JP2004223108A - Sphygmomanometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sphygmomanometer, or particularly a portable sphygmomanometer which can measure blood pressure so as to evaluate a blood pressure reactivity in the ordinary life. <P>SOLUTION: A posture change and a body activity are detected by sensors 14, 15 and with the posture change and the body activity as a reference, blood pressure is measured and recorded together with the results detected by the sensors 14, 15. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sphygmomanometer, and is particularly applicable to a portable sphygmomanometer. The present invention can evaluate blood pressure responsiveness in daily life by detecting posture change and physical activity by a sensor, measuring blood pressure based on these posture change and physical activity, and recording it together with the detection result by the sensor. Be able to measure blood pressure.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a sphygmomanometer, which is one of health care instruments, is used to prevent diseases such as stroke, in which high blood pressure is a risk factor. That is, in the user, the systolic blood pressure and the diastolic blood pressure measured by the sphygmomanometer are determined based on, for example, a blood pressure classification of WHO (World Health Organization) to determine hypertension or the like. It is designed to determine whether or not it has changed abnormally and use it for health management.
[0003]
In such a sphygmomanometer, the blood pressure is measured by a user, an operator's operation, or by a timer, and the blood pressure is measured quickly and accurately by keeping the body still and maintaining a constant cardiac load during the measurement. It is made to measure. In contrast, for example, in a treadmill test, such a constant load is applied by walking to measure the blood pressure. At present, some hospitals adopt a method in which the tilt table is tilted to change the posture of a sleeping patient, and a change in blood pressure before and after the posture is detected to examine a nerve regulation function.
[0004]
On the other hand, for example, Japanese Patent Application Laid-Open No. 2002-136486 proposes a method of processing the measurement result of such a sphygmomanometer to evaluate the degree of arteriosclerosis.
[0005]
[Patent Document 1]
JP 2002-136486 A
[Problems to be solved by the invention]
By the way, when judging the risk of stroke, the response of blood pressure to various state changes in daily life, or the response of blood pressure to various state changes and load changes in daily life (hereinafter, blood pressure responsiveness in daily life) It is important to evaluate For this reason, it is desired to measure the blood pressure responsiveness in such a daily life so that the blood pressure responsiveness can be evaluated. For this purpose, it is necessary to measure the response of the blood pressure to the physical activity and the posture change in the daily life. it is conceivable that.
[0007]
However, conventional blood pressure measurement using a sphygmomanometer cannot evaluate such blood pressure responsiveness in daily life, and a slight increase in blood pressure response to quantified exercise and recovery in blood pressure measurement using a treadmill test. The reaction could only be evaluated.
[0008]
The present invention has been made in view of the above points, and an object of the present invention is to propose a sphygmomanometer capable of measuring a blood pressure so that blood pressure responsiveness in daily life can be evaluated.
[0009]
[Means for Solving the Problems]
In order to solve this problem, the invention according to claim 1 is applied to a sphygmomanometer to detect a change in body posture and / or physical activity, a blood pressure measurement unit, and A control unit that controls the operation of the blood pressure measurement unit based on a posture change and / or a physical activity and acquires a blood pressure measurement result from the blood pressure measurement unit, and records the blood pressure measurement result together with a detection result by the corresponding sensor. Recording means.
[0010]
According to the configuration of claim 1, a sensor that is applied to a sphygmomanometer and detects a change in body posture and / or physical activity, a blood pressure measurement unit, and the posture change and / or physical activity based on a detection result by the sensor. By controlling the operation of the blood pressure measuring means as a reference, the control means for obtaining a blood pressure measurement result from the blood pressure measuring means, if the physical activity occurs in daily life, changes in blood pressure with respect to posture changes. Measurement can be performed, whereby an abnormal reaction can be notified by an alarm or the like, and the evaluation result of the measurement result can be notified in real time. Further, by providing recording means for recording the blood pressure measurement result together with the detection result by the corresponding sensor, it is possible to evaluate a change in blood pressure in response to such physical activity and posture change at a later date. Blood pressure can be measured in such a way that blood pressure responsiveness can be evaluated.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
[0012]
(1) Configuration of Embodiment FIG. 2 is a block diagram showing a portable sphygmomanometer according to a first embodiment of the present invention. The sphygmomanometer 1 measures blood pressure so that blood pressure responsiveness in daily life can be evaluated. Therefore, in the sphygmomanometer 1, the cuff 2 wound around the upper arm of the subject is connected to the sphygmomanometer main body 3 by an air tube, and the cuff 2 and the sphygmomanometer main body 3 are integrally configured.
