149 results about "Fetal heart monitoring" patented technology

The invention discloses an algorithm for automatically recognizing a fetal heart rate baseline. The algorithm comprises the following steps: S1, collecting fetal heart rate signals; S2, performing curve optimization to the collected fetal heart rate signals; S3, performing feature extraction to the fetal heart rate signal curve after optimization, and clustering the extracted feature points into two feature parts through a clustering analysis algorithm; S4 distinguishing the two feature parts into a baseline part and a non-baseline part according to the distinguishing conditions; and S5, performing smooth filtering to the recognized baseline part to obtain the final estimated fetal heart rate baseline. The algorithm for automatically recognizing the fetal heart rate baseline can determine the fetal heart rate baseline more accurately by combining the fetal movement information particularly under the condition of close results of clustering, provide more intelligent and more reliable fetal heart monitoring results for clinic, and can be widely applied to the fields of biomedical signal processing, artificial intelligence and electronic fetal monitoring.

The invention provides an array fetal heart monitoring abdominal bandage based on a piezoelectric film sensor and relates to the field of monitoring on the heart of a fetus. The invention is used for solving the problems of serious error, 'invasion type' monitoring manner and low accuracy caused in the fact that a fetal heart sound stethoscope, an ultrasonic Doppler fetal heart sound instrument and a single sensor are used for fetal heart monitoring in the prior art. Magic pastes are respectively arranged at the two end parts of the abdominal bandage, and a piezoelectric film sensor array is arranged at the middle part of the abdominal bandage; a detection circuit is arranged on the abdominal bandage; and the detection circuit is composed of a preposed differential amplifying circuit, a filter circuit, an analog/digital conversion circuit, a DSP (digital signal processing) module, a storage module and an interface module. The adopted piezoelectric film sensor has the advantages of high response speed, high flexibility and good linearity, and high detection accuracy can be guaranteed; and the piezoelectric film sensor is light, soft and durable, so that the piezoelectric film sensor can be in fit with a human body well after being embedded into the abdominal bandage and a man-machine effect is good.

The present invention provides a method and apparatus for monitoring the fetal condition in an objective, quantitative, and non-invasive manner by enabling continuous and highly specific data collection during pre-natal development and the intra-partum period. In an embodiment, monitoring the fetal condition comprises monitoring a fetal heart rate, a fetal heart rate variability, and/or the fetal heart vector orientation of a fetus in a pregnant mother. Automated signal processing techniques are applied to a multiplicity of transducers to select an optimum signal vector to monitor at least one of a fetal heart rate, a fetal heart rate variability, and/or the fetal heart vector orientation of a fetus in a pregnant mother.

An apparatus for detecting a fetal heartbeat includes circuitry to convert acoustic energy representative principally of a maternal heartbeat into a first electrical signal and circuitry to convert acoustic energy representative of a maternal heartbeat and a fetal heartbeat into a second electrical signal. The apparatus also includes circuitry to process the first and second electrical to provide an electrical signal principally representative of the fetal heartbeat and circuitry to determine pitch periods of the signal principally representative of the fetal heart beat.

The invention relates to a method for improving fetal heart Doppler signal acquisition quality during fetal movement. The method comprises the following steps: in set time of a fetal heart monitoring process, performing calculation or processing on envelopes of acquired fetal movement Doppler signals, so as to obtain fetal movement characteristic values which represent the fetal movement condition; comparing the obtained fetal movement characteristic values with the size of preset fetal movement thresholds; if the fetal movement characteristic values are greater than or equal to the fetal movement thresholds, determining that a fetus is in a fetal movement period, and increasing the order of a low-frequency suppression filter in a fetal heart Doppler audio-frequency filter circuit; otherwise, determining that the fetus is in a non-fetal movement period, and reducing the order of the filter. The invention also relates to a device for realizing the method. The method and the device for improving the fetal heart Doppler signal acquisition quality during fetal movement have the following beneficial effects of eliminating the interference of the fetal movement signals on fetal heart Doppler signals to a certain extent and being relatively easy in subsequent processing.

The invention relates to a fetal heart monitoring data processing method, device, system, storage medium and computer equipment. The method comprises following steps: receiving fetal heart monitoringdata sent by a fetal heart monitoring device; selecting and obtaining a target data segment from the fetal heart monitoring data according to a preset algorithm; scoring the target data segment to obtain a scoring result; when the result of the scoring is abnormal, generating warning information according to the scoring result. The invention can improve the efficiency and accuracy of the interpretation of fetal heart rate monitoring data.

