KR102099501B1 - Device for monitoring preterm birth risk, and Method and recording medium applying the same - Google Patents

Abstract

Provided are a preterm risk monitoring device and a premature birth monitoring method and recording medium applied thereto. This preterm birth risk monitoring device extracts the maternal electrocardiogram component for each electrode from the abdominal biometric signal for each electrode, corrects the extracted maternal electrocardiogram component for each electrode, and removes the corrected maternal electrocardiogram component for each electrode. By acquiring, it is possible to detect the risk of preterm birth using the obtained uterine electromyography signal, it is possible to improve the accuracy of uterine electromyography and to improve the fetal electrocardiogram extraction accuracy.

Description

Device for monitoring preterm birth risk, and Method and recording medium applying the same}

The present invention relates to a preterm birth risk monitoring device and a premature birth monitoring method and recording medium applied thereto, and more particularly, a preterm risk monitoring device for detecting preterm birth risk using a uterine EMG signal and a premature birth monitoring method and recording medium applied thereto It is about.

The contents described in this section merely provide background information for the present embodiment, and do not constitute a prior art.

Conventional premature birth monitoring includes a method of monitoring the uterine pressure by inserting an invasive pressure measurement catheter into the uterus, and a TOCO dynamometer method that measures the pressure change during uterine contraction by wearing an abdominal pressure gauge applying the proximity sensor principle to the abdomen of a pregnant woman. Premature birth monitoring is the mainstream. However, this method is invasive or has a limitation in spreading the market due to lack of patient convenience to measure in daily life outside the hospital through a wired method.

Accordingly, it is required to seek a method for monitoring the risk of premature birth that can be measured more accurately with less inconvenience to the patient.

Patent Publication KR 10-2016-0014567 A

The present invention has been devised to solve the above problems, and an object of the present invention is to extract the matrix ECG component for each electrode from the abdominal biometric signal for each electrode, correct the extracted matrix ECG component for each electrode, and for each electrode. It is to provide a uterine electromyography signal by removing a calibrated maternal electrocardiogram component from a biosignal, and to provide a preterm birth risk monitoring device for detecting a preterm birth risk using the obtained uterine electromyography signal, and a premature birth monitoring method and recording medium applied thereto.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description. Will be able to.

According to an embodiment of the present invention for achieving the above object, the preterm birth risk monitoring device, an input unit for receiving the abdominal biological signal from a plurality of electrodes; And extracting the maternal electrocardiogram component for each electrode from the abdominal biosignal for each electrode, correcting the extracted maternal electrocardiogram component for each electrode, and removing the corrected maternal electrocardiogram component for each electrode, thereby obtaining the uterine electromyogram signal and obtaining It includes; a control unit for detecting the risk of preterm birth using the uterine electromyography signal.

In addition, the control unit may correct the extracted body ECG component for each electrode by applying a weight for each electrode according to the positions of the plurality of electrodes.

In addition, the control unit may adjust the weight of each electrode so that the peak value of the matrix ECG component for each electrode is equal to the peak value of the matrix ECG component of the reference electrode.

Further, the reference electrode may be an electrode positioned at the closest distance from the heart.

In addition, the control unit extracts the fetal electrocardiogram component for each electrode from the abdominal biosignal for each electrode, determines the electrode corresponding to the fetal electrocardiogram having the highest peak value among the extracted fetal electrocardiograms for each electrode, and acquires the largest fetal electrocardiogram signal and The risk of preterm birth may be detected using the EMG signal.

And, it is disposed on the mother's body may further include an acceleration sensor for detecting the movement of the fetus.

In addition, the controller may exclude the uterine electromyography signal during a period in which the movement of the fetus is detected from the acceleration sensor.

In addition, a temperature sensor disposed on the mother's body to detect the mother's body temperature may further include a preterm birth risk using the detected mother's body temperature information and the acquired uterine electromyography signal.

In addition, a portion to which a plurality of electrodes are connected may be made of a flexible material.

