KR20200137395A - Bioelectric signal measuring apparatus - Google Patents

Abstract

According to an embodiment of the present invention, a device for measuring a bioelectric signal to easily measure electrocardiogram comprises: a first branch extending in a first direction to be positioned on the sternum of a subject, and having a first electrode measuring a bioelectrical signal at a distal end; a second branch connected to the first branch and extending to be located in the left infraclavicular fossa of the subject, so that a second electrode for measuring the bioelectrical signal is located at the distal end; and a third branch connected to the first branch and extending to be located in the right infraclavicular fossa of the object so that a third electrode for measuring the bioelectrical signal is located at the distal end.

Description

Bioelectrical signal measuring device {BIOELECTRIC SIGNAL MEASURING APPARATUS}

The present technology relates to a bioelectrical signal measuring device.

The electrocardiogram refers to the analysis of the electrical activity of the heart and recording it in the form of a wavelength. The heart's muscle cells contract/relax in response to electric current, and this activity is controlled by the electric current flowing from the heart's conduction system. Therefore, it is possible to grasp the operation of the heart by analyzing the electrical activity of the heart.

The most representative elements of the conduction system of the heart are the SA node (Sinoatrial Node) and the Atrioventicular node (Atrioventicular Node). The sinus node is the basic pace maker of the heart. If it is a normal heart, the current signal occurs only in the sinus node. The AV node (Atrioventicular Node) performs the function of temporarily storing the current generated in the sinus node.

The atrioventricular nodule itself plays a role of storing the current provided by the eastern nodule, but the part where the atrioventricular nodule and the conduction system are connected can generate a current signal. If the connection part of the atrioventricular nodule suddenly emits current while the sinus node is in operation, the atrial flutter in which the atrium is not controlled, or if the condition worsens, it enters the state of atrial fibrillation.

If the atrioventricular nodule does not transmit the signal of the eastern nodule to the ventricle in time, the ventricle's beating is delayed. can not do it. If this condition is repeated, it is more likely to progress to a heart attack.

The heart performs a function by moving the atrium and ventricle by electrical stimulation. Monitoring the electrical stimulation of the heart is the same as monitoring the movement of the heart.

In the case of the prior art, the electrocardiogram was measured by attaching electrodes to the left wrist, right wrist and left ankle according to Einthoven's triangle. In this case, since the electrode must be attached to the limb, the ECG cannot be measured during the daily life of the subject.

According to the prior art of attaching the ECG detection patch to the user's chest, the ECG detection patch must be attached to the correct position. Since the method of attachment is difficult, when it is attached to the actual user, personnel who have received professional training are put in and attached by them. Therefore, it is uneconomical in terms of time and cost because the user must visit a professional manpower (or vice versa) in order to accurately measure the ECG. In another way, the user must be educated in order to use the electrocardiogram measuring device, but there have been many cases of incorrectly measuring the electrocardiogram despite the education.

The present embodiment is to solve the shortcomings of the above-described existing technology, and provides a device capable of measuring an electrocardiogram simply without a complicated education or a visit to an expert while a subject leads a daily life.

The bioelectrical signal measuring apparatus according to the present embodiment extends in a first direction so as to be positioned on the sternum of the subject, and includes a first branch, a first branch, and a first electrode measuring a bioelectrical signal at a distal end thereof. It is connected to the second branch and the first branch, which is extended to be located in the left infraclavicular fossa of the subject and where the second electrode for measuring the bioelectrical signal is located at the distal end, and the concave under the right claw of the subject And a third branch extending to be positioned at the distal end portion and in which a third electrode for measuring a bioelectrical signal is positioned.

