KR101040598B1 - Blood pressure measuring device using belt type sensor and cuff - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a belt-type sensor and a blood pressure measuring device using a cuff, and a belt-type sensor and a blood pressure measuring device using the cuff according to the present invention include a belt 100 worn on a chest of a patient, A surface electrode 111 provided on the belt 100 to be in non-contact with the patient's skin and an active electrode 112 for sensing a potential difference sensed by the surface electrode 111 to measure electrocardiogram A cuff 150 equipped with a pressure sensor 151 for sensing a blood pressure and a pulse wave according to a blood flow amount inside the artery when the heart is shrunk and is worn on a forearm of a patient; And the maximum value of the electrocardiogram derived from the electrocardiogram sensing unit 110 and the signal corresponding to the maximum value among the signals sensed by the pressure sensor 151 are compared with each other, ) Judges whether the detected signal is normal or not A control unit 200 for calculating a blood pressure and a pulse; And a main body 300 in which a pressure pump 310 for applying pressure to the cuff 150 and a pressure reducing valve 320 for removing pressure generated by the pressure pump 310 are accommodated therein .

According to the blood pressure measuring apparatus using the heart-beat generating point according to the present invention as described above, it is possible to measure the blood pressure by using the belt-type sensor worn on the patient's chest when measuring the blood pressure, (Blood pressure and pulsation) values by detecting only the accurate biometric data (blood pressure and pulsation) values. Therefore, it is possible to measure accurate biometric data values even if noise is generated due to the motion or vibration of the patient.

Electrocardiogram, pulse, pulse

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a blood pressure measuring device using a belt-

The present invention relates to a blood pressure measuring device using a belt-type sensor and a cuff, and more particularly, to a blood pressure measuring device using a belt-type sensor worn on a patient's chest when measuring blood pressure and using a cuff The present invention relates to a blood pressure measuring device using a belt type sensor and a blood pressure measuring device using a cuff which can measure accurate biometric data values even when noises due to movement or vibration of a patient occur due to detection of accurate biometric data (blood pressure and pulse value) will be.

Electrocardiogram (ECG) is a measure of the activity current of a cardiac muscle during its contraction and expansion.

The action potential, which occurs when the cardiac muscle relaxes and contracts, causes a current to flow from the heart to the body. This current produces a potential difference depending on the position of the body, which is the surface electrode attached to the skin of the human body The electrocardiogram can be recorded by using an electrocardiogram measuring device which detects the electrocardiogram.

Such an electrocardiogram measuring device is used for checking the presence or absence of a heart and is one of the medical devices that are used as a basic method for measuring diseases of heart diseases such as angina pectoris, myocardial infarction and arrhythmia.

Further, the blood pressure injects air into the cuff after the cuff is wound around the arm.

When air is injected into the cuff as described above, the blood flow (blood flow) of the artery is blocked by the inflated pressure. When the air of the cuff is gradually withdrawn in this state, the arterial blood pressure, that is, the blood pressure, At the point beyond the pressure of the artery, blood flows, and at this time, pulse arises in the artery.

Such a pulse wave causes the air in the cuff to vibrate, and the pressure sensor provided on the cuff detects the pulse pulse and measures the blood pressure.

However, in the conventional blood pressure measurement method, only a signal influenced by minute pulses on the air injected into the cuff needs to be detected, and the movement of the patient or the surrounding vibration affects the cuff, There was a fear that a wrong blood pressure was measured due to mixing of signals.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electrocardiogram measuring apparatus using a belt type sensor that is worn on a patient's chest when measuring blood pressure, The present invention provides a blood pressure measuring device using a belt-type sensor and a cuff capable of measuring an accurate biometric data value even when noises due to a motion or vibration of a patient are detected because only accurate biometric data (blood pressure and pulse)

In order to solve the above-mentioned problems, a belt-type sensor and a blood pressure measuring device using a cuff according to the present invention include a belt 100 worn on a chest of a patient and worn on a top of the patient, An electrocardiogram sensing unit 110 that includes a surface electrode 111 that is not in contact with the skin of the patient and an active electrode 112 that senses a potential difference sensed by the surface electrode 111 to induce an electrocardiogram value generated during cardiac contraction; A cuff 150 mounted on the forearm of the patient and provided with a pressure sensor 151 for detecting blood pressure and pulse wave according to the blood flow inside the artery at the time of contraction of the heart; After the maximum value of the induced electrocardiogram and the signal corresponding to the maximum value among the signals sensed by the pressure sensor 151 are combined, the two values are compared to determine whether the signal sensed by the pressure sensor 151 is normal Control to judge and calculate blood pressure and pulse 200; And a main body 300 in which a pressure pump 310 for applying pressure to the cuff 150 and a pressure reducing valve 320 for removing pressure generated by the pressure pump 310 are accommodated therein .

