JP3388522B2 - 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. 8. When 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 with 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, the blood pressure data measured by the blood pressure meter of the direct measurement system and the cardiac radio wave data and the pulse data measured by the blood pressure meter of the pulse wave propagation system are suitable when the blood pressure data is input to the blood pressure meter of the pulse wave propagation system. It is necessary to measure accurate blood pressure data with a pulse wave system sphygmomanometer, but it is not possible to judge the suitability of these data until now. The accuracy of blood pressure data measured by a meter was a problem.

Therefore, the present invention provides a blood pressure measurement system capable of accurately and easily measuring blood pressure based on appropriate data.
It is an object of the present invention to provide a blood pressure and blood pressure value computing device .

[0018]

Means for Solving the Problems A blood pressure measurement system of the present invention
As the mu , for example, a cuff is used as described in claim 1.
To measure the blood pressure value, and based on this measured blood pressure value
A blood pressure measuring device having a transfer means for transferring the data,
A receiver that receives the data transferred by the transfer means
Store the data received by this receiving means
Storage means, pulse detection means, cardiac wave detection means, and
The data received by the receiving means and the pulse detector.
Step detection timing and the detection timing of the cardiac radio wave detection means
Display means to calculate and display the blood pressure value based on
Blood pressure measurement using a pulse wave propagation type blood pressure value calculation device
In the constant system, the blood pressure value computing device may store the memory.
Equipped with a transmission means for transmitting the data stored in the means
The blood pressure measurement device is based on the blood pressure value measured this time.
When transmitting the following data, it is transmitted by the transmitting means.
The previous data receiving means for receiving data, the pre
Data received by the time data receiving means
Measured this time by comparing with the data based on the determined blood pressure value
The data based on the collected blood pressure value is the data to be transferred
Judgment means for judging whether or not, and judgment by this judgment means
If it is determined that the data is not to be transferred,
Prohibit transfer of data based on the blood pressure value measured this time
The provision of the prohibition means achieves the above object.

Further , the blood pressure value computing device of the present invention is, for example,
For example, the blood pressure data is stored as described in claim 6.
Storage means, pulse detection means, cardiac wave detection means, and
The blood pressure data stored in the storage means and the pulse detection means
Detection timing and detection timing of the cardiac radio wave detection means
Calculating means for calculating the blood pressure value based on
Pulse wave transmission provided with display means for displaying calculation results by steps
Blood pressure data is calculated from the outside by the sowing system blood pressure calculation device.
And the first measurement in which the blood pressure value based on this blood pressure data was measured.
Receiving means for receiving a fixed time and the pulse detecting means,
The second time is the time detected by any of the centering radio wave detecting means.
The time measuring means for measuring the measurement time of
Therefore, the first measurement time received and the time measuring means
The second measurement time measured by
Whether the blood pressure data received by the means is appropriate
And the result of the judgment by this judgment means.
As a result, if it is determined that the blood pressure data is not appropriate, the above reception
Discarding means for discarding blood pressure data received by the means
With the provision of and, the above-mentioned object is achieved.

[0020]

According to the blood pressure measuring system of claim 1 of the present invention .
If so, the blood pressure measurement device measures the blood pressure value using the cuff.
Then, the means for transferring the data based on this measured blood pressure value
Forward. Further, the blood pressure value computing device is configured by the transfer means.
Data received and stored in the storage means
The pulse detecting means, the electrocardiographic wave detecting means, and the receiving means.
The received data and the detection timing of the pulse detection means
Blood pressure value based on the detection timing of the centroid radio wave detection means
Is calculated and displayed. Then, the blood pressure value calculation device transmits
The data stored in the storage means by the means.
Believe that the blood pressure measurement device
When transferring data based on
Receive the received data, and measure the received data and this time.
Measured this time by comparing with the data based on the determined blood pressure value
The data based on the collected blood pressure value is the data to be transferred
Determine whether or not. Data to be transferred as a result of this judgment
If not, based on the blood pressure value measured this time,
Data transfer is prohibited.

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
Judge whether the blood pressure data transferred from the value measurement device is appropriate,
Only appropriate blood pressure data can be transferred, and the accuracy of the blood pressure data measured by the blood pressure value computing device can be improved.

