JP2002172094A - Blood pressure measurement system and blood pressure arithmetic unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blood pressure measurement system which can accurately and easily measure blood pressure. SOLUTION: This blood pressure measurement system 1 comprises a direct measurement type blood pressure measurement device 2 and a pulse propagation type small size electronic wrist watch model blood pressure meter 3. Measurement of blood pressure is started in the blood pressure measurement device 2 and the electronic wrist watch model blood pressure meter 3 by operating a key on the electronic wrist watch model blood pressure meter 3 and blood pressure data measured by the blood pressure measurement device 2 are transmitted to the electronic wrist watch model blood pressure meter. The electronic wrist watch model blood pressure meter 3 detects received blood pressure data by an electrocardiographic wave detection electrode 35 and an optical element part 34, relates the data with operated pulse propagation time, and stores in a RAM 34. Then, the electrocardiographic wave and the pulse are detected using only the electronic wrist watch model blood pressure meter 3, referred with blood pressure data stored in the RAM 34 to operate the blood pressure value, and displayed on a display part 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blood pressure measurement system and a blood pressure value calculation device for performing blood pressure measurement and blood pressure calculation.

[0002]

2. Description of the Related Art Conventionally, as a method for measuring a human blood pressure,
2. Description of the Related Art A direct measurement method for directly measuring by using air pressure is known. In this direct measurement method, a tube called a cuff is wound around an arm or the like, and air is supplied into the tube by an air pump to apply pressure to a blood vessel. Then, the blood pressure value is measured from the pressure value applied to the blood vessel corresponding to the stop or start of the blood circulation. Therefore, this direct measurement method can measure blood pressure relatively accurately. However, a direct-measurement type sphygmomanometer requires a cuff, an air pump, and a detector for detecting the stop and start of blood flow, which is troublesome and troublesome to measure, and is inconvenient to carry. It was difficult to measure blood pressure casually in daily life.

[0003] Therefore, a so-called pulse wave propagation type sphygmomanometer that measures blood based on the pulse wave propagation velocity has been proposed. This pulse wave propagation type sphygmomanometer calculates the blood pressure by estimating from the time from the detection of the pulse wave at the fingertip to the detection of the heart radio wave (R wave).

[0004] That is, it is known that the pulse wave propagation velocity (PWV) and the blood pressure value have a functional relationship that can be connected by a straight line as shown in FIG. 16, and when a constant of this function (blood pressure calculation function) is set. , By detecting heart radio waves and pulse,
The pulse wave propagation time, that is, the time difference data is calculated from the timing of the heart radio wave and the pulse to obtain the pulse wave propagation speed, and thereby the blood pressure can be calculated.

However, the blood pressure calculation function between the pulse wave propagation velocity and the blood pressure changes depending on a person, and even with the same person over time. Therefore, although there is a linear relationship as shown in FIG. 16, in order to determine the constant of this function, data of the pulse transit time between two points and blood pressure measured in advance by another measuring device are necessary. .

Therefore, conventionally, blood pressure is measured in advance using a direct-measurement type sphygmomanometer or the like, and the blood pressure data is input to a pulse wave propagation-type sphygmomanometer, and the pulse wave propagation time (time difference data) at that time is input. , The blood pressure data and the pulse wave transit time are recorded in a memory, and a constant of the blood pressure calculation function is calculated by the calculation means. In order to perform blood pressure measurement more accurately, it is necessary to frequently perform blood pressure measurement and to update the latest blood pressure data to a pulse wave propagation type sphygmomanometer.

[0007]

However, in such a conventional sphygmomanometer, blood pressure measurement by a direct measurement type sphygmomanometer and blood pressure measurement by a pulse propagation type sphygmomanometer are performed by separate operations. Then, since the operation of inputting and transferring the blood pressure data is performed, there is a problem that the measurement operation is very troublesome. Therefore, an object of the present invention is to provide a blood pressure value calculation device and a blood pressure measurement system in which a blood pressure measurement operation is simple.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 is, for example, as shown in FIGS. 1 to 16, a blood pressure measuring means for measuring blood pressure of a human body and obtaining blood pressure data. Blood pressure measuring device 2 of a direct measurement system, pulse detecting means (for example, control unit 41, optical element unit 34, optical detection control unit 48, etc.), and heart radio wave detecting means (for example, control unit 41, heart radio wave detection) Control unit 49, detection electrode pair 50, etc.)
Calculating means for calculating a blood pressure value based on an output result from the pulse detecting means, an output result from the heart radio wave detecting means, and the blood pressure data (for example, the control unit 41);
In a blood pressure measurement system 1 including a pulse wave type blood pressure value calculation device (e.g., an electronic wristwatch type blood pressure monitor 3 or the like), the blood pressure measurement device receives a measurement instruction signal from the blood pressure value calculation device. A first receiving unit (for example, the infrared transmitting / receiving unit 29 or the like) for performing a blood pressure measurement by the blood pressure measuring unit based on the input of the measurement instruction signal; A first transmitting unit (for example, an infrared transmitting / receiving unit 29 or the like) for transmitting the blood pressure data obtained by the blood pressure measuring unit to the blood pressure value calculating device, wherein the blood pressure value calculating device starts the blood pressure measurement. Instruction means for instructing (for example, the measurement switch 37, the control unit 41, etc.), and when an instruction to start blood pressure measurement is issued by the instruction means, the measurement instruction signal is sent to the blood pressure measurement device. And a second receiving unit (for example, the infrared transmitting / receiving unit 38) that receives the blood pressure data transmitted from the blood pressure measurement device. It is characterized by having.