On the other hand, according to an embodiment of the present invention, the premature birth risk monitoring method comprises: receiving an abdominal biometric signal from a plurality of electrodes; Extracting a matrix electrocardiogram component for each electrode from the abdominal biometric signal for each electrode; Correcting the matrix electrocardiogram component for each extracted electrode; Obtaining a uterine electromyography signal by removing the corrected maternal electrocardiogram component from each electrode's abdominal biosignal; And detecting the risk of preterm birth using the obtained uterine electromyography signal.

On the other hand, according to an embodiment of the present invention, the computer-readable recording medium, the step of receiving the abdominal biological signal from a plurality of electrodes; Extracting a matrix electrocardiogram component for each electrode from the abdominal biometric signal for each electrode; Correcting the matrix electrocardiogram component for each extracted electrode; Obtaining a uterine electromyography signal by removing the corrected maternal electrocardiogram component from each electrode's abdominal biosignal; And detecting the preterm birth risk using the obtained uterine electromyography signal. A computer program performing a preterm birth risk monitoring method is included.

On the other hand, according to an embodiment of the present invention, the preterm birth risk monitoring device, a plurality of electrodes attached to the abdomen of the mother to sense the abdominal biological signal; An input unit that receives an abdominal biological signal from a plurality of electrodes; And extracting the maternal electrocardiogram component for each electrode from the abdominal biosignal for each electrode, correcting the extracted maternal electrocardiogram component for each electrode, and removing the corrected maternal electrocardiogram component for each electrode, thereby obtaining the uterine electromyogram signal and obtaining It includes; a control unit for detecting the risk of preterm birth using the uterine electromyography signal.

According to various embodiments of the present invention, the mother electrocardiogram component for each electrode is extracted from the abdominal biometric signal for each electrode, the mother electrocardiogram component for each electrode is corrected, and the corrected mother electrocardiogram component for each electrode is removed. It is possible to improve the accuracy of uterine electromyography by obtaining an electromyography signal and providing a preterm birth risk monitoring device that detects preterm birth risk using the acquired uterine electromyography signal, and a premature birth monitoring method and recording medium applied thereto. The accuracy of ECG extraction can be improved.

The effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the following description. will be.

Included as part of the detailed description to aid understanding of the present invention, the accompanying drawings provide embodiments of the present invention and describe the technical features of the present invention together with the detailed description.
1 is a block diagram schematically showing the configuration of a preterm birth risk monitoring apparatus according to an embodiment of the present invention;
2 is a view schematically showing a state in which a preterm birth risk monitoring device composed of four electrodes is disposed on the abdomen of a mother, according to an embodiment of the present invention;
3 is a view showing a side view of a preterm birth risk monitoring apparatus according to an embodiment of the present invention,
4 is a flowchart provided to explain a method for monitoring preterm birth risk according to an embodiment of the present invention, and
5 is a diagram illustrating a process of correcting a matrix electrocardiogram component for each electrode according to an embodiment of the present invention.

In order to clarify the features and advantages of the problem solving means of the present invention, the present invention will be described in more detail with reference to specific embodiments of the present invention shown in the accompanying drawings.

However, in the following description and attached drawings, detailed descriptions of well-known functions or configurations that may obscure the subject matter of the present invention are omitted. In addition, it should be noted that the same components throughout the drawings are indicated by the same reference numerals as much as possible.

The terms and words used in the following description and drawings should not be interpreted as being limited to ordinary or dictionary meanings, and the inventor can appropriately define the concept of terms for explaining his or her invention in the best way. Based on the principle that it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Therefore, the configuration shown in the embodiments and drawings described in this specification is only one of the most preferred embodiments of the present invention, and does not represent all of the technical spirit of the present invention, and thus can replace them at the time of application. It should be understood that there may be equivalents and variations.

In addition, terms including ordinal numbers such as first and second are used to describe various components, and are used only to distinguish one component from other components, and to limit the components It is not used. For example, the second component may be referred to as a first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as a second component.

In addition, when referring to a component being "connected" or "connected" to another component, it means that it can be connected or connected logically or physically.