A blood pressure value calculation according to claim 6 of the present invention
According to the device, the storage means stores the blood pressure data, and
The blood pressure data stored in the storage means and the detection data of the pulse detection means.
Based on the iming and the detection timing of the heart wave detection means
The calculation means calculates the blood pressure value and displays the calculation result.
It Then, the receiving means receives the blood pressure data and the blood pressure from the outside.
The first measurement time when the blood pressure value based on the data was measured
Receiving and timing means, the pulse detection means, the heart wave
The time detected by any of the detecting means is used during the second measurement.
The first time counted by the receiving means by the receiving means.
And the second time measured by the time measuring means.
Compared with the measurement time, received by the receiving means
It is determined whether the blood pressure data obtained is appropriate. And
As a result of this judgment, if it is judged that the blood pressure data is not appropriate,
If the blood pressure data received by the receiving means is discarded,
To do.

[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 processing as the blood pressure measurement device 2, in particular, measurement processing of blood pressure, transfer processing of measured blood pressure data, and determination of suitability of the transferred blood pressure data. Perform processing.

The RAM 23 is used as a work memory of the CPU 21, and as shown in FIG. 3, a display register area D, a mode flag area M, a mode flag area L, and systolic blood pressure data measured at rest (first). Data areas X0 and Y0 for storing the lowest blood pressure data, data areas X1 and Y1 for storing the highest blood pressure data and the lowest blood pressure data measured immediately after the exercise (second time), and the blood pressure data measurement time at the time of rest and the blood pressure immediately after the exercise. It has data areas T0 and T1 for storing data measurement times.

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 timer section TM includes, for example, an oscillator and a frequency divider, measures the present time, and outputs it to the CPU 21.

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 results of the timing section TM and stored in the data areas T0 and T1 of the RAM23, and the display register area D of the RAM23. Then, the display is output to the display unit 16 via 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.

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.

The blood pressure measuring device 2 will be described later.
Transfer device 3 for the measured blood pressure data and its measurement time data
The blood pressure data transferred to the electronic wrist watch blood pressure monitor 4 in the previous transfer process is received from the electronic wrist watch blood pressure monitor 4 at this time, and the previously transferred blood pressure data is transferred. And the blood pressure data to be transferred this time are compared, and if the two blood pressure data differ by a predetermined value or more, the transfer of the blood pressure data this time is stopped, and that effect is displayed and output on the display unit 16.

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, and displays the maximum or minimum blood pressure numerically in the blood pressure mode.

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 data area Q3, and a data area Q3 storing pulse data immediately after exercise measured when receiving blood pressure data from the blood pressure measuring device 2 by a reception process described later. When receiving from the blood pressure measuring device 2 by the receiving process described later, a data area t0 for storing the measurement time at which rest time difference data and pulse data are measured, when receiving blood pressure data from the blood pressure measuring device 2 by the receiving process described later It has a data area t1 for storing the measurement time when the time difference data and the pulse data immediately after the exercise are stored, and constant areas a, b, c, d, etc. for storing the constants of the blood pressure calculation function of the pulse wave transit time and the blood pressure. There is.

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, the control unit 60 measures the time difference data and the pulse data with the optical element unit 45 and the detection electrode pair 68, and also acquires the measurement time when these data were measured. Then, the control unit 60 determines whether or not the blood pressure data transferred from the blood pressure measurement device 2 described later is appropriate based on the measured time difference data and pulse data, and further, the measurement time data, and is also transferred. The stored blood pressure data is stored in the RAM 62. Further, the control unit 60
Is the measured time difference data, pulse data, and RAM 62.
The arithmetic processing of the blood pressure data is performed based on the blood pressure data stored in.

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.

Since the electronic wristwatch-type sphygmomanometer 4 has the above-mentioned structure, it has a function as a clock and a function for calculating and measuring a blood pressure value by the pulse wave propagation method, as described later. The blood pressure data which is the basis for calculating the blood pressure value is received from the blood pressure measurement device 2 via the transfer device 3. At this time, the adequacy of the received data is judged and the received blood pressure data is discarded. Or that effect is displayed on the display unit 42. And electronic wrist watch type sphygmomanometer 4
By comparing the adequacy of the received blood pressure data with the time difference data and the pulse data at the time of the previous reception stored in the RAM 62, the time difference data and the pulse data measured at the time of receiving the blood pressure data are compared with each other, as described later. The determination is made by comparing the measurement time at which the blood pressure measurement device 2 measured the blood pressure data with the measurement time at which the time difference data and the pulse data were measured when receiving the blood pressure data.

