used for outputting the fetal heart rate data recorded by the ultrasonic probe and the fetal movement number recorded by the fetal movement counting module. In the fetus-voice meter for remote monitoring provided by the invention, the recording start module controls the starting of the data recording, the fetal movement counting module records the fetal movement number, the data is transferred and output through wireless and wire communication modes, and a user can start the data recording without movement and can obtain stable and effective data through convenient operation.

The embodiment of the invention discloses a monitoring device for a fetal heart rate and relates to a monitoring technology of fetal heart. According to the monitoring device, the accuracy of monitoring the fetal heart rate can be improved. The monitoring device comprises a moving sheet, a permanent magnet, an elastic connecting part, a static sheet and an induction coil, wherein the permanent magnet is fixed on the moving sheet; the elastic connecting part is fixed between the moving sheet and the static sheet; the static sheet is fixed on the elastic connecting part; the induction coil is fixed on the lower surface of the static sheet and corresponds to the permanent magnet. The monitoring device disclosed by the invention is suitable for monitoring the fetal heart rate.

The invention discloses a fetal heart rate curve correction method. The fetal heart rate curve correction method is characterized by comprising the steps that the abnormal time period of a fetal heart rate curve is selected; fetal heart sounds during the time period are replayed; a fetal heart rate curve segment during the time period is corrected; an editable interface of the fetal heart rate curve segment during the time period is provided, manually edited fetal hear rate data during the time period is received, large sample data is collected at the cloud, and optimization learning is conducted on a correcting algorithm of the fetal heart rate curve segment by means of a big data analysis method. According to the fetal hear rate correction method, the editable interface of the fetal heart rate curve segment during the time period is provided, and medical personnel are assisted in conducting rapid correction on the fetal heart rate curve segment during the time period. In the diagnostic process of a case, diagnosis results are recorded and stored in the cloud, in turn, back feeding and optimization are conducted on the fetal heart rate curve segment correction algorithm by means of the large sample data, and the fetal heart rate curve correction algorithm can be perfected more persistently and comprehensively.

The invention relates to a method and device for adjusting a fetal heart and uterine contraction monitoring curve alarm range. The method for adjusting the fetal heart and uterine contraction monitoring curve alarm range comprises the following steps of: setting a fetal heart rate alarm range; judging whether the set fetal heart rate alarm range is the same as a default fetal heart rate alarm range or not; judging whether the set fetal heart rate alarm range is within the set safe fetal heart rate range of a system; automatically adjusting the fetal heart rate alarm range; and displaying the fetal heart rate alarm range and printing a fetal heart rate curve. The method and device for adjusting the fetal heart and uterine contraction monitoring curve alarm range has the advantages that theneeds of monitoring the fetal heart rate of a fetus at different periods in different areas can be satisfied, the risk caused by misoperation of a doctor during fetus monitoring is avoided and the reliability and the safety of the product are improved.

The invention relates to a method for printing a fetal heart rate curve. The method comprises the following steps of: acquiring pregnant woman information and characteristic parameters through a fetal heart rate monitoring device and storing the data in the fetal heart rate monitoring device respectively; acquiring a first fetal heart rate curve and independently and quickly printing the first fetal heart rate curve; and acquiring second fetal heart rate data after the first fetal heart rate curve is finished, forming a second fetal heart rate curve based on time scales and the pregnant womaninformation of the first fetal heart rate curve and quickly printing. The invention also relates to a device for printing the fetal heart rate curve. The method and the device for printing the fetal heart rate curve has the advantages that: because the fetal heart rate curves of twins are displayed, stored and independently and quickly printed under the same time coordinate, the same uterine contraction data and the same pregnant woman information, so a plurality of fetal heart rate curves are not overlapped and correspond to the scales on printing paper; and the method and the device are easy to operate.