According to the first aspect of the present invention, when measurement is performed using both the blood pressure measurement device and the blood pressure value calculation device, the measurement instruction from the blood pressure value calculation device is provided by the first receiving means of the blood pressure measurement device. The signal is received, the first control means operates the blood pressure measurement by the blood pressure measurement means based on the input of the measurement instruction signal, and the first transmission means converts the blood pressure data acquired by the blood pressure measurement means to the blood pressure value. It is transmitted to the arithmetic unit, and the start of measurement is instructed by the instruction unit of the arithmetic unit, a measurement instruction signal is transmitted to the blood pressure measurement device by the second transmission unit, and the blood pressure measurement device is transmitted by the second reception unit. Since the transmitted blood pressure data is received, the blood pressure measurement by the blood pressure measurement device is automatically performed only by operating the blood pressure value calculation device, and the operation is simple. Further, the measured blood pressure data is stored in the first blood pressure measuring device.
Is transmitted to the blood pressure value calculating device by the transmitting means, and is received by the second receiving means of the blood pressure value calculating device. Therefore, it becomes unnecessary to input the measurement data by key operation, and the blood pressure data can be easily updated. Based on the blood pressure data, the blood pressure calculation device can measure an accurate blood pressure.

Here, the blood pressure data is data necessary for calculating a blood pressure value, and may be an actual blood pressure value, a pulse rate, a constant of a function for calculating a blood pressure value, or the like.

According to a second aspect of the present invention, in the blood pressure measurement system according to the first aspect, the blood pressure value calculating device includes the pulse detection unit and the cardiac radio wave based on a measurement instruction signal input by the instruction unit. It is characterized by including a detection unit and a second control unit (for example, the control unit 41) for operating the calculation unit.

According to the second aspect of the invention, it is needless to say that the same effects as those of the first aspect can be obtained. In particular, the blood pressure value calculation device is controlled by the second control means. At the same time as the blood pressure measurement is performed in the blood pressure measurement device, and the pulse and heart radio waves are detected and the calculation means are operated in the blood pressure value calculation device. , It is possible to perform simultaneous measurement and calculation by both the blood pressure measurement device and the blood pressure value calculation device.

According to a third aspect of the present invention, in the blood pressure measurement system according to the first or second aspect, the blood pressure value calculation device transmits the blood pressure data to the blood pressure measurement device when the calculation by the calculation means is completed. A third transmission unit (for example, a control unit 41, an infrared transmission / reception unit 38, etc.) for transmitting a request signal for requesting transmission of the blood pressure,
Third receiving means for receiving the request signal (for example, CP
U21, an infrared transmission / reception unit 29, etc.), and wherein the first transmission means transmits the blood pressure data to the blood pressure value calculation device based on the reception of the request signal.

According to the third aspect of the present invention, it is needless to say that the same effects as those of the first or second aspect can be obtained.
A signal requesting transmission of the blood pressure data measured by the blood pressure measurement device is transmitted, and the transmission request signal is received by the third receiving means of the blood pressure measurement device. The blood pressure data is transmitted to the blood pressure value calculation device without any intervention, and the operation of transmitting and receiving the blood pressure data becomes unnecessary.

According to a fourth aspect of the present invention, in the blood pressure measurement system according to any one of the first to third aspects, the calculation means further includes a pulse detection timing by the pulse detection means and a heart rate detection by the heart radio wave detection means. It is characterized by including pulse wave propagation time calculating means (control section 41 and the like) for calculating pulse wave propagation time based on the detection timing of radio waves.

According to the invention described in claim 4, claims 1 to 1 are provided.
It is a matter of course that the same effect as in the invention described in any one of 3 is obtained. In particular, the pulse wave propagation time is calculated by the pulse wave propagation time calculation means from the pulse detection timing and the cardiac radio wave detection timing. As a result, the pulse propagation speed can be determined and accurate blood pressure measurement can be performed.

According to a fifth aspect of the present invention, in the blood pressure measurement system according to the fourth aspect, the blood pressure value calculating device is configured to calculate the blood pressure value based on the pulse transit time calculated by the pulse transit time calculating means and the received blood pressure data. Personal data calculation means (for example, the control unit 41 and the like) for calculating personal data necessary for blood pressure value calculation, and storage means (for example, the RAM 43 and the like) for storing the personal data. I do.

