JP3388523B2 - Blood pressure measurement system and blood pressure value calculation device - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to a blood pressure measuring system and a blood pressure measuring system.
And a blood pressure value computing device .

[0002]

2. Description of the Related Art Conventionally, the blood pressure of a person has usually been measured directly by using air pressure.

That is, in this direct blood pressure measuring method, a tube made of an elastic material called a cuff is wrapped around an arm or a finger, and air is supplied into the tube by an air pump to apply pressure to the blood vessel. Then, when the blood circulation is stopped by this pressure, the air in the tube is gradually released, the pressure applied to the blood vessel is reduced, and the blood circulation is started. Blood flow stop and start of blood flow in this blood vessel are detected by pulse sound detection, pulse pressure detection, or optically, and the air pressure applied to the blood vessel corresponding to the stop or start of blood flow is measured. Then, the blood pressure data is obtained from the measured value.

The blood pressure constantly changes, and it is necessary to take the trend of the change from a large number of data in order to accurately judge the degree of health.

However, the above-mentioned conventional direct measurement type sphygmomanometer detects the stop or start of blood flow by sound, pressure or optically by pressurizing a blood vessel, an air pump for supplying air to this tube and pressurization. It requires a detector or the like to perform the measurement, which is troublesome because the measurement is troublesome, and the size of the device is large, which makes it difficult to carry and measure in daily life.

Therefore, conventionally, there has been proposed a so-called pulse wave type sphygmomanometer for measuring blood pressure based on the pulse wave velocity.

In this pulse wave propagation type blood pressure monitor, the difference between the generation timing of the electrocardiogram (R wave) of the electrocardiogram, which is defined as the origin of blood flow, and the timing at which the pulse reaches the fingertip of the hand, that is, the pulse The blood pressure is calculated from the wave transit time (PWTT).

That is, the pulse wave transit time and the blood pressure are shown in FIG.
It is known that there is a functional relationship that can be connected by a straight line as shown in Fig. 9, and if a constant of this function (blood pressure calculation function) is set, by detecting the cardiac radio wave and the pulse, the timing of the cardiac radio wave and the pulse is detected. The blood pressure can be calculated by calculating the pulse wave transit time, that is, the time difference data.

Therefore, the conventional pulse wave type blood pressure monitor is
At least, a cardiac wave detection electrode for detecting a cardiac wave, an optical element for detecting a pulse of a fingertip, a memory for storing the blood pressure and the pulse wave transit time previously measured by a sphygmomanometer of a direct measurement method, and a direct measurement method Equipped with a key for inputting the blood pressure measured by the sphygmomanometer and a calculation means, and the time difference from the detection timing of the cardiac wave detected by the cardiac wave detection electrode to the detection timing of the pulse detected by the optical element (pulse wave Propagation time)
The calculation means calculates the blood pressure from the pulse wave transit time and the blood pressure data in the memory.

However, the blood pressure calculation function between the pulse wave transit time and the blood pressure changes depending on the person, and even for the same person over time, and there is a linear relationship as shown in FIG. In order to determine the constant of this function, at least pulse wave transit time between two points and blood pressure data are required.

Therefore, conventionally, the blood pressure at rest and immediately after exercise is measured in advance by a direct measurement type blood pressure monitor, and the measured blood pressure data is input to the pulse wave propagation type blood pressure monitor by key operation. Pulse wave transit time (time difference data)
Is obtained from the difference between the cardiac wave detection timing by the cardiac wave detection electrodes of the pulse wave type sphygmomanometer and the pulse detection timing by the optical element, and the blood pressure and pulse wave transit time at rest and immediately after exercise are stored in memory. The constant of the blood pressure calculation function is calculated by the calculation means and stored in the memory.

In order to more accurately measure the blood pressure using the pulse wave propagation type sphygmomanometer, blood pressure is frequently measured using the direct measurement type sphygmomanometer. Input into the wave propagation type sphygmomanometer,
It is necessary to store the latest data in the memory.

[0013]

However, in such a conventional sphygmomanometer, the measurement is troublesome and troublesome, and the size of the device is large, so that the sphygmomanometer can be carried easily in daily life and easily measured. There is a problem that it is difficult and convenient to input the latest data in order to perform accurate measurement, which is inconvenient.

That is, in the blood pressure monitor of the direct measurement system, a tube for pressurizing a blood vessel, an air pump for supplying air to this tube, and a detection for optically or optically detecting stop or start of blood flow by pressurization. It requires a device and the like, and the measurement is troublesome and troublesome, and the size of the device is so large that it is difficult to carry and measure in daily life.

Further, in the pulse wave type blood pressure monitor,
It is necessary to measure the blood pressure at rest and immediately after exercise with a direct measurement type sphygmomanometer and input it to the pulse wave propagation type sphygmomanometer by key operation. In particular, since the blood pressure calculation function between the pulse wave transit time and the blood pressure changes depending on the person, and even the same person over time, in order to more accurately measure the blood pressure by the pulse wave type sphygmomanometer. It is necessary to frequently measure with a blood pressure meter of the direct measurement type and input the latest blood pressure data by key, and always store it in the memory. As a result, the latest blood pressure data frequently measured with a direct measurement type sphygmomanometer,
There is a problem in that it is necessary to perform a troublesome key operation of inputting a key into a pulse wave propagation type blood pressure monitor, and is inconvenient.

Further, in order to accurately measure the blood pressure with the pulse propagation type blood pressure meter, the latest blood pressure data is always measured with the direct measurement type blood pressure meter and input to the pulse wave propagation type blood pressure meter. , It is necessary to store in the memory, but the conventional pulse propagation type blood pressure monitor does not have a function to notify when the blood pressure data stored in the memory is the blood pressure data measured by the direct measurement type blood pressure monitor. However, it was not clear whether or not it was the latest blood pressure data, and the accuracy of blood pressure data measured by a pulse wave type sphygmomanometer was a problem.

Therefore, according to the present invention, a blood pressure measuring system and a blood pressure value operating system capable of accurately and easily measuring blood pressure based on the latest blood pressure data measured by a direct measurement type blood pressure monitor.
The purpose is to provide a computing device .

[0018]

Means for Solving the Problems A blood pressure measurement system of the present invention
Arm, for example, as described in claim 1, the blood pressure value is measured using a cuff, and a blood pressure measuring device having a transfer means for transferring data including this measured blood pressure values, said transfer means Receiving means for receiving the data transferred by
A pulse detection unit, an electrocardiographic wave detection unit, and a display unit that calculates and displays a blood pressure value based on the data received by the reception unit, the detection timing of the pulse detection unit, and the detection timing of the electrocardiographic wave detection unit. in the blood pressure measurement system including a blood pressure value calculation unit for pulse wave system having a, the blood pressure measuring device is provided with a measurement time counting means for counting the measurement time of the blood pressure values, said transfer means, said blood pressure means for transferring data, including the measured time measured by said measuring time counting means with a value
And the blood pressure value computing device reads the measurement time from the data received by the receiving means, controls the first blood pressure value to be displayed on the display means together with the blood pressure value, and measures the current time. Means for measuring the current time,
The measurement time read by the first control means
And the current time measured by the current time measuring means
And calculate the difference between
By providing the second control means ,
Has achieved.

Further , the blood pressure value computing device of the present invention is, for example,
For example, as described in claim 4, data is received from the outside.
Receiving means, pulse detecting means, electrocardiographic wave detecting means,
Blood pressure included in the data received by the receiving means
The data, the detection timing of the pulse detection means, and the electrocardiogram
Calculate blood pressure value based on the detection timing of wave detection means
In the blood pressure value calculation device of the pulse wave propagation method displayed as
From the data received by the receiving means, the blood pressure data
Read the measurement time when the blood pressure value was measured based on the data
The first control for controlling the display together with the blood pressure value.
And control means, and the current time counting means for counting the current time, before
The measurement time read by the first control means
And the current time measured by the current time measuring means
Second control means for controlling so as to calculate and display the difference
The above-mentioned object is achieved by including and.