The biometric information detection apparatus according to the present embodiment extends in a first direction so as to be located at an end of the sternum of the subject, and is connected to the first branch and the first electrode at the distal end of which a first electrode for measuring a bioelectrical signal is located, It extends to be located in the left infraclavicular fossa of the subject and is connected to the second branch and the first branch where the second electrode for measuring the bioelectrical signal is located at the distal end, and is located in the concave under the right clasp of the subject. Bioelectrical signal measurement including a third branch on which a third electrode for measuring bioelectrical signals is extended and a processing circuit for wirelessly transmitting bioelectrical signal information measured by the first electrode, the second electrode, and the third electrode Measurement of a patch and bioelectrical signal It includes a user terminal on which an application for receiving and displaying bioelectrical signal information transmitted by the patch is executed.

According to the bioelectrical signal measuring apparatus according to the present embodiment, the user can easily detect his/her bioelectrical signal while living in daily life, thereby providing an advantage of being able to monitor his/her health status.

1 is a diagram showing an outline of a bioelectric signal measuring apparatus according to the present embodiment.
2 is a diagram illustrating a state in which the bioelectric signal measuring apparatus according to the present embodiment is attached to a human body.
3 is a diagram for explaining a case of detecting a bipolar limb lead using the bioelectric signal measuring apparatus according to the present embodiment.
4 is a diagram illustrating a case of detecting a unipolar limb lead using the bioelectric signal measuring apparatus according to the present embodiment.
5 is a block diagram showing an outline of a communication unit according to the present embodiment.
6 is a diagram illustrating an overview of a connection relationship between a bioelectric signal measuring apparatus 10 and a terminal on which an application interlocked with the present embodiment is executed.

Hereinafter, an apparatus 10 for measuring a bioelectrical signal according to the present embodiment will be described with reference to the accompanying drawings. 1 is a view showing an outline of a bioelectrical signal measuring apparatus 10 according to the present embodiment, and FIG. 2 is a diagram illustrating a state in which the bioelectrical signal measuring apparatus 10 according to the present embodiment is attached to a human body to be. 1 and 2, the apparatus 10 for measuring a bioelectrical signal according to the present embodiment has a center C positioned on the sternal incision of the subject, and is positioned on the sternum (S, sternum) of the subject from the center. The first electrode 112 extending in the first direction and measuring a bioelectrical signal is connected to the first branch 110 and the first branch 110 located at the distal end, and the concave under the left latch of the subject (L , left infraclavicular fossa) and connected to the second branch 120 and the first branch 110 in which the second electrode 122 for measuring the bioelectrical signal is located at the distal end, and is concave under the right latch of the subject It includes a third branch 130 extending to be positioned at (R) and on which a third electrode 132 measuring a bioelectrical signal is positioned at a distal end.

In one embodiment, the center C of the bioelectrical signal measuring apparatus 10 has a first branch 110, a second branch 120, and a third branch 130 in the suprasternal notch of the subject. Connected centers can be located. The first branch 110 extends from the center C to be located on the sternum S of the subject, and the first electrode 112 is located at the end of the first branch 110. In one embodiment, the first electrode 112 measures a bioelectrical signal of the subject by being positioned at the xiphoid process of the subject, the end of the sternum (S), or the subject's bright tooth.

In the embodiment illustrated in FIGS. 1 and 2, the first branch 110, the second branch 120, and the third branch 130 may be connected in a Y-shape, but in an embodiment not shown, the first branch 110 The branch 110, the second branch 120, and the third branch 130 may be connected in a T-shape.

The second branch 120 has a second electrode 122 positioned at a distal end, and the second electrode 122 is positioned in a concave L below the left latch of the subject to measure the bioelectric signal of the subject. The third branch 130 has a third electrode 132 positioned at its distal end, and the third electrode 132 is positioned in a concave R below the right latch of the subject to measure the bioelectrical signal of the subject.

The first branch 110, the second branch 120 and the third branch 130 are formed on a flexible substrate, and the first electrode 112, the second electrode 122, and the third electrode 124 ) And the subject's body may have an adhesive surface attached to the body.

