31 results about "Fetal heart rate monitor" patented technology

A combinational fetal heart rate monitor and uterine activity measuring device for use on a pregnant patient. The fetal heart rate and uterine activity monitor comprising a plurality of electrodes disposed to be attached on the abdomen of the patient and an ultrasound transducers disposed to be attached on the abdomen of the patient. An energy source is operable to generate an excitation signal and the energy source is connected to a multiplexer which is connected between the plurality of electrodes and the ultrasound transducer, the multiplexer being selectively positioned to direct the excitation signal from the energy source to either the electrode or the ultrasound transducer. An amplifier connected to the energy source compares the excitation signal to the excitation signal after it passes through the abdomen of the patient. The signal from the amplifier is demodulated and processed to calculate physiological parameter based on the change in the excitation signal.

A continuous, noninvasive fetal heart rate measurement is produced using one or more ultrasonic transducer adhered to the abdomen of the mother. Each ultrasound transducer generates an ultrasound beam having a signal strength. The signal strength is determined by an excitation voltage applied to the ultrasound transducer. An excitation voltage adjustment device is positioned between an excitation voltage generator and the ultrasound transducer to selectively control the strength of the ultrasound beam. A user input device allows an operator to control the ultrasound signal strength to vary the depth of viewing of the fetal heart rate monitor.

The invention relates to a movable measuring electrode device used for fetal heart rate monitoring. The movable measuring electrode device used for fetal heart rate monitoring is characterized by comprising a reference electrode and a holding part which are mutually independent, wherein a first electrode contacted with the finger and / or the palm is arranged on the outer circumferential surface of the holding part, a second electrode contacted with the abdomen is arranged on the end surface at the bottom of the holding part, and the reference electrode, the first electrode and the second electrode are connected with a respective electrode wire respectively. After the movable measuring electrode device used for fetal heart rate monitoring is connected with a fetal heart rate monitor, the reference electrode is attached to a side of the abdomen, one hand holds the holding part, the palm or the finger is contacted with the first electrode, and meanwhile the second electrode is attached to the abdomen and finds the point where the fetal heart rate signals are strongest so that the fetal heart rate can be monitored conveniently. The existing fetal heart rate monitor can be fully used, and no influence is generated on a fetus.

The invention discloses an ultrasonic Doppler fetal heart rate monitor, which comprises a main body, a transmission line is fixedly connected to the center of the upper end of the main body, and a monitor is fixedly connected to the end of the transmission line away from the main body, and the end of the monitor far away from the transmission line A monitoring head is fixedly connected, an automatic smearing mechanism is set on the monitoring head, and a positioning mechanism is installed on the monitoring head. The present invention is provided with a positioning mechanism, which is convenient for the user to move the monitoring head directly above the fetal heart rate and obtain a clear Accurate fetal heart rate data. At the same time, the ultrasonic probes in eight directions and the central ultrasonic probe can detect the fetal heart rate together, so that the acquired fetal heart rate information is clearer and more accurate. The monitoring head is more evenly applied, the amount of couplant is less, and the waste of couplant is avoided. The invention is also equipped with an ultraviolet disinfection lamp to prevent the bacteria on the monitoring head from harming the skin of pregnant women and affecting the health of pregnant women.

The present invention relates to larger area electrodes suitable for use in fetal heart rate monitoring systems. The electrode comprises: a skin gel contact (10) for sensing a fetal electrocardiogram signal from a human pregnancy test subject; an electrical conductor (12) electrically connected to the gel contact (10) to define a first electrical contact a region; a connector (14) in electrical contact with the electrical conductor (12) for connection to the leads; and a base (16) for attachment to a human pregnancy test subject. The gel contact (10) and electrical conductor (12) are arranged on the substrate (16) to allow the contact surface (11) of the gel contact (10) to communicate electrically with the skin of a human pregnancy test subject to define the first Two electrical contact areas. The area of ​​the second electrical contact region is greater than 370 square millimeters. When arranged in the abdomen according to the predetermined electrode topology, the success rate of fetal heart rate detection can be significantly increased. This topology can be incorporated into a flat flexible cable, which provides a comfortable and reproducible electrode arrangement, allowing untrained personnel to apply a multi-electrode patch to the abdomen of a pregnant mother.