[0013]
In the configuration of the sphygmomanometer 1, the configuration related to the measurement of blood pressure and pulse is the same as that of the existing oscillometric sphygmomanometer. At a set time, the blood pressure and the pulse are automatically measured, or the blood pressure and the pulse are measured by operating the start switch 10, and the measured blood pressure and the pulse are displayed on the liquid crystal display unit 12. . For this reason, in the sphygmomanometer 1, the cuff 2, the pump 5, the exhaust valve 7, and the pressure sensor 8, together with the control section 6, constitute a blood pressure measuring means and a pulse measuring means.
[0014]
In the sphygmomanometer main body 3 of the sphygmomanometer 1, the power supply 4 is composed of a dry battery and supplies operation power to the control unit 6, the liquid crystal display unit 12, the pump 5, and the like.
[0015]
The posture sensor 14 is an inclination sensor that detects the posture of the subject. When the cuff 2 is wound around a predetermined position of the subject, the posture sensor 14 is arranged so as to be able to detect at least the subject's lying position and a posture other than the lying position (for example, sitting or standing). Thus, the sphygmomanometer 1 can detect a change in the posture of the subject.
[0016]
The acceleration sensor 15 is, for example, a three-dimensional acceleration sensor, so that the sphygmomanometer 1 can detect the acceleration of the body of the subject and detect the degree of physical activity of the subject based on the acceleration.
[0017]
The changeover switch 11 is an operation element for switching the operation of the sphygmomanometer 1. In the sphygmomanometer 1, the operation of the changeover switch 11 allows the blood pressure monitor 1 to be used as a normal electronic sphygmomanometer and to be used as a blood pressure monitor in daily life. It can be used as a sphygmomanometer related to reactivity, and can receive various settings related to blood pressure measurement. The start switch 10 is an operator for instructing start of measurement.
[0018]
The memory 16 is a recording unit that records a blood pressure measurement result relating to blood pressure responsiveness in daily life together with the detection results by the corresponding sensors 14 and 15, and is configured by, for example, a memory card.
[0019]
The control unit 6 is a computer that controls the operation of the entire sphygmomanometer 1 and holds a processing program for blood pressure measurement related to blood pressure responsiveness in daily life, in addition to the configuration of the sphygmomanometer. It should be noted that these programs are recorded when the sphygmomanometer 1 is manufactured.
[0020]
That is, when the operation as a normal sphygmomanometer is selected by the operation of the changeover switch 11, the control unit 6 drives the pump 5 and the like in response to the operation of the start switch 10, and outputs the output signal S1 of the pressure sensor 8. By performing the processing, the blood pressure and the pulse are measured, and the measurement result is displayed on the liquid crystal display unit 12.
[0021]
When the setting mode of the automatic blood pressure measurement is selected by the same user's operation of the changeover switch 11, the setting of the measurement time is accepted by the subsequent operation of the changeover switch 11. Also, when the automatic measurement of blood pressure is selected by the user, by monitoring the built-in timer, when the measurement time set in the automatic blood pressure measurement setting mode is reached, similarly measure the blood pressure pulse, and display the measurement result, The measurement result is recorded in the memory 16 together with the time information.
[0022]
On the other hand, when the setting relating to the blood pressure responsiveness in daily life is selected by operating the changeover switch 11, the control unit 6 displays a predetermined menu on the liquid crystal display unit 12 and operates the changeover switch 11. Accepts this menu selection. When the user selects the setting of the posture change by selecting this menu, the control unit 6 accepts the setting of the reference value for posture determination. Here, the reference value for posture determination is a reference value for starting measurement based on the output signal of the posture sensor 14.
[0023]
On the other hand, when the user selects the intensity setting of the physical activity, the setting of the intensity reference value of the physical activity is accepted. Here, the intensity reference value of the physical activity is a criterion for starting the measurement assuming that there is a physical activity from the acceleration detected by the acceleration sensor 15. On the other hand, when the user selects the time setting of the physical activity, the setting of the time reference value of the physical activity is accepted. Here, the time reference value of the physical activity is a determination criterion for starting the measurement assuming that there is a physical activity continued from the acceleration detected by the acceleration sensor 15.