The amplification unit 120 amplifies the electrocardiogram value of the electrocardiogram signal generated by the electrocardiogram sensing unit 110. The amplification unit 120 amplifies the electrocardiogram value amplified by the amplification unit 120, A first AD converter (A / D converter) 140 for converting an induced electrocardiogram value having noise removed by the filtering unit 130 into a digital value; And a second AD converter 152 for converting the blood pressure and pulse rate sensed by the cuff 150 into digital values.

The controller 200 includes a timer 210 installed in the main body 300 and adapted to store blood pressure and pulse values of a normal blood pressure and pulse value determined by the controller 200 according to time. And a storage unit 220. The display unit 230 displays values stored in the storage unit 220 and a printing unit 240 that prints values stored in the storage unit 220 .

The pressure pump 310 and the pressure reducing valve 320 are periodically operated according to the set time of the timer 210.

As described above, according to the present invention, by comparing the electrocardiogram derived using a belt-type sensor worn on the patient's chest when measuring blood pressure and the pulse waveform measured using the cuff to be worn on the forearm, accurate biometric data And pulsation) values. Therefore, it is possible to measure accurate biometric data values even when noise occurs due to movement or vibration of a patient.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram of a blood pressure measuring device using a belt-type sensor and a cuff according to a preferred embodiment of the present invention. FIG. 2 is a schematic view of a belt- FIG. 3 is a graph showing the electrocardiogram measured by attaching to the skin and the waveform of the electrocardiogram derived in a non-contact manner, FIG. 4 is a graph showing the waveform of electrocardiogram guided by the surface electrode and the active electrode The electrocardiogram and pulse rate are shown in Fig.

The apparatus for measuring a blood pressure using a belt type sensor and a cuff according to a preferred embodiment of the present invention includes a belt 100, an electrocardiogram sensing unit 110, a cuff 150, a control unit 200, and a main body 300, The first AD converter 140, the pressure sensor 151, the second AD converters 152, the timers 210, 210, the active electrode 112, the amplifying unit 120, the filtering unit 130, A storage unit 220, a display unit 230, a printing unit 240, a pressurizing pump 310, and a pressure reducing valve 320 may be further included.

First, the electrocardiogram sensing unit 110 installed on the belt 100 and the belt 100 will be described.

The belt 100 is worn on the chest of the patient, more particularly the patient wears a topsheet with the tops of the tops, such that the length of the belt 100 is adjusted according to the patient's chest size desirable.

1, an electrocardiogram sensing unit 110 is provided on the belt 100, that is, on an inner peripheral surface of the belt 100, And includes a surface electrode 111 and an active electrode 112, as shown in FIG.

The surface electrode 111 and the active electrode 112 as described above induce electrocardiogram values in an alternating manner and this method can be applied to the surface 10 of the belt 100 as shown in FIG. It provides convenience.

As described above, the surface electrode 111 and the active electrode 112, which guide the electrocardiogram in a noncontact manner with the skin of the patient, change the bio-potential generated during the contraction of the heart to the surface electrode 111 and the active electrode 112 So that a change in the potential difference is induced using the electrode 112.

As shown in FIG. 3, the QRS value of a capacitance-coupled electrocardiogram (CC-ECG) derived by using the present invention is a contact electrocardiogram (ECG) for measuring electrocardiogram A waveform approximately similar to the QRS value of the electrocardiogram (ECG) measured on the device is obtained, the largest and sharpest R value being measured equally.

Accordingly, in particular, the induced electrocardiogram detected using the electrocardiogram and the induced potential difference has the same QRS point (see FIG. 5) that causes cardiac contraction, so that the same result can be obtained when measuring the R-R interval.

That is, since the present invention has the same performance as that of measuring the QRS point by directly attaching the surface electrode and can be easily worn on the top of the image, it is possible to conveniently measure the electrocardiogram value while reducing the risk of infection.