[0020]

According to the system sphygmomanometer of the first aspect of the present invention, the blood pressure measuring device measures blood pressure data and
The measurement time data when this blood pressure data is measured is acquired, and the blood pressure data and the measurement time data of the human body obtained by the measurement are transferred to the blood pressure value calculation device via the transfer means. Then, the blood pressure value computing device stores the transferred blood pressure data and measurement time data in the storage means, and time difference data from the detection timing of the cardiac wave by the cardiac wave detection means to the detection timing of the pulse by the pulse detection means. Is calculated and the blood pressure is calculated based on the measured time difference data and the blood pressure data stored in the storage means, and the time data related to the measurement time data stored in the storage means is appropriately notified. Further, the first control means is the receiving means.
Read out the measurement time from the data received by
Control so that it is displayed on the display means together with the blood pressure value.
Then, while the current time measuring means measures the current time,
The second control means is read by the first control means.
The measured time and the present time measuring means
The difference from the current time is calculated and displayed on the display means.
Control as shown.

Therefore, the blood pressure data measured by the blood pressure value measuring device can be easily transferred to the blood pressure value calculating device without key input, and the latest blood pressure data can always be obtained without troublesome key operation. based on, it is possible to accurately measure the blood pressure in the blood pressure value computing device, the blood pressure
You can know the freshness of the data.

A blood pressure value calculation according to claim 4 of the present invention
According to the device, the receiving means receives data from the outside and
Blood pressure data included in the data received by the receiving means of
Data and heartbeat detection means
The blood pressure value is calculated and displayed based on the detection timing of
This is a pulse wave propagation type device. And the receiving means
Therefore, the blood based on the blood pressure data is received from the received data.
Read the measurement time when the pressure value was measured, and
The first control means controls to display both, and the current time
The time measuring means measures the current time, and the first control means
The measurement time read out by the
Calculates and displays the difference from the current time measured by the tier
The second control means controls so that.

[0023]

EXAMPLES Examples will be described below with reference to the drawings.

1 to 17 are views showing an embodiment of the system sphygmomanometer of the present invention.

First, the structure will be described.

FIG. 1 is an overall configuration diagram of the system sphygmomanometer 1. The system sphygmomanometer 1 is composed of a direct measurement type blood pressure measuring device 2, a transfer device 3 and an electronic wrist watch type sphygmomanometer (blood pressure calculating device) 4. Has been done.

The blood pressure measuring device 2 has a box-shaped main body case 11
And cuff 12 are provided, and body case 11 and cuff 12
Are connected by an air supply pipe 13 including a signal line (not shown).

On the surface of the main body case 11, a power switch 14 and at least three operation keys K1, K2, K3 are provided, and a power lamp 15 and a display section 16 are provided.

The power switch 14 is a switch for turning on / off the power of the blood pressure measuring device 2, and the power switch 14
When the power is turned on, the power lamp 15 lights up.

The display unit 16 uses, for example, a liquid crystal display device, and displays various information notified from the blood pressure measurement device 2 to the user of the blood pressure measurement device 2, for example, the maximum blood pressure value and the minimum blood pressure value.

The operation keys K1 to K3 are used to set various modes of the blood pressure measuring device 2 and processes in the modes. That is, the blood pressure measurement device 2 has the following modes.
It has a measurement mode for measuring the blood pressure and a transfer mode for transferring the blood pressure data measured in the measurement mode to the electronic wrist watch type sphygmomanometer 4 via the transfer device 3, and switching of this mode is performed by the measurement key K1. To do. In addition, the blood pressure measurement device 2
In the measurement mode, the blood pressure in two states of a person at rest and immediately after exercise is measured, and which of these two states is to be measured is set with the operation key K2. Further, the operation key K3 is used to set the processing in each mode.

The cuff 12 is made of an elastic material and is fixed by being wrapped around a person's arm or finger. Cuff 12
Air is supplied from an air pump (described later) built in the main body case 11 through the air supply pipe 13, and
By removing the air, pressure and pressure are applied to the arm or finger around which the cuff 12 is wound.

That is, in the blood pressure measuring device 2, the cuff 12 is wrapped around a person's arm or finger, and the cuff 1 is drawn by an air pump.
2 is supplied with air to apply pressure to the blood vessel. And
When the blood circulation is stopped by this pressure, the air in the tube is gradually released, the pressure applied to the blood vessel is reduced, and the blood circulation is started. A sound sensor for detecting a pulse, a pressure sensor, or an optical sensor (sensor 27 in FIG. 2) is arranged on the inner surface of the cuff 12, and is sent to the blood pressure measurement device 2 via the signal line. The blood pressure measuring device 2 detects the blood flow in the blood vessel when the blood circulation is stopped and when the blood circulation is started, and obtains blood pressure data from the pressure in the cuff 12 corresponding to the time when the blood circulation is stopped and the time when the blood circulation is stopped.

The blood pressure measuring device 2 has a circuit configuration as shown in FIG. 2, and has a CPU (Central Processing Unit) 2
1, ROM (Read Only Memory) 22, RAM (Random
Access Memory) 23, key input unit 24, blood pressure control unit 2
5, an air pump 26, a sensor 27, a driver 28, a display driver 29, a timer section TM and the like.

The ROM 22 stores a program as the blood pressure measuring device 2 and various system data, and is stored in C
The PU 21 controls each unit of the blood pressure measurement device 2 according to the program in the ROM 22 to perform the process as the blood pressure measurement device 2, in particular, the measurement process of the blood pressure and the acquisition process of the measurement time data when the blood pressure is measured, and the measured blood pressure. Transfers data and measurement time data.

The RAM 23 is used as a work memory of the CPU 21, and as shown in FIG. 3, the time counting register area T, the display register area D, the mode flag area M, the mode flag area L, and the rest time (first). Data areas X0 and Y0 for storing the measured systolic blood pressure data and diastolic blood pressure data, and data areas X1 and Y for storing the systolic blood pressure data and diastolic blood pressure data measured immediately after the exercise (second time)
1. Data areas D0 and T0 for storing the measurement date and measurement time of the resting blood pressure data and data areas D1 and T1 for storing the measurement date and measurement time of the blood pressure data immediately after exercise
And so on.

The key input section 24 is used for the power switch 14 described above.
Also, the operation keys K1, K2, K3, etc. are collectively referred to. The CPU 21 scans the operation state of each key of the key input unit 24, and the operation state of each key, particularly the operation key K1,
The blood pressure measurement process and the measured blood pressure data transfer process are performed in accordance with the operation states of K2 and K3.

The clock section TM includes, for example, an oscillator and a frequency divider, and outputs a clock signal to the CPU 21. CPU21
Is RA based on the timing signal input from the timing section TM.
The current time is measured using the time register area T of M23, and the measured current time data is stored in the time register area T of the RAM 23.

The air supply pipe 13 shown in FIG. 1 is connected to the air pump 26. The air pump 26 supplies air to the cuff 12 via the air supply pipe 13, and the cuff 1
The air in 2 is extracted via the air supply pipe 13.

The sensor 27 is provided on the inner surface of the cuff 12, detects the blood flow (for example, pulse) of the human body, and outputs it to the blood pressure control unit 25.

The blood pressure control unit 25 outputs the detection signal input from the sensor 27 to the CPU 21. Further, the blood pressure control unit 25 operates under the control of the CPU 21, and the air pump 2
6 drive control is performed. At this time, the CPU 21 makes the cuff 1
The blood pressure control unit 25 is driven so that the air pump 26 is driven so that the pressure in 2 increases or decreases by a predetermined rate.
To the blood pressure control unit 25, and the blood pressure control unit 25 drives and controls the air pump 26 based on the control signal.

That is, the CPU 21 controls the blood pressure control unit 25.
The air pump 26 is driven via the to increase the pressure in the cuff 12 by a predetermined divided pressure and pressurize the human arm or finger. The sensor 27 detects the presence or absence of blood flow at this time,
The detection signal is output to the CPU 21 via the blood pressure control unit 25.

Based on the detection signal, the CPU 21 detects blood flow stop and start of blood flow in the blood vessel of the arm or finger around which the cuff 12 is wound, and the pressure at the time when blood flow is stopped (this pressure is the CPU 21 itself. Recognizes that the air pump 26 is controlled via the blood pressure control unit 25). When the systolic blood pressure is detected, the CPU 21 then draws the air in the cuff 12 through the blood pressure control unit 25 by the air pump 26 at a predetermined rate, and when the blood circulation starts, the pressure at the time when the blood circulation starts. To detect the lowest blood pressure.

The CPU 21 measures the above-mentioned systolic blood pressure and diastolic blood pressure in two states at rest and immediately after exercise. The systolic blood pressure and diastolic blood pressure measured in each state are stored in the data areas X0, Y0 and data area X1 of the RAM 23. , Y1, and the measurement times of the blood pressure data at rest and immediately after exercise are acquired from the timing result of the timing section TM and stored in the data areas D0 and T0 and the data areas D1 and T1 of the RAM 23. After writing in the display register area D of the RAM 23, the display section 16 is caused to output the display through the display driver 29.