In other words, it may be understood that a component may be directly connected to or connected to other components, but other components may exist in the middle and may be connected or connected indirectly.

In addition, terms such as “comprises” or “have” as described herein are intended to designate the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, or one or more thereof. It should be understood that the above or other features or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

In addition, terms such as “… unit”, “… group”, and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. have.

In addition, "a (a or an)", "one (one)," "the (the)" and analogs are different in the context of describing the present invention (especially in the context of the following claims) as otherwise indicated herein. It may be used in a sense including both singular and plural unless it is or is clearly contradicted by the context.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

1 is a block diagram schematically showing the configuration of a premature birth risk monitoring apparatus 100 according to an embodiment of the present invention.

As illustrated in FIG. 1, the preterm birth risk monitoring device 100 includes a plurality of electrodes 110_1 to 100_N, a Ref electrode 111, an input unit 120, an acceleration sensor 130, a temperature sensor 140, and a control unit ( 150), and a communication unit 160. Here, the plurality of electrodes 110_1 to 100_N and the Ref electrode 111 may be implemented as an integral or detachable type in the preterm birth risk monitoring device 100.

A plurality of electrodes (110_1 ~ 100_N) is attached to the abdomen of the mother to detect the abdominal biological signal. Here, the abdominal biological signal indicates signals measured at the abdomen, and is measured using electrical signals such as voltage or current between electrodes. Abdominal biosignals are caused by EHG (electrohysterography) signals, which are signals generated by the mother's uterine contraction, maternal electrocardiogram (mECG) signals, which are signals caused by the heartbeat of the mother, and the heartbeat of the fetus. It includes a fetal electrocardiogram (fECG) signal, which is a signal to be signaled, and may also include a signal by fetal movement.

As illustrated in FIG. 1, the plurality of electrodes may include a total of N electrodes (N is a natural number), and in addition, the Ref electrode 111 serves to generate and transmit a reference signal.

The plurality of electrodes 110_1 to 100_N measure and transmit N abdominal bio signals to the input unit 120.

The input unit 120 receives abdominal biometric signals from a plurality of electrodes 110_1 to 100_N and a Ref electrode 111 through wired or wireless communication. That is, the input unit 120 receives N abdominal biological signals. Also, the input unit 120 may receive a reference signal from the Ref electrode 111. For example, in the case of wireless communication, Wi-Fi or Bluetooth may be used. Then, the input unit 120 transmits the input abdominal biological signal to the control unit 150.

The acceleration sensor 130 is disposed on the mother's body to sense the movement of the fetus. Here, the acceleration sensor 130 is a sensor that measures a user's movement with an acceleration value. Various types of acceleration sensors 130 may be applied, and for example, an inertial acceleration sensor, a gyro acceleration sensor, a silicon semiconductor acceleration sensor, or the like may be applied according to a detection method. Then, the acceleration sensor 130 transmits the measured motion information of the fetus to the control unit 150 through wired or wireless communication.

The temperature sensor 140 is disposed on the mother's body to detect the mother's body temperature. Then, the temperature sensor 140 transmits the sensed body temperature information to the control unit 150 through wired or wireless communication.

The control unit 150 controls the overall operation of the preterm birth risk monitoring device 100. Specifically, the controller 150 extracts the maternal electrocardiogram component for each electrode from the abdominal biometric signal for each electrode, corrects the maternal electrocardiogram component for each electrode, and removes the corrected maternal electrocardiogram component for each electrode. The signal is acquired, and the preterm birth risk is detected using the acquired EMG signal. Since the uterine electromyography (EHG) signal is a signal generated by the mother's uterine contraction, the control unit 150 can detect the degree of uterine contraction using the uterine electromyography signal, thereby detecting the risk of preterm birth. do.

First, the controller 150 extracts a matrix ECG component for each electrode from the abdominal biometric signal for each electrode. Here, the maternal electrocardiogram component represents a signal component generated by the heartbeat of the mother, and since the electrocardiogram signal by the heartbeat has a certain pattern, the controller 150 uses a signal processing method such as pattern matching. The component of the ECG signal corresponding to the pattern is extracted.