The belt 100 includes an amplification unit 120 for amplifying the electrocardiogram measured as described above, a filtering unit 130 for removing noise mixed with the amplified value, And a first AD converter (A / D converter) 140 for converting the converted value into a digital signal.

Next, the cuff 150 will be described.

The cuff 150 is a member that is worn on the forearm of the patient and senses a pulse of blood in accordance with the blood flow inside the artery when the heart is contracted. The sphygmomanometer 150 is used to measure systolic pressure, diastolic pressure, , Mean blood pressure (mean pressure) and pulse rate per minute are measured.

5, the pressurizing pump 310 and the pressure reducing valve (not shown) provided in the main body 300 are installed in the upper and lower ends of the cuff 150, 320).

More specifically, when the air is injected into the cuff 150, the cuff 150 is bulged by the pressure pump 310 and presses the forearm up to a set pressure (ex: 150 mmHg, 180 mmHg, 200 mmHg) And gradually removes the air injected by the air vent 320.

When the blood passes through the cuff 150 in the process of removing air, the pressure sensor 151 shown in FIG. 1 detects the systolic blood pressure, the diastolic blood pressure, the mean blood pressure, and the pulse rate per minute.

The cuff 150 may further include a second AD converter 152 for converting the sensed value of the pressure sensor 151 into a digital value.

The blood pressure and pulse rate of the patient are measured using the pressure pump 310, the pressure reducing valve 320, and the pressure sensor 151 as described above, so that detailed description thereof will be omitted.

Next, the control unit 200 installed in the main body 300 will be described.

The control unit 200 compares and analyzes data on the electrocardiogram converted into a digital signal via the first AD converter 140 and the blood pressure and pulse transmitted from the pressure sensor 151 of the cuff 150, It is determined whether the signal detected by the pressure sensor 151 is normal or not and only the measured value is stored by time.

FIG. 4 shows a graph of induced electrocardiogram and pulse wave sensed by the electrocardiogram sensing unit 110 and the pressure sensor 151. The control unit 200 determines a portion represented by a square dotted- This is the judged value.

Normal pulsation is measured after the contraction of the heart. However, when the patient speaks or coughs during the measurement, an abnormal pulse wave irrespective of the contraction of the heart is sensed. When the abnormal pulse sensed by the pressure sensor 151 is detected, the controller 200 regards it as noise and ignores it do.

In other words, the controller 200 recognizes the pulse of the heart due to the actual heart contraction by detecting the contraction point of the heart and recognizes only the pulse of the pulse within the time considering the contraction point of the heart and the pulse wave transmission time, Or other noise is recognized as a characteristic of the control unit 200. The accuracy of the blood pressure measurement can be improved because the influence of the motion or the noise is excluded owing to this feature.

Finally, referring to FIG. 5, a flow of measuring a precise electrocardiogram, blood pressure and pulse using a belt-type sensor and a blood pressure measuring device using a cuff according to a preferred embodiment of the present invention will be described.

First, a patient wears a topsheet 10 and then applies a belt 100 to the topsheet 10, where a surface electrode 111 and an active electrode (not shown) (112), and at the same time wears the cuff (150) on the forearm of the patient.

The patient or the measurer (doctor) turns on the power switch P provided on the main body so that the surface electrode 111 and the active electrode 112, and at the same time, the pressure for pressing the forearm is set by the cuff 150, and then the blood pressure and the pulse are measured.

For reference, the main body 300 may be placed on a table in a predetermined space such as a home or a hospital. If the main body 300 is manufactured in a small size, it may be worn on the waist of a patient.

When the surface electrode 111 and the active electrode 112 are activated as described above, an electrocardiogram is induced. The electrocardiogram thus derived is amplified to the same waveform as that of the electrocardiogram via the amplification unit 120, After the noise is removed through the filtering unit 130, the digital signal is converted into a digital signal through the first AD converter 140, and the converted value is transmitted to the controller 200.

At the same time, the cuff 150 senses the blood pressure and pulse rate of the patient, and the sensed value is converted into a digital signal via the second AD converter 152, and then transmitted to the controller 200.

Thereafter, the control unit 200 compares the two transmitted values to determine whether the signal sensed by the pressure sensor 151 is normal or not. The control unit 200 sets the sensed electrocardiogram value as a reference, detects it after the cardiac contraction point R Only the detected pulse is judged as a normal value.