The electronic wrist watch type sphygmomanometer 4 receives the blood pressure data detected by the blood pressure measuring device 2 via the transfer device 3 and stores it in the RAM 62. When transferring the blood pressure data, the electronic wrist watch type sphygmomanometer 4 is transferred to the transfer device 3 as shown in FIG.
As shown in 0, it is attached.

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.

The 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 anode of the photo diode 45b of the optical element section 45 is grounded, the cathode thereof is connected to the anode of the light emitting diode 45a through the resistor R2, and is connected to the negative side of the DC power source 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 which faces the photo diode 45b, and a current corresponding to the irradiation 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 optical element section 45 which is opposed to the phototransistor 30b is incident on the phototransistor 30b, and a current corresponding to the quantity 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 blood pressure monitor 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 measured by the direct type blood pressure measuring device 2 to the electronic wristwatch sphygmomanometer 4 by using the transfer device 3, and is a small electronic wristwatch sphygmomanometer which is convenient to carry. In 4, the pulse wave propagation method is used to measure easily and accurately.

At this time, the accuracy of measurement of blood pressure data by the electronic wristwatch-type blood pressure monitor 4 is improved by determining whether the blood pressure data transferred from the blood pressure measuring device 2 to the electronic wristwatch-type blood pressure monitor 4 is appropriate. ing.

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, a 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 wristwatch type blood pressure monitor 4 via the transfer device 3 will be described. 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.

In 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.

In 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.

In 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.

At 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 measurement mode is set with the operation key K1, the rest mode and the exercise mode are sequentially switched each time the operation key K2 is turned on.

When the operated operation keys K1 to K3 are not the operation keys K2 in step S8, 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 or not 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 in which the blood pressure at rest is measured, 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 in the data area Y0, and the measurement time at rest is stored in the RAM 23.
The data is stored in the data area T0 of 23 (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.

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 at that time are stored in the RAM 23, and the operation key K2 is pressed.
As described above, when the mode flag L is set to "1" in step S11 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 immediately after the exercise is stored in the data area T1 of the RAM 23 (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 stored in each data area X0, Y0, X1, Y1 and data area T0, T1 and then displayed as described above. It is transferred to the register D, and as shown in FIG. 14, the systolic blood pressure and the diastolic blood pressure of the first and second times are displayed on the display unit 16. In FIG. 14, the measurement time data is not shown for simplicity.

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.

Then, when the operation key K3 is pressed, the determination in step S14 becomes NO, and the CPU 21 determines that the transfer mode is set and shifts to the transfer mode.
Before performing the transfer process, first, the other party's electronic wrist watch type sphygmomanometer 4
To receive the blood pressure data stored in the RAM 62 of the electronic wrist watch blood pressure monitor 4, that is, the blood pressure data transferred to the electronic wrist watch blood pressure monitor 4 in the previous transfer process and stored in the RAM 62 ( Step S18).

In this reception processing, the driver 28 drives the optical element 30 of the transfer device 3 under the control of the CPU 21 so that a predetermined signal format is exchanged with the optical element section 45 of the electronic wrist watch type sphygmomanometer 4. For example, by exchanging optical signals based on the RS-232C standard, the systolic blood pressure data and the diastolic blood pressure data at rest and immediately after exercise stored in the RAM 62 of the electronic wrist watch blood pressure monitor 4 are adjusted to the electronic wrist watch blood pressure. This is the process of receiving from the total 4.

That is, the driver 28 drives the light emitting diode 30a while confirming the received signal from the phototransistor 30b of the optical element 30, and exchanges the optical signal between the photodiode 45b and the light emitting diode 45a. In particular, blood pressure data is received.

When the previous systolic blood pressure data and the diastolic blood pressure data are received by this receiving processing, the received systolic blood pressure data and diastolic blood pressure data transmitted last time are respectively compared with the diastolic blood pressure data and diastolic blood pressure data measured this time, It is checked whether the systolic blood pressure data and diastolic blood pressure data measured this time are within a predetermined range from the systolic blood pressure data and diastolic blood pressure data transferred last time (step S19).

That is, whether the systolic blood pressure data and the diastolic blood pressure data measured this time are different from the systolic blood pressure data and diastolic blood pressure data transferred last time by a predetermined value or more, the systolic blood pressure data and the diastolic blood pressure data measured this time are accurately determined. It is checked whether it is measured, that is, whether it is proper blood pressure data.