The size of the maternal electrocardiogram component varies depending on the position of the electrode. The closer the maternal heart is, the larger the maternal electrocardiogram component is, and the smaller the maternal electrocardiogram component, the smaller the maternal electrocardiogram component. Accordingly, the controller 150 corrects the extracted parental ECG component for each electrode by applying a weight for each electrode according to the positions of the plurality of electrodes 110_1 to 110_N. Specifically, the controller 150 adjusts the weight of each electrode so that the peak value of the matrix ECG component for each electrode is equal to the peak value of the matrix ECG component of the reference electrode. Here, the reference electrode may be set as the electrode located at the closest distance from the heart. As described above, since the matrix ECG components have different sizes for each electrode, the controller 150 performs correction through signal processing so that the matrix ECG components for each electrode have the same size. Through this, the controller 150 can accurately extract and remove the maternal electrocardiogram component from the abdominal biosignal, thereby more accurately acquiring the uterine electromyography signal.

In addition, the controller 150 extracts the fetal electrocardiogram component for each electrode from the abdominal biosignal for each electrode, determines the electrode corresponding to the fetal electrocardiogram having the highest peak value among the extracted fetal electrocardiograms for each electrode, the largest fetal electrocardiogram signal and Preterm birth risk is detected using the acquired EMG signal. The fetus electrocardiogram (fECG) signal is a signal generated by the heartbeat of the fetus. Therefore, the electrode with the largest peak value of the fetal electrocardiogram becomes the electrode positioned closest to the position of the fetus. Accordingly, the controller 150 estimates the position of the fetus by using the fetal ECG signal having the largest peak value, and detects the risk of preterm birth depending on whether the position of the fetus is close to the entrance of the uterus. In addition, the controller 150 checks the heartbeat state of the fetus by using the fetal ECG signal having the highest peak value and detects whether there is a risk of premature birth.

Then, the controller 150 corrects the uterine electromyography signal according to the motion information of the fetus sensed by the acceleration sensor 130. This is because it is difficult to obtain a proper EMG signal due to noise generated by the movement of the fetus. Accordingly, the controller 150 may exclude the uterine electromyography signal during the period in which the movement of the fetus is detected from the acceleration sensor. In addition, the controller 150 may obtain the compensated uterine electromyography signal by compensating the uterine electromyography signal with the movement information of the fetus during a period in which the movement of the fetus is detected from the acceleration sensor. Through this, the controller 150 may reflect the movement of the fetus to improve the accuracy of the EMG signal.

In addition, the control unit 150 may detect the risk of premature birth using the temperature information of the mother detected by the temperature sensor 140 and the acquired EMG signal. The lower the mother's body temperature, the higher the risk of premature birth. Therefore, the control unit 150 may detect the preterm birth risk by further considering the body temperature of the mother as well as the uterine electromyography signal, thereby increasing the prediction accuracy of the preterm birth risk.

In this way, the controller 150 may detect the risk of premature birth in consideration of the uterine electromyography signal, fetal electrocardiogram signal, fetal motion information, and mother's body temperature information obtained by removing the maternal electrocardiogram component.

The communication unit 160 transmits information on preterm birth risk and related signals detected by the control unit 150 to the user's mobile phone 10 through wired or wireless communication. The communication unit 160 receives data using various communication methods such as Ethernet, wireless LAN, internal network, Internet, mobile communication, and Bluetooth.

2 is a view schematically showing a state in which a preterm birth risk monitoring device composed of four electrodes is disposed on a mother's abdomen according to an embodiment of the present invention.

In the case of Figure 2, the first electrode 110_1, the second electrode 110_2, the third electrode 110_3 and the fourth electrode 110_4, the preterm birth risk monitoring device 100 including a total of four electrodes mock up The case where the abdomen is attached is illustrated, and it can be confirmed that the Ref electrode 111 is also included.

3 is a view showing a side view of the premature birth risk monitoring apparatus 100 according to an embodiment of the present invention. As illustrated in FIG. 3, the preterm birth risk monitoring device 100 is made of a flexible material in which a plurality of electrodes are connected.