The driver 28 is for driving the optical element 30 provided in the transfer device 3, and the optical element 3 is provided.
Reference numeral 0 denotes an optical signal exchanged with an optical element provided in an electronic wristwatch-type blood pressure monitor 4 which will be described later to electronically display the above-measured blood pressure data of the systolic blood pressure and the diastolic blood pressure and the measurement time data of these blood pressure data. Transfer to the wristwatch blood pressure monitor 4.

When the CPU 21 measures the blood pressure data at rest and immediately after exercise, the CPU 21 obtains the measurement time at the time of measuring the blood pressure data from the time register area T of the RAM 23, and obtains the obtained measurement time data. RAM
23 in the data areas D0, T0, D1, and T1.
The measurement time data is composed of date data and time data when the blood pressure is measured, and the date data is in the data area D.
Time data is stored in the data areas T0 and T1 at 0 and D1.

The display driver 29 operates under the control of the CPU 21 and causes the display unit 16 to display and output the display data transferred from the display register D of the RAM 23.

Referring again to FIG. 1, the transfer device 3 has a case 31 formed in a substantially rectangular box shape without a bottom, and a cord 32 is used for the blood pressure measurement device 2, particularly the driver shown in FIG. It is connected with 28. A rectangular cutout is formed in the center of the upper part of the case 31, and a transparent member 33 such as transparent glass or transparent hardened plastic is fitted in the cutout. Cutouts 3 are formed on the longitudinal wall surface and the lateral wall surface of the case 31, respectively.
4, 35 are formed.

On the inner surface of the case 31 of the transfer device 3,
The optical element 30 shown in FIG. 2 is attached to the lower side of the transparent member 33.

The electronic wristwatch-type blood pressure monitor 4 is a wristwatch in which blood pressure calculating means is incorporated, and has a main body case 41 made of an electrically insulating synthetic resin or the like as shown in FIG.

A display portion (liquid crystal display device) 42 is provided on the surface of the main body case 41 above the center in FIG. 4, and an LED (light emitting diode) 43 and a photo diode 43 are provided on the left below the center. An optical element 45 including the transistor 44 is provided. A partition 46 is provided between the LED 43 and the phototransistor 44 to prevent light emitted from the LED 43 from directly entering the phototransistor 44. Further, on the surface of the body case 41, a heart wave detection electrode 47 for detecting a heart wave (R wave) is provided on the right side below the center thereof.

The display section 42 is covered with a watch glass 48, and the watch glass 48 is fixed to the main body case 41 via a packing 49.

Key switches S1 and S2 are provided on one side of the body case 41, and key switches S3 and S4 are provided on the other side. These key switches S1 to S4 are for performing various operations such as switching of processing modes, switching of display modes, and input / output of data.

A band 50 is attached to the main body case 41 in the vertical direction in FIG. 4, and the electronic wrist watch type sphygmomanometer 4 is attached to the wrist or the like of the left hand of a person by the band 50.

The display section 42 of the electronic wrist watch type sphygmomanometer 4
As shown in the enlarged view of FIG. 5, the three are divided into upper, middle, and lower rows. In the upper row, the dot matrix display section 51 is
A mode display section 52 is provided in the middle section, and a large segment display section 53 is provided in the lower section.

The dot matrix display section 51 has 5
It is possible to display x16 dots, the numerical value indicating the systolic blood pressure value on the left side, and the numerical value indicating the diastolic blood pressure value on the right side,
Each is printed. Dot matrix display 5
1 displays a blood pressure value by a graph and other character information.

The mode etc. display section 52 has a mode notification section 52a for notifying the display mode being executed, a pulse display section 52b for displaying a pulse or the like formed of a small segment, and a heart-shaped blood pressure measurement for the segment. A heart display portion 52c that flashes in and informs that the blood pressure is being measured is sequentially formed from left to right.

The large segment display section 53 displays the current time in the timepiece mode, displays the maximum or minimum blood pressure numerically in the blood pressure mode, and displays the measurement time data received from the blood pressure measuring device 2 and the measured time data. Time difference data obtained by subtracting the current time from the measurement time data,
Furthermore, when the time difference is not within the predetermined range, a message prompting remeasurement of blood pressure data is displayed.

The inside of the electronic wrist watch type sphygmomanometer 4 is shown in FIG. 6 which shows a longitudinal sectional view passing through the electrocardiographic wave detection electrode 47 of the electronic wrist watch type sphygmomanometer 4 and also in the vertical direction passing near the partition 46. As shown in FIG. 7 showing a cross-sectional view, it is configured, and on the back surface side of the main body case 41, a conductive back cover 54 constituting a cardiac radio wave detection electrode paired with the cardiac radio wave detection electrode 47.
Is attached.

A circuit board 55 is provided inside the electronic wrist watch type blood pressure monitor 4, and the display section 42 is connected to the circuit board 55 via an interconnector 56. Further, as shown in FIGS. 6 and 7, the electrocardiographic detection electrode 47, the back cover 54, the LED 43, and the phototransistor 44 are connected to the circuit board 55 by a coil-shaped conductive member 57, respectively.

As shown in FIG. 7, the optical element portion 45 has a concave surface 58 formed on the surface thereof, and each LED 43, the phototransistor 44 and the partition 46 of the optical element portion 45 has a concave surface 58. It is provided at the bottom. Therefore, when measuring the pulse rate, by applying a fingertip to the concave surface 58, the pulse can be accurately detected by the optical element section 45 without being affected by the light from the outside.

The electronic wrist watch type sphygmomanometer 4 has a circuit configuration as shown in FIG.
1, RAM 62, oscillator 63, frequency dividing circuit 64, key input unit 65, optical detection control unit 66, cardiac wave detection control unit 67,
The detection electrode pair 68 and the driver 69 are provided.

The ROM 61 stores a system program as the electronic wristwatch blood pressure monitor 4 and various system data, and in particular, a program and system data for performing a timing process, a blood pressure measurement calculation process, and the like. .

The RAM 62 is used as a work memory of the control unit 60, and as shown in FIG. 9, a display register area DR, a mode flag area N, a time counting register area t, and a blood pressure measuring device 2 by a receiving process described later. Data areas X2 and Y2 for storing resting systolic blood pressure data and diastolic blood pressure data received from the data area, and data areas for storing systolic blood pressure data immediately after exercise and diastolic blood pressure data received from the blood pressure measurement device 2 by a receiving process described later. X3, Y
3, a data area Z0 for storing time difference data (PWTT) at rest measured when receiving blood pressure data from the blood pressure measurement device 2 by a reception process described later, and blood pressure data received from the blood pressure measurement device 2 by this reception process described later A data area Z1 for storing time difference data immediately after exercise measured when performing the blood pressure measurement device 2 by a reception process described later.
A data area Q2 for storing resting pulse data measured when receiving blood pressure data from the blood vessel, and a data area Q3 for storing pulse data immediately after exercise measured when receiving blood pressure data from the blood pressure measuring device 2 by a receiving process described later. , A data area d for storing resting measurement time data received from the blood pressure measurement device 2 by a reception process described later.
0, t0, data areas d1 and t1 for storing measurement time data immediately after exercise received from the blood pressure measurement device 2 by a reception process described later, and a constant area a for storing constants of blood pressure calculation functions of pulse wave transit time and blood pressure. , B, c, d, etc.

The control unit 60 has a CPU and the like, and the RAM 6
While using 2 as a work memory, each part of the electronic wristwatch-type blood pressure monitor 4 is controlled according to the program in the ROM 61 to perform the processing as the electronic wristwatch-type blood pressure monitor 4.

In particular, when the blood pressure data is received from the blood pressure measuring device 2, the control unit 60 measures the time difference data and pulse data at rest and immediately after exercise by the optical element unit 45 and the detection electrode pair 68 and transfers them. RAM6 for the received blood pressure data and the time difference data and pulse data measured at this time
The storage process to 2 is performed. The control unit 60 also performs arithmetic processing of blood pressure data based on the measured time difference data, pulse data, and blood pressure data stored in the RAM 62. Further, the control unit 60, as described later, the data areas d0, t0, d1 of the RAM 62 of the received measurement time data,
The storage processing to t1 is performed.

The oscillator 63 is composed of, for example, a crystal oscillator, generates a clock signal of a predetermined constant period, and outputs it to the frequency dividing circuit 64.