The invention provides fetal heart monitoring equipment. The fetal heart monitoring equipment is characterized by comprising a sensing node and a personal gateway, the sensing node does not actively emit ultrasonic waves to a fetus but passively collect sounds or vibration on the surface of the abdomen of a pregnant woman to acquire fetal heart signals, and sends the fetal heart signals to the personal gateway in a wireless manner, and the personal gateway is used for processing the fetal heart signals sent by the sensing node to acquire a fetal heart rate. By the fetal heart monitoring equipment, the pregnant woman can wirelessly monitor health status of the fetus at home by herself for a long time, and using passive-type fetal heart sound monitoring does not pose a threat to health of the fetus; and the fetal heart monitoring equipment is especially suitable for monitoring of high-risk pregnant women.

The invention discloses fetal heart monitoring equipment. The fetal heart monitoring equipment comprises a first communication interface, a data storage unit, a displayer and a data processor, wherein the first communication interface is suitable for being in communication with a fetal heart detector in a first communication mode; the data storage unit is suitable for storing fetal heart data information; the displayer is suitable for displaying the fetal heart data information; the data processor is suitable for receiving a fetal heart data package from the fetal heart detector through the first communication interface, and the fetal heart data information in the fetal heart data package is extracted, stored in the data storage unit and displayed on the displayer. The fetal heart data information comprises fetal heart rate data comprising a fetal heart rate, a self-correlation peak value and/or a peak value compared result, the data processor is used for displaying a heart rate value curve on the displayer according to the fetal heart rate, guide identification is displayed on the displayer according to the self-correlation peak value and/or the peak value compared result, and a user is conveniently guided to move the fetal heart detector. The invention further discloses a fetal heart monitoring system comprising the fetal heart monitoring equipment and a corresponding fetal heart monitoring method.

The invention discloses a passive fetal heart monitoring system based on an acoustic sensor, and belongs to the fetal heart monitoring technology. The monitoring system comprises an acoustic sensor directly or indirectly switched into a signal conditioning unit, the signal conditioning unit switched into a wireless transmitter, a wireless signal transmitter and intelligent terminal equipment, wherein the acoustic sensor is used for transmitting a collected heart sound signal to the signal conditioning unit; the signal conditioning unit is used for receiving a heart sound signal from the acoustic sensor and transponding the signal to the wireless signal transmitter; the wireless signal transmitter directly sends the heart sound signal to the intelligent terminal equipment; and the intelligent terminal equipment is used for detecting and recording the heart sound signal from the signal conditioning unit through an application program. Through adopting the acoustic sensor, a heart sound signal of a fetus is passively monitored on a belly of a gravida, so that ultrasonic radiation and worse user experience are eliminated; the passive fetal heart monitoring system is suitable for frequentative and repetitive examinations and household use, can also measure body temperature of the gravida at the same time, and is simple in structure, small in power consumption, low in use cost, and suitable for industrialized production, and facilitates popularization.

The invention relates to an intelligent ultrasonic sensor for fetal heart monitoring. The intelligent ultrasonic sensor comprises an MCU (microprogrammed control unit) master control unit, an ultrasonic processing unit, a group drive unit, a chipset unit and a display unit, wherein the chipset unit comprises a plurality of chipsets and a fixing plate used for fixing and mounting the chipsets, and the chipsets are distributed in various positions of the fixing plate; the MCU master control unit is used for sequentially exciting the chipsets in various positions to transmit ultrasonic waves through the group drive unit until the ultrasonic processing unit acquires a corresponding demodulation filter signal when a chipset in a certain position receives the reflected ultrasonic waves, and the display unit is controlled according to the demodulation filter signal, so that the display unit displays a position indication corresponding to the position of the chipset in a certain position. The invention further discloses a monitoring method of the intelligent ultrasonic sensor for fetal heart monitoring. The power consumption of the product is low, and the position of the heart of a fetus can be positioned accurately.

An ultrasound adapter system for performing ultrasound scanning on a target area of a subject over an extended period of time includes a flexible membrane formed to define an interior enclosure and an exterior. The system also includes an ultrasound gel arranged in the interior of the flexible membrane and at least one opening formed in the flexible membrane to provide access to the interior and restricted from allowing the ultrasound gel to pass through the at least one opening. The system further includes a mounting system attached to the exterior of the flexible membrane proximate to the at least one opening. The mounting system includes a mounting adapter substantially surrounding the at least one opening and a set of adapters extending from the ring and configured to engage an ultrasound probe extending through the ring and the at least one opening and into the ultrasound gel and hold the ultrasound in a substantially fixed position in the ultrasound gel relative to the mounting system.

