JP2001187031A - Electronic blood pressure measuring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic blood pressure measuring method which can perform an accurate measurement, and the measuring operation of which is convenient. SOLUTION: This electronic blood pressure measuring method comprises four steps (1), (2), (3) and (4), and measures a diastolic pressure and a systolic pressure in order. In the step (1), an A armband and a B armband are wound on an optional one section having blood vessel of the four limbs of a person to be measured. In the step (2), an air filling pressurization is advanced to the B armband, and when the B armband comes into contact with an arterial blood vessel, the air filling pressurization is stopped. In the step (3), the air filling pressurization is advanced to the A armband, and the pressure in the A armband is made equal to the lowest pressure in the blood vessel or larger. In this case, by a sensor in the B armband, a waveform variation is detected, and a pressure point at the time of a waveform alteration is made the diastolic pressure. In the step (4), the air filling pressurization is continuously advanced to the A armband, and the arterial blood vessel is completely pressed, and the pressure in the A armband is made equal to the maximum pressure in the blood vessel or larger. Then, a pressure point when the sensor in the B armband does not detect a blood stream any more is made the systolic pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kind of electronic blood pressure measuring method, and more particularly to a method of measuring blood pressure (maximal blood pressure, diastolic blood pressure) using two arm bands. The present invention relates to a kind of electronic blood pressure measurement method, based on the auscultation method Korothoff sound theory, with the advantage of high accuracy,
The present invention relates to an electronic blood pressure measurement method which has the advantages of easy measurement and portability of sensor detection using a vibration method, and can achieve high accuracy of measurement.

[0002]

2. Description of the Related Art In clinical practice, systolic and diastolic blood pressures are usually measured by auscultation.
method and vibration method (oscillometric)
method) is used.

Before explaining the auscultation method, Korotkoff sound was first used.
s) needs to be explained. When the cuff is wrapped around the upper arm and filled, and the stethoscope is placed on the lower arm, if the pressure of the cuff is too low, the artery is likely to be filled with blood, that is, there is a pulsation, and the stethoscope No sound can be heard. However, if the cuff pressure is sufficient and the artery closes during one phase of the heartbeat cycle, ie, the heartbeat is transmitted, the sound can be heard with the stethoscope, which is the Korotkoff sound.

[0004] When measuring blood pressure by auscultation, the pressure in the cuff is much higher than the contraction pressure of the artery to crush the artery and completely block blood flow. As a result, Korotkoff sounds cannot be heard from the lower blood vessels. A slight decrease in armband pressure caused a small amount of blood to flow into the blood vessels under the armband, where a light tapping sound was heard in synchrony with the heartbeat in the brachial artery, and a voice appeared and was connected to the armband. The pressure value indicated by the pressure gauge is set to be approximately the maximum blood pressure.

[0005] Auscultation has the advantage of high accuracy. However, auscultation requires the use of a stethoscope to hear Korotkoff sounds, which is a fundamental skill for professional healthcare professionals. However, it is not a very simple and convenient method for non-medical personnel, and thus its use in the home is not widespread.

[0006] The vibration method detects a waveform of an arterial blood vessel using an electronic sensor, and thereby estimates a blood pressure value based on variables obtained by existing experiments.

This vibration method has an advantage that it is convenient for both measurement and carrying. However, the peak systolic and diastolic blood pressure obtained are obtained by the estimated variables. This variable is consistent with most user characteristics, but is not applicable to certain specialty users, such as atherosclerosis, diabetics, and increases the probability of error once the estimation has been applied .

For this reason, there has been a demand for an electronic sphygmomanometer having both the basics of Korotkoff sound theory of auscultation and the advantage of detection using a sensor of a vibration method.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic blood pressure measurement method capable of measuring systolic blood pressure and diastolic blood pressure in order, or diastolic blood pressure and systolic blood pressure in order.