The invention is suitable for the technical field of monitoring of fetal heart rate, and provides a method and a device for determining fetal heart rate and terminal equipment. The method comprises the following steps of respectively obtaining first fetal heart rate signal data and second fetal heart rate signal data via different sensors; determining a fetal electrocardio envelop signal accordingto the first fetal heart rate signal data, and determining a fetal ultrasonic envelop signal according to the second fetal heart rate signal data; according to the fetal electrocardio envelop signaland the fetal ultrasonic envelop signal, determining the fetal heart rate. The method has the advantage that the accuracy in determination of the fetal heart rate is improved.

The embodiment of the invention discloses a method for obtaining a fetal heart rate, relates to a fetal heart rate monitoring technology, and can reduce the time for obtaining the fetal heart rate and improve the efficiency of obtaining the fetal heart rate. The method for obtaining the fetal heart rate comprises the following steps: acquiring a fetal heart sound signal; converting the fetal heart sound signal into a binary sequence according to a preset binary conversion threshold value; traversing the binary sequence of each sampling period, and respectively calculating and values of the binary sequence of the sampling period and a binary sequence obtained after the binary sequence of the sampling period moves leftwards by m sampling periods; summing the calculated and values to obtain an autocorrelation value, and obtaining the fetal heart rate according to the autocorrelation value. The method is applicable to monitoring of the fetal heart rate.

The invention discloses a method and system for measuring and evaluating foetus state based on the area of a fetal heart rate deceleration zone. The method comprises the following steps of S1, performing pretreatment on a fetal heart rate curve; S2, recognizing and extracting a fetal heart rate baseline: (a) performing frequency analysis on the pretreated fetal heart rate curve, and selecting a reference line; (b) removing non-baseline fragments in the fetal heart rate curve, and performing interpolation repairing; (c) based on a statistics confidence interval, performing counting to obtain aninitial value B0 in a forward-backward filtering method; and (d) performing smoothing treatment on the fetal heart rate curve, and fitting the fetal heart rate baseline; S3, searching a fetal heart rate minimum value in the fetal heart rate curve, setting an iteration threshold, and recognizing the fetal heart rate deceleration zone in the fetal heart rate curve; S4, calculating out the area value of the fetal heart rate deceleration zone; and S5, setting an area threshold, comparing the area value of the fetal heart rate deceleration zone with the area threshold, and measuring and evaluatingthe foetus state. Through the adoption of the method disclosed by the invention, the border of the fetal heart rate deceleration zone can be accurately positioned, and the area of the fetal heart rate deceleration zone can be accurately calculated out to form a quantification standard for measuring the decelerating of the fetal heart rate, so that the method can be effectively applied to measuring and evaluating the foetus state.

The invention relates to a fetal heart simulating system and method. A control unit generates a control signal of simulating a fetal heart, a drive unit receives the control signal of the control unit and transmits the amplified control signal to a vibration unit, and the vibration unit generates vibration of simulating the fetal heart according to an electric signal of the drive unit. The fetal heart simulating method and system provided by the invention can be used for regulating and setting any frequency and amplitude of fetal heart rate for simulating; meanwhile, the control part and the simulating vibration part are integrated, therefore, the fetal heart simulating system is convenient for use.

The invention discloses a fetus voice meter. The fetus voice meter comprises a housing, a sound reception housing and a treatment module, wherein the housing is formed by the combination of an upper cover and a lower cover; the sound reception housing is placed in the housing, and is provided with an opening; the opening extends to the outer side of the housing; the inner wall of the sound reception housing is contracted and closed in the direction from the edge of the opening to the inner part of the housing; a sensor is arranged at the top of the sound reception housing, and communicates with an inner cavity of the sound reception housing; and the treatment module is fixed in the housing, and is used for converting a simulation signal received by the sensor into a digital signal, and then converting the digital signal into a sound frequency signal. According to the fetus voice meter disclosed by the invention, the sound reception housing structure cooperates with the sensor, so thatthe situation that ultrasonic waves are transmitted to a fetus is not needed; and the treatment module cooperates with the sensor to collect and analyze fetal heart rate and fetus movement data, and then transmit the fetal heart rate and the fetus movement data to far end equipment to be treated, so that the situation that the ultrasonic waves are directly aligned to the fetus is avoided, and theinfluence of radiation to a fetus is reduced.