When the determination in step S19 is YES, it is determined that the blood pressure data is appropriate, and the transfer process is performed (step S20).

This transfer processing is similar to the above-mentioned reception processing.
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
By exchanging optical signals with the optical element section 45 of
The systolic blood pressure data and the diastolic blood pressure data stored in the RAM 23 at rest and immediately after exercise are transferred to the electronic wristwatch blood pressure monitor 4.

When the determination in step S19 is NO, it is determined that the blood pressure data is inappropriate, and the NG process is performed (step S21).

This NG process is performed by measuring the systolic blood pressure data and diastolic blood pressure data measured this time stored in the data areas X0, X1 and the data areas Y0, Y1 of the RAM 23 and the systolic blood pressure measurement stored in the data areas T0, T1. While deleting the time and the diastolic blood pressure measurement time from the RAM 23,
In the process of storing the character data indicating that the data has been erased and that the measurement was inappropriate, for example, "Retry measurement" in the display register D of the RAM 23 and displaying it on the display unit 16. is there.

Further, when the operated operation key is other than the operation key K3 in step S13, other key processing such as display processing is performed (step S22).

<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 a display process for displaying the present time on the display section 42 is performed (step P3).

When a key signal is input from the key input unit 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 unit 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 has 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 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 S8). 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).

When the mode flag N is "1" or "3" in step P12, 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 process is performed by the detection electrode pair 68 for detecting the cardiac wave and the optical element unit 45 for detecting the pulse.

After that, 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).

When the mode flag N is "1" in step P15, 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. Measures the time difference from the timing to the detection timing of the pulse, RAM
The data is stored in the work area 62. Then, the control unit 60
Time difference data and pulse data measured this time, that is,
The time difference data and the pulse data stored in the work area of the RAM 62 are compared with the time difference data and the pulse data stored in the data areas Z0 and Z1 and the data areas Q2 and Q3 of the RAM 62 to compare the time difference data and the pulse data measured this time. Values are data areas Z0, Z1 and data area Q
2, it is checked whether the values of the time difference data and the pulse data stored in Q3 are within a predetermined range (step P16).

That is, the data area Z0 of the RAM 62,
Z1 and the data areas Q2 and Q3 store time difference data and pulse data measured when blood pressure data is transferred from the blood pressure measurement device 2, and are stored in the electronic wristwatch-type blood pressure monitor 4
As will be described later based on the time difference data and the pulse data, the constants of the systolic blood pressure function line and the diastolic blood pressure function line are calculated, and the blood pressure data is calculated from the measured time difference data and the pulse data based on this constant. Seeking by.
Therefore, the time difference data and pulse data measured this time are
If there is a large deviation from the time difference data and pulse data stored in the data areas Z0, Z1 and the data areas Q2, Q3 of the basic RAM 62, it cannot be said that the proper detection of the cardiac wave and the pulse was performed, and Unable to calculate a proper blood pressure value.

Therefore, in Step P16, whether the measured electrocardiographic signal and pulse have been detected properly depending on whether the measured time difference data and pulse data are within the predetermined range of the time difference data and pulse data stored in the RAM 62. I'm checking.

In step P16, when the time difference data and the pulse data measured this time are within the predetermined ranges of the values of the time difference data and the pulse data stored in the RAM 62, it is determined that the measurement is properly performed, and the measurement is performed. The time difference data and the pulse data that have been set are stored in the data area Z0 of the RAM 62,
Store in Z1 and data areas Q2 and Q3 (step P
17).

Incidentally, the above steps P16 and P1
In the process of 7, the mode flag F is checked,
When the mode flag F is "0", the measured data is the data at the first measurement, that is, at rest, so the measured time difference data and pulse data are stored in the data areas Z0 and Q2, and , And stores the measured time difference data in the data area t0. Further, when the mode flag F is “1”, the measured data is the data at the time of the second measurement, that is, immediately after the exercise, so the measured time difference data and pulse data are stored in the data areas Z1 and Q3. Also, the measured time difference data is stored in the data area t1.

On the other hand, when the determination in step P16 is NO, it is determined that the measured time difference data and pulse data are inappropriate, and NG processing is performed (step P1).
8).