The invention relates to a flexible monitoring device and a fetal heart monitoring method based on the flexible monitoring device. The flexible monitoring device comprises a flexible substrate, a flexible encapsulating material and one or N flexible ultrasonic sensing units, and N is larger than or equal to 2; the flexible ultrasonic sensing units are arranged on the flexible substrate; the flexible encapsulating material is used for encapsulating the flexible ultrasonic sensing units and the flexible substrate. The flexible ultrasonic units are arranged on the flexible substrate, and encapsulating is conducted through the flexible encapsulating material. By means of the flexible monitoring device and the fetal heart monitoring method based on the flexible monitoring device, the flexible monitoring device can better fit a monitoring body, and the fetal heart monitoring efficiency and accuracy are improved.

The invention provides a wearable low-power-consumption fetal heart monitoring system which comprises a fetal electrocardio acquisition unit, an intelligent terminal and a server unit. The fetal electrocardio acquisition unit is connected with the intelligent terminal in a Bluetooth transmission mode, and the intelligent terminal is connected with a server platform in a wired or wireless mode. The wearable low-power-consumption fetal heart monitoring system is small in size, convenient to carry and capable of continuously monitoring the fetal health; an intelligent display terminal displays the activity condition of the fetal heart, the server platform feeds back the diagnosis result to the intelligent display terminal, and thus the fetal monitoring is not limited by regions.

The invention discloses a system for monitoring a heart rate of a fetus in a mother body. The system comprises a signal acquisition module, a signal preprocessing module, a signal quality evaluation module, a maternal ECG extraction module, a maternal heart rate detection module, a maternal ECG suppression module, a fetal ECG extraction module, a fetal heart rate detection module and a result output module. The signal acquisition module collects electrical signals of the abdomen of a pregnant woman, the signal preprocessing module removes power frequency, baseline drift and myoelectric interference, the signal quality evaluation module eliminates low-quality signals, the maternal ECG extraction module and the maternal heart rate detection module calculate the maternal heart rate, the maternal ECG suppression module, the fetal ECG extraction module and the fetal heart rate detection module calculate the fetal heart rate, and the result output module simultaneously outputs the maternal heart rate and the fetal heart rate. The system eliminates the low-quality signals in the monitoring process and fully suppresses noise signals before detection of the fetal heart rate, can accuratelyextract the fetal heart rate with fewer ECG leads, and meets the need of clinical long-term fetal heart monitoring.

The invention provides a conformal fetal heart monitoring sensor. The conformal fetal heart monitoring sensor is characterized by comprising a curved outer shell and ultrasonic transducers, the radius of curvature of the inner surface of the curved outer shell ranges from 15 cm to 40 cm, and the area of the inner surface of the curved outer shell is not smaller than 35 cm<2>. The invention further provides a work method of the conformal fetal heart monitoring sensor. The work method is characterized by comprising the following steps of dividing the ultrasonic transducers into multiple sets, sequentially operating each ultrasonic transducer set, analyzing the monitored fetal heart sound signal intensity when each ultrasonic transducer set operates, and selecting the ultrasonic transducer set with the strongest monitored fetal heart sound signal to work. By means of the conformal fetal heart monitoring sensor and the work method thereof, the shape of the inner surface is similar to the shape of the abdomen of a puerpera, the sensor better fits the abdomen, and monitoring is more comfortable; the area of the inner surface is larger, the coverage area of an ultrasonic field is large, and the fetal heart monitoring performance is not reduced and the ultrasonic launching dosage is not increased while the monitoring comfort is improved and the coverage area of the ultrasonic field is increased.

The invention is suitable for the technical field of medical signal processing, and provides a method and a device for outputting parameters of a fetal heart rate curve. The method comprises the following steps of according to an original signal collected by fetal heart monitoring equipment, generating the fetal heart rate curve; extracting the fetal heart rate curve within a specified period of time; measuring the wave peak/wave trough parameters of the fetal heart rate curve within the specified period of time; simultaneously outputting the fetal heart rate curve and the measured wave peak/wave trough parameters. The method has the advantage that the wave peaks/wave troughs in the fetal heart rate curve can be accurately identified, so the outputted fetal heart rate curve can visually and correctly display the fetal heart rate acceleration and deceleration conditions, and a medical staff can conveniently and accurately perform identification according to the outputted fetal heart rate curve, and the identifying accuracy is improved.