Pregnant woman fetal heart monitoring system

Abstract

The invention relates to the technical field of medical equipment, in particular to a pregnant woman fetal heart monitoring system which comprises a waistband used for being bound to the waist of a pregnant woman and comprising a probe array arranged at a preset position, and the probe array corresponds to the pregnant belly position of the pregnant woman and is used for collecting fetal heart and fetal movement signals and uterine contraction signals; the transmission module is used for transmitting the fetal heart signal, the fetal movement signal and the uterine contraction signal to the processing terminal; the processing terminal is connected with the waistband through the transmission module, and is used for drawing a real-time fetal heart change curve based on the fetal heart and fetal movement signals and drawing a real-time uterine contraction change curve based on the uterine contraction signals, and performing visual display; according to the method, whether monitoring abnormity occurs or not is judged on the basis of the real-time fetal heart change curve and / or the real-time uterine contraction change curve, an alarm is given when monitoring abnormity occurs, the probe array is arranged on the waistband, fetus position changes do not need to be worried about, monitoring of fetal heart, fetal movement and uterine contraction is conducted in an all-around mode, and efficient monitoring is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a fetal heart monitoring system for pregnant women. Background Art

[0002] The uterine contraction monitoring currently widely used in clinical practice mainly adopts the traditional external fetal heart rate monitor. Its core principle is to contact the pregnant woman's abdominal wall at a single point through a piezoelectric ceramic sensor, indirectly measure the changes in abdominal wall tension caused by uterine contractions, and thus determine the uterine contraction situation.

[0003] However, since existing monitors are easily affected by changes in the fetal position in the body, which affects the accuracy of monitoring, how to achieve efficient monitoring without being affected by the fetal position is a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of the above problems, the present invention provides a fetal heart monitoring system for pregnant women that overcomes the above problems or at least partially solves the above problems.

[0005] The present invention provides a fetal heart monitoring system for pregnant women, comprising:

[0006] A belt, used to be tied around the waist of a pregnant woman, including a probe array arranged at a preset position, the probe array corresponding to the position of the pregnant woman's belly, used to collect fetal heart rate, fetal movement signals and uterine contraction signals;

[0007] A transmission module, used for transmitting fetal heart rate, fetal movement signal and uterine contraction signal to a processing terminal;

[0008] The processing terminal is connected to the waist belt through the transmission module, and is used to draw a real-time fetal heart rate change curve based on the fetal heart rate and fetal movement signals and a real-time uterine contraction change curve based on the uterine contraction signal, and to display them visually; based on the real-time fetal heart rate change curve and / or the real-time uterine contraction change curve, it is judged whether a monitoring abnormality occurs, and an alarm is issued when a monitoring abnormality occurs.

[0009] Preferably, the waist belt comprises a first strap and a second strap;

[0010] The probe array at the first preset position on the first strap uses a stress sensor for collecting uterine contraction signals, and the first preset position corresponds to the uterine fundus position of the pregnant woman;

[0011] The probe array at the second preset position on the second strap uses an ultrasonic probe to collect fetal heart rate and fetal movement signals, and the second preset position corresponds to the abdomen of the pregnant woman.

[0012] Preferably, the waist belt comprises a circular monitoring cushion and a third strap connecting two ends of the circular monitoring cushion;

[0013] The circular monitoring cushion includes an upper semi-circular area and a lower semi-circular area. The probe array arranged in the upper semi-circular area is a stress sensor, and the probe array arranged in the lower semi-circular area is an ultrasonic probe. The upper semi-circular area corresponds to the fundus position of the pregnant woman, and the lower semi-circular area corresponds to the abdomen of the pregnant woman.

[0014] The third strap extends from both ends of the circular monitoring cushion and is fastened to the back of the pregnant woman.

[0015] Preferably, the stress sensors and ultrasonic probes are arranged at intervals on the circular monitoring cushion.

[0016] Preferably, the processing terminal is configured to:

[0017] Based on the fetal heart rate and fetal movement signals, wavelet transform is used to remove the electromyogram interference, and baseline correction is used to eliminate the position drift, so as to obtain a preprocessed signal;

[0018] Based on the preprocessed signal, characteristic points are extracted;

[0019] Based on the characteristic points, a real-time fetal heart rate change curve changing with time is drawn.