In this NG process, the time difference data and the pulse data measured this time are discarded, writing to the data areas Z0 and Z1 and the data areas Q2 and Q3 of the RAM 62 is prohibited, and the measurement in the display register D is inappropriate. Character data indicating that there was, for example, "Retry measurement"
Is a process of storing character data such as.

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).

In this way, when the blood pressure measuring device 2 measures the blood pressure data at rest and immediately after exercise, the electronic wrist watch type blood pressure monitor 4 simultaneously measures the time difference data and pulse data at rest and immediately after exercise, and measures the data. It is judged whether the time difference data and the pulse data that have been read are appropriate, and only when the measured time difference data and the pulse data are appropriate, the data area Z of the RAM 62 is determined.
The time difference data and the pulse data are stored in 0, Z1 and the data areas Q2, Q3.

Therefore, as will be described later, when receiving the blood pressure data from the blood pressure measuring device 2, when the measured time difference data and pulse data are inappropriate, re-measurement is requested and appropriate time difference data and pulse data are obtained. RAM 62 data areas Z0, Z1 and data area Q
2, can be stored in Q3.

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 P19). 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 reception mode is set, and blood pressure data reception processing is performed (step P2).
0).

In this reception processing, 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. , And receives systolic blood pressure data and diastolic blood pressure data at rest and immediately after exercise, and measurement time data of these blood pressure data.

In this receiving process, the RAM 62
Of the systolic blood pressure data and diastolic blood pressure data stored in the data areas X2, Y2, X3, Y3 of the blood pressure measuring device 2 at rest and immediately after exercise are also transferred to the blood pressure measuring device 2, and based on the blood pressure data in the blood pressure measuring device 2. It is used for the determination process of suitability of blood pressure data.

The electronic wrist watch type sphygmomanometer 4 comprises the blood pressure measuring device 2
When receiving the systolic blood pressure data and the diastolic blood pressure data at rest and immediately after exercise and the measurement time data obtained by measuring these blood pressure data with the blood pressure measuring device 2, the measurement time data is first stored in the data areas t0 and t1 of the RAM 62. The stored measurement time data, that is, the measurement time data at which the electronic wristwatch blood pressure monitor 4 measures the time difference data and pulse data at rest and immediately after exercise, and the received measurement time data is stored in the data area of the RAM 62. It is checked whether or not it is within a predetermined time range with reference to the measurement time data stored at t0 and t1 (step P21).

That is, if the measurement time when the blood pressure measuring device 2 measures the blood pressure data and the measurement time when the electronic wristwatch type blood pressure meter 4 measures the time difference data and the pulse data are within a predetermined time range, the blood pressure measurement is performed. It can be said that the blood pressure data measured by the device 2 and the time difference data and the pulse data measured by the electronic wristwatch-type blood pressure monitor 4 have a correspondence relationship, but the blood pressure data measured by the blood pressure measurement device 2 is determined to be appropriate blood pressure data. can do. However, when the measurement time when the blood pressure measurement device 2 measures the blood pressure data and the measurement time when the electronic wristwatch-type blood pressure monitor 4 measures the time difference data and the pulse data are not within the predetermined time range, the blood pressure measurement device 2 The measured blood pressure data and the time difference data and the pulse data measured by the electronic wristwatch-type blood pressure monitor 4 have a large time lag and cannot be said to be in a correspondence relationship, and the blood pressure data measured by the blood pressure measurement device 2 is appropriate. It cannot be judged as blood pressure data.

Therefore, in step P21, the measurement time at which the blood pressure measurement device 2 measures the blood pressure data and the time at which the electronic wristwatch-type sphygmomanometer 4 measures the time difference data and the pulse data are measured 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 by checking whether each is within a predetermined range.

When the determination in step P21 is YES, it is determined that the blood pressure data measured by the blood pressure measuring 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. Once in RAM6
After storing in the data areas X2, Y2, X3, and Y3 of No. 2,
A constant calculation / storage process is performed (step P22).

The constant calculation / storing 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 measuring device 2 is inappropriate blood pressure data, and NG processing is performed (step P23).

In this NG process, 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 inappropriate, for example, “(2)” is deleted from the work area of the RAM 62 and writing to the data areas X2, Y2 and the data areas X3, Y3 of the RAM 62 is prohibited. This is a process of storing character data such as "Please try the measurement 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, when the received blood pressure measurement device is inappropriate, the received blood pressure data is discarded and a re-measurement is requested, and the user measures the blood pressure. Only when the blood pressure data is measured by the device 2 and the time difference data and the pulse data are measured by the electronic wristwatch blood pressure monitor 4 within a predetermined time range, and the appropriate blood pressure data is received, the data areas X2, Y2 and The received blood pressure data can be stored in the data areas X3, Y3, and the constant a,
It is possible to calculate b, c, d and store the calculated constants a, b, c, d in the RAM 62.

