Fetus-voice meter for obstetrics and gynecology department

Abstract

The invention relates to the technical field of fetal monitoring equipment, and provides a gynaecology and obstetrics fetus-voice meter which comprises a machine shell, the machine shell is fixedly connected with a front sleeve cover, the end of the front sleeve cover is connected with a rear sleeve cover through a connecting assembly so as to be bound to the waist of a pregnant woman, and one side of the top of the machine shell is fixedly connected with an earphone box; the other side of the top of the machine shell is rotationally connected with a display screen, and the display screen and the machine shell are attracted in a magnetic attraction mode. The Doppler probe assembly comprises at least two fetal heart probes, and the fetal heart probes are rotationally installed on the rear side of the front cover through a rotating module and used for emitting ultrasonic waves and receiving fetal heart reflection signals; a main control unit, a signal processing unit and a wireless communication unit are integrated in the machine shell. 80% of hardware filter circuits are reduced through a software normalization algorithm, and meanwhile, the influence of abnormal data is reduced by 60% through a peak value correction strategy. Through the collaborative architecture of wireless transmission and a local processor, the data processing delay is reduced from 200ms to 50ms, and meanwhile, the power consumption is reduced by 30%.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fetal monitoring equipment, in particular to a gynecological fetal heart monitor. BACKGROUND

[0002] In the clinical practice of gynecology and obstetrics, the fetal heart monitor is an important tool for monitoring the health status of the fetus, and its accuracy and comfort of the pregnant woman are directly related to the accuracy of the diagnosis and the experience of the pregnant woman. The fetal heart monitor mainly uses ultrasonic detection technology to complete fetal heart detection. Its function is to reflect the condition of the fetus in the pregnant woman's body by monitoring fetal movement and fetal heart rate. Fetal heart rate monitoring is the core means to evaluate the health status of the fetus. The traditional fetal heart monitor captures fetal heart signals through the Doppler ultrasound principle.

[0003] However, the prior art has significant limitations in practical application. The conventional Doppler fetal heart monitor uses a single probe, which is easily affected by the pregnant woman's body position change or fetal movement, resulting in signal loss or increased error. Some improved schemes use a multi-probe array to improve accuracy, but the hardware cost is high and the data processing is complex. Signal processing relies heavily on hardware normalization, resulting in loss of resolution and accumulation of errors. Although the software normalization method can reduce costs, the existing algorithm is sensitive to abnormal wave peaks and prone to introduce bias. The existing device lacks comfort and lacks adaptive straps. The single probe is easily disturbed, the multi-probe collaborative processing algorithm is inefficient, the normalization processing increases the hardware cost, the signal resolution is limited, and the rigid structure causes discomfort during wearing, affecting long-term monitoring. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a gynecological fetal heart monitor, which solves the problems of single probe being easily disturbed, multi-probe collaborative processing algorithm being inefficient, normalization processing increasing hardware cost, signal resolution being limited, rigid structure causing discomfort during wearing, and affecting long-term monitoring.

[0005] To achieve the above purpose, the following technical scheme is used: a gynecological fetal heart monitor, comprising: A housing is fixedly connected with a front cover, the end of the front cover is connected with a rear cover through a connecting assembly for binding around the pregnant woman's waist, a headphone box is fixedly connected to one side of the top of the housing, and a display screen is rotatably connected to the other side of the top of the housing and is attracted to the housing by magnetic attraction, A Doppler probe assembly includes at least two fetal heart probes, which are rotatably mounted on the rear side of the front cover through a rotating module for emitting ultrasonic waves and receiving fetal heart reflection signals. The housing is integrated with a main control unit, a signal processing unit and a wireless communication unit, and the signal processing unit is used for normalizing the original signals collected by the fetal heart probe.

[0006] Preferably, the connecting assembly comprises a clamping strip and a pull rope, one end of the clamping strip is connected to the rear cover in a sliding manner, the other end of the clamping strip is connected to the front cover in a plug-in manner, one end of the pull rope is connected to the rear cover in a rotating manner, and the other end of the pull rope is connected to the front cover in a sliding manner.

[0007] Preferably, the pull rope is provided with a tension sensor, and when the pulling force exceeds 10N, the main control unit locks the adjustment length and prompts "too tight" through the display screen.

