JPH10211175A - Electrocardiogram/pulse wave measurement bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recognize not only a heart function but also the circulatory function of the whole body, to improve safety at the time of bathing and to perform easy and non-troublesome electrocardiogram/pulse wave measurement by obtaining an electrocardiogram, a heart rate and a pulse wave, measuring pulse wave propagation time from them further and displaying it. SOLUTION: The electrocardiogram is measured by processing electric signals from an electrode 1a provided on one inner side wall inside a bathtub main body 5, the electrode 1b provided on the other inner side wall and a ground electrode in an electrocardiogram measurement part 2a and is displayed at a display part 4. Also, when a finger tip touches the light emitting body and light receiving body of a pulse wave sensor 6 attached to the frame part of the bathtub main body 5, the change of the transmissivity of light is processed in a pulse wave measurement part 2b and the pulse wave is measured and displayed at the display part 4. Such electrocardiogram measurement part 2a and pulse wave measurement part 2b perform parallel processings and the R wave of the electrocardiogram and the deviation of the time of the peak value of the pulse wave are calculated in a control part 35 and displayed. Thus, the physiological change and risk phenomenon of a body at the time of bathing are easily ascertained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects an electrocardiogram, a pulse wave, and a pulse wave propagation time in a bathtub body, informs a bather or the like of the burden on the living body, bathing effect, etc., avoids danger when bathing, and promotes health. The present invention relates to an electrocardiogram / pulse wave measurement bathtub capable of performing a measurement.

[0002]

2. Description of the Related Art Conventionally, bathtubs for measuring electrocardiogram and blood flow corresponding to physiological and psychological states are disclosed in JP-A-5-95921 and JP-A-2-213323. The former disclosed in Japanese Patent Application Laid-Open No. Hei 5-95921 is such that an electrode is provided on one inner side wall in a bathtub main body, and an electrode forming a pair with this electrode is provided on the other side wall. This is an electrocardiogram measuring bath which is connected to a measuring unit for processing an electric signal to obtain an electrocardiogram, and comprising an electrocardiogram waveform amplitude output means obtained by the measuring unit.

[0003] Further, the latter disclosed in Japanese Patent Application Laid-open No. Hei 2-213323 has a pulse wave sensor attached to an ear lobe of a bather, and the blood flow of the bather is determined using the pulse wave sensor. This is a device that includes a measurement unit, a display unit that determines a bathing effect based on a blood flow rate and a heart rate, and a notification unit that notifies a bather that a predetermined bathing effect has been obtained. This device allows a bather to easily know whether or not an appropriate physiological effect can be obtained without requiring special knowledge.

[0004]

The former Japanese Patent Application Laid-Open No. 5-95.
In the electrocardiogram measuring bath described in Japanese Patent No. 921, an electrocardiogram is obtained by processing electric signals of paired electrodes, an electrocardiogram waveform is displayed on a monitor, a heart rate is calculated by a CPU, and an electrocardiogram during bathing is obtained. And heart rate, and if there was any abnormality, he used some kind of alarm to report it and deal with it. In the latter device described in JP-A-2-213323,
A pulse wave sensor is attached to the earlobe of the bather, the change in light transmittance is measured to measure the blood flow, and the pulse wave sensor is calculated by increasing or decreasing the blood flow, and the pulse wave rate per unit time is calculated as the heart rate. The heart rate was calculated from the equation, and the blood flow and the heart rate during bathing were checked.

[0005] However, bathers, especially the elderly, sometimes have abnormal situations such as cerebral hemorrhage during bathing, and these causes are caused not only by cardiac functions but also by hardening of blood vessels and clogging of blood vessels. May be due to impaired circulation throughout the body. For this reason, it is not sufficient to check the heart rate and the electrocardiogram information for monitoring only the heart function of the electrocardiogram measuring bath described in Japanese Patent Application Laid-Open No. 5-95921. There is a problem that it is not possible to sufficiently cope with the check of the blood flow (pulse wave) and the heart rate of the device described in the publication.

Further, in the latter device described in Japanese Patent Application Laid-Open No. Hei 2-213323, since a pulse wave sensor is attached to the earlobe of a bather, there is also a problem that the bather is cumbersome and the comfort during bathing is impaired. is there.

The present invention has been made in order to solve the above-mentioned problems. The present invention has been made to obtain an electrocardiogram, a heart rate, and a pulse wave, and to measure and display a pulse wave transit time from this to obtain a heart function. In addition, the purpose of the present invention is to provide an electrocardiogram / pulse wave measurement bath tub that enhances the degree of safety at the time of bathing, and that facilitates pulse wave measurement by displaying and measuring the whole body circulatory function. I do.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and comprises a plurality of electrodes installed in a bathtub main body, a pulse wave sensor mounted on the bathtub main body, and a plurality of electrodes. , An electrocardiogram measuring unit that processes an electric signal of an electrode to obtain an electrocardiogram, a pulse wave measuring unit that processes a signal from a pulse wave sensor to obtain a pulse wave, and control that obtains a pulse wave transit time from an electrocardiogram and a pulse wave. And a display unit for displaying an electrocardiogram, a pulse wave, or a pulse wave transit time.