The bioelectrical signal measuring apparatus according to the present embodiment may detect bioelectrical signals such as electrocardiogram (ECG) and electromyography (EMG). 3 illustrates a case of bipolar limb lead by using the bioelectric signal measuring apparatus according to the present embodiment. Referring to FIG. 3, the second electrode 122 attached to the concave under the left latch (L) of the subject is used as an anode, and the third electrode 132 attached to the concave under the right latch (R) is used as the cathode. Measure the electrical signal to obtain the induction I (LEAD I).

The third electrode 132 attached to the concave R below the right clasp of the subject is used as the cathode, and the first electrode 112 located at the end of the subject's xiphoid process, the sternum (S) or the subject's bright tooth The bioelectrical signal is measured using as an anode to obtain induction II (LEAD II). In addition, the second electrode 122 attached to the concave L under the left latch of the subject is used as the cathode, and the first electrode located at the end of the subject's xiphoid process, the sternum (S), or the subject's bright tooth ( 112) is used as a positive electrode to measure bioelectrical signals to obtain induction III (LEAD III). The bipolar limb induction can be measured by performing the measurement in this way.

4 illustrates a case of unipolar limb lead using the bioelectric signal measuring apparatus according to the present embodiment. Referring to FIG. 4(a), the third electrode 132 attached to the concave under the right claw (R) is used as the anode, and the second electrode 122 disposed in the concave under the left claw (L) and the examination of the subject AVR is obtained by measuring the first electrode 112 located at the end of the sternum (S) or the subject's bright tooth with a cathode during the xiphoid process.

Referring to FIG. 4(b), the second electrode 122 attached to the left clasp lower concave (L) is used as an anode, and the third electrode 132 positioned in the right lower claw concave (R) and the examinee AVL is obtained by measuring the protrusion (xiphoid process), the end of the sternum (S), or the first electrode 112 located on the subject's name with a cathode. Referring to FIG. 4(c), the second electrode 122 attached to the concave under the left latch (L) and the third electrode 132 disposed in the concave under the right latch (R) are used as cathodes, and The aVF is obtained by measuring the protrusion (xiphoid process), the end of the sternum (S), or the first electrode 112 positioned on the subject's bright tooth with an anode. In the illustrated drawings, resistance is an electrical model of a body between each electrode and the electrode. According to the embodiment described above, bipolar limb induction of LEAD I, LEAD II and LEAD III and unipolar limb induction of aVR, aVL, and aVF can be obtained among 12 induction of electrocardiogram.

According to the conventional ECG measuring device, since the ECG measurement patch is attached to the left wrist, the right wrist, and the left ankle of the subject and measures the electrocardiogram, it is very difficult to measure the electrocardiogram during the daily life of the subject. However, according to the present embodiment, the center (C) is located on the upper sternal incisions, which are areas that the subject can easily find in their body by tactile sensation, and any of the xiphoid process or the lower part of the sternum and The first electrode 112 is placed in one place, the second electrode 122 is placed in the concave under the left latch, and the third electrode 132 is simply attached to the concave under the right latch to measure the bioelectrical signal. have.

Accordingly, it is possible to attach a bioelectrical signal measuring device without visiting a professional manpower, and it is possible to measure bioelectrical signals such as an electrocardiogram and an electromyogram during the daily life of the subject.

As an embodiment of the bioelectrical signal measuring apparatus, the bioelectrical signal measuring apparatus 10 is a processing circuit that processes an electric signal measured by the first electrode 112, the second electrode 122, and the third electrode 132 And a communication unit 114 including a communication circuit 1600 for transmitting the processed signal to the terminal of the subject (1141). 5 is a block diagram showing an outline of the communication unit 114 according to the present embodiment. 5, the biosignal readout circuit 1141 according to the present embodiment receives and amplifies the biosignal, and impedance boosting capacitors Cfa and Cfb connected in a positive feedback configuration between an output and an input. And a variable gain amplifier 1210 for amplifying a signal output by the amplifying unit with different gains according to the amplitude of the signal output from the amplifying unit 1100 and amplifying unit 1100 including a. In an embodiment, the signal processing circuit 1141 further includes an envelope signal forming unit 1300 that receives and detects a signal output from the amplifying unit 1100, and outputs an envelope to provide the variable gain amplification unit.