The frequency dividing circuit 64 has a timing generator in addition to the frequency dividing circuit, divides a clock signal input from the oscillator 63 to output a time measuring signal, and outputs each part of the electronic wrist watch type sphygmomanometer 4. Timing signals for time-series control are output to the control unit 60.

The key input section 65 has the key switch S1.
To S4 are collectively referred to as key switches S1 to S4.
The operation signal of No. 5 is output to the control unit 60. The control unit 60
As will be described later, based on this operation signal, the key input unit 6
Processing corresponding to the operation of each key of No. 5 is performed.

The optical element section 45 is connected to the optical detection control section 66, and the drive of the optical element section 45 is controlled under the control of the control section 60 to detect the pulse or to detect the data described later. It is sent to the control unit 60.

That is, in the optical element unit 45, the fingertip of the human right hand is applied to the concave surface 58, the pulsating flow of blood in the blood vessel of the fingertip of the right hand is detected, and the detection result is detected by the optical detection control unit. To 66.

The detection of this pulsating flow is carried out by utilizing the property that hemoglobin in blood absorbs light of a specific wavelength well.

That is, the optical detection control section 66 drives the LED 43 of the optical element section 45 to cause the fingertip applied to the concave surface 58 from the LED 43 to emit light of a specific wavelength, and the emitted light is emitted from the fingertip. After passing through the skin surface, it is reflected and incident on the phototransistor 44. At this time, the light applied to the fingertip is absorbed by hemoglobin in the bloodstream in the blood vessel, and the amount of reflection on the phototransistor 44 decreases in inverse proportion to the amount of hemoglobin, that is, the amount of bloodstream. Therefore, when the pulsating flow passes through the blood vessel of the fingertip, there is a large amount of blood flow, and the amount of light emitted from the LED 43 and incident on the phototransistor 44 decreases in accordance with the amount of the blood flow. As a result, the amount of light incident on the phototransistor 44 increases / decreases in accordance with the pulse, and the phototransistor 44 converts the increase / decrease in incident light into a voltage signal and outputs the voltage signal to the optical detection control unit 66. .

The optical detection controller 66 converts this voltage signal into a digital signal and outputs it to the controller 60 as a pulse signal.

The heart wave detection control unit 67 includes a detection electrode pair 6
8 is connected, and the detection electrode pair 68 is composed of the cardiac radio wave detection electrode 47 and the back cover 54. When the electronic wristwatch sphygmomanometer 4 is attached to the wrist of the left hand by the band 50, the back electrode 54 of the detection electrode pair 68 comes into contact with the left wrist, and the electrocardiographic detection electrode 47 is contacted with the fingertip of the right hand. I will be hurt. In this state, the detection electrode pair 68 detects an electrocardiographic wave (electrocardiogram R wave) from the left wrist and the fingertip of the right hand, and outputs it to the electrocardiographic wave detection control unit 67. The cardiac radio wave detection control unit 67 digitally converts the cardiac radio wave input from the detection electrode pair 68 and outputs it to the control unit 60.

This cardiac radio wave is an electric signal that instantaneously flows in the body, reaches the body surface at the same time as the pulsation of the heart that generates the R wave, and is detected by the detection electrode pair 68. On the other hand, the above-mentioned pulse reaches the body surface, that is, the fingertip, after the generation time of the sent out pulsation, due to the resistance due to the characteristics of the blood vessel and other reasons, and reaches the optical element unit 45.
Detected by.

The driver 69 operates under the control of the control section 60 and causes the display section 42 to display and output the display data transferred from the display register DR of the RAM 62.

The electronic wristwatch-type sphygmomanometer 4 receives the blood pressure data detected by the blood pressure measuring device 2 and the measurement time data of this blood pressure data via the transfer device 3, and the RA
Store in M62. When the blood pressure data and the measurement time data are transferred, the electronic wristwatch-type blood pressure monitor 4 is mounted on the transfer device 3 as shown in FIG.

That is, the electronic wrist watch type sphygmomanometer 4 is installed with its display section 42 facing upward, and the transfer device 3 is placed on the electronic wrist watch type sphygmomanometer 4 at a position where the transparent member 33 faces the display section 42. Cover. At this time, the optical element 30 of the transfer device 3 faces the optical element part 45 of the electronic wristwatch-type blood pressure monitor 4 as shown in FIG. Optical signals are exchanged with the element unit 45. In FIG. 11, reference numeral 70 denotes a protective glass provided on the front surface side of the optical element 30 of the transfer device 3.

Optical element section 4 of this electronic wrist watch type sphygmomanometer 4
5 and the optical element 30 of the transfer device 3 are specifically shown in FIG.
It is configured as shown in.

That is, the optical element section 45 and the optical element 30.
Is the glass 48 of the electronic wristwatch-type blood pressure monitor 4 as described above.
And the glass 70 of the transfer device 3 are sandwiched therebetween, the optical element portion 45 is a light emitting diode 45a and a photo diode 45b, and the optical element 30 is an optical diode 3
0a and the phototransistor 30b.

The light emitting diode 45a of the optical element section 45
Has its cathode connected to the transistor Tr via the resistor R1.
1 is connected to the collector of the transistor Tr1, and the emitter of the transistor Tr1 is connected to the positive electrode side of the DC power supply VE1. A drive signal is input to the base of the transistor Tr1 from the optical detection control unit 66 of FIG. 8, and the current flowing in the transistor Tr1 is changed by this drive signal, so that the light emission of the light emitting diode 45a is turned on / off. , The amount of light changes.

The photo diode 45b of the optical element section 45 has its anode grounded, its cathode connected to the anode of the light emitting diode 45a through the resistor R2, and the negative side of the DC power supply VE1. ing. The cathode of the photo diode 45b is connected to the optical detection control unit 66 of FIG. 8 via the inverter IN1, and the potential on the cathode side of the photo diode 45b is input to the optical detection control unit 66 via the inverter IN1. To be done.

The photo diode 45b is irradiated with the light emitted from the light emitting diode 30a of the optical element 30 facing the photo diode 45b, and a current corresponding to the irradiated light flows through the photo diode 45b. Therefore, the photo diode 4
The potential on the cathode side of the photo diode 45b changes in accordance with the amount of light emitted to 5b.
Is output to the optical detection control unit 66 via.

Phototransistor 30b of optical element 30
Has its collector connected to the DC power supply VE2 via the resistor R3 and is connected to the driver 28 of FIG. 2 via the inverter IN2, and its emitter is grounded.

The light emitting diode 30a of the optical element 30 is
Its anode is connected to the DC power supply VE2, and its cathode is connected to the collector of the transistor Tr2 via the resistor R4. The emitter of the transistor Tr2 is grounded, and the base of the transistor Tr2 is connected to the driver 28 shown in FIG.

A current corresponding to a drive signal input from the driver 28 flows through the base of the transistor Tr2,
The amount of light emitted from the light emitting diode 30a changes according to the value of the current flowing through the transistor Tr2.

Irradiation light from the light emitting diode 45a of the opposing optical element section 45 is incident on the phototransistor 30b, and a current corresponding to the light amount of the irradiation light flows through the phototransistor 30b. Therefore,
The potential on the collector side of the phototransistor 30b changes in accordance with the amount of light emitted to the transistor 30b, and the potential on the collector side is passed through the inverter IN2 to the driver 28.
Is output to.

As described above, by controlling the driving of the light emitting diode 45a and the light emitting diode 30a between the optical element section 45 of the electronic wrist watch type sphygmomanometer 4 and the optical element 30 of the transfer device 3, the light emission amount is controlled. Can control and exchange optical signals.

Next, the operation of this embodiment will be described.

The system sphygmomanometer 1 transfers the blood pressure data and the measurement time data measured by the direct type blood pressure measuring device 2 to the electronic wrist watch type sphygmomanometer 4 by using the transfer device 3, and the electronic sphygmomanometer is small and convenient to carry. The wristwatch-type blood pressure monitor 4 is used to easily and accurately measure the pulse wave.

Further, the time data related to the measurement time data transferred from the blood pressure measuring device 2 to the electronic wrist watch type blood pressure monitor 4 is appropriately displayed on the display unit 42 to check the latestness of the blood pressure data received from the blood pressure measuring device 2. By making a determination, the accuracy of measurement of blood pressure data by the electronic wristwatch blood pressure monitor 4 is improved.