According to the fifth aspect of the present invention, it is needless to say that the same effects as those of the fourth aspect can be obtained. Since the data is calculated and the data is stored by the storage means, after the calculation and storage of the personal data, the measurement of the blood pressure value can be performed accurately using only the blood pressure value calculating device, as in the direct method. , And easy to do. In addition, since the measurement can be performed only by the blood pressure value calculation device, the problems of the pain of the measurer and the inconvenience of carrying by the direct blood pressure measurement device can be solved.

Here, the personal data refers to a constant of a correlation function between the pulse wave propagation velocity and the blood pressure value. For example, personal data such as calculating the blood pressure value by calculating the pulse wave propagation velocity. It is another function data.

According to a sixth aspect of the present invention, in the blood pressure measurement system according to the fifth aspect, the blood pressure measurement device outputs a response signal based on a measurement instruction signal from the blood pressure value operation device. The blood pressure value calculating device includes a response signal transmitting unit (the control unit 41, the infrared transmitting / receiving unit 38, and the like) for receiving the response signal. And wherein the personal data calculating means is executed based on the input of the response signal.

According to the sixth aspect of the present invention, it goes without saying that the same effects as those of the fifth aspect can be obtained. In particular, the response signal is transmitted by the response signal transmitting means of the blood pressure measurement device. Thereby, the reception of the measurement instruction signal from the blood pressure value calculation device is notified to the blood pressure value calculation device,
It is possible to confirm whether or not the transmission and reception of the instruction signal between the blood pressure measurement device and the blood pressure value calculation device have been reliably performed. Further, the blood pressure value calculating device receives the response signal by the receiving means, and the personal data calculation is executed based on the input of the response signal, so that the confirmation of the communication instruction with the blood pressure measuring device is confirmed. After the certainty, the calculation processing of the personal data can be performed, and the measurement error is eliminated.

According to a seventh aspect of the present invention, in the blood pressure measurement system according to the fifth or sixth aspect, the blood pressure value calculating device determines whether or not the processing is a personal data setting process (for example, the control unit 41). Etc.), and wherein the first transmission means transmits the measurement instruction signal when the determination means determines that the processing is the setting processing of personal data.

According to the seventh aspect of the present invention, it is needless to say that the same effects as those of the fifth or sixth aspect of the present invention can be obtained. Therefore, the personal data setting process is started even if the measurer or the like does not perform the operation of the personal data setting process in the blood pressure value calculation device and the blood pressure measurement device, so that the measurement operation is simplified.

The invention according to claim 8 is characterized in that the pulse detecting means comprises:
Heart wave detection means, and a calculation means for calculating a blood pressure value based on the output result from the pulse detection means and the output result from the heart wave detection means and blood pressure data directly measured, In the blood pressure value calculation device, instructing means for instructing the start of blood pressure measurement, transmitting means for transmitting the measurement instruction signal to the external measuring device when the instruction of the blood pressure measurement is instructed by the instruction means, Receiving means for receiving the blood pressure data transmitted from the device.

According to the eighth aspect of the present invention, the results outputted from the heart radio wave detecting means and the pulse detecting means, the measurement instruction is transmitted to the outside by the transmitting means, and the blood pressure data received from the outside by the receiving means. The blood pressure value calculation means calculates the blood pressure value based on the above, so that the blood pressure measurement by the blood pressure measurement device is automatically performed only by operating the blood pressure value calculation device, and the operation is simple. In addition, downsizing of the device has been realized,
Mobile becomes possible.

According to a ninth aspect of the present invention, in the blood pressure value calculating device according to the eighth aspect, the pulse detecting means, the heart radio wave detecting means, and the calculating means based on the input of the measurement instruction signal by the instruction means. And a control means for operating the means.

According to the ninth aspect of the invention, it is needless to say that the same effect as that of the eighth aspect of the invention can be obtained. In particular, the control means detects the pulse based on the input of the measurement instruction signal. Since the means, the heart radio wave detecting means, and the calculating means are operated, it is possible to perform simultaneous measurement and calculation by both the external measuring device and the blood pressure value calculating device by a single operation. Operations are simplified and easier to use.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 16 show an embodiment of the system sphygmomanometer 1 of the present invention. First, the configuration will be described.
FIG. 1 is a diagram showing the overall configuration of a system sphygmomanometer. The system sphygmomanometer 1 includes a direct measurement type blood pressure measurement device 2 and an electronic wristwatch type blood pressure monitor 3 (a blood pressure value calculation device).

The blood pressure measuring device 2 has a box-shaped main body case 11.
And a cuff 12. The main body case 11 and the 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 111, a display unit 112, a communication indicator lamp 114, a measurement switch 115, an infrared transmitting / receiving unit 29, and the like are provided.

The power switch 111 is a switch for turning on / off the power of the blood pressure measuring device 2.
When the power is turned on by 11, the backlight 113 of the display unit 112 is turned on.

The display unit 112 uses, for example, an LCD (Liquid Crystal Display), and displays various information such as measurement information such as a blood pressure value and operation information of the blood pressure measurement device 2 such as during measurement and data transmission. indicate.