In one embodiment, the input signal provided to the readout circuit 1141 is a bioelectric signal of a subject, an electrocardiogram (ECG) signal detected by the first to third electrodes, and an electromyogram (EMG) detection device mounted by the wearer. It may include the detected EMG signal. The bioelectrical signal may be converted into a differential signal and provided to the readout circuit 1141 according to the present embodiment. According to another embodiment not shown, the bioelectrical signal is a single ended signal. ) Can be provided.

The coupling capacitor Cc blocks the inflow of a DC component from the biosignal provided to the readout circuit 1141 and provides the signal component to the input chopper circuit 412. The input chopper circuit 1412 receives an input signal, performs switching at a predetermined frequency and a predetermined period so that the provided input signal has a desired duty ratio, and outputs it to the amplifying unit 1100.

The amplifier 1100 receives the signal output from the input chopper circuit 1412, amplifies the signal and outputs the amplified signal. In the embodiment illustrated in FIG. 1, the amplification unit 1100 includes a capacitor Ca and a resistor Ra connected in parallel between an inverting input and a non-inverting output of an operational amplifier, and a capacitor Cb connected in parallel. The resistor Rb may be implemented as a differential integrator connected between the non-inverting input and the inverting output of the operational amplifier.

In an embodiment not shown, the amplifying unit 1100 may be a single-stage integrator in which a capacitor and a resistor connected in parallel are connected between an inverting input and an inverting output of an operational amplifier. In another embodiment not shown, the amplification unit 1100 may be implemented as a low pass filter.

The output of the amplifying unit 1100 is provided to the output chopper circuit 1414, and the output chopper circuit 1414 is a predetermined frequency and predetermined frequency so that the signal output and provided by the amplifying unit 1100 has a desired duty ratio. It is output by switching in cycle.

In the embodiment illustrated in FIG. 5, an embodiment in which an input chopper circuit 1412 and an output chopper circuit 1414 are respectively disposed at an input of an amplifying unit to an output, but according to an embodiment not shown, the amplifying unit 1100 Only one of the input chopper circuit 1412 and the output chopper circuit 1414 can be connected to the.

The output of the output chopper circuit 1414 is fed back to the input side of the amplifying unit 1100 through the impedance boost capacitors Cfa and Cfb. In the embodiment illustrated in FIG. 5, a signal output from the non-inverting output of the amplifying unit 1100 and passing through the output chopper circuit 1414 is connected to the non-inverting input side of the amplifying unit 1100 through an impedance boost capacitor Cfb. Also, a signal output from the inverting output of the amplifying unit 1100 and passing through the output chopper circuit is connected to the inverting input side of the amplifying unit 1100 through an impedance boost capacitor Cfa.

An advantage of improving the input impedance characteristics of the read-out circuit 1141 is provided by the positive feedback configuration using the impedance boost capacitors Cfa and Cfb of the amplifying unit 1100. In addition, even when the wearer of the electrocardiogram (ECG) measuring device and the electromyographic (EMG) measuring device walks or runs, the input chopper circuit 1412, the output chopper circuit 1414 and the impedance boost capacitors Cfa and Cfb are used. An advantage of being able to remove motion artifacts caused by movement of the wearer by the included amplification unit 1100 is provided.

In one embodiment, when the signal output from the output chopper circuit 1414 is a signal obtained by amplifying the ECG signal, the second switch SWb is cut off and the first switch SWa is conducted. Accordingly, the signal is provided to the variable gain amplifier 1220 along the first path P1. When the signal output from the output chopper circuit 1414 is a signal obtained by amplifying an EMG signal, the first switch SWa is cut off and the second switch SWb is conducted. Accordingly, the signal is provided to the envelope signal forming unit 1300 along the second path P2.