The blood pressure measurement process in the blood pressure measurement device 2, the transfer process using the transfer device 3, the blood pressure data reception process in the electronic wristwatch blood pressure monitor 4, and the blood pressure measurement calculation process will be sequentially described below.

<Processing by Blood Pressure Measuring Device> First, the process of measuring blood pressure data by the blood pressure measuring device 2 by the direct method and transferring the blood pressure data to the electronic wrist watch type blood pressure monitor 4 via the transfer device 3 will be described with reference to FIG. This will be described based on the flowchart of No. 13.

The blood pressure measuring device 2 is, as shown in FIG.
When the power is turned on (step S1), initialization processing such as resetting various registers is performed. At this time, the RAM
"0" is set in the mode flag area M and the mode flag area L of 23 (step S2).

When the initialization process is completed, the operation keys K1 to
It is checked whether or not there is a key input of K3 (step S3), and if there is a key input, it is checked whether or not the input key is the operation key K1 for mode switching (step S4).

When the operation key K1 is pressed, it is checked whether the mode flag M indicating the current mode is "0" (step S5). This mode flag M is
When "0", it indicates the blood pressure measurement mode, and when "1",
The transfer mode is shown.

At step S5, the mode flag M is "0".
When, the mode flag M is set to "1" (step S6), and when the mode flag M is "1", the mode flag M is set to "0" (step S7).

That is, when the operation key K1 is turned on,
By checking the mode flag, it is checked whether the mode at the time of input is the blood pressure measurement mode or the transfer mode, and when the current mode is the blood pressure measurement mode,
The mode is switched to the transfer mode, and when the current mode is the transfer mode, the mode is switched to the blood pressure measurement mode.

At step S4, the operated operation key K1 is turned on.
If K3 is not the operation key K1, the operation key K2
Is pressed (step S8), and when the operation key 2 is pressed, it is checked whether the mode flag M is "0" (step S9).

The operation key K2 is a key for switching between a rest mode for measuring blood pressure at rest and an exercise mode for measuring blood pressure immediately after exercise in the blood pressure measurement mode.

At step S9, the mode flag M is "0".
If it is not, the transfer mode is set, so that the processing is terminated without performing the subsequent processing.

In step S9, the mode flag M is "0".
At the time of, it is checked whether or not the mode flag L indicating whether the measurement mode is the rest mode or the exercise mode (when L = "0" indicates the rest mode) is "0" (step S10).

In step S10, when the mode flag L is "0", it is determined that the measurement mode when the operation key K2 is pressed is the first rest mode for blood pressure measurement, and the mode flag M is set to "1". , And switch to the exercise mode (step S11).

In step S10, when the mode flag L is "1", it is determined that the measurement mode when the operation key K2 is pressed is the exercise mode, the mode flag L is set to "0", and the rest is performed. The mode is switched (step S12).

That is, after the operation key K1 is set to the measurement mode, the rest mode and the exercise mode are sequentially switched every time the operation key K2 is pressed.

In step S8, when the operated operation keys K1 to K3 are not the operation key K2, it is checked whether or not the operation key K3, which is the execution key for executing the process, is operated (step S13). When K3 is turned on, it is checked whether the mode flag M is "0" (step S14).

In step S14, it is checked whether the mode flag M is "0", that is, when the blood pressure measurement mode is set, the mode flag L is "0" (step S15).

In step S15, when the mode flag L is "0", it is determined that the blood pressure measurement mode is the rest mode for measuring the blood pressure at rest, and the blood pressure measurement process is performed to obtain the measured maximum blood pressure data. The minimum blood pressure data is stored in the data area X0 of the RAM 23, and the measurement time of the blood pressure data at rest is acquired, the measurement date data is stored in the data area D0 of the RAM 23, and the measurement time data is stored in the RAM 23. Data area T
It is stored in 0 (step S16).

As described above, this blood pressure measurement process is performed by CP
According to the instruction of U21, the blood pressure control unit 25 causes the air pump 26 to
Is driven to supply air to the cuff 12 wrapped around the arm or finger at a predetermined rate in a resting state to pressurize the arm or finger wrapped around the cuff 12. Cuff 1 at this time
The sensor 27 detects a change in blood flow in the arm or finger in 2 to detect the presence / absence of pulsation of blood vessels, and the blood pressure control unit 25 detects the systolic blood pressure from the pressure when the pulsation is stopped. Output to. Thereafter, the blood pressure control unit 25 drives the air pump 26 to extract the air in the cuff 12 by a predetermined ratio,
While depressurizing, the sensor 27 is checked to start the pulsating flow of blood vessels. When the pulsating flow of this blood vessel is started, the blood pressure control unit 25 detects the minimum blood pressure from the pressure at this time, and the CPU
21 is output.

The CPU 21, for example, at the time of detecting both the above-mentioned maximum blood pressure and the minimum blood pressure, acquires the time data at that time from the time counting register T of the RAM 23 and stores it in the data areas D0 and T0 of the RAM 23. .

This blood pressure measurement process is performed at rest and immediately after exercise.
The blood pressure is measured once at rest, and the blood pressure immediately after exercise is measured at the second time.

In this way, when the first blood pressure measurement at rest is completed, the blood pressure data and the measurement time data at that time are stored in the RAM 23, and the operation key K2 is pressed, as described above. , Mode flag L in step S11
Is set to "1" and the operation key K3 is pressed in the next process, the determination in step S15 becomes NO.

In step S15, when the mode flag L is "1", it is judged that the measurement mode is the exercise mode in which the blood pressure is measured immediately after the second exercise, the blood pressure measurement process is performed, and the measured maximum blood pressure data is obtained. Is stored in the data area X1 of the RAM 23, the diastolic blood pressure data is stored in the data area Y1 of the RAM 23, and the blood pressure measurement time data immediately after the exercise is stored in the data area D1 of the RAM 23.
It is stored in T1 (step S17).

This blood pressure measurement process is the same as the blood pressure measurement process in step S16, except that it is performed immediately after exercise.

When the above blood pressure measurement processing is performed, each measured blood pressure data and measurement time are as described above, in each data area X0, Y0, X1, Y1 and data area D0, T0,
After being stored in D1 and T1, they are transferred to the display register D, and the systolic blood pressure and the diastolic blood pressure of the first and second times are displayed on the display unit 16 as shown in FIG. In addition, in FIG.
For simplicity, the measurement time data is not shown.

In this way, the blood pressure data is measured twice, at rest and immediately after exercise, in the RAM 2 of the measured blood pressure data.
When the process of storing data in No. 3 and the process of storing the measurement time in RAM 23 are completed and the operation key K1 is pressed, the mode flag M is set to "1" indicating the transfer mode in step S6.

When the operation key K3 is depressed, the determination in step S14 becomes NO, and the CPU 21 determines that the transfer mode is set, and performs the transfer process (step S18).

This transfer process is similar to the above-mentioned reception process.
Under the control of the CPU 21, the driver 28 drives the optical element 30 of the transfer device 3 so that the electronic wristwatch-type blood pressure monitor 4
A predetermined signal format, for example, R
By exchanging optical signals based on the S-232C standard, the systolic blood pressure data, the diastolic blood pressure data, and the measurement time data stored in the RAM 23 at rest and immediately after exercise are transferred to the electronic wristwatch blood pressure monitor 4.

Further, if the input operation key is other than the operation key K3 in step S13, other key processing such as display processing is performed (step S19).

<Processing by Electronic Wristwatch Blood Pressure Monitor> Next, the blood pressure data receiving process and the blood pressure measurement calculation process by the electronic wristwatch blood pressure monitor 4 will be described with reference to the flowchart shown in FIG.

The control unit 60 of the electronic wrist watch type sphygmomanometer 4 is set to H
In the ALT (standby) state, it is checked which of the clock signal from the frequency divider circuit 64 and the key signal from the key input unit 65 is input (step P1), and the clock signal from the frequency divider circuit 64 is input. And this clock signal and RAM 62
The present time is calculated based on the present time data stored in the time measurement register t of
The time is stored in the time counting register t of M62 and is written in the display register DR (step P2).

When the time counting process is completed, the time data written in the display register DR of the RAM 62 is read out, transferred to the driver 69, and the display time is displayed on the display unit 42 (step P3). The display process will be described later in detail with reference to the flowchart of the display process shown in FIG.

When a key signal is input from the key input section 65 in step P1, it is checked whether or not the key switch S1 is turned on by the key signal from the key input section 65 (step P4), and the key switch S1 is turned on. If so, it is determined that the mode has been switched, and the mode flag N for setting the processing mode is incremented by "1" (step P5).