The communication indicator lamp 114 lights up during data transmission / reception. The measurement switch 115 is used to start the measurement when measuring the blood pressure by the blood pressure measurement device 2 alone. The infrared transmission / reception unit 29 transmits and receives data and the like using infrared radio.

The infrared transmitting / receiving section 29 is placed at a position facing an infrared transmitting / receiving section 38 (described later) of the electronic wristwatch type sphygmomanometer 3.

The cuff 12 is formed of an elastic material, is wound around a human arm or finger, and is fixed. The cuff 12
Air is supplied from an air pump 26 (described later) incorporated in the main body case 11 via the air supply pipe 13, and
As the air is extracted, pressure and pressure are reduced on the arm or finger around which the cuff 12 is wound.

That is, the blood pressure measurement device 2 wraps the cuff 12 around a person's arm or finger, supplies air into the cuff 12 with the air pump 26, and applies pressure to the blood vessel. Then, when the blood circulation stops due to 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) is disposed 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 measurement device 2 detects the blood flow in the blood vessel when the blood circulation stops and starts, and obtains the blood pressure data from the pressure in the cuff 12 corresponding to the time when the blood circulation stops and starts.

The blood pressure measuring device 2 is configured as shown in FIG. 2, and includes a CPU 21, a ROM 22, a RAM 23, a key input unit 24, a blood pressure control unit 25, an air pump 26, a sensor 27, a driver 28, and an infrared transmitting / receiving unit 29. Etc. are provided.

The ROM 22 stores programs as the blood pressure measuring device 2 and various system data.
The PU 21 receives the program from the ROM 22 or the electronic transmission / reception unit 2
In accordance with the signal received via the control unit 9, each unit of the blood pressure measurement device 2 is controlled, and the processing as the blood pressure measurement device 2, in particular, the blood pressure measurement process and the transfer process of the measured blood pressure data are performed.

The RAM 23 forms a temporary work area as a work memory for the CPU 21, and has a systolic blood pressure storage unit 23a, a diastolic blood pressure storage unit 23b, and a pulse rate storage unit 23c as shown in FIG. , Forming an area for storing the respective data.

The key input unit 24 is connected to the power switch 11
1 and the measurement switch 115 are collectively referred to. C
The PU 21 scans the operation state of each key of the key input unit 24, and performs a blood pressure measurement process and the like according to the operation state of each key.

The air pump 26 is connected to the air supply pipe 13 shown in the figure, and the air pump 26 supplies air to the cuff 12 through the air supply pipe 13.
The air inside is extracted via the air supply pipe 13.

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

The blood pressure control unit 25 amplifies the detection signal input from the sensor 27, A / D converts the signal, and outputs it to the CPU 21. Further, the blood pressure control unit 25 operates under the control of the CPU 21 to control the driving of the air pump 26. At this time, the CPU 21 outputs a control signal to the blood pressure control unit 25 so as to drive the air pump 26 so that the pressure in the cuff 12 increases or decreases by a predetermined ratio. After D / A conversion of the signal, the signal is amplified and the air pump 26 is drive-controlled.

That is, the CPU 21 controls the blood pressure control unit 25
, The pressure in the cuff 12 is increased at a fixed rate to press the arm or finger of the person. The sensor 27 detects the presence or absence of the blood flow at this time, and outputs a detection signal to the CPU 21 via the blood pressure control unit 25.

Then, the CPU 21 detects the systolic blood pressure and the diastolic blood pressure by recognizing the stop and start of the blood flow based on the detection signal. Then, the CPU 21
The detected systolic blood pressure and diastolic blood pressure are stored in the RAM 23.

Although not shown, the infrared transmitting / receiving section 29 is composed of an infrared light emitting element such as an infrared LED and an infrared light receiving element such as a photodiode. The infrared transmission / reception unit 29 is arranged to face the infrared transmission / reception unit 38 which is also provided in the electronic wristwatch type sphygmomanometer 3 (blood pressure value calculation device), exchanges optical signals, and outputs the maximum signal output from the CPU 21. It is used to transfer the blood pressure data of the high blood pressure and the diastolic blood pressure to the electronic wristwatch type sphygmomanometer 3 and to receive the command signal from the electronic wristwatch type sphygmomanometer 3 and output it to the CPU 21.

Specifically, the measured blood pressure data is radiated as a light signal by the infrared light emitting element, and is radiated to the infrared light receiving element of the electronic wristwatch type sphygmomanometer 3 opposed thereto. The optical signal is received by the infrared light receiving element of the electronic wristwatch type sphygmomanometer 3 and output to the control unit 41 (described later). Similarly, the control signal output from the control unit 41 of the electronic wristwatch type sphygmomanometer 3 is an optical signal,
Of the blood pressure measurement device 2 and irradiates the infrared light receiving device of the blood pressure measurement device 2. The optical signal is received by the infrared light receiving element of the blood pressure measurement device 2 and output to the CPU 21.

The driver 28 operates under the control of the CPU 21, and executes program information stored in the ROM 22,
The display data transferred from the RAM 23 is output to the display unit 112. Specifically, the display data is, for example, a systolic blood pressure value, a diastolic blood pressure value, a pulse rate, and the like.