[0009] The plurality of electrodes used in the present invention include an electrode provided on one inner wall in the bathtub body, an electrode on the other opposed inner wall in the bathtub body, and another inner wall in the bathtub body. Refers to the ground electrode at the upper end of the wall. The shape and size of the electrode may be an appropriate shape and size. For example, when the electrode is square, the length of one side may be approximately 10 cm, and when the electrode is rectangular, the length of the short side is 0.5. The length of the long side may be 1 to 80 cm. Preferably, the length of the short side is 5 to 15 cm and the length of the long side is 10 to 20 cm in consideration of the size of the heart and the arrangement of the electrodes. The electrode and the counter electrode may be provided centering on the side surface of the heart of the bather, and the electrodes may be provided on the entire side walls in the bathtub.

The electrocardiogram displayed on the display unit shows the potential difference on the vertical axis and the time on the horizontal axis. The potential difference is measured with the passage of time, and this difference is represented by a graph such as a peak or a valley. Things. The potential difference represented by the vertical axis is the potential measured by the electrode provided on one inner wall in the bathtub body and the ground electrode on the upper end of another inner wall in the bathtub body, and the potential difference in the bathtub body. It is represented by the difference between the potential measured by the electrode provided on the other inner wall and the potential measured by the ground electrode at the upper end of another inner wall in the bathtub body.

The pulse wave is detected by a pulse wave sensor. This pulse wave sensor is made up of a light emitter and a light receiver. In the transmission type, the light emitter and the light receiver are located opposite each other, and in the reflection type, it is located on the same side. The pulse wave sensor is preferably measured with fingers so as not to be bothersome, and provided on the frame of the bathtub body, or on the inner surface, or on the shelf of the armrest, which is one step lower on the inner surface, so that the bather can measure in an easy posture. Is preferably installed. Although it may be in hot water, it is preferable to be in a place where hot water is not available, in order to prevent the pulse wave sensor from getting wet.

The pulse wave is measured by touching a finger on a pulse wave sensor attached to a frame portion of the bathtub body, an inner surface, or a shelf portion of an armrest that is one step lower than the inner surface. By placing the fingertip on the optical path from the illuminant of the pulse wave sensor, the amount of light emitted from the illuminant or the amount of reflection changes due to the change in blood flow at the fingertip caused by the beating of the heart. Detected by photoreceptor.

The blood flow is shown as a continuous waveform, the vertical axis shows the blood flow, the horizontal axis shows the time, and the blood flow is measured as time elapses. What is done is a pulse wave. The pulse wave sensor and the pulse wave measurement unit are connected, and the pulse wave measurement unit detects an increase or decrease in blood flow based on a change in the light transmittance of the pulse wave sensor, and generates a waveform based on the change in blood flow. You can find the waves. By measuring the level of the pulse wave, the blood flow can be measured. Since the pulse wave rate per unit time is equal to the heart rate, the heart rate can be measured by measuring the pulse wave rate. That is, if the amplitude and the cycle of the pulse wave are detected, the blood flow and the heart rate can be measured.

The pulse wave transit time is, for example, an R wave of an electrocardiogram,
By detecting the peak value of the pulse wave and the peak value of the pulse wave and calculating the time lag between the peak values of the R wave and the pulse wave, it can be obtained. That is, when the blood sent from the ventricle detects a pulse wave, for example, the time until the blood reaches the finger can be obtained. For this reason, it is possible to determine the state of the function of the entire circulatory organ including the vascular system such as the flexibility of the blood vessel and the presence or absence of a blood circulation disorder based on the pulse wave propagation time.

[0015] The display unit may be any as long as it displays results such as an electrocardiogram, a pulse wave, a pulse wave transit time, or a heart rate. Usually, it is provided in the bathroom, but it may be provided outside the bathroom for viewing by another person. It is also desirable to have an alarm function when an abnormality occurs.

(Operation) The electrocardiogram measuring section comprises a plurality of electrodes installed in the bathtub body, an electrocardiogram measuring section for processing the electric signals of the plurality of electrodes to obtain an electrocardiogram, and a display section. Electrocardiogram measurement can be performed by processing the electrical signals of the plurality of electrodes and displaying the electrocardiogram on the display unit.