[0008] Preferably, the inner sides of the rear cover and the front cover are provided with soft pads, and the inside of the pad is provided with an electric heating wire, which automatically starts heating to 32℃±2℃ when the skin temperature is detected to be <28℃.

[0009] Preferably, the normalization processing of the signal processing unit comprises the following steps: S1. Extracting local wave peaks of the original data queue; S2. Selecting the first N maximum wave peaks to calculate the mean value as the reference value R, and setting the output range Rf; S3. Normalizing the data according to the formula Y(n)=X(n) / R, if |Y(n)|>Rf, then Y(n)=±Rf; Wherein, N=3-5, Rf∈[3,10].

[0010] Preferably, the signal processing unit further comprises a filter configured as a low-pass filter with a cutoff frequency ≤100Hz for eliminating electromyographic signal interference.

[0011] Preferably, the wireless communication unit supports Bluetooth 5.0 and Wi-Fi 6 protocols, uploads fetal heart data to a cloud platform in real time, and displays fetal heart rate curves and alarm thresholds through a mobile terminal, and the alarm threshold is set to trigger an alarm when the fetal heart rate is <110 beats / min or >160 beats / min.

[0012] Preferably, the main control unit adopts a dual-core processor configured to process multiple probe signals in parallel and align multiple waveform peaks based on a dynamic time warping algorithm.

[0013] Preferably, the front cover is embedded with an ultraviolet disinfection lamp, which is automatically started after the probe is stored, with an irradiation intensity ≥50μW / cm² and a duration of 10 minutes.

[0014] A method for using a fetal heart monitor in gynecology and obstetrics, comprising the following steps: Step one, adjust the tightness of the front cover and the rear cover through the pull rope, so that the waist support fits the pregnant woman's waist, and detect the pulling force ≤10N through the tension sensor; Step 2: Start the fetal heart rate probe via the touch screen. The rotating module drives the fetal heart rate probe to rotate at 10° intervals, simultaneously acquiring fetal heart rate signals from multiple angles. Step 3: The main control unit calls the dynamic time warping algorithm to align the peak values ​​of the multi-probe waveforms and removes data with a deviation >15%. Step 4: The wireless communication unit uploads the fetal heart rate curve to the cloud in real time. If the fetal heart rate is detected to be outside the range of 110-160 beats / minute, an audible and visual alarm is triggered and pushed to the mobile terminal.

[0015] This invention provides a fetal heart rate monitor for obstetrics and gynecology. It has the following beneficial effects: 1. This invention reduces hardware filtering circuitry by 80% through a software normalization algorithm, while reducing the impact of abnormal data by 60% through a peak correction strategy. The collaborative architecture of wireless transmission and local processor reduces data processing latency from 200ms to 50ms, while power consumption is reduced by 30%.

[0016] 2. This invention utilizes a combination of multi-probe rotational scanning and dynamic waveform alignment algorithm to reduce the detection error from the traditional ±10bpm to ±3bpm. Furthermore, the temperature-controlled back cover and front cover, combined with tension-adaptive straps, ensure even distribution of wearing pressure. Clinical tests show that the comfort score of pregnant women has increased by 40%.

[0017] 3. Compared to traditional fetal heart monitors, this invention is approximately 60% smaller, making it easier for pregnant women to carry. The waist-cinching design, as demonstrated in clinical tests, reduces wearing pressure by 45%, resulting in no discomfort even after prolonged use. The integrated design of the headphones, display screen, and main unit eliminates the need for redundant external devices, enhancing ease of operation. Attached Figure Description Figure 1 This is a perspective view of the present invention; Figure 2 This is a system diagram of the present invention; Figure 3 This is a flowchart of the present invention.