[0024]
The control unit 6 executes the processing procedure shown in FIG. 1 in the blood pressure measurement relating to the blood pressure responsiveness in daily life, determines the output signals of the posture sensor 14 and the acceleration sensor 15 based on these reference values, and determines the blood pressure, The pulse is measured, and the measurement results are recorded in the memory 16 together with the detection results obtained by the sensors 14 and 15.
[0025]
That is, when this processing procedure is started, the control unit 6 proceeds from step SP1 to step SP2, and determines a change in an output signal output from the attitude sensor 14 based on a reference value for attitude determination, thereby determining whether or not the attitude has changed. to decide. Here, when the posture change is detected, the control unit 6 proceeds to step SP3, drives the pump 5 and the like, processes the output signal S1 of the pressure sensor 8, and measures the blood pressure and the pulse. In the subsequent step SP4, the measurement results are recorded in the memory 16 together with the corresponding detection results of the attitude sensor 14 and the acceleration sensor 15, and the process returns to step SP2. Thus, in the sphygmomanometer 1, for example, when the subject changes his or her posture from a lying position to a sitting position, or further changes his or her posture from a lying position to a standing position, the blood pressure and the pulse are measured and recorded. Has been done.
[0026]
On the other hand, if a negative result is obtained in step SP2, the control unit 6 proceeds from step SP2 to step SP5. Here, the control unit 6 determines whether or not the subject is moving by determining the output signal of the acceleration sensor 15 based on the intensity reference value of the physical activity. If a negative result is obtained here, the process proceeds to step SP2. Return. On the other hand, if a positive result is obtained in step SP5, the control unit 6 proceeds to step SP6, and determines whether or not the subject is moving his / her body for a time longer than the time reference value of the physical activity. In this determination, when a negative result and a positive result are obtained in step SP5 and step SP6, respectively, the timer is reset, and the lapse of time by this timer is determined and executed based on the time reference value of the physical activity.
[0027]
If a negative result is obtained in step SP6, the control unit 6 returns to step SP5. If a positive result is obtained, the control unit 6 proceeds from step SP6 to step SP3, measures the blood pressure and the pulse, and records them in the memory 16. I do. Thus, in the sphygmomanometer 1, when the subject moves his / her body for a certain period of time with a certain intensity or more, the blood pressure and the pulse are measured and recorded.
[0028]
Further, when the blood pressure and the pulse detected by the series of processing procedures show an abnormal response compared to the normal blood pressure and the pulse, the control unit 6 issues a warning by an alarm (not shown), thereby informing the user. Call attention. Specifically, this is a case where the systolic blood pressure is abnormally increased as compared with the normal blood pressure and pulse. Thus, in this embodiment, it is possible to evaluate changes in blood pressure in response to changes in daily activities and postures in real time.
[0029]
(2) Operation of Embodiment In the configuration described above, when the user selects a blood pressure measurement related to blood pressure responsiveness in daily life by operating the changeover switch 11, the posture sensor 14 changes the posture of the blood pressure monitor 1. The detected motion is detected by the acceleration sensor 15. In the sphygmomanometer 1, when such a change in the posture is equal to or larger than a certain value, the blood pressure and the pulse of the subject are automatically measured, and the measurement results are stored in the memory together with the detection result by the posture sensor 14 serving as the measurement reference. 16 is recorded. Also, when the subject moves his / her body for a certain period of time due to a certain intensity, the blood pressure and the pulse are automatically measured in the same manner, and the measurement results are stored in the memory 16 together with the detection results obtained by the acceleration sensor 15 serving as the measurement reference. Be recorded. Thus, the sphygmomanometer 1 measures the blood pressure so that the blood pressure responsiveness in daily life can be evaluated.
[0030]
That is, according to the sphygmomanometer 1, it is possible to analyze the record of the memory 16 at a later date to determine the response of blood pressure to physical activity and postural change in daily life, thereby determining the risk factor of stroke. it can. That is, if the difference between the systolic blood pressure thus recorded and the normal systolic blood pressure is large, and even if the normal blood pressure is low, it is possible to determine that the risk factor for stroke is high, whereas the normal blood pressure If the difference between the systolic blood pressure recorded in this way and the normal systolic blood pressure is not so large, the risk factor for stroke can be determined to be low, thereby helping to manage health during normal times be able to.