In an embodiment, the level detector 1210 may control the first switch SWa and the second switch SWb based on the magnitude of a signal input to the level detector 1210. As another example, the first switch SWa and the second switch SWb may be controlled by a controller (not shown).

When the signal output from the output chopper circuit 1414 is the amplified electrocardiogram signal ECG, the first switch SWa is turned on and provided to the variable gain amplifier 1220. The level detector 1210 detects the amplitude of the input signal to control the gain of the variable gain amplifier 1220, and the variable gain amplifier 1220 amplifies the provided signal and provides it to the analog-to-digital converter 1500.

When the signal output from the output chopper circuit 1414 is an amplified EMG signal, the first switch SWa is cut off, and the second switch SWb is conducted to be provided to the envelope signal forming unit 1300. The envelope signal forming unit 1300 rectifies and detects an EMG signal concentrated at a high frequency to form an envelope signal of the EMG signal and provides it to the variable gain amplifier 1220. The level detector 1210 detects the amplitude of the input signal to control the gain of the variable gain amplifier 1220, and the variable gain amplifier 1220 amplifies the provided signal and provides it to the analog-to-digital converter 1500.

The digital signal converted by the analog-to-digital converter 1500 may be provided to the communication circuit 1600 and provided to the terminal 20 of the subject. In an embodiment, the communication circuit 1600 may include a wired communication module such as a serial communication interface (SPI). In another embodiment, the processing circuit 1600 is a wireless communication interface, and may include a wireless communication module such as Zigbee, Wi-Fi, and Bluetooth.

According to an embodiment not shown, the communication unit 114 may further include any one or more of an acceleration sensor, a gravity sensor, an atmospheric pressure sensor, and a temperature sensor, from which the motion state of the user and the external environment state in which the user is located are additionally Can be detected and transmitted to the portable terminal 20.

6 is a diagram illustrating an overview of a terminal 20 on which an application interlocked with the bioelectric signal measuring apparatus 10 according to the present embodiment is executed. Referring to FIG. 6, the apparatus 10 for measuring a bioelectrical signal detects an electrocardiogram (ECG), an electromyogram (EMG), acceleration, gravity, air pressure, and temperature, and transmits it to the portable terminal 20. As described above, the bioelectrical signal measuring apparatus 10 and the terminal 20 can communicate through wireless communication protocols such as zigbee, Bluetooth, and Wi-Fi or wired communication protocols. have.

The application stored in the terminal 20 and executed in the terminal 20 analyzes data such as transmitted electrocardiogram (ECG), electromyogram (EMG) and acceleration, gravity, air pressure, and temperature. In one embodiment, the application may analyze an electrocardiogram waveform and pulse based on the transmitted electrocardiogram data, detect a user's atrial flutter or atrial fibrillation, and warn the user of a health condition. In addition, the application may display exercise information to the user, recommend exercise, and suggest an appropriate amount of exercise.

The application detects a health abnormality of the user based on data transmitted by the bioelectrical signal measuring device 10 worn by the user. When an abnormality occurs in the ECG or EMG signal from the transmitted data, the application can display the abnormality on the screen, stop exercising, instruct the user to take medication, and, if necessary, call a medical staff through an emergency phone call.

The application collects data transmitted by the bioelectrical signal measuring device 10, transmits it to a server, and accumulates the data. The accumulated bioelectrical signal data may be used to confirm medical history. In one embodiment, the accumulated bioelectrical signal data may be used to extract life pattern information, and based on this, a user may be guided to sleep, eat, take medicine, and the like. In addition, a user's exercise amount may be suggested based on the accumulated ECG data.