That is, the blood pressure measuring device 2 is a time mode for measuring the time such as the current time, a time lag measuring mode for simultaneously measuring the time lag (time difference) when the blood pressure data is being measured by the blood pressure measuring device 2, It has a reception mode for receiving the blood pressure data transferred from the blood pressure measurement device 2 via the transfer device 3 and a blood pressure measurement calculation mode for calculating the blood pressure data by measuring the pulse wave transit time when it is desired to know the blood pressure value. Mode flag N is "0".
, The time mode, “1”, the time lag measurement mode, “2”, the reception mode, and “3”, the blood pressure measurement calculation mode.

The mode flag N is reset to "0" after being incremented to "3".

When the mode flag N is incremented, it is checked whether the incremented value of the mode flag N is "1" (step P6).

That is, each time the key switch S1 is turned on, the mode flag N is incremented and the time mode, the time lag measurement mode, the reception mode and the blood pressure measurement calculation mode are sequentially switched.

The time lag means the time difference from the detection timing of the cardiac radio wave by the detection electrode pair 68 to the pulse detection timing by the optical element section 45.

At step P6, the mode flag N is "1".
If not, it is determined that the time lag measurement mode is not set, and the display processing is performed as it is (step P3).

At step P6, the mode flag N is "1".
When, it is judged that it is in the time lag measurement mode,
Set the mode flag F to "0" (step P7),
After that, display processing is performed (step P3). The mode flag F indicates whether the time lag measurement is the first time (F = 0) or the second time (F = 1).

That is, when the time lag measurement mode is entered by turning on the switch S1, first, the mode flag F for setting the number of times of time lag measurement is set to "0" indicating the first time.

In step P4, when the key switch S1 is not turned on, it is checked whether or not the key switch S2 is turned on (step P8). When the key switch S2 is turned on, the mode flag N is "1".
It is checked whether or not it is in the time lag measurement mode (step P9).

At step P9, the mode flag N is "1".
If not, it is determined that the time lag measurement mode is not set, and the display processing is performed as it is (step P3).

At step P9, the mode flag N is "1".
When, it is judged that it is in the time lag measurement mode,
The mode flag F is inverted (step P10) and display processing is performed (step P3).

That is, steps P8 to P1
By the processing of 0, in the time lag measurement mode described later, by turning on the key switch S2, the number of times of time lag measurement can be switched between the first time and the second time.

In step P8, the key switch S2
When the key switch S3 is turned on (step P11), when the key switch S3 is turned on, it is checked whether the mode flag N is "1" or "3" (step P11). P12).

At step P12, when the mode flag N is "1" or "3", it is determined that the mode is the time lag measurement mode or the blood pressure measurement calculation mode, and whether the mode flag G indicating the measurement processing mode is "0". Check (step P13). The mode flag G
Indicates a measurement processing mode when "1"
It is set to "0" in the initial state.

When the mode flag G is "0", since the key switch S3 has been turned on and the mode has been switched, the mode flag G is set to "1" and the measurement process is performed (step P14). ), And then display processing is performed (step P3).

As described above, this measurement processing is performed by the detection electrode pair 68 for detecting the cardiac wave and the optical element section 45 for detecting the pulse.

Similarly, when the key switch S3 is turned on in step P11 and the mode flag N is "1" or "3", the mode flag G is set in step P13.
Is checked, but since the mode flag G is set to "1" in step P14 of the previous process, step P1
Then, the flow shifts to 5 to check whether the mode flag N is "1", that is, whether the mode is the time lag measurement mode (step P15).

In step P15, when the mode flag N is "1", it is determined that the time lag measurement mode is set, and the cardiac wave is detected from the cardiac wave detection result and the pulse detection result measured in the measurement process of step P14. The time difference from the timing to the pulse detection timing is measured, and the measured time difference data and the pulse data are stored in the data areas Z0 and Z1 and the data areas Q2 and Q3 of the RAM 62 (step P16).

In the process of step P16, the mode flag F is checked, and when the mode flag F is "0", the measured data is the data at the first measurement, that is, at rest. , The measured time difference data and pulse data are stored in the data area Z0 and the data area Q2, and when the mode flag F is "1",
Since the measured data is the data at the time of the second measurement, that is, immediately after the exercise, the measured time difference data and the pulse data are stored in the data area Z1 and the data area Q3.

Thereafter, a display process described later is performed (step P3).

In this way, at the time of measuring the blood pressure data at rest and immediately after exercise by the blood pressure measuring device 2, the electronic wristwatch-type blood pressure monitor 4 simultaneously measures the time difference data and pulse data at rest and immediately after exercise and measures them. The time difference data and the pulse data are stored in the data areas Z0 and Z1 and the data areas Q2 and Q3 of the RAM 62.

Then, by turning on the key switch S1,
In step P5, the mode flag N is incremented,
When it is "2", the determination in step P12 is NO.

If the decision in step P12 is NO, it is checked whether or not the mode flag N is "2" (step P18). Now, the key switch S1 is turned on and the mode flag N is set in step P5. Is incremented to "2", it is determined that the mode is the reception mode, and the blood pressure data and the measurement time data are received (step P19).

In the reception process, as described above, the optical element 30 of the transfer device 3 and the optical element section 45 of the electronic wristwatch-type sphygmomanometer 4 exchange optical signals of a predetermined signal format, The systolic blood pressure data and diastolic blood pressure data at rest and immediately after exercise and the measurement time data of these blood pressure data are received.

The electronic wrist watch type sphygmomanometer 4 comprises the blood pressure measuring device 2.
When receiving the systolic blood pressure data and diastolic blood pressure data at rest and immediately after exercise and the measurement time data when these blood pressure data are measured by the blood pressure measurement device 2, first, compare the measurement time data with the current time, It is checked whether or not the received measurement time data is within a predetermined time range from the current time (step P20).

That is, if the measurement time at which blood pressure data is measured by the blood pressure measurement device 2 and the current time are within a predetermined time range, for example, within 120 hours (within 5 days), the blood pressure measured by the blood pressure measurement device 2 is measured. It can be said that the data is blood pressure data indicating the current blood pressure. However, when the measurement time at which the blood pressure measurement device 2 measures the blood pressure data and the current time are not within a predetermined time range, the blood pressure measured by the blood pressure measurement device 2 is measured. The data is old blood pressure data and cannot be said to match the current blood pressure.

Therefore, in Step P20, by checking whether the measurement time at which the blood pressure data was measured by the blood pressure measurement device 2 and the current time are within a predetermined time range at rest and immediately after exercise, respectively,
It is checked whether the blood pressure data measured by the blood pressure measurement device 2 is appropriate blood pressure data.

When the determination in step P20 is YES, it is determined that the blood pressure data measured by the blood pressure measurement device 2 is appropriate blood pressure data, and the received systolic blood pressure data and diastolic blood pressure data at rest and immediately after exercise are received. Is stored in the data areas X2, Y2, X3, Y3 of the RAM 62, and then constant calculation / storage processing is performed (step P21).

The constant calculation / storage process is a process of calculating constants of the blood pressure calculation function of the pulse wave transit time and the blood pressure, and storing the calculated constants in the constant areas a, b, c, d of the RAM 62.

That is, the systolic blood pressure has a linear relationship with the pulse wave velocity (PWV) as shown in FIG. 16, and this systolic blood pressure function straight line is the systolic blood pressure value SE measured immediately after exercise. And its pulse wave velocity T when measuring systolic blood pressure
It is obtained by connecting a point Se indicated by TE and a point Sr indicated by the systolic blood pressure value SR measured at rest and the pulse wave velocity TTR at the systolic blood pressure measurement. When the systolic blood pressure function straight line is determined in this manner, the systolic blood pressure function straight line is represented by Y = aX + b (a and b are constants).
The constants a and b corresponding to the straight line of the systolic blood pressure function are calculated, and the calculation result is stored in the constant areas a and b of the RAM 62.

On the other hand, the lowest blood pressure is as shown in FIG.
The blood pressure value is converted into pulse wave velocity (PWV) and pulse data (1
It has a linear relationship with the value obtained by multiplying the pulse rate per minute), and this minimum blood pressure function line is the minimum blood pressure value DR measured at rest.
And a point Dr represented by a value TTR × PR obtained by integrating the pulse wave velocity and the pulse data at the time of measuring the minimum blood pressure, the minimum blood pressure value DE measured immediately after the exercise, and the pulse wave propagation at the time of measuring the minimum blood pressure. Value obtained by integrating velocity and pulse data TTE x PE
It is obtained by connecting the point De indicated by and. When the minimum blood pressure function line is determined in this way, the minimum blood pressure function line is represented by Y = cX + d (c and d are constants). The calculation is performed and the calculation result is stored in the constant areas c and d of the RAM 62.