As shown in FIG. 3, the main part of the preterm birth risk monitoring device 100 is disposed on a general hard printed circuit board (PCB), and the flexible printed circuit is attached to the part where the electrodes 110_1 and 110_2 are fastened around it. The substrate (PCB) connection parts 115_1 and 115_2 are disposed, and the flexible printed circuit board (PCB) connection parts 115_1 and 115_2 include a disposable electrode pad fastening part capable of attaching a disposable detachable electrode. The flexible printed circuit board (PCB) connecting portions 115_1 and 115_2 are portions that can be bent or folded, and are arranged to improve adhesion to the curved surface of the abdomen of the mother. The flexible printed circuit board (PCB) connection units 115_1 and 115_2 having such a structure may be included in the preterm birth risk monitoring device 100.

In FIG. 2 and FIG. 3, the preterm birth risk monitoring device 100 may obtain an abdominal biosignal using the voltage difference between electrodes as follows.

S1 = first electrode voltage-second electrode voltage

S2 = 2nd electrode voltage-3rd electrode voltage

S3 = 3rd electrode voltage-4th electrode voltage

S4 = 4th electrode voltage-1st electrode voltage

In this case, the components of the signal obtained from each electrode are as follows.

First electrode abdominal biosignal = first uterine electrocardiogram (EHG_1) + first maternal electrocardiogram (mECG_1) + first fetal electrocardiogram (fECG_1)

Second electrode abdominal biosignal = second uterine electrocardiogram (EHG_2) + second maternal electrocardiogram (mECG_2) + second fetal electrocardiogram (fECG_2)

3rd electrode abdominal biosignal = 3rd uterine electrocardiogram (EHG_3) + 3rd maternal electrocardiogram (mECG_3) + 3rd fetal electrocardiogram (fECG_3)

4th electrode abdominal biosignal = 4th uterine electrocardiogram (EHG_4) + 4th maternal electrocardiogram (mECG_4) + 4th fetal electrocardiogram (fECG_4)

Since the magnitude of the maternal electrocardiogram (mECG) signal decreases as the distance from the heart position among the four electrodes attached to the abdomen of the mother decreases, the preterm birth risk monitoring device 100 applies the weight of each electrode position to correct the position of the maternal ECG. (mECG) Correcting the peak value increases accuracy. A detailed process will be described with reference to FIGS. 4 and 5.

4 is a flowchart provided to explain a method for monitoring preterm birth risk according to an embodiment of the present invention.

First, the preterm birth risk monitoring device 100 receives an abdominal biological signal from a plurality of electrodes (S410).

Subsequently, the preterm birth risk monitoring apparatus 100 performs a step of correcting the matrix ECG component for each extracted electrode. Specifically, the preterm birth risk monitoring apparatus 100 extracts the nth maternal electrocardiogram component (mECG_n) from the abdominal biosignal of the nth electrode (S421). Here, n represents one of the natural numbers from 1 to N. Then, the preterm birth risk monitoring apparatus 100 adds a specific unit value (eg, 0.01) to the weight to multiply the peak value of the nth maternal electrocardiogram component (mECG_n) (S423). Then, the preterm birth risk monitoring apparatus 100 checks whether the corrected nth matrix ECG component (mECG_n) is the same value as the reference matrix ECG of the reference electrode (mECG_1) (S425). If the two values are different (S425-N), the preterm birth risk monitoring device 100 performs step S423 again. On the other hand, when the two values are the same (S425-Y), the preterm birth risk monitoring device 100 removes the corrected nth maternal electrocardiogram component (mECG_n) from the abdominal biosignal of the nth electrode (S430). The preterm birth risk monitoring device 100 performs steps S421 to S430 for all electrodes. 5 is a diagram illustrating a process of correcting a matrix electrocardiogram component for each electrode according to an embodiment of the present invention. As illustrated in FIG. 5, the preterm birth risk monitoring device 100 increases the weight of each electrode by a specific unit until the peak value of the matrix ECG component for each electrode is equal to the peak value of the matrix ECG component of the reference electrode (mECG_1). You will adjust as you repeat the process.