The electronic wristwatch-type sphygmomanometer 3 has a blood pressure calculation means incorporated in an electronic wristwatch, and has a main body case 31 made of an electrically insulating synthetic resin as shown in FIG. And in the center part, watch glass 32
Is installed.

A display section 33 (liquid crystal display) is provided at the center of the surface of the main body case 31, and a light emitting element 34a such as an infrared LED (light emitting diode) and a phototransistor are provided on the right side of the center. Light receiving element 34
b, an optical element unit 34 for detecting a pulse is provided. Between the light emitting element 34a and the light receiving element 34b, light emitted from the light emitting element 34a is directly transmitted to the light receiving element 34a.
There is provided a partition 34c for preventing the light from entering b. The optical element section 34 is covered with an elliptical transparent protective glass 36 whose size is almost the same. Also, on the right side of the center of the surface of the main body case 31, a heart radio wave detection electrode 3 for detecting a heart radio wave (R wave).
5 are provided. When a fingertip is placed on the protective glass 36 of the optical element section 34, the fingertip comes into contact with the optical element section 34 via the protective glass 36.

Key switches S1 and S2 are provided on the left side surface of the main body case 31. For example, various types of switches, such as for switching a processing mode between a clock mode and a blood pressure mode, for correcting a time, and for lighting a light, are provided. Perform the operation.

A measurement switch 37 is provided below the surface of the main body case 31, and is used for operation when starting measurement.

An infrared transmitting / receiving section 38 is provided above the surface symmetrical with respect to the measuring switch 37. The infrared transmission / reception unit 38 is located at a position facing the infrared transmission / reception unit 29 of the blood pressure measurement device 2 and is used for data transmission / reception.

A band of a predetermined length (not shown) is attached to the upper side and the lower side of the main body case 31.
This band makes it possible to attach to and detach from the wrist of a person.

Display section 33 of electronic wristwatch type sphygmomanometer 3
As shown in FIG. 5, is divided into upper, middle, and lower stages, a dot matrix display unit 331 in the upper stage, a mode etc. display unit 332 in the middle stage, and a large segment display unit in the lower stage. 333 are provided respectively.

The dot matrix display section 331 is
5 × 16 dots can be displayed, and a numerical value indicating the systolic blood pressure value and a numerical value indicating the diastolic blood pressure value are printed on the right side thereof. The dot matrix display unit 331 displays a blood pressure value as a graph and displays other character information.

The mode etc. display section 332 has a mode notifying section 332a for notifying the display mode being executed, and a pulse display section 332b formed of small segments for displaying a pulse and the like.
And a heart display unit 332c formed of heart-shaped segments and blinking during blood pressure measurement to notify that the blood pressure is being measured,
They are formed sequentially from left to right.

The large segment display section 333 displays the current time in the clock mode, and displays the current time in the blood pressure mode.
Displays the highest or lowest blood pressure numerically.

Next, the internal configuration of the electronic wristwatch type sphygmomanometer 3 will be described with reference to FIGS. 6 and 7. FIG. Here, FIG.
FIG. 7 is a lateral cross-sectional view passing through the light receiving element 34b of the optical element unit 34 in the electronic wristwatch type sphygmomanometer 3 of FIG.
FIG. 5 is a longitudinal sectional view similarly passing through the center of the optical element unit 34 of FIG. 4. In addition, a conductive back cover 39 which forms the above-mentioned electrocardiographic wave detection electrode 35 and a pair of electrocardiographic wave detection electrodes is attached to the back side of the main body case 31.

The inside 4 of the electronic wristwatch type sphygmomanometer 3 shown in FIG.
0, a circuit board (not shown) is provided, and the display unit 33 is connected to this circuit board via an interconnector (not shown).
Is connected. 3 and 4 on the circuit board.
As shown in the figure, the optical element part 34, the heart radio wave detection electrode 35
The back lids 39 are each connected by a coil-shaped conductive member (not shown).

The electronic wristwatch type sphygmomanometer 3 has a circuit configuration as shown in FIG.
2, RAM 43, oscillator 44, frequency dividing circuit 45, clock circuit 46, key input unit 47, optical detection control unit 48, heart wave detection control unit 49, heart wave detection electrode pair 50, driver 51,
An infrared transceiver 38 is provided.

The ROM 42 stores a system program and various system data as the electronic wristwatch type sphygmomanometer 3, and particularly stores a program and system data for performing a time measurement process and a blood pressure measurement calculation process.

The RAM 43 forms a temporary work area as a work memory of the control section 40 and also has a storage area. As shown in FIG. 9, the reception maximum pressure value storage section 43a and the reception minimum pressure value Storage unit 43b, pulse wave propagation time storage unit 43c when personal data is set, pulse rate storage unit 43d when personal data is set, maximum pressure value storage unit 43 immediately after exercise
e, a minimum pressure value storage unit 43f immediately after exercise, a pulse wave propagation time storage unit 43g immediately after exercise, a pulse rate storage unit 43h immediately after exercise, a blood pressure calculation constant storage unit 43i, and a measured pulse wave propagation time storage unit 4
3j, a measured pulse rate storage unit 43k, a calculated maximum pressure value storage unit 43l, a calculated minimum pressure value storage unit 43m, and the like.