Although it has been described with reference to the embodiment shown in the drawings in order to help understand the present invention, this is an embodiment for implementation, is only illustrative, and a person having ordinary knowledge in the art therefrom various modifications and equivalent It will be appreciated that other embodiments are possible. Accordingly, the true technical scope of the present invention should be determined by the appended claims.

10: bioelectrical signal measuring device 20: terminal
110: first branch 112: first electrode
114: communication unit 120: the second branch
122: second electrode 130: third branch
132: third electrode 1100: amplification unit
1210: level detector 1220: variable gain amplifier
1300: envelope signal forming unit 1412: input chopper circuit
1414: output chopper circuit 1500: analog to digital converter
1600: communication circuit S: sternum
L: Concave under the left latch R: Concave under the right latch
C: center

Claims (17)

A first branch extending in a first direction so as to be positioned on a sternum of the subject, and having a first electrode measuring a bioelectrical signal at a distal end thereof;
A second branch connected to the first branch and extending to be located in a left infraclavicular fossa of the subject, and having a second electrode measuring a bioelectrical signal at a distal end thereof; and
A bioelectric signal measuring apparatus comprising a third branch connected to the first branch, extending to be positioned in a concave under the right latch of the subject, and having a third electrode measuring a bioelectric signal at a distal end thereof. The method of claim 1,
The first branch, the second branch, and the third branch are connected at a center. The method of claim 1,
The bioelectric signal measuring device disposed so that the center is located on the upper sternal incision of the subject. The method of claim 1,
The first branch, the second branch, and the third branch are arranged in one of a Y-shape and a T-shape. The method of claim 1,
The bioelectrical signal device,
A bioelectric signal measuring device having an adhesive surface formed on a surface in contact with a human body. The method of claim 1,
The first electrode is a bioelectrical signal measuring apparatus disposed to be positioned at any one of a xiphoid process, a lower part of a sternum, and a myeongchi. The method of claim 1,
The first electrode, the second electrode, and the third electrode are
Bioelectrical signal measurement device for measuring bipolar limb induction and unipolar limb induction. The method of claim 1,
The bioelectrical signal measuring device,
Bioelectrical signal measuring apparatus further comprising a processing circuit for transmitting the measured bioelectrical signal information to the user's terminal. The method of claim 1,
The bioelectrical signal,
A bioelectrical signal measuring device that is at least one of an electrocardiogram and an electromyogram. A first branch extending in a first direction so as to be located in the sternum of the subject, and in which a first electrode for measuring a bioelectrical signal is located at a distal end, and connected to the first branch, and a concave under the left clasp of the subject (left infraclavicular fossa) is extended to be positioned at the distal end of the second branch and the first branch is connected to the second electrode for measuring the bioelectrical signal, and is extended to be located in the concave below the right clasp of the subject A bioelectrical signal measuring device comprising a third branch on which a third electrode measuring a bioelectrical signal is positioned, and wirelessly transmitting bioelectrical signal information measured by the first electrode, the second electrode, and the third electrode. A bioelectric signal measurement patch including a processing circuit that performs
A biometric information detection apparatus comprising a user terminal on which an application for receiving and displaying the bioelectrical signal information transmitted by the bioelectrical signal measurement patch is executed. The method of claim 10,
The first branch, the second branch, and the third branch are connected at a center. The method of claim 11,
The biometric information detection device is arranged so that the center is located on the suprasternal notch of the subject. The method of claim 10,
The first branch, the second branch, and the third branch are arranged in one of a Y-shape and a T-shape. The method of claim 10,
The first electrode is located at any one of a xiphoid process, a lower part of a sternum, and a bright tooth of the subject. The method of claim 10,
The first electrode, the second electrode, and the third electrode are
Bipolar limb induction and unipolar limb induction are measured by biometric information detection. The method of claim 10,
The above application,
A biometric information detection device that stores the bioelectrical signal information for each measurement date and measurement time. The method of claim 10,
The above application,
A biometric information detection device that warns of the health status of the user from the bioelectrical signal information.

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