When the determination in step P21 is NO, it is determined that the blood pressure data measured by the blood pressure measurement device 2 is not the latest blood pressure data, and NG processing is performed (step P22).

In this NG processing, the received systolic blood pressure data and diastolic blood pressure data at rest and immediately after exercise are stored in the RAM 62.
Character data indicating that the blood pressure data received in the display register D is not appropriate blood pressure data, for example, while prohibiting writing to the data areas X2, Y2 and the data areas X3, Y3 of the RAM 62 ,
This is a process of storing character data such as "please measure blood pressure again".

Thereafter, this character data is displayed in the display register D.
Is transferred to the display unit 42 via the driver 69, and the display unit 42 displays that the measurement is inappropriate (step P3).

Therefore, when the blood pressure data is received from the blood pressure measurement device 2, if the received blood pressure measurement device is not the latest blood pressure data, the received blood pressure data is discarded and a re-measurement is requested to obtain the latest blood pressure data. The received blood pressure data can be stored in the data areas X2, Y2 and the data areas X3, Y3 of the RAM 62, and the constants a, b, c, d are calculated only when
The calculated constants a, b, c, d can be stored in the RAM 62.

When the blood pressure data reception process and constant calculation / storage process are completed in this way, the key switch S1 is turned on again and the mode flag N is incremented (steps P4 and P5).

As a result, the mode flag N is incremented, the mode flag N becomes "3", and the blood pressure measurement calculation mode is entered.

That is, when the switch S3 is turned on, the determination in step P12 becomes YES, and the next step P12
At 13, it is checked whether the mode flag G is "0".

In this blood pressure measurement calculation mode, since the mode flag G is initially set to "0", the mode flag G is set to "1" and the measurement process is performed (step P14).

Also in this measurement process, the time difference data and the pulse data are detected and written in the work area of the RAM 62 in the same manner as above.

When the switch S3 is turned on again,
In step P13, the mode flag G is "1", so the process moves to step P15 to check the mode flag N. Now, since the mode flag N is set to "3", the blood pressure measurement calculation is performed. Perform processing (step P
17).

This blood pressure measurement calculation process is performed in step P14.
In this process, the systolic blood pressure data is calculated from the time difference data between the detection timing of the cardiac wave and the detection timing of the pulse measured in the measurement processing of 1, and the diastolic blood pressure data is calculated from the time difference data and the pulse data.

That is, in the systolic blood pressure function straight line, as shown in FIG. 16, the systolic blood pressure value has a linear relationship with the pulse wave velocity, and the same person has the systolic blood pressure when not resting or immediately after exercise. The pulse wave velocity is measured, and the point S indicated by the measured systolic blood pressure MS and the pulse wave velocity MTT is measured.
t is on this straight line of the systolic blood pressure function.

Therefore, when the pulse wave velocity, that is, the time difference data is known, the systolic blood pressure value can be obtained from the systolic blood pressure function line.

Therefore, the control unit 60 calculates the systolic blood pressure value from the time difference data using the constants a and b stored in the RAM 62.

As shown in FIG. 17, the minimum blood pressure function straight line has a linear relationship between the minimum blood pressure value and the value obtained by multiplying the pulse wave velocity by the pulse data, and the same person is at rest or immediately after exercise. At other times, the diastolic blood pressure, the pulse wave velocity and the pulse are measured, and the point Dt represented by the product MTT × MP of the measured pulse wave velocity and the pulse and the diastolic blood pressure MD.
Is on this straight line of the lowest blood pressure function.

Therefore, if the time difference data and the pulse are known, the diastolic blood pressure value can be obtained from the diastolic blood pressure function line.

Therefore, the control unit 60 uses the constants c and d stored in the RAM 62 to calculate the minimum blood pressure value from the time difference data and the pulse data.

When the blood pressure value measurement / calculation processing is completed in this way, the systolic blood pressure value and the diastolic blood pressure value are calculated as RA.
The data is written in the display register DR of M62 and displayed and output on the display unit 42 (step P3).

When the pressed key is not the key switch S3 in step P11, other key processing is performed (step P23), and then the process returns to the display processing (step P3).

The display process is performed as shown in FIG.

That is, in the display process, first, it is checked whether the mode flag N is "0", that is, whether it is the time mode (step Q1). If YES, the current time acquired by the time counting process of FIG. Is displayed (step Q2).

If the determination in step Q1 is no,
It is checked whether the mode flag N is "1", that is, the time lag measurement mode (step Q
3) If YES, a display indicating that the time difference and pulse are being measured is displayed (step Q4).

If the determination in step Q3 is no,
It is checked whether the mode flag N is "2", that is, whether it is the reception mode (step Q5). If NO, it is judged that the mode flag N is the blood pressure measurement calculation mode of "3", and FIG. The maximum blood pressure and the minimum blood pressure calculated in step P17 are displayed on the display unit 42 (step Q6). Further, the measurement time data stored in the RAM 62 is read and displayed on the display unit 42, and the time difference between this measurement data and the current time is calculated. If the calculated time difference is within a predetermined range, the calculation is performed. The time difference is displayed. Further, when the calculated time difference exceeds the predetermined range, the RAM 62 is transferred from the blood pressure measurement device 2.
It is determined that the blood pressure data stored in is not the latest blood pressure data, and a message to that effect, for example, "Please set the latest blood pressure data" is displayed on the display unit 42 (step Q7). .

When the determination in step Q5 is YES, it is determined that the reception mode is set, and it is checked whether or not it is NG, that is, whether or not the NG process is performed in step P22 of FIG. 15 (step Q8). Sometimes
It has been determined that the latest blood pressure data has not been reached because the time has elapsed since the blood pressure data was measured by the blood pressure measurement device 2, and the blood pressure data was transferred to the blood pressure measurement device 2 as described above. A message indicating that measurement is requested is displayed (step Q
9).

If the determination in step Q8 is no,
A display indicating that the blood pressure data is being received is displayed on the display unit 42 (step Q10).

As described above, the system sphygmomanometer 1 measures accurate blood pressure with the blood pressure measuring device 2 of the so-called direct measurement system, and the measured blood pressure data is transferred to the small electronic wristwatch sphygmomanometer 4 via the transfer device 3. Can be easily transferred. Then, the blood pressure can be easily measured by the electronic wave type blood pressure monitor 4 by the pulse wave propagation method.

Therefore, the blood pressure data measured by the blood pressure measuring device 2 can be easily transferred to the electronic wrist watch type sphygmomanometer 4 without key input, and the latest blood pressure can be always maintained without any troublesome key operation. Based on the data, it is possible to accurately measure the blood pressure with the small electronic wrist watch type sphygmomanometer 4.

Further, it is judged whether or not the blood pressure data measured by the blood pressure measuring device 2 and transferred to the electronic wristwatch blood pressure monitor 4 is the latest blood pressure data, and only the latest blood pressure data is received and stored in the RAM 62. Can be stored. Also,
Since the information related to the measurement time data when the blood pressure measurement device 2 measures the blood pressure data is displayed, it is determined whether the blood pressure data stored in the RAM 62 of the electronic wristwatch blood pressure monitor 4 is the latest blood pressure data. Therefore, the blood pressure data stored in the RAM 62 can be kept up to date. And
The blood pressure data can be measured by the electronic wrist watch blood pressure monitor 4 based on the latest blood pressure data in the RAM 62.
As a result, the accuracy of measurement of blood pressure data by the electronic wrist watch blood pressure monitor 4 can be further improved.

Further, the blood pressure data measured by the blood pressure measuring device 2 is transferred to the electronic wrist watch blood pressure monitor 4 as an optical signal by the optical element section 45 of the electronic wrist watch blood pressure monitor 4 and the optical element 30 of the transfer device 3. It is possible to transfer blood pressure data with a simple device, and system blood pressure monitor 1 is simple,
It can be miniaturized.

In the above embodiment, the optical element unit 45 of the electronic wrist watch type sphygmomanometer 4 and the optical element 3 of the transfer device 3 are used.
Although the blood pressure data is transferred according to 0, the optical element 30 may be provided in the case 11 of the blood pressure measurement device 2 and the electronic wristwatch-type blood pressure monitor 4 may be mounted thereon. Further, the blood pressure data may be transferred by another transfer means, for example, by wire or wirelessly using radio waves.