[0020] Preferably, the processing terminal is configured to:

[0021] Based on the uterine contraction signal, the uterine contraction change characteristics are extracted, and the uterine contraction change characteristics include uterine contraction intensity, uterine contraction frequency, uterine contraction duration, and uterine contraction interval time;

[0022] Based on the uterine contraction change characteristics, a real-time uterine contraction change curve changing with time is drawn.

[0023] Preferably, the processing terminal is further configured to:

[0024] Based on the real-time uterine contraction change curve, determine whether the change law of uterine contraction is coordinated;

[0025] If not, it is determined that the monitoring is abnormal.

[0026] Preferably, the processing terminal is further configured to:

[0027] Based on the real-time uterine contraction change curve, determine whether there is an abnormality in the real-time fetal heart rate change curve when uterine contraction occurs;

[0028] If so, it is determined that the monitoring is abnormal.

[0029] Preferably, the processing terminal is further configured to:

[0030] Based on the real-time fetal heart rate change curve, determine whether there is a situation where the fetal heart rate accelerates and then drops back after a preset duration;

[0031] If not, it is determined that the monitoring is abnormal.

[0032] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0033] The present invention provides a fetal heart rate monitoring system for pregnant women, including: a belt for binding around the waist of a pregnant woman, including a probe array disposed at a preset position, the probe array corresponding to the position of the pregnant woman's pregnant belly for collecting fetal heart rate, fetal movement signals, and uterine contraction signals; a transmission module for transmitting the fetal heart rate, fetal movement signals, and uterine contraction signals to a processing terminal; the processing terminal is connected to the belt through the transmission module, and is used for drawing a real-time fetal heart rate change curve based on the fetal heart rate and fetal movement signals and drawing a real-time uterine contraction change curve based on the uterine contraction signals, and visualizing and displaying; based on the real-time fetal heart rate change curve and / or the real-time uterine contraction change curve, judging whether monitoring abnormalities occur, and alarming when monitoring abnormalities occur. By setting a probe array on the belt, there is no need to worry about changes in the fetal position, and comprehensive monitoring of the fetal heart rate, fetal movement, and uterine contractions is achieved, realizing efficient monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0035] Figure 1 shows a schematic structural diagram of the fetal heart rate monitoring system for pregnant women in the embodiments of the present invention;

[0036] Figure 2 shows a schematic structural diagram when there are two belts in the embodiments of the present invention;

[0037] Figure 3 shows a schematic structural diagram when there is one belt in the embodiments of the present invention;

[0038] Figure 4 shows another schematic structural diagram when there is one belt in the embodiments of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The exemplary embodiments of the present invention will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be fully conveyed to those skilled in the art.

[0040] The embodiments of the present invention provide a prenatal fetal monitoring system for pregnant women, as Figure 1 shown, including:

[0041] The belt 101 is used to be strapped around the waist of a pregnant woman, and includes a probe array arranged at a preset position. The probe array corresponds to the position of the pregnant woman's pregnant belly and is used to collect fetal heart rate, fetal movement signals, and uterine contraction signals.

[0042] The transmission module 102 is used to transmit the fetal heart rate, fetal movement signals, and uterine contraction signals to the processing terminal.

[0043] The processing terminal 103 is connected to the belt 101 through the transmission module. It is used to draw a real-time fetal heart rate change curve based on the fetal heart rate and fetal movement signals and a real-time uterine contraction change curve based on the uterine contraction signals, and visually display them; based on the real-time fetal heart rate change curve and / or the real-time uterine contraction change curve, judge whether there is abnormal monitoring, and give an alarm when abnormal monitoring occurs.

[0044] Specifically, one belt 101 can be used, or two belts can be used. The following will separately explain the cases of using one and two belts:

[0045] As Figure 2 shown, when two belts are used, the belt 101 includes a first strap 201 and a second strap 202. Among them, the probe array at the first preset position on the first strap 201 uses a stress sensor to collect uterine contraction signals, and this first preset position corresponds to the fundus position of the pregnant woman; the probe array at the second preset position on the second strap 202 uses an ultrasonic probe to collect fetal heart rate and fetal movement signals, and the second preset position corresponds to the abdomen of the pregnant woman and is at the position where the fetal heart rate is the strongest.