Specifically, the reception maximum pressure value storage section 43a and the reception minimum pressure value storage section 43b are output from the infrared transmission / reception section 29 of the blood pressure measurement device 2,
The data of the systolic blood pressure value and the diastolic blood pressure value, respectively, received via the infrared transmitting / receiving section 38 are stored. Each blood pressure value data is used to calculate a constant of an individual blood pressure calculation function.

Pulse wave propagation time storage unit 4 when personal data is set
3c and the pulse rate storage unit 43d at the time of setting the personal data, at the same time as measuring the blood pressure value by the blood pressure measuring device,
The pulse wave transit time and the pulse rate measured by the electronic wristwatch type sphygmomanometer 3 are stored.

The post-exercise maximum pressure value storage section 43e, the post-exercise minimum pressure value storage section 43f, the post-exercise pulse wave propagation time storage section 43g, and the post-exercise pulse rate storage section 43h store various data measured at the time of setting personal data. , The calculated systolic blood pressure value, diastolic blood pressure value, pulse wave transit time data, and pulse rate during exercise are stored. Each blood pressure value data is used to calculate a constant of an individual blood pressure calculation function.

The blood pressure calculation constant storage unit 43i stores the correlation between the blood pressure of the subject and the pulse wave propagation time based on various data measured when the personal data is set by the control unit 41 of the electronic wristwatch type sphygmomanometer 3. The derived constant is stored. The identification number is used to calculate the blood pressure using only the electronic wristwatch type sphygmomanometer 3.

The measured pulse wave propagation time storage unit 43j and the measured pulse rate storage unit 43k store the measured pulse wave, which is the radix for calculating the blood pressure using only the electronic wristwatch type sphygmomanometer 3 after setting the personal data. Store the transit time and pulse rate.

The calculated maximum pressure value storage section 43l and the calculated minimum pressure value storage section 43m store personal data based on the pulse wave propagation time and pulse rate measured by the electronic wristwatch type sphygmomanometer 3 after the personal data setting. The systolic blood pressure value and the diastolic blood pressure value calculated based on the constant determined at the time are stored.

The control unit 41 has a CPU and the like.
While using 3 as a work memory, each unit of the electronic wristwatch type sphygmomanometer 3 is controlled in accordance with the program of the ROM 42 to perform processing as the electronic watch type sphygmomanometer 3.

The oscillator 44 is composed of, for example, a crystal oscillator, generates a clock signal having a predetermined constant cycle, and outputs the clock signal to the frequency dividing circuit 45.

The frequency dividing circuit 45 divides the frequency of the clock signal input from the oscillator 44 and outputs a clock signal to the clock circuit 46.

The clock circuit 46 generates a timing signal for controlling each part of the electronic wristwatch type sphygmomanometer 3 in time series from the time signal inputted from the frequency dividing circuit 45, that is, data of hours, minutes and seconds. And outputs it to the control unit 41.

The key input section 47 is provided with the key switch S
1 and S2 and the measurement switch are collectively referred to, and operation signals of the key switches S1 and S2 and the measurement switch 37 are output to the control unit 41. The control unit 41 performs various processes based on the operation signal.

The optical element controller 34 is connected to the optical detection controller 48, and controls the drive of the optical element 34 under the control of the controller 41 to detect a pulse. Then, the optical detection control unit 48 sends the detected pulse to the control unit 41.

More specifically, a fingertip of a person's right hand is applied to the concave surface of the optical element section 34. In this state, the optical element section 34
Detects the blood pulsating flow in the blood vessel at the fingertip of the right hand, and outputs the detection result to the optical detection control unit 48.

The detection of the blood pulsation is performed by utilizing the property that hemoglobin in blood absorbs light of a specific wavelength well.

That is, the optical detection control section 48 drives the optical element section 34 infrared LED to irradiate the fingertip applied to the concave surface from the infrared LED with light of a specific wavelength. After passing through the skin surface, it is reflected and incident on the phototransistor. At this time, the light applied to the fingertip is absorbed by hemoglobin in the blood flow in the blood vessel, and the amount of reflection on the phototransistor decreases in inverse proportion to the amount of hemoglobin, that is, the blood flow. Therefore, when the pulsating flow passes through the blood vessel at the fingertip, the blood flow is large and decreases in inverse proportion to the amount of the blood flow. Therefore, when the pulse flow passes through the blood vessel, the blood flow is large, and the amount of light incident on the phototransistor decreases in accordance with the blood flow. As described above, since the amount of light incident on the phototransistor increases or decreases in response to the pulse, the phototransistor converts the increase or decrease of the incident light into a voltage signal and amplifies the current to perform optical detection. Output to the control unit 48.