An acceleration parameter acquisition method based on fetal heart rate signals in fetal heart rate monitoring, comprising a signal input detection module, an acceleration signal identification and extraction module, a unit acceleration rate calculation module, and an acceleration parameter output module. Among them: the signal input detection module includes signal preprocessing and effective signal extraction, the acceleration signal identification and extraction module includes baseline calculation, acceleration signal identification, acceleration signal extraction and acceleration signal preprocessing, and the unit acceleration calculation module includes calculation units Acceleration rate and number of acceleration grids per unit time. The method can use the fetal heart rate signal to obtain the characteristic parameters related to acceleration, reduce the errors mainly caused by the visual inspection method at present, and effectively improve the interpretation efficiency of the fetal heart rate monitoring map.

The invention discloses a fetal heart monitoring abdominal belt based on optical fiber sensing, each pre-bent optical fiber sensing unit is fixed on the corresponding vibration sensitive membrane, and each pre-bent optical fiber sensing unit is connected to the corresponding The vibration-sensitive film is embedded in the fabric of the abdominal support belt body; the light source is used to send laser light to each pre-bent optical fiber sensing unit, and the optical signal receiving component is used to receive vibration when passing through each pre-bent optical fiber sensing unit Signal modulated laser signal, and convert the laser signal modulated by the vibration signal into corresponding multiple electrical signals with physiological characteristic information; the signal processing and analysis module is used to separate the fetal heartbeat information. The invention perceives vibration signals caused by fetal heartbeat and fetal movement through optical fiber-based high-sensitivity vibration sensing technology, and realizes continuous real-time monitoring of fetal health status through processing and analysis of multiple signals.

The invention relates to a portable fetal heart rate monitor and a monitoring method thereof, belonging to the field of medical equipment. The device includes a bioelectric sensor, signal amplification and filter, A / D converter, embedded microcontroller, memory, LCD display, rechargeable battery, clock frequency module, bluetooth and NFC module; the device detection method includes steps: Collect bioelectrical signals from the abdomen; use adaptive filtering algorithm to filter out myoelectric signals and noise interference; use wavelet algorithm to extract MECG signals; add Gaussian white noise to FECGErr signals to perform ensemble empirical mode decomposition; The IMF signal of X is subjected to singular value decomposition to obtain k singular values ​​of matrix X; and the k singular values ​​are sorted; the number of fetuses is predicted. The present invention only uses one maternal abdominal wall signal to realize the separation of maternal and fetal electrocardiographic signals, and can be used for the first time after 5 gestational weeks of pregnancy, and can estimate the number of fetuses.

The invention discloses a coupling analysis method for fetal heart rates and uterine contraction signals. The coupling analysis method is implemented by the aid of a signal input module, a signal preprocessing module, a coupling parameter calculation module and a parameter output module. The signal input module is responsible for receiving the fetal heart rates and the uterine contraction signalswhich are measured by fetal heart rate monitoring instruments, the signal preprocessing module is responsible for carrying out cubic spline interpolation repair and band-pass filtering processing on abnormal values of received signals, cross power spectra, coherence spectra and coupling parameters of the fetal heart rates and the uterine contraction signals can be calculated by the coupling parameter calculation module, and the parameter output module is responsible for outputting calculation results. The coupling analysis method has the advantages that intrauterine movement conditions of fetuses can be analyzed by the aid of multivariate time series coupling analysis technologies, the cross power spectra and the coherence spectra can be fused with one another to quantitatively evaluate the coupling degrees between the fetal heart rates and the uterine contraction signals, accordingly, the shortcomings of incomplete univariate information and inaccurate analysis can be effectively overcome, and the intrauterine movement conditions of the fetuses can be comprehensively and accurately evaluated by the aid of the coupling analysis method.

The invention discloses a multipoint fetal heart monitoring instrument. A power source module, a main control module and a probe module are arranged in a shell. The probe module comprises a fixing frame, a main ultrasonic sensor, a rotating frame, an auxiliary ultrasonic sensor, a transmission gear, a reduction gear and a stirring gear; the main ultrasonic sensor is fixedly arranged at the lower end of the fixing frame, a rotating shaft which penetrates through a shielding plate and is fixedly connected with an upper shell is arranged at the upper end of the fixing frame, and is rotationally sleeved with the rotating frame through a bearing, the auxiliary ultrasonic sensor is installed on the side of the rotating frame, the transmission gear is fixedly connected on the rotating frame, the reduction gear is arranged in the shell through a gear shaft, and the stirring gear is arranged on the side of the shell through a gear shaft. By means of the multipoint fetal heart monitoring instrument, the fetal heart can be rapidly sought and positioned; the position of the auxiliary ultrasonic sensor is adjusted, and the signal strength of fetal heart monitoring is reinforced and kept stable, and the accuracy of the monitoring result is guaranteed.