[0010]

According to a first aspect of the present invention, there is provided an electronic blood pressure measurement method comprising the following steps (1) to (4): Wrapping around any one part with blood vessels of the limbs,
(2) advancing the inflated pressurization to the B arm band and stopping the inflated pressurization when it comes into contact with the arterial blood vessel; (3) advancing the inflated pressurization to the A arm band; So that the pressure in the A cuff is equal to or greater than the minimum intravascular pressure,
At this time, the waveform change is detected by the sensor in the B arm band,
Making the pressure point at the time of waveform modification the diastolic blood pressure,
(4) Continuously inflating the A-band with air to completely pressurize the arterial blood vessels so that the pressure in the A-band is equal to or greater than the maximum intravascular pressure; Electronic blood pressure measurement, comprising the steps of: setting the pressure point when the sensor of the arm band does not detect blood flow as the systolic blood pressure; and measuring the diastolic blood pressure and the systolic blood pressure in order, comprising the above steps. And how to do it. According to a second aspect of the present invention, in the electronic blood pressure measurement method, the following steps (1) to (5) are performed, that is, (1) the A arm band and the B arm band are provided with arbitrary blood vessels of the limb of the subject. Wrapping around one part, (2) advancing inflated and pressurized to make the pressure in the A cuff larger than the maximum pressure in the arterial blood vessel, (4) when the blood flow flows in order through the A arm band and the B arm band and the sensor in the B arm band generates a signal, Making the pressure in the A arm band the systolic blood pressure; (5) A
Leakage progresses continuously to the arm band, and the lowest intravascular pressure is A
To be greater or less than the pressure in the cuff,
The step of making the pressure in the A-band as the diastolic blood pressure when the same signal as described above is detected in the B-band, comprising the above steps,
The electronic blood pressure measurement method is characterized by sequentially measuring systolic blood pressure and diastolic blood pressure.

[0011]

FIG. 1 is a flowchart of the measurement according to the present invention. It measures systolic blood pressure first and then measures diastolic blood pressure. It includes the following steps. a. The A-band 1 and the B-band 2 are wound around the upper arm of the subject as shown in FIG. b. B arm band 2 is inflated and pressurized until it comes into contact with arterial blood vessels. At this time, B arm band 2 slightly contacts arterial blood vessels and does not compress blood vessels, that is, blood flow in arteries. Flows without being pressed. Therefore, the arterial transmission waveform detected by the sensor in the B-armband 2 is calm and coincides. This is as shown in FIG. c. When air pressure is applied to the A arm band 1 and the pressure in the A arm band 1 is still equal to or less than the diastolic blood pressure (that is, the A arm band 1 pressure ≦ the minimum pressure in the blood vessel), the sensor in the B arm band 2 There is no change in the detected waveform, and when the A-band 1 is continuously pressurized to exceed the minimum pressure (that is, A-band 1 pressure ≧ intravascular minimum pressure), the arterial blood vessel is compressed. d. At this time, a sensor in the B arm band 2 detects a change in the waveform. This is as shown in FIG. 4, and the pressure point at the time of waveform modification is the diastolic blood pressure (A arm band pressure value). e. A arm band 1 is charged with air and pressurized.
The pressure on the arterial blood vessels increases continuously,
The blood flow passing through the cuff 1 is continuously reduced, and even if the blood flow decreases, the sensor in the B cuff 2 still detects the blood flow pulsation, and the A cuff 1 completely removes the arterial blood vessels. Oppress. f. At this time, a sensor in the B arm band 2 detects a blood flow that does not flow through the arterial blood vessel (that is, A arm band 1 pressure> intravascular maximum pressure). This is like the signal change shown in FIG. g. The pressure point at which no blood flow is detected is the systolic blood pressure (the pressure value of the A arm band 1). Thus, the diastolic blood pressure and the systolic blood pressure are measured in order.