Since a pulse wave sensor and a pulse wave measuring section for processing a signal from the pulse wave sensor to obtain a pulse wave are provided, the pulse wave measuring section can measure the pulse wave of the pulse wave sensor. . In addition, the pulse wave sensor is the frame part of the bathtub body, or
Because it is provided on the inner surface or on the shelf of the lower armrest on the inner surface, measurement can be performed by just touching the finger, and there is no trouble of attaching to a part of the body of the bather, and the feeling of comfort is impaired Never.

Since the electrocardiogram and the pulse wave can be measured at the same time, the electrocardiogram and the pulse wave can be obtained in a short time, and the pulse wave transit time can be measured therefrom, so that not only the heart function but also the circulatory function including the vascular system can be measured. By displaying these on the display unit, the physiological change of the human body at the time of bathing and the danger signs at the time of bathing can be known by the person or others.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of the present invention, in which a measuring unit, a processing device, and a display unit are attached near a bathtub body. In FIG. 1, A is an electrocardiogram / pulse wave measurement bath, and the electrocardiogram / pulse wave measurement bath A is
Bathtub body 5, electrode 1a provided on one inner wall in bathtub body 5, and electrode 1b provided on the other inner wall
And an earth electrode 1c provided on another inner wall in the bathtub body between these electrodes 1a and 1b, a pulse wave sensor 6 attached to a frame portion of the bathtub body 5, an electrode 1a, and an electrode An electrocardiogram measuring unit 2a for processing an electrical signal from the ground electrode 1c to obtain an electrocardiogram; and a pulse wave measuring unit 2b for processing a change in transmittance of light from the pulse wave sensor 6 to obtain a pulse wave. The control unit 35 calculates a time lag between the peak value of the R wave of the electrocardiogram and the peak value of the pulse wave from the electrocardiogram and the pulse wave to obtain the pulse wave transit time, and the display unit 4.

The electrode 1a, the electrode 1b, and the ground electrode 1c are connected, and the electrode 1a, the electrode 1b, and the ground electrode 1c have a square size of about 10 cm × 10 cm. The electrode 1a, the electrode 1b, the ground electrode 1c, and the electrocardiogram measuring unit 2a are connected, and the electrocardiogram measuring unit 2a processes an electric signal of the electrode 1 and the electrode 1b to obtain an electrocardiogram.

The electrocardiogram measuring unit 2a includes an amplifier 32,
It comprises a filter 33, an A / D converter 34, and a control unit 35. The amplifier 32 amplifies the electrocardiogram signal of the electrocardiogram of the electrode 1a, the electrode 1b, and the ground electrode 1c. The filter 33 removes noise. A / D
The converter 34 converts an analog value of an electrocardiogram signal of the electrocardiogram into a voltage digital signal. The control unit 35 extracts the digital signal of the electrocardiogram, and sends the extracted digital signal of the electrocardiogram to the display unit 4. An electrocardiogram is displayed on the display unit 4. In the present invention, although only displayed, the abnormality may be detected and a warning such as light or sound may be performed by connecting to an electrocardiogram judging device that indicates an abnormality and analysis of an electrocardiogram waveform, or may be performed for a long time. By keeping a record of this, it is possible to know the signs of change.

The pulse wave sensor 6 is composed of a light emitting body and a light receiving body. The light emitting body and the light receiving body are of a transmission type and are opposed to each other. A fingertip is inserted between the light paths of the light emitting body and the light receiving body. The pulse wave sensor 6 and the pulse wave measurement unit 2b are connected to each other, and the change in the blood flow at the fingertip is measured by light. The pulse wave is obtained by processing the change from the rate.

The pulse wave measuring section 2b includes an amplifier 61, a filter 62, an A / D converter 63, and a control section 35. The amplifier 61 amplifies a change in light transmittance of the pulse wave sensor 6. The filter 62 removes noise. The A / D converter 63 converts an analog value of an electrocardiogram signal of the electrocardiogram into a digital signal of voltage. The control unit 35 extracts the digital signal of the pulse wave and sends the extracted digital signal of the pulse wave to the display unit 4. The pulse wave is displayed on the display unit 4. In the present invention, the display is only performed, but by connecting to a pulse wave determination device that indicates the abnormality and analysis of the pulse waveform, the abnormality may be detected, and a warning such as light or sound may be issued. Long-term records can also show signs of change.

The pulse wave propagation time is calculated by the electrocardiogram measuring unit 2a for measuring the electric signals of the electrodes 1 and 1b, and the pulse wave measuring unit 2b for measuring the change in light transmittance between the light emitter and the light receiver of the pulse wave sensor 6. At the same time, the control unit 35 can calculate and determine the time lag between the peak values of the R wave and the pulse wave of the electrocardiogram.

Next, a method of using the electrocardiogram / pulse wave measuring bath of this embodiment will be described. First, an electrocardiogram measuring unit 2a processes an electric signal from the electrode 1a provided on one inner side wall in the bathtub main body 5, the electrode 1b provided on the other inner side wall, and the ground electrode to obtain an electrocardiogram. The measured value is displayed on the display unit 4.