Again, returning to FIG. 4, then, the preterm birth risk monitoring device 100 extracts the fetal ECG signal for each electrode from the abdominal biological signals for each electrode of all electrodes (S441). Then, the preterm birth risk monitoring device 100 compares the peak size of the fetal ECG signal for each electrode (S443), and selects the electrode having the maximum peak value (S445).

Through this process, the preterm birth risk monitoring device 100 extracts the fetal electrocardiogram component for each electrode from the abdominal biosignal for each electrode, and determines the electrode corresponding to the fetal electrocardiogram having the highest peak value among the extracted fetal electrocardiograms for each electrode. (S450), the prenatal risk is detected using the largest fetal electrocardiogram signal and the acquired uterine electromyography signal.

Thereafter, the preterm birth risk monitoring apparatus 100 corrects the uterine electromyography signal according to the movement information of the fetus sensed by the acceleration sensor 130 (S460).

Through this process, the preterm birth risk monitoring device 100 obtains the final EMG signal by removing the corrected ECG component from the abdominal biometric signal for each electrode (S470), and preterm birth using the obtained EMG signal You sense danger.

As described above, the preterm birth risk monitoring apparatus 100 adjusts by repeating the process of increasing the weight for each electrode by a specific unit until the peak value of the matrix ECG component for each electrode is equal to the peak value of the matrix ECG component of the reference electrode. .

Through this, the preterm birth risk monitoring apparatus 100 can accurately extract and remove the maternal electrocardiogram component from the abdominal biosignal, thereby more accurately acquiring the uterine electromyography signal.

On the other hand, of course, the technical idea of the present invention can be applied to a computer-readable recording medium containing a computer program that performs a function of the preterm risk monitoring device and a premature risk monitoring method according to the present embodiment. Further, the technical idea according to various embodiments of the present disclosure may be implemented in the form of computer-readable programming language codes recorded on a computer-readable recording medium. The computer-readable recording medium can be any data storage device that can be read by a computer and stores data. Of course, the computer-readable recording medium may be a ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical disk, hard disk drive, flash memory, solid state disk (SSD), or the like. In addition, computer-readable codes or programs stored in a computer-readable recording medium may be transmitted through a network connected between computers.

Although this specification and drawings describe exemplary device configurations, the functional operations and subject implementations described herein are implemented in other types of digital electronic circuitry, or include the structures disclosed herein and their structural equivalents. Computer software, firmware, or hardware, or a combination of one or more of them.

Therefore, although the present invention has been described in detail with reference to the above-mentioned examples, those skilled in the art to which the present invention pertains may make modifications, alterations, and modifications to these examples without departing from the scope of the present invention.

In addition, although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. In addition, various modifications can be implemented by those skilled in the art, and these modifications should not be individually understood from the technical idea or prospect of the present invention.

100: premature risk monitoring device
110_1 ~ 110_N: Electrode
111: Ref electrode
115_1, 115_2: Flexible printed circuit board (PCB) connection
120: input unit
130: acceleration sensor
140: temperature sensor
150: control unit
160: communication unit
10: mobile phone

Claims (12)