Specifically, the optical element section 34 has a circuit configuration, for example, as shown in the circuit diagram of FIG. That is,
Infrared LED (light emitting diode) 34 of optical element section 34
As for a, its anode is connected to the positive electrode side of the DC power supply VE1, its cathode is connected to the collector of the transistor Tr1, and the base of the transistor Tr1 is connected to the optical detection controller 48. Also, the transistor T
The emitter of r1 is connected to the resistor R1 and to the base of the transistor Tr2. Further, the resistor R1 and the emitter of the transistor Tr2 are grounded, and the collector of the transistor Tr2 is connected to the optical detection controller 48.

In the circuit having the above-described structure, when a control current flows from the optical detection control section 48 under the control of the control section 41, the control current becomes the transistor Tr1 and the transistor T1.
Divide to r2. When a driving current flows through the transistor Tr1, the transistor Tr1 is driven and a current flows through the light emitting diode 34a.
1 flows into the resistor R1. The magnitude of the current at this time is determined by the voltage across the resistor R1. The voltage is negatively fed back to the optical detection control unit by the transistor Tr2. In this case, when the voltage of the power supply VE1 drops and the light emitting diode current decreases, the current flowing to the emitter current decreases. Then, the feedback current flowing from the connector of the transistor Tr2 decreases, and the driving current increases. Then, the current flowing through the light emitting diode 34a is amplified by the transistor Tr1, and finally, the voltage across the resistor R1 and the voltage between the base and the emitter become equal. Therefore, even if the voltage of the power supply VE1 changes, the voltage flowing to the light emitting diode 34a is kept constant.

In a circuit similar to that of FIG. 10, the resistance value of the resistor R1 decreases as the temperature becomes lower, so that the voltage across the resistor R1 decreases. Therefore, the base-emitter voltage increases, and the current flowing through the transistor Tr1 increases, so that the current of the light emitting diode 34a flows. This provides a structure in which detection sensitivity at low temperatures is not hindered.

As described above, even if the voltage of the power supply VE1 decreases or the flow of the pulse wave of the human body becomes weak due to a decrease in the environmental temperature, the pulse detection sensitivity does not decrease.

The phototransistor 34b of the optical element section 34 is connected to the optical detection control section 48, and outputs the irradiated optical signal to the optical detection control section 48 as a voltage signal.

The optical detection control section 48 converts this voltage signal into a digital signal and outputs it to the control section 41 as a pulse signal.

The heart radio wave detection control unit 49 includes a detection electrode pair 5
0 is connected, and the detection electrode pair 50 includes the above-mentioned electrocardiogram detection electrode 35 and the back cover 39. When the electronic wristwatch type sphygmomanometer 3 is worn on the wrist by the band, the back cover 39 of the detection electrode pair 50 comes into contact with the wrist, and the fingertip of the opposite hand is applied to the heart radio wave detection electrode 35.
In this state, the detection electrode pair 50 detects a heart radio wave (electrocardiogram R wave) from the fingertip of the hand opposite to the wrist, and outputs it to the heart radio wave detection control unit 49.

The heart radio wave detection controller 49 converts the heart radio wave input from the detection electrode pair 50 into a digital signal,
Output to the control unit 41.

The heart radio wave is an electric signal that flows instantaneously 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 50. On the other hand, the above-mentioned pulse reaches the body surface, that is, the fingertip, and is detected by the optical element section 34 later than the generation time of the sent pulsation due to the resistance caused by the characteristics of the blood vessel and other reasons. Is done.

The driver 51 operates under the control of the control section 41, and causes the display section 33 to display and output display data transferred from the various storage sections of the RAM 43.

The infrared transmission / reception unit 38 is arranged to face the infrared transmission / reception unit 29 of the blood pressure measurement device 2 and exchanges optical signals by infrared light. And, for example, although not shown, it is composed of an infrared light emitting element such as an infrared LED and an infrared light receiving element such as a phototransistor. The optical signal output from the control unit 41 is radiated from the infrared light emitting element and is radiated by the phototransistor of the infrared transmitting / receiving unit 29 of the blood pressure measurement device 2. An optical signal such as blood pressure data emitted from the infrared LED of the blood pressure measurement device 2 is emitted by the infrared light receiving element of the electronic wristwatch type sphygmomanometer 3 and output to the control unit 41.

Next, the operation of this embodiment will be described.

When the blood pressure measurement system 1 of the present invention starts measurement by the electronic wristwatch type sphygmomanometer 3, the electronic wristwatch type sphygmomanometer 3 measures the pulse transit time and the like, and automatically performs the direct type blood pressure measurement. The blood pressure value is measured by the device 2 and the measured data is transferred to the electronic wristwatch type sphygmomanometer 3 to calculate the personal setting value. Thereafter, only the small and portable electronic wristwatch type sphygmomanometer 3 can easily and accurately measure by the pulse wave propagation method.