[0046] In a specific implementation manner, after the first strap 201 is strapped around the waist, the first preset position is located at the fundus, and the stress sensor at the first preset position collects the uterine contraction signals of the pregnant woman; after the second strap 202 is strapped around the waist, the second preset position is located at the abdomen of the pregnant woman and at the position where the fetal heart rate is the strongest, and the ultrasonic probe at the second preset position collects the fetal heart rate and fetal movement signals of the pregnant woman.

[0047] Since probe arrays are used on both the first strap 201 and the second strap 202, therefore, in the case where some probes are not accurately positioned, other probes can obtain corresponding signals, so as to avoid the problem that the conventional number of probes and the coverage area are small, resulting in inaccurate detection, and improve the detection efficiency.

[0048] As Figure 3As shown in the figure, when using one, the belt 101 includes a circular monitoring cushion 301 and a third strap 302 connecting the circular monitoring cushion 301; the circular monitoring cushion 301 includes an upper semi-circular area 3011 and a lower semi-circular area 3012. The probe array set in the upper semi-circular area 3011 is a stress sensor, and the probe array set in the lower semi-circular area 3012 is an ultrasonic probe. The upper semi-circular area 3011 corresponds to the fundus position of the pregnant woman, and the lower semi-circular area 3012 corresponds to the abdomen of the pregnant woman and is at the position where the fetal heart is the strongest; the third strap 302 extends from both ends of the circular monitoring cushion 301 and is fastened behind the pregnant woman.

[0049] The circular monitoring cushion 301 can be placed on the belly of the pregnant woman, and the third strap 302 is used for fixation. The operation process is saved by the one-step fixation method, and the monitoring efficiency is improved.

[0050] Another situation is as Figure 4 shown. The stress sensors and ultrasonic probes are arranged at intervals on the circular monitoring cushion 301. By using the method of arranging the probe arrays at intervals, any fetal position situation can be avoided, and there is no need to adjust the belt halfway, which improves the monitoring efficiency.

[0051] After the fetal heart, fetal movement signals and uterine contraction signals are collected by the belt 101, they are transmitted by the transmission module 102. The transmission module 102 can adopt a wired method or a wireless method, which is not limited here.

[0052] Specifically, the fetal heart, fetal movement signals and uterine contraction information are transmitted to the processing terminal 103 by the transmission module 102. The processing terminal includes a display screen and a processing unit. Among them, the processing unit realizes uterine contraction warning and fetal heart warning.

[0053] In an optional implementation manner, the processing terminal is used for:

[0054] Based on the fetal heart and fetal movement signals, wavelet transform is used to remove the electromyogram interference, and baseline correction is used to eliminate the posture drift to obtain a preprocessed signal; then based on the preprocessed signal, characteristic points are extracted; based on the characteristic points, a real-time fetal heart change curve changing with time is drawn.

[0055] Since the fetal heart signal is mixed with the maternal signal, wavelet transform is needed to remove the electromyogram interference, so as to filter out the maternal movement artifacts, and then baseline correction is used to eliminate the posture drift. The baseline correction filters out physiological interferences, including uterine contraction pressure and maternal breathing, and also non-physiological interferences, including sensor displacement and electromagnetic interference, etc. Thus, the preprocessed signal is obtained. Then, characteristic point extraction is carried out. By extracting characteristic points, such as acceleration or deceleration situations, a real-time fetal heart change curve changing with time is drawn according to these situations. The fetal movement change is acquired simultaneously with the fetal heart monitoring.

[0056] In the late pregnancy of a pregnant woman, during the monitoring period of a preset time period (20 minutes), the baseline range of the fetal heart rate during normal fetal heart monitoring fluctuates between 110 and 160 beats per minute, and there is good baseline variability. There are at least 3 obvious fetal movements, and the fetal heart will rise correspondingly after each fetal movement or uterine contraction. If the baseline variability is abnormal, such as the continuous fetal heart baseline is lower than 100 beats per minute or higher than 180 beats per minute, or there is fetal heart deceleration during fetal movement or uterine contraction, an alarm prompt will be given to attract the attention of medical staff, and the fetal heart monitoring curve will be checked in time for judgment and treatment to avoid intrauterine hypoxia of the fetus.

[0057] In an optional implementation manner, the processing terminal 103 is used for:

[0058] Based on the uterine contraction signal, extract the uterine contraction change characteristics, where the uterine contraction change characteristics include uterine contraction intensity, uterine contraction frequency, uterine contraction duration, and uterine contraction interval time; based on the uterine contraction change characteristics, draw a real-time uterine contraction change curve that changes with time.