The invention relates to the field of medical equipment detection, in particular to a fetal heart rate detecting system. The fetal heart rate detecting system comprises a fetal heart probe, a signal processing circuit, a converter circuit, a programmable logic device, a data processing module, a serial communication interface and a computer system in sequential connection, wherein one-way transmission is carried out among the fetal heart probe, the signal processing circuit and the converter circuit, and two-way data transmission is carried out among the converter circuit, the programmable logic device, the data processing module, the serial communication interface and the computer system. The fetal heart rate detecting system has the advantages that the multi-path extraction of fetal heart sound signals is realized, the fetal heart rate overturning phenomenon is overcome, and the accuracy, the real-time performance and the practicability of fetal heart rate calculation are improved, so the fetal heart rate can more accurately reflect the fetus condition, and the clinical value of fetal heart rate monitoring is improved.

The present invention proposes a fetal heart rate acquisition method and a fetal heart rate instrument, which relate to the field of medical devices and include the following steps: acquiring a Doppler ultrasonic signal; converting the Doppler ultrasonic signal into an audio signal; preprocessing the audio signal, Obtain an audio signal with a low sampling rate and low frequency; perform autocorrelation calculation and product term calculation on the preprocessed audio signal; the maximum value obtained in the autocorrelation calculation is the first main peak value, and the second maximum value is the second main peak value; Judging whether the first main peak value and the second main peak value have a multiple relationship; and further obtaining the fetal heart rate according to the judgment result. The present invention eliminates the problem of fetal heart rate calculation delay, can well solve the problem of halving and doubling the fetal heart rate, and can well meet the real-time requirement, which is more conducive to clinical diagnosis.

The invention belongs to the technical field of medical equipment, and particularly relates to a clinical fetal heart rate instrument for the obstetrics and gynecology. The clinical fetal heart rate instrument comprises a body, heart rate indicator lamps, a shell, an electrocardiogram detecting assembly, a fetal heart detecting head, a protective pad, a dustproof head, a cap, a connecting barrel,adjustment buttons and a display panel, wherein the heart rate indicator lamps are arranged on the two sides of the display panel, the shell is mounted on the outside of the body, the electrocardiogram detecting assembly is disposed on the body, the fetal heart detecting head is disposed at a lower portion of the connecting barrel, the cap is disposed between the protective pad and the dustproof head, the adjustment buttons are disposed on the right side of the body, and the display panel is arranged at the top of the body. Through the setting of the fetal heart detecting head and the electrocardiogram detecting assembly, the clinical fetal heart rate instrument is convenient for detection, fast in speed, flexible in use, safe, reliable and portable, thus the functional diversity is improved, the manufacturing cost is reduced, and the intelligence degree is improved.

The invention belongs to the field of fetal heart monitoring and provides a Doppler ultrasonographic device and a Doppler ultrasonographic method for detection of fetal heart signals. The device comprises a quincunx ultrasonic sensor probe, a fetal heart signal acquisition module and a signal parameter processing module. The quincunx ultrasonic sensor probe comprises a first wafer and a plurality of second wafers surrounding the first wafer; the first wafer is used for transmitting and receiving ultrasonic signals in fetal heart searching and detecting; the second wafers are used for transmitting and receiving ultrasonic signals in fetal heart searching. The fetal heart signal acquisition module is connected with the quincunx ultrasonic sensor probe and the signal parameter processing module and used for acquiring signals received by the first wafer and the second wafers. The signal parameter processing module is used for calculating, judging and comparing the acquired signals to obtain fetal heart signals. The Doppler ultrasonographic device has the advantages that due to the specific probe structure, the fetal heart signals can be detected quickly and accurately, and safety and convenience in use are achieved.