In this manner, the electrode 1a provided on one inner wall in the bathtub body 5, the electrode 1b provided on the other inner wall, and the electric signals of the electrode 1a and the electrode 1b are processed. An electrocardiogram measuring section 2a for obtaining an electrocardiogram, and a display section 4
Therefore, the electrocardiogram measurement unit 2a processes the electric signals of the electrodes 1a and 1b, and displays the electrocardiogram on the display unit 4, so that the electrocardiogram measurement can be performed.

Next, a fingertip touches the light-emitting body and the light-receiving body of the pulse wave sensor 6 attached to the frame of the bathtub main body 5, and a change in light transmittance is processed by the pulse wave measuring section 2b. The waves are measured and displayed on the display unit 4.

In this manner, the display unit 4 includes a pulse wave measuring unit 2b for processing a change in light transmittance of the pulse wave sensor 6 attached to the frame of the bathtub body 5 to obtain a pulse wave. Therefore, the pulse wave measurement unit 2b processes the signal based on the change in the light transmittance of the pulse wave sensor 6, obtains the pulse wave, and displays the pulse wave on the display unit 4 to accurately measure the pulse wave. It can be carried out. In addition, since the pulse wave sensor 6 is provided in the frame of the bathtub body 5, measurement can be performed by just touching a finger, and there is no need to attach the part to a part of a bather's body, and a comfortable feeling when bathing is obtained. There is no loss.

The electrical signals of the electrodes 1 and 1b are processed in parallel by the electrocardiogram measuring section 2a and the change in the light transmittance between the light emitter and the light receiver of the pulse wave sensor 6 by the pulse wave measuring section 2b. The controller 35 calculates and displays the time lag between the peak values of the R wave and the pulse wave of the electrocardiogram.

By doing so, the electrocardiogram and the pulse wave can be simultaneously measured, the electrocardiogram and the pulse wave can be obtained in a short time, and the pulse wave transit time can be measured therefrom. The circulatory function including the system can be measured, and by displaying these on the display unit 4, physiological changes of the human body at the time of bathing and danger signs at the time of bathing can be known by the person or others. it can.

[0031]

The present invention comprises a plurality of electrodes installed in the bathtub body, an electrocardiogram measuring section for processing an electric signal of the plurality of electrodes to obtain an electrocardiogram, and a display section. Electrocardiogram measurement can be performed by processing the electrical signals of the plurality of electrodes by the electrocardiogram measurement unit and displaying the electrocardiogram on the display unit.

Further, a pulse wave for which a pulse wave is obtained by processing a change in light transmittance of a pulse wave sensor attached to a frame portion of the bathtub body, an inner surface, or a shelf portion of a lower armrest on the inner surface. Because it consists of a wave measurement unit and a display unit,
The pulse wave measurement unit processes the change in the light transmittance of the pulse wave sensor and displays the pulse wave on the display unit, so that the pulse wave can be accurately measured, the blood circulation status can be determined, and Danger such as intracerebral hemorrhage can be avoided. In addition, since the pulse wave sensor is provided on the frame of the bathtub body, or on the inner surface, or on the shelf of the lower armrest on the inner surface, it can be measured just by touching a finger, and a part of the body of the bather There is no hassle such as mounting on

The electrocardiogram and the pulse wave can be measured simultaneously, the electrocardiogram and the pulse wave can be obtained in a short time, and the pulse wave transit time can also be measured therefrom. This display shows the physiologic changes of the body and the circulatory function including the vascular system as well as the heart function, so that it is possible to know the prediction of danger etc. from this display. Can be.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state in which a measuring unit, a processing device, and a display unit are mounted near a bathtub main body according to an embodiment of the present invention.

[Explanation of symbols]

 A Electrocardiogram / pulse wave measurement bathtub 1, 1a, 1b electrode 1c Ground electrode 2a Electrocardiogram measurement unit 2b Pulse wave measurement unit 32 Amplifier 33 Filter 34 A / D converter 35 Control unit 4 Display unit 5 Bathtub body 6 Pulse wave sensor 61 Pulse Wave amplifier 62 filter 63 A / D converter

Claims (1)

[Claims] 1. A plurality of electrodes installed in a bathtub body;
A pulse wave sensor attached to the bathtub body; an electrocardiogram measuring unit for processing an electric signal of the electrode to obtain an electrocardiogram; a pulse wave measuring unit for processing a signal from the pulse wave sensor to obtain a pulse wave; An electrocardiogram / pulse wave measuring bath, comprising: a control unit for obtaining a pulse wave transit time from a pulse wave and a pulse wave; and a display unit for displaying an electrocardiogram or a pulse wave or a pulse wave transit time.