The main body 300 may further include a storage unit 220 having a timer 210 connected to the controller 200 and storing the normal values determined as described above according to time zones.

As described above, when the main body 300 is manufactured in a small size, since the timer and the storage unit 220 are provided as described above, the doctor or the patient can accurately know the change of the blood pressure and the pulse, And provides a convenience for the doctor to make an accurate diagnosis at the time of diagnosis.

Accordingly, the timer 210 periodically operates the pressure pump 310 and the pressure reducing valve 320 according to the set time, and measures the blood pressure and the pulse rate every hour, for example.

That is, the present invention can measure the induced electrocardiogram, blood pressure, and pulse of the patient for a short time when used in a predetermined space, and measure the induced electrocardiogram, blood pressure and pulse of the patient continuously (over 24 hours) when worn on the patient's waist There is a feature that can be.

The display unit 230 may include a display unit 230 for displaying a value stored in the storage unit as described above. When the display unit 230 is included in the display unit 230, It will be able to accurately identify the changed blood pressure and pulse shape by time or period.

The main body 300 may include a printing unit 240 for printing a value stored in the storage unit 220.

Optimal embodiments have been disclosed in the drawings and specification. Although specific terms are used herein, they are used for the purpose of describing the present invention only and are not used to limit the scope of the present invention described in the meaning of the claims or the claims. Therefore, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a blood pressure measuring apparatus using a belt-type sensor and a cuff according to a preferred embodiment of the present invention;

FIG. 2 is a schematic conceptual view showing an electrocardiogram guided using a belt-type sensor and a belt of a blood pressure measuring device using a cuff according to a preferred embodiment of the present invention;

FIG. 3 is a graph showing the electrocardiogram measured by attaching to the skin and the waveform of the ECG value induced in a non-

Fig. 4 is a graph showing the induced electrocardiogram and pulse waveform induced by using the surface electrode and the active electrode

FIG. 5 is a flow chart for measuring the induced electrocardiogram, blood pressure, and pulse shape of a blood pressure measuring apparatus using a belt-type sensor and a cuff according to a preferred embodiment of the present invention.

Description of the Related Art

100-belt 110-electrocardiograph sensing part

111-surface electrode 112-active electrode

Amplification unit 130-filtering unit

140-first AD converter 150-cuff

151-Pressure sensor

200-control unit 210-timer

220-storage unit 230 -display unit

240-

300-body 310-pressure pump

320-Pressure reducing valve

Claims (4)

A belt 100 to be worn on the chest of the patient, A surface electrode 111 provided on the belt 100 and not in contact with the patient's skin and an active electrode 112 sensing a potential difference sensed by the surface electrode 111 are provided to induce electrocardiogram An electrocardiogram sensing unit 110 A cuff 150 equipped with a pressure sensor 151 for detecting blood pressure and pulse wave according to the blood flow inside the artery when the heart is contracted when worn on the forearm of the patient; The maximum value of the electrocardiogram derived from the electrocardiogram sensing unit 110 and the signal corresponding to the maximum value among the signals sensed by the pressure sensor 151 are compared with each other, A controller 200 for determining whether a signal sensed by the blood pressure monitor 100 is normal and calculating a blood pressure and a pulse; And A main body 300 in which a pressure pump 310 for applying pressure to the cuff 150 and a pressure reducing valve 320 for removing pressure generated by the pressure pump 310 are accommodated in the main body 300 And a blood pressure measuring device using a cuff. The method according to claim 1, An amplification unit 120 provided on the belt 100 for amplifying an electrocardiogram value induced by the electrocardiogram sensing unit 110; A filtering unit 130 for removing noise of the induced electrocardiographic value amplified by the amplification unit 120; A first AD converter (A / D converter) 140 for converting the induced electrocardiogram value from which the noise is removed by the filtering unit 130 into a digital value; And And a second AD converter 152 for converting the blood pressure and the pulse rate sensed by the cuff 150 into a digital value. The method according to claim 1, The controller 200 is installed inside the main body 300, A timer 210 configured to store a normal blood pressure and a pulse value among the blood pressure and pulse rate determined by the controller 200 according to time; And a storage unit 220; A display unit 230 for displaying a value stored in the storage unit 220; And a printing unit (240) for printing a value stored in the storage unit (220). The method of claim 3, Wherein the pressure pump (310) and the pressure reducing valve (320) are periodically operated according to the set time of the timer (210).

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