In the above embodiment, the predetermined time is
If the blood pressure data is within 5 days, the blood pressure data is used, but the predetermined time is, for example, 1 week, 3 days,
It can be set to 24 hours or the like.

Further, the electronic wrist watch type sphygmomanometer 4 is used to obtain the time difference and pulse immediately after resting and immediately after exercise for obtaining the constants a, b, c and d. The time difference and pulse data may be transferred to the electronic wristwatch blood pressure monitor 4 together with the blood pressure data.

Further, the blood pressure measuring device 2 measures time difference data, pulse data and blood pressure data, and the values of constants a, b, c and d are calculated from these data, and the constants a, b are calculated. , C, d values may be transferred to the electronic wristwatch sphygmomanometer 4.

[0189]

The blood pressure measuring system according to claim 1 of the present invention.
According to arm, the blood pressure data measured by the blood pressure measuring device,
Without keying, it can easily be transferred to the blood pressure value computing device, without performing troublesome key operations, blood pressure de
You can know the latestness of the data.

According to the blood pressure value computing device of claim 4,
If so, it is possible to know the latestness of the blood pressure data.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an embodiment of a system sphygmomanometer of the present invention.

FIG. 2 is a circuit block diagram of the blood pressure measurement device of FIG.

FIG. 3 is a format diagram of a RAM of the blood pressure measurement device of FIG.

FIG. 4 is an enlarged front view of the electronic wrist watch type sphygmomanometer of FIG.

FIG. 5 is an enlarged front view of a display unit of the electronic wrist watch type sphygmomanometer.

FIG. 6 is a vertical cross-sectional view of a cardiac radio wave detection electrode portion of the electronic wrist watch-type blood pressure monitor of FIG.

7 is a longitudinal sectional view of an optical element portion of the electronic wrist watch type sphygmomanometer of FIG.

FIG. 8 is a circuit block diagram of an electronic wrist watch type sphygmomanometer.

FIG. 9 is a format diagram of a RAM of the electronic wrist watch type sphygmomanometer of FIG.

FIG. 10 is a front view of the electronic wristwatch-type blood pressure monitor set in the transfer device.

FIG. 11 is a cross-sectional view of the optical element of the electronic wrist watch type sphygmomanometer and the optical element portion of the transfer apparatus when the electronic wrist watch type sphygmomanometer is set in the transfer apparatus.

FIG. 12 is a circuit configuration diagram of an optical element of an electronic wrist watch type sphygmomanometer and an optical element section of a transfer device.

FIG. 13 is a flowchart showing blood pressure measurement / transfer processing in the blood pressure measurement device.

FIG. 14 is a diagram showing a state in which the measurement results of two times of the maximum blood pressure and the minimum blood pressure are displayed on the display unit of the blood pressure measurement device.

FIG. 15 is a flowchart showing a timekeeping process, a time difference and pulse measurement process, a reception process, and a blood pressure measurement process in the electronic wristwatch blood pressure monitor.

FIG. 16 is a diagram showing a correlation between systolic blood pressure and pulse wave velocity.

FIG. 17 is a diagram showing the correlation between the minimum blood pressure and the pulse wave velocity.

18 is a flowchart showing detailed processing of the display processing of FIG.

FIG. 19 is a diagram showing a relationship between pulse wave velocity and blood pressure value.

[Explanation of symbols]

1 system blood pressure monitor 2 Blood pressure measurement device 3 transfer devices 4 Electronic wrist watch blood pressure monitor 11 body case 12 cuffs 13 Air supply pipe 16 Display K1, K2, K3 operation keys 21 CPU 22 ROM 23 RAM 24 key input section 25 Blood pressure control unit 26 air pump 27 Pressure sensor 28 drivers 29 Display driver 30 optical elements 30a light emitting diode 30b photo transistor 31 cases 32 codes 33, 34 notches 41 body case 42 Display 43 LED 44 Phototransistor 45 Optical element 45a light emitting diode 45b photo diode 46 partitions 47 Heart wave detection electrode 48 watch glass S1, S2, S3, S4 key switch 60 control 61 ROM 62 RAM 63 oscillator 64 frequency divider 65 key input section 66 Pulse detection controller 67 Heart wave detection controller 68 detection electrode pair 69 driver TM timer Tr1 and Tr2 transistors R1, R2, R3, R4 resistance IN1, IN2 inverter VE1, VE2 DC power supply

Claims (6)

(57) [Claims] 1. A measured blood pressure value using the cuff, and blood pressure measuring device having a transfer means for transferring data including this measured blood pressure values, de <br/> transferred by said transfer means And a blood pressure value based on the data received by the receiving means, the detection timing of the pulse detection means, and the detection timing of the heart wave detection means. In a blood pressure measurement system comprising a pulse wave propagation type blood pressure value calculation device having display means for calculating and displaying, the blood pressure value measurement device is provided with a measurement time measuring means for measuring the measurement time of the blood pressure value. , said transfer means has means for transferring data, including the measured time measured by said measuring time point measurement means together with the blood pressure, the blood pressure value computing device, the received It reads the measured time from the data received by the stage, a first control means for controlling so as to be displayed on the display unit together with the blood pressure value, and the current time counting means for counting the current time, the first control means The measurement time read by
And the current time measured by the current time measuring means
And calculate the difference between
Blood pressure measuring system characterized by comprising a second control unit that, the. 2. A blood pressure value is measured using a cuff, and this measurement is performed.
With a transfer means for transferring data including the measured blood pressure value
The blood pressure measurement device and the data transferred by the transfer means.
Receiving means for receiving data, pulse detecting means, heart wave detector
And the data received by the receiving means
The detection timing of the pulse detection means and the electrocardiogram detection hand
Calculate and display the blood pressure value based on the step detection timing
And a pulse wave type blood pressure value computing device having a display means for
In the blood pressure measurement system, the blood pressure measurement device includes measurement time measurement means for measuring the measurement time of the blood pressure value.
Together with the transfer hand stage, the measurement with the blood pressure value
The data including the measurement time measured by the constant time measuring means.
And a means for transferring the data, wherein the blood pressure value computing device uses the data received by the receiving means for the measurement time.
The time is read out and displayed on the display together with the blood pressure value.
A first control means for controlling the current time, a current time counting means for measuring the current time, the measurement time read by the first control means, and a current time measured by the current time counting means. a time difference calculating means for calculating a difference between the time difference calculated by the time difference calculating means, a predetermined
If the value is higher than the value, a notification is sent to notify that the blood pressure data should be updated.
Blood pressure measurement system comprising: the knowledge means. 3. The blood pressure value computing device has an arm-wearing shape.
3. The method according to claim 1 or 2, characterized in that
Blood pressure measurement system. 4. Receiving means for receiving data from the outside,
The pulse detecting means, the electrocardiographic wave detecting means, and the receiving means
Blood pressure data included in the received data and the pulse
Detection timing of the detection means and detection of the cardiac radio wave detection means
Pulse wave to calculate and display blood pressure value based on timing and
In the propagation type blood pressure value calculating device, the blood pressure data is calculated from the data received by the receiving means.
Read the measurement time when the blood pressure value was measured based on the data
The first control for controlling the display together with the blood pressure value.
And control means, and the current time counting means for counting the current time, the measuring time which is read by the first control means
And the current time measured by the current time measuring means
Second control means for controlling so as to calculate and display the difference
And a blood pressure value calculating device. 5. Receiving means for receiving data from the outside,
A blood pressure value is calculated based on the pulse detection means, the cardiac wave detection means, the blood pressure data included in the data received by the reception means, the detection timing of the pulse detection means, and the detection timing of the cardiac wave detection means. In a pulse wave propagation type blood pressure value calculating device for displaying, a measurement time at which a blood pressure value based on the blood pressure data is measured is read from the data received by the receiving means, and is controlled to be displayed together with the blood pressure value. and first control means, the measuring time which is read and the current time counting means for counting the present time, by the first control means
And the current time measured by the current time measuring means
And a time difference calculation means for calculating the difference between the time difference and the time difference calculated by the time difference calculation means.
In the above cases, a notification to notify that the blood pressure data should be updated
Blood pressure value calculation apparatus characterized by comprising a means. 6. The blood pressure value computing device has a wrist-worn shape.
The blood according to claim 4 or 5, characterized in that
Pressure value calculator.