[0059] In the late pregnancy, a pregnant woman will have uterine contractions from time to time. Monitoring uterine contractions can understand the placental function and the tolerance of the fetus to hypoxia during uterine contractions. Uterine contractions should be regular contractions of the uterus.

[0060] By extracting the uterine contraction change characteristics, it can be analyzed and determined whether the uterine contractions are normal. Therefore, through these characteristics such as uterine contraction intensity, uterine contraction frequency, uterine contraction duration, and uterine contraction interval time, a uterine contraction change curve can be drawn.

[0061] After obtaining the uterine contraction change curve and the fetal heart change curve, since the uterine contraction change will cause abnormalities in the fetal heart, therefore, when the fetal heart is abnormal, the abnormalities can be excluded by analyzing the uterine contraction situation.

[0062] Next, based on the uterine contraction change curve and the fetal heart change curve, it is judged whether monitoring abnormalities occur.

[0063] First, the processing terminal 103 is used for:

[0064] Based on the real-time uterine contraction change curve, judge whether the change law of the uterine contraction is coordinated;

[0065] If not, it is determined as monitoring abnormality.

[0066] In a specific embodiment, normal uterine contractions are rhythmic, that is, contractions and intervals alternate, and the contraction intensity gradually increases, the duration gradually extends, and the interval time gradually shortens; while the rhythm of uncoordinated uterine contractions is disrupted, the frequency and intensity of contractions are irregular, and the interval time is also not fixed. In terms of symmetry, normal uterine contractions originate from the two corners of the uterus and are conducted symmetrically towards the center and downward; but during uncoordinated uterine contractions, this symmetry disappears, and the contractions of each part of the uterus are not synchronous, with some parts having strong contractions, some parts having weak contractions, and even some parts not contracting at all.

[0067] When judging whether the change rule of uterine contractions is coordinated, specifically, it is to judge whether the uterine contractions are rhythmic, that is, to judge whether the change rule of uterine contractions meets the above-mentioned rhythm. Since it is an array probe in the present invention, therefore, the change situation of uterine contractions at different positions of the uterus can be collected, and thus it can be judged whether the change rule of uterine contractions is coordinated.

[0068] Second, the processing terminal 103 is used for:

[0069] Based on the real-time uterine contraction change curve, when uterine contractions occur, judge whether there is an abnormality in the real-time fetal heart rate change curve; if so, determine that the monitoring is abnormal.

[0070] The change of uterine contractions will cause the change of fetal heart rate. If it is normal that the fetal heart rate accelerates when uterine contractions are monitored, or the uterine contractions and fetal heart rate deceleration occur simultaneously and end synchronously, that is, the fetal heart rate deceleration quickly returns to normal after the uterine contractions end, it is determined that the monitoring is normal. If the fetal heart rate decelerates after the uterine contractions are monitored and does not recover for a long time, it is determined that the monitoring is abnormal.

[0071] Third, the processing terminal 103 is used for:

[0072] Based on the real-time fetal heart rate change curve, judge whether there is a situation where the fetal heart rate accelerates and then falls back after lasting for a preset duration. If not, determine that the monitoring is abnormal.

[0073] Normal fetal heart rate monitoring is that the real-time fetal heart rate change curve is within the green area, and there are 3 or more peaks within the preset 20 minutes. For each peak, it corresponds to a situation where the fetal heart rate accelerates and then falls back after lasting for a preset duration. If the fetal heart rate change curve remains high or low continuously, or changes frequently, it is an abnormal state. Therefore, when it is monitored that there is a situation where the fetal heart rate accelerates and then falls back after lasting for a preset duration, it is considered that the monitoring is normal. On the contrary, if this situation is not monitored, it is considered that the monitoring is abnormal.

[0074] When any of the above-mentioned monitoring abnormalities occurs, an alarm can be given to remind the medical staff to prompt the pregnant woman to intervene. For example, it includes lying on the left side for oxygen inhalation, walking more, eating sugary foods, and so on.