When the blood pressure data reception processing and constant calculation / storage processing are thus completed, 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 is 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, similarly to the 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
24).

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, if 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 uses the constants a and b stored in the RAM 62 to calculate the systolic blood pressure value from the time difference data.

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, when the time difference data and the pulse are known, the minimum blood pressure value can be obtained from the minimum 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 measurement and calculation processing of the blood pressure value is completed in this way, the systolic blood pressure value and the diastolic blood pressure value of the calculation result are RA.
The data is written in the display register DR of M62 and displayed and output on the display unit 42 (step P3).

If the pressed key is not the key switch S3 in step P11, other key processing is performed (step P25), and then the process returns to the display processing (step P3).

In this way, 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 always be maintained without tedious key operation. Based on the data, it is possible to accurately measure the blood pressure with the small electronic wrist watch type sphygmomanometer 4.

Whether or not the blood pressure data measured by the blood pressure measurement device 2 is appropriate blood pressure data is checked by the blood pressure measurement device 2 using the blood pressure data measured this time by the blood pressure measurement device 2 and the previous electronic wristwatch blood pressure monitor 4. By comparing the transferred blood pressure data, the electronic wristwatch-type blood pressure monitor 4 also compares the time difference data and the pulse data measured this time with the time difference data and the pulse data measured when the blood pressure data was previously received from the blood pressure measuring device 2. Further, by comparing the measurement time at which the blood pressure measurement device 2 measures the blood pressure data with the electronic wrist watch blood pressure monitor 4 with the time at which the electronic wrist watch blood pressure monitor 4 measures the time difference data and the pulse data,
Judgment is made and only appropriate blood pressure data is received and stored in the RAM 62 of the electronic wrist watch blood pressure monitor 4, and the time difference data and pulse data at that time are stored in the RAM 62 of the electronic wrist watch blood pressure monitor 4, and this blood pressure data is stored. The blood pressure data can be measured by the electronic wrist watch type blood pressure monitor 4 based on the time difference data and the pulse data. 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 section 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 constants a, b, c,
The electronic wrist watch type sphygmomanometer 4 was used to obtain the time difference and pulse immediately after resting and immediately after the exercise for obtaining d. However, the time difference and pulse data measured by the blood pressure measuring device 2 were measured together with the blood pressure data using an electronic wrist watch. It may be transferred to the blood pressure monitor 4.

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.

Furthermore, in the above embodiment, whether the blood pressure data is appropriate is judged by both the blood pressure measuring device 2 and the electronic wristwatch-type blood pressure monitor 4, but the invention is not limited to this, and the blood pressure measuring device 2 and the electronic wristwatch are not limited to this. It may be judged by either of the blood pressure monitors 4. Further, in the electronic wristwatch-type blood pressure monitor 4, the suitability of the blood pressure data is determined based on the time difference data and the pulse data, and the suitability is determined based on the measurement time, but either one may be used. Furthermore, it goes without saying that the method of determining the suitability of blood pressure data is not limited to the method described in the above embodiment.

In the above embodiment, the blood pressure measuring device 2 compares the blood pressure data to determine the suitability of the blood pressure data. This comparison of blood pressure data is used to determine the suitability of the blood pressure data. Instead, it may be used for other purposes. For example, it may be used to transfer the blood pressure data from the blood pressure measurement device 2 to the electronic wristwatch blood pressure monitor 4. In this case, for example, when the blood pressure data of the blood pressure measurement device 2 and the blood pressure data of the electronic wristwatch blood pressure monitor 4 match, it is determined that there is no need to transfer the blood pressure data, and the blood pressure data is transferred. If it is stopped, the labor of transferring the blood pressure data can be saved.

[0198]

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,
It can be easily transferred to the blood pressure value calculation device without key input, and accurate blood pressure can be measured with the blood pressure value calculation device based on the latest blood pressure data without any troublesome key operation. In addition, it is possible to judge whether the blood pressure data transferred from the blood pressure value measuring device is appropriate or not and transfer only the appropriate blood pressure data, and the accuracy of the blood pressure data measured by the blood pressure value calculating device can be improved.