[0018] The components include: 1. casing; 2. display screen; 3. headphone box; 4. drawstring; 5. rear cover; 6. clips; and 7. front cover. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example: As one aspect of the present invention, please refer to the appendix. Figure 1 - Appendix Figure 2 This invention provides a fetal heart rate monitor for obstetrics and gynecology, characterized in that it includes: The housing 1 is fixedly connected to a front cover 7. The end of the front cover 7 is connected to a rear cover 5 via a locking strip 6 and a pull-out rope 4. One end of the locking strip 6 is slidably connected to the rear cover 5, and the other end is connected to the front cover 7 via a plug-in connection. One end of the pull-out rope 4 is rotatably connected to the rear cover 5, and the other end is slidably connected to the front cover 7 for securing it around the pregnant woman's waist. The pull-out rope 4 has a built-in tension sensor; when the pulling force exceeds 10N, it triggers the main control unit to lock the adjusted length and displays "Too tight" on the display screen 2. An earphone box 3 is fixedly connected to one side of the top of the housing 1, and a display screen 2 is rotatably connected to the other side of the top of the housing 1. It supports 0–120° angle adjustment with a resolution of 1920×1080 and is magnetically attached to the housing 1. Memory foam padding is provided inside the soft pads of the rear cover 5 and the front cover 7, with built-in heating wires and temperature sensors. When the detected skin temperature is <28℃, it automatically heats to 32℃±2℃ (PID control). The back cover 5 features a breathable mesh design for its soft padding, conforming to the pregnant woman's waistline and providing even pressure distribution. The Doppler probe assembly includes at least two fetal heart probes. The fetal heart probes use piezoelectric ceramic ultrasonic sensors with a working frequency of 2.5MHz. They emit ultrasonic waves and receive fetal heart reflection signals. The fetal heart probes are rotatably mounted on the rear side of the front cover 7 via a rotating module. They are used to emit ultrasonic waves and receive fetal heart reflection signals. The rotating module consists of a stepper motor and a gear set. The motor drives the gear to rotate the probe (10) around the axis to ensure multi-angle signal acquisition. The front cover 7 is embedded with an ultraviolet disinfection lamp, which is automatically activated after the probe is stored. The irradiation intensity is ≥50μW / cm² and lasts for 10 minutes. The signal processing unit located inside the housing 1 is used to normalize the raw signal collected by the fetal heart probe. The mean value R is calculated by selecting N=4 maximum peaks and setting Rf=8. The normalized data range is limited to ±8. The signal processing unit also includes a filter, which is configured as a low-pass filter with a cutoff frequency ≤100Hz to eliminate electromyographic signal interference. The wireless communication unit located inside the casing 1 supports Bluetooth 5.0 and Wi-Fi 6 protocols, uploads fetal heart rate data to the cloud platform in real time, and displays the fetal heart rate curve and alarm threshold through the mobile terminal. The alarm threshold is set to trigger an alarm when the fetal heart rate is <110 beats / min or >160 beats / min, triggering an audible and visual alarm and pushing it to the mobile APP. The main control unit located inside the housing 1 uses a dual-core processor, configured to process multi-probe signals in parallel, and aligns the peak values ​​of multiple waveforms based on the Dynamic Time Warping (DTW) algorithm, eliminating data with a deviation >15%. The final heart rate calculation formula is: Comprehensive fetal heart rate = Max(HR) + Min(HR) + 2 × Median(HR) / 4.

[0021] The main control unit, signal processing unit, wireless communication unit and power module (lithium battery, capacity 2000mAh) adopt a stacked layout and are connected by a flexible circuit board to reduce the space occupied by wiring.

[0022] As another aspect of the present invention, please refer to the appendix. Figure 3 This invention provides a method for using a fetal heart rate monitor in obstetrics and gynecology, comprising the following steps: Step 1: Adjust the tightness of the front cover 7 and the back cover 5 using the pull cord 4 to make the lumbar support fit the pregnant woman's waist, and use the tension sensor to detect that the pulling force is ≤10N; Step 2: Start the fetal heart rate probe via the touch screen 2. The rotating module drives the fetal heart rate probe to rotate at 10° intervals, and simultaneously collects fetal heart rate signals from multiple angles. Step 3: The main control unit calls the Dynamic Time Warping (DTW) algorithm to align the peak values ​​of the multi-probe waveforms and removes data with a deviation >15%. Step 4: The wireless communication unit uploads the fetal heart rate curve to the cloud in real time. If the fetal heart rate is detected to be outside the range of 110-160 beats / minute, an audible and visual alarm is triggered and pushed to the mobile terminal.

[0023] The normalization process of the signal processing unit includes the following steps: S1. Extract local peaks from the original data queue; S2. Select the average of the first N largest peaks as the reference value R, and set the output range Rf; S3. Normalize the data according to the formula Y(n)=X(n) / R. If |Y(n)|>Rf, then Y(n)=±Rf; Where N = 3 to 5, Rf ∈ [3, 10].