An input unit that receives an abdominal biological signal from a plurality of electrodes; And
The uterine electromyogram signal is obtained by extracting the maternal electrocardiogram component for each electrode from the abdominal biosignal for each electrode, correcting the extracted maternal electrocardiogram component for each electrode, and removing the corrected maternal electrocardiogram component from the electrode for each electrode. Includes; a control unit for detecting the risk of premature birth using the EMG signal,
The control unit,
The weight of each electrode is applied according to the position of a plurality of electrodes to correct the extracted parental ECG component for each electrode, and the weight of each electrode until the peak value of the parent ECG component of each electrode is equal to the peak value of the parent ECG component of the reference electrode. Premature birth risk monitoring device, characterized in that by repeating the process of increasing the specific unit by adjusting the weight for each electrode.
delete delete The method according to claim 1,
The reference electrode,
Premature birth risk monitoring device, characterized in that the electrode located at the closest distance from the heart.
The method according to claim 1,
The control unit,
Extract the fetal electrocardiogram component for each electrode from the abdominal biosignal for each electrode, determine the electrode corresponding to the fetal electrocardiogram with the highest peak value among the extracted electrocardiograms for each electrode, and use the largest fetal electrocardiogram signal and the acquired uterine electromyogram signal Premature birth risk monitoring device characterized in that by detecting the premature risk.
The method according to claim 1,
Premature birth risk monitoring device, characterized in that it further comprises an acceleration sensor that is arranged on the body of the mother to detect the movement of the fetus.
The method according to claim 6,
The control unit,
Premature birth risk monitoring device, characterized in that to exclude the uterine electromyography signal during the period in which the movement of the fetus is detected from the acceleration sensor.
The method according to claim 1,
Further comprising a temperature sensor disposed on the mother's body to detect the temperature of the mother's body,
Preterm birth risk monitoring device characterized in that it detects the risk of preterm birth using the detected body temperature information of the mother and the acquired EMG signal.
The method according to claim 1,
Premature birth risk monitoring device, characterized in that the part where the plurality of electrodes are connected is made of a flexible material.
In the method for monitoring the risk of premature birth by a preterm risk monitoring device,
Receiving an abdominal biometric signal from a plurality of electrodes;
Extracting a matrix electrocardiogram component for each electrode from the abdominal biometric signal for each electrode;
Correcting the matrix electrocardiogram component for each extracted electrode;
Obtaining a uterine electromyography signal by removing the corrected maternal electrocardiogram component from each electrode's abdominal biosignal; And
It includes; detecting the risk of preterm birth using the obtained uterine electromyography signal;
The steps to calibrate,
The weight of each electrode is applied according to the position of a plurality of electrodes to correct the extracted parental ECG component for each electrode, and the weight of each electrode until the peak value of the parent ECG component of each electrode is equal to the peak value of the parent ECG component of the reference electrode. Premature birth risk monitoring method characterized in that by repeating the process of increasing the specific unit by adjusting the weight for each electrode.
In a computer-readable recording medium containing a computer program for performing a method for monitoring the risk of premature birth by the preterm risk monitoring device,
Receiving an abdominal biometric signal from a plurality of electrodes;
Extracting a matrix electrocardiogram component for each electrode from the abdominal biometric signal for each electrode;
Correcting the matrix electrocardiogram component for each extracted electrode;
Obtaining a uterine electromyography signal by removing the corrected maternal electrocardiogram component from each electrode's abdominal biosignal; And
It includes; detecting the risk of preterm birth using the obtained uterine electromyography signal;
The steps to calibrate,
The weight of each electrode is applied according to the position of a plurality of electrodes to correct the extracted parental ECG component for each electrode, and the weight of each electrode is obtained until the peak value of the parent ECG component of each electrode is equal to the peak value of the parent ECG component of the reference electrode. A computer-readable recording medium containing a computer program that performs a premature birth risk monitoring method, characterized by adjusting the weight of each electrode while repeating the process of incrementing each unit by a specific unit.
A plurality of electrodes attached to the abdomen of the mother to sense the abdominal biological signal;
An input unit that receives an abdominal biological signal from a plurality of electrodes; And
The uterine electromyogram signal is obtained by extracting the maternal electrocardiogram component for each electrode from the abdominal biosignal for each electrode, correcting the extracted maternal electrocardiogram component for each electrode, and removing the corrected maternal electrocardiogram component from the electrode for each electrode. Includes; a control unit for detecting the risk of premature birth using the EMG signal,
The control unit,
The weight of each electrode is applied according to the position of a plurality of electrodes to correct the extracted parental ECG component for each electrode, and the weight of each electrode until the peak value of the parent ECG component of each electrode is equal to the peak value of the parent ECG component of the reference electrode. Premature birth risk monitoring device, characterized in that by repeating the process of increasing the specific unit by adjusting the weight for each electrode.

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