[0199]

[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.

FIG. 18 is a diagram showing a relationship between a pulse wave velocity and a 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

Continuation of the front page (56) Reference JP-A-4-250135 (JP, A) JP-A-3-74772 (JP, A) JP-A-4-200439 (JP, A) (58) Fields investigated (Int .Cl. ⁷ , DB name) A61B 5/022

Claims (8)

(57) [Claims] 1. A blood pressure value measuring device having a transfer means for measuring a blood pressure value using a cuff and transferring data based on the measured blood pressure value, and a reception device for receiving the data transferred by the transfer means. Means, received by this receiving means
Blood pressure based on the data received by the storage unit for storing the stored data, the pulse detection unit, the cardiac wave detection unit, and the data received by the reception unit, the detection timing of the pulse detection unit, and the detection timing of the cardiac wave detection unit. In a blood pressure measurement system comprising a blood pressure value calculation device of a pulse wave propagation system having a display means for calculating and displaying a value, the blood pressure value calculation device is a transmitter for transmitting the data stored in the storage means.
A step, the blood pressure measuring device, when transferring data based on the blood pressure measured this time,
Previous time to receive the data sent by the sending means
The data receiving means and the data received by the previous data receiving means ,
A determination unit that compares the data based on the blood pressure value measured this time to determine whether the data based on the blood pressure value measured this time is data to be transferred, and the result of the determination made by this determination unit. A blood pressure measurement system, comprising: a prohibition unit that prohibits transfer of data based on the blood pressure value measured this time when it is determined that the data is not to be acquired. 2. The blood pressure measuring device according to claim 1, further comprising warning means for giving a warning to that effect when the judging means judges that the data should not be transferred. Measuring system. 3. A measuring means for measuring a blood pressure value using a cuff, a first timing means for timing the measurement time of the blood pressure value by this measuring means as a first measurement time, and a measuring means for measuring the blood pressure value. A blood pressure value measuring device having a transfer means for transferring data composed of the blood pressure value and the first measurement time measured by the first time measuring means; and a receiving means for receiving the data transferred by the transfer means. A display for calculating and displaying a blood pressure value based on the pulse detection means, the cardiac wave detection means, 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 the blood pressure measurement system including a pulse wave propagation type blood pressure value calculation device having means, the blood pressure value calculation device is any one of the pulse detection unit and the cardiac wave detection unit. Therefore, the second time measuring means for measuring the detected time as the second measurement time, the first measurement time based on the data received by the receiving means, and the second time measuring means for measuring the second time measured by the second time measuring means. A judging means for judging whether or not the data received by the receiving means is appropriate by comparing with the measurement time, and the receiving means when it is judged that the data is not appropriate as a result of the judgment by the judging means. A blood pressure measurement system comprising: a discarding unit that discards the data received by. 4. The blood pressure measurement device according to claim 3, wherein the blood pressure value computing device further comprises warning means for issuing a warning to that effect when the determination means determines that the data is not appropriate data. system. 5. The blood pressure value computing device has a wrist-worn shape.
Blood pressure measurement system according to have become to claim 3 or 4, wherein. 6. Storage means for storing blood pressure data, pulse detection means, cardiac wave detection means, blood pressure data stored in the storage means, detection timing of the pulse detection means, and detection of the cardiac wave detection means. In a pulse wave propagation type blood pressure value calculation device including a calculation means for calculating a blood pressure value based on timing and a display means for displaying a calculation result by this calculation means, a blood pressure data and a blood pressure data based on this blood pressure data are externally supplied. receiving means for the blood pressure value to receive a first measurement time that is measured, and counting means for counting said pulse detecting means, the time detected by any of the electrocardiographic detecting means as a second measurement time, the Blood pressure data received by the receiving means by comparing the first measurement time received by the receiving means with the second measurement time measured by the time measuring means. And a discarding unit that discards the blood pressure data received by the receiving unit if the determination unit determines that the blood pressure data is not appropriate as a result of the determination by the determination unit. A blood pressure value computing device characterized by the above. 7. The blood pressure value computing device according to claim 6, further comprising warning means for giving a warning to that effect when the judging means judges that the data is not appropriate. 8. The blood pressure value computing device has a wrist-worn shape.
Blood pressure value computing device according that is in the to claim 6 or 7, characterized in.