Illustrated in FIG. 6 is another flow chart of the present invention, which first measures systolic blood pressure,
Further, the diastolic blood pressure is measured, and includes the following steps. (1) Wrap the A-band 1 and the B-band 2 around the upper arm of the subject. (2) Aerating and pressurizing are advanced to make the pressure in the A-arm band 1 higher than the maximum pressure in the arterial blood vessels. At this time, no signal is detected because the B arm band 2 has no blood flow. (3) The leak pressure is advanced to the A-band 1 so that the maximum pressure in the blood vessel is higher than the pressure in the A-band 1. (4) At this time, the blood flow flows through the A-band 1 and the B-band 2 sequentially, and the sensor in the B-band 2 generates a signal. (5) Judgment is made by this. The pressure in the A-arm band 1 from the state where the blood flow does not pass to the time when the blood flow passes is defined as the systolic blood pressure. (6) The leak pressure is advanced to the A-arm band 1 so that the lowest intravascular pressure is greater than or equal to the pressure in the A-arm band 1,
At this time, the blood flow flows to the B arm band 2 without any obstacle. (7) The B arm band 2 detects the same signal as described above. (8) At this time, the pressure of the A-arm band 1 is set to the diastolic blood pressure. Thus, the systolic blood pressure and the diastolic blood pressure are measured in order.

[0013]

In summary, through the method of the present invention,
The auscultation method Korotkoff sound theory can be combined with the advantages of detection with a sensor operated by the vibration method, and the accuracy of the measurement can be increased. Therefore, the present invention has novelty, inventive step, and industrial value. ing. It should be noted that the above description is for describing the embodiment of the present invention and is not intended to limit the scope of the present invention. Any modification or alteration of details that can be easily made based on the present invention is not described in the claims of the present invention. For example, the A-band and the B-band can be attached to a portion having an arbitrary blood vessel of the limb of the subject.

[Brief description of the drawings]

FIG. 1 is a flowchart of a measurement according to the present invention.

FIG. 2 is a display diagram showing a state in which two arm bands of the present invention are wound around the upper arm of a subject.

FIG. 3 is a waveform diagram of a signal that has not been detected in the B arm band of the present invention.

FIG. 4 is a waveform diagram of a change in a signal detected in the arm B of the present invention.

FIG. 5 is a waveform diagram of a signal change detected in the B arm band of the present invention.

FIG. 6 is another flowchart of the measurement of the present invention.

[Explanation of symbols]

 1 A arm band 2 B arm band

Claims (2)

[Claims] In the electronic blood pressure measurement method, the following steps (1) to (4) are carried out: (1) A arm band and a B arm band are attached to an arbitrary one provided with a blood vessel of a limb of a subject. (2) advancing inflated and pressurized on the B arm band and stopping the inflated and pressurized when it comes into contact with the arterial blood vessel; (3) inflated and pressurized on the A arm band To make the pressure in the A arm band equal to or higher than the minimum pressure in the blood vessel. At this time, a change in the waveform is detected by the sensor in the B arm band, and the pressure point at the time of waveform modification is expanded. (4) Continuously inflating and pressurizing the A arm band to completely compress the arterial blood vessels, and the pressure in the A arm band is equal to or higher than the maximum intravascular pressure. The pressure point when the sensor of the B arm band does not detect blood flow is set to be systolic blood pressure. Nasu step, the above steps comprises, and measuring the diastolic blood pressure, systolic blood pressure in the order, the electronic blood pressure measurement method. 2. In the electronic blood pressure measurement method, the following steps (1) to (5) are carried out: (1) A arm band and a B arm band are attached to any one of blood vessels of a limb of a subject. (2) advancing aerating and pressurizing to increase the pressure in the A-arm girder than the maximum pressure in the arterial blood vessel; High pressure is A
(4) the pressure of the A-band when the blood flow flows through the A-band and the B-band in order and the sensor in the B-band generates a signal; (5) The leak pressure is continuously advanced to the A-band, so that the minimum intravascular pressure is larger or smaller than the pressure in the A-band. An electronic blood pressure measurement method comprising: a step of setting the pressure of the A-arm band to the diastolic blood pressure when detecting the same signal as described above; and a step of measuring the systolic blood pressure and the diastolic blood pressure in order.