[0031]
On the other hand, the setting of the determination reference value for starting the blood pressure measurement is accepted in the sphygmomanometer 1 by the operation of the changeover switch 11 by the user. Thus, the sphygmomanometer 1 can measure blood pressure responsively in such a way that the blood pressure responsiveness in such a daily life can be evaluated appropriately in response to the daily life of various different subjects.
[0032]
When an automatic blood pressure measurement is instructed by operating the changeover switch 11, blood pressure and pulse are measured at a preset time by monitoring a built-in timer, and the measurement result is recorded in the memory 16. Thus, the sphygmomanometer 1 can periodically measure the blood pressure when, for example, waking up or going to bed, which can also be useful for health management.
[0033]
(3) Effects of the Embodiment According to the above configuration, the sensor detects posture change and physical activity, measures the blood pressure based on the posture change and physical activity, and records the blood pressure together with the detection result by the sensor. Blood pressure can be measured so that blood pressure reactivity in daily life can be evaluated.
[0034]
(4) Other Embodiments In the above-described embodiment, a case has been described in which the output signals of the acceleration sensor and the attitude sensor are independently determined to measure the blood pressure and the pulse, but the present invention is not limited to this. Instead, the blood pressure and the pulse may be measured by comprehensively determining the output signals of the acceleration sensor and the attitude sensor. In this way, the sitting position and the standing position can be identified, and the blood pressure and the pulse can be measured also by a change in the posture between the sitting position and the standing position.
[0035]
Further, in the above-described embodiment, the case where the blood pressure and the pulse are measured by the posture change and the physical activity has been described, but the present invention is not limited to this, and the blood pressure and the pulse may be measured only by the posture change. Alternatively, blood pressure and pulse may be measured only by physical activity.
[0036]
Further, in the above-described embodiment, the case where the blood pressure and the pulse are simply measured by the posture change and the physical activity has been described. However, the present invention is not limited to this, and the posture change after the blood pressure and the pulse are measured in this way. Alternatively, the blood pressure and the pulse may be measured again after a certain period of time has elapsed since the detection of the physical activity. In this way, it is possible to determine, for example, the response of the body until the blood pressure changes to the normal time after ending the exercise.
[0037]
Further, in the above-described embodiment, the case where the risk factor of stroke is determined has been described.However, the present invention is not limited to this, and can be widely applied to the determination of risk factors of various other diseases such as cerebral infarction. Can be.
[0038]
Further, in the above-described embodiment, the case where the blood pressure measurement unit and the pulse measurement unit are integrally configured has been described. However, the present invention is not limited to this, and the blood pressure measurement unit and the pulse measurement unit are separately configured. Alternatively, another detection method such as a K-tone method may be used.
[0039]
【The invention's effect】
As described above, according to the present invention, a posture change and a physical activity are detected by a sensor, and the blood pressure is measured based on the posture change and the physical activity and recorded together with a detection result by the sensor, so that it can be used in daily life. Blood pressure can be measured so that blood pressure reactivity can be evaluated.
[Brief description of the drawings]
FIG. 1 is a flowchart for explaining a processing procedure of a control unit in a sphygmomanometer according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a sphygmomanometer according to the embodiment of the present invention.
[Explanation of symbols]
1 ... Sphygmomanometer, 2 ... Cuff, 3 ... Sphygmomanometer body, 4 ... Power supply, 5 ... Pump, 6 ... Control unit, 7 ... Exhaust valve, 8 ... Pressure sensor, 11 ... Switch Switch 12, liquid crystal display unit 14, posture sensor 15, acceleration sensor 16, memory

Claims (1)

A sensor for detecting changes in body posture and / or physical activity,
Blood pressure measuring means,
A control unit that controls the operation of the blood pressure measurement unit based on the posture change and / or physical activity based on the detection result by the sensor, and acquires a blood pressure measurement result from the blood pressure measurement unit,
Recording means for recording the blood pressure measurement result together with the detection result by the corresponding sensor.

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