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fetal heart rate monitor for obstetrics and gynecology, characterized in that, include: The housing (1) is fixedly connected to a front cover (7), the end of which is connected to a rear cover (5) via a connecting assembly for use in binding around the pregnant woman's waist. An earphone box (3) is fixedly connected to one side of the top of the housing (1), and a display screen (2) is rotatably connected to the other side of the top of the housing (1) and magnetically attracted to the housing (1). The Doppler probe assembly includes at least two fetal heart probes, which are rotatably mounted on the rear side of the front cover (7) via a rotating module for emitting ultrasonic waves and receiving fetal heart reflection signals; The housing (1) integrates a main control unit, a signal processing unit, and a wireless communication unit. The signal processing unit is used to normalize the raw signals collected by the fetal heart probe.

2. The obstetric fetal heart rate monitor according to claim 1, characterized in that, The connecting assembly includes a locking strip (6) and a pull cord (4) located at both ends of the front cover (7). One end of the locking strip (6) is slidably connected to the rear cover (5), and the other end of the locking strip (6) is connected to the front cover (7) by plugging. One end of the pull cord (4) is rotatably connected to the rear cover (5), and the other end of the pull cord (4) is slidably connected to the front cover (7).

3. The obstetric fetal heart rate monitor according to claim 1, characterized in that, The pull cord (4) has a built-in tension sensor. When the pulling force exceeds 10N, it triggers the main control unit to lock the adjustment length and prompts "too tight" through the display screen (2).

4. The obstetric fetal heart rate monitor according to claim 1, characterized in that, The inner sides of the rear cover (5) and the front cover (7) are both provided with soft pads, and the inside of the pads is provided with heating wires. When the skin temperature is detected to be <28℃, the heating is automatically started to 32℃±2℃.

5. A fetal heart rate monitor for obstetrics and gynecology according to claim 1, characterized in that, The normalization process of the signal processing unit includes the following steps: S1. Extract local peaks from the original data queue; S2. Select the average of the first N largest peaks as the reference value R, and set the output range Rf; S3. Normalize the data according to the formula Y(n)=X(n) / R. If |Y(n)|>Rf, then Y(n)=±Rf. Where N = 3 to 5, Rf ∈ [3, 10].

6. A fetal heart rate monitor for obstetrics and gynecology according to claim 1, characterized in that, The signal processing unit further includes a filter configured as a low-pass filter with a cutoff frequency ≤100Hz to eliminate electromyographic signal interference.

7. A fetal heart rate monitor for obstetrics and gynecology according to claim 1, characterized in that, The wireless communication unit supports Bluetooth 5.0 and Wi-Fi 6 protocols, uploads fetal heart rate data to the cloud platform in real time, and displays the fetal heart rate curve and alarm threshold through the mobile terminal. The alarm threshold is set to trigger an alarm when the fetal heart rate is <110 beats / min or >160 beats / min.

8. A fetal heart rate monitor for obstetrics and gynecology according to claim 1, characterized in that, The main control unit uses a dual-core processor, is configured to process multi-probe signals in parallel, and aligns the peak values ​​of multiple waveform segments based on the Dynamic Time Warping (DTW) algorithm.

9. A fetal heart rate monitor for obstetrics and gynecology according to claim 1, characterized in that, The front cover (7) is equipped with an ultraviolet disinfection lamp, which is automatically activated after the probe is stored. The irradiation intensity is ≥50μW / cm² and lasts for 10 minutes.

10. A method of using a fetal heart rate monitor for obstetrics and gynecology, comprising using a fetal heart rate monitor for obstetrics and gynecology as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Adjust the tightness of the front cover (7) and the back cover (5) by pulling the rope (4) so ​​that the waist support (11) fits the pregnant woman's waist and the tension sensor detects that the tension is ≤10N; Step 2: Start the fetal heart probe through the touch screen (2), and drive the fetal heart probe to rotate at 10° intervals through the rotating module (9) to collect fetal heart signals from multiple angles simultaneously. Step 3: The main control unit calls the Dynamic Time Warping (DTW) algorithm to align the peak values ​​of the multi-probe waveforms and removes data with a deviation >15%. Step 4: The wireless communication unit uploads the fetal heart rate curve to the cloud in real time. If the fetal heart rate is detected to be outside the range of 110-160 beats / minute, an audible and visual alarm is triggered and pushed to the mobile terminal.

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