[0075] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0076] The present invention provides a prenatal pregnant woman monitoring system, including: a belt for binding to the waist of a pregnant woman, including a probe array arranged at a preset position, the probe array corresponding to the position of the pregnant woman's pregnant belly, for collecting fetal heart rate, fetal movement signals and uterine contraction signals; a transmission module for transmitting the fetal heart rate, fetal movement signals and uterine contraction signals to a processing terminal; the processing terminal is connected to the belt through the transmission module, for drawing a real-time fetal heart rate change curve based on the fetal heart rate and fetal movement signals and drawing a real-time uterine contraction change curve based on the uterine contraction signals, and visually displaying; judging whether monitoring abnormalities occur based on the real-time fetal heart rate change curve and / or the real-time uterine contraction change curve, and alarming when monitoring abnormalities occur. By arranging a probe array on the belt, there is no need to worry about changes in the fetal position, and comprehensive monitoring of the fetal heart rate, fetal movement and uterine contractions is carried out to achieve efficient monitoring.

[0077] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0078] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A fetal heart rate monitoring system for pregnant women, characterized in that, Comprising: A belt for binding around the waist of a pregnant woman, including a probe array arranged at a preset position, the probe array corresponding to the position of the pregnant woman's pregnant belly, for collecting fetal heart rate, fetal movement signals and uterine contraction signals; A transmission module for transmitting the fetal heart rate, fetal movement signals and uterine contraction signals to a processing terminal; A processing terminal connected to the belt through the transmission module, for drawing a real-time fetal heart rate change curve based on the fetal heart rate and fetal movement signals and a real-time uterine contraction change curve based on the uterine contraction signals, and visually displaying them; Based on the real-time fetal heart rate change curve and / or the real-time uterine contraction change curve, determine whether monitoring abnormalities occur, and give an alarm when monitoring abnormalities occur.

2. The fetal heart rate monitoring system for pregnant women according to claim 1, wherein, The belt includes a first strap and a second strap; The probe array at the first preset position on the first strap uses a stress sensor for collecting uterine contraction signals, and the first preset position corresponds to the fundus position of the pregnant woman; The probe array at the second preset position on the second strap uses an ultrasonic probe for collecting fetal heart rate and fetal movement signals, and the second preset position corresponds to the abdomen of the pregnant woman.

3. The fetal heart rate monitoring system for pregnant women according to claim 1, wherein The belt includes a circular monitoring soft pad and a third strap connecting both ends of the circular monitoring soft pad; The circular monitoring soft pad includes an upper semi-circular area and a lower semi-circular area. The probe array arranged in the upper semi-circular area is a stress sensor, and the probe array arranged in the lower semi-circular area is an ultrasonic probe. The upper semi-circular area corresponds to the fundus position of the pregnant woman, and the lower semi-circular area corresponds to the abdomen of the pregnant woman; The third strap extends from both ends of the circular monitoring soft pad and is bound to the back of the pregnant woman.

4. The fetal heart rate monitoring system for pregnant women according to claim 3, wherein The stress sensors and ultrasonic probes are arranged at intervals on the circular monitoring soft pad.

5. The fetal heart rate monitoring system for pregnant women according to claim 1, characterized in that, The processing terminal is used for: Based on the fetal heart rate and fetal movement signals, using wavelet transform to remove electromyogram interference and using baseline correction to eliminate body position drift to obtain a preprocessed signal; Based on the preprocessed signal, extract characteristic points; Based on the characteristic points, draw a real-time fetal heart rate change curve that changes with time.

6. The fetal heart rate monitoring system for pregnant women according to claim 1, wherein, The processing terminal is used for: Based on the uterine contraction signals, extract uterine contraction change characteristics, and the uterine contraction change characteristics include uterine contraction intensity, uterine contraction frequency, uterine contraction duration and uterine contraction interval time; Based on the uterine contraction change characteristics, draw a real-time uterine contraction change curve that changes with time.

7. The fetal heart rate monitoring system for pregnant women according to claim 1, characterized in that, The processing terminal is also used for: Based on the real-time uterine contraction change curve, judge whether the change law of uterine contractions is coordinated; If not, it is determined as a monitoring abnormality.

8. The fetal heart rate monitoring system for pregnant women according to claim 1, wherein, The processing terminal is also used for: Based on the real-time uterine contraction change curve, judge whether the real-time fetal heart rate change curve shows abnormalities when uterine contractions occur; If so, it is determined as a monitoring abnormality.

9. The fetal heart rate monitoring system for pregnant women according to claim 1, characterized in that, The processing terminal is also used for: Based on the real-time fetal heart rate change curve, judge whether there is a situation where the fetal heart rate accelerates and then falls back after a preset duration; If not, it is determined as a monitoring abnormality.

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