Hereinafter, the flow of the blood pressure measurement process and the transfer process by the blood pressure measurement device 2 shown in the flowchart of FIG. 11 and the pulse wave propagation time calculation process and the blood pressure data reception by the electronic wristwatch type sphygmomanometer 3 shown in FIG. The flow of the processing and the blood pressure measurement calculation processing will be described.

First, the blood pressure measurement device 2 measures the blood pressure in a direct manner under the control of the electronic wristwatch type sphygmomanometer 3 in order to set the individual setting value of the subject. The process of transferring the information to the total 3 will be described.

When the blood pressure measuring device 2 is turned on (step SA1), the CPU 21 starts operating according to a program stored in the ROM 22. First,
Performs reset processing of the RAM 23, and enters the “standby state”
Is output to the display unit 112 via the driver 28, and waits (step SA2).

Next, in this state, the C
The PU 21 determines whether or not the infrared transmission / reception unit 29 of the blood pressure measurement device 2 has received a communication start signal transmitted from the control unit 41 of the electronic wristwatch type sphygmomanometer 3 via the infrared transmission / reception unit 38 (step SB3 described later). (Step S
A3). Then, when determining that the communication start signal has been received (step SA3: YES), the CPU 21 proceeds to step SA4, and when not receiving the communication start signal (step SA3: NO), proceeds to step SA15. I do. Next, in step SA4, the blood pressure measurement device 2
CPU 21 determines that the measurement is a blood pressure measurement for personal setting. Then, a response signal is transmitted to the electronic wristwatch type sphygmomanometer 3 via the infrared transmission / reception unit 29. And CPU
21 turns on the communication indicator lamp 114 (step SA5).

Next, the CPU 21 issues a pressure start instruction for measuring blood pressure and pulse according to the control of the communication start signal received in step SA3.

Specifically, the blood pressure controller 25 drives the air pump 26 in accordance with an instruction from the CPU 21 to supply the air to the cuff 12 wound around the arm or finger of the subject in a resting state at a predetermined rate. Press the arm or finger around which the cuff 12 is wound. At this time, a change in the blood flow of the arm or the finger in the cuff 12 is detected by the sensor 27 to detect the presence or absence of the pulsating flow of the blood vessel. Then, it outputs to the CPU 21. Thereafter, the blood pressure control unit 25 drives the air pump 26 to extract air in the cuff 12 by a predetermined ratio and reduce the pressure, and the sensor 27 checks that the pulsating flow of the blood vessel starts. When the pulsation of this blood vessel is started, the blood pressure control unit 25 detects the diastolic blood pressure from the pressure at this time,
Output to Further, a sensor 27 provided in the cuff 12 is provided.
The pulse rate is also detected by the
It is output to U21 (step SA6). And CP
U21 stores each blood pressure data in the systolic blood pressure value storage unit 23a, the diastolic blood pressure value storage unit 23b, and the pulse rate storage unit 23c of the RAM 23, respectively.

The above blood pressure measurement processing was performed, and each measured
The blood pressure data of the maximum and minimum blood pressure values and the pulse rate
After being stored in the RAM 23 by the driver 21, the driver 28
Is transferred to and displayed on the display unit 112 (step SA7).

Next, when a measurement data transmission request signal is transmitted from the electronic wristwatch type sphygmomanometer 3 (step SB7),
The CPU 21 determines whether or not the infrared transmission / reception unit 29 has received the measurement data transmission request signal (step SA).
8). When it is determined that the measurement data transmission request signal has been received (step SA8: YES), the process proceeds to step SA9, but when the measurement data transmission request signal has not been received (step SA8: NO), The same processing is repeated.

Next, at step SA9, the CPU 21
Sends a response signal to the reception to the infrared transmission / reception unit 2
The data is transmitted to the electronic wristwatch type sphygmomanometer 3 through step 9 (step SA9).

Next, the CPU 21 extracts the systolic blood pressure value and the diastolic blood pressure value stored in the RAM 23 according to the request signal of step SA8, and transmits the measured data to the electronic wristwatch type sphygmomanometer 3 (step SA1).
0).

Next, the CPU 21 transmits a communication end request signal transmitted from the electronic watch type sphygmomanometer 3 to the infrared transmitting / receiving section 2.
It is determined whether or not No. 9 has been received (step SA11).
Then, when the communication end request signal is received (step S
(A11: YES), the process proceeds to step SA12. If the communication end request signal has not been received (step SA11: NO), the same process is repeated.

Next, at Step SA12, the CPU 2
1 turns off the in-communication indicator lamp 114 in response to the instruction of the communication end request signal (step SA12).

Next, the CPU 21 determines whether or not a predetermined time has elapsed (step SA13). If it is determined that the predetermined time has elapsed (step SA13: YE).
In S), the power is turned off (step SA14).
However, if it is determined that the certain time has not elapsed (step SA13: NO), the same process is repeated.

On the other hand, when the power is turned on to blood pressure measuring device 2 (step SA1) and CPU 21 determines that a communication start request signal from electronic wristwatch type sphygmomanometer 3 is not received during standby (step SA2). (Step SA3: NO), the CPU 21 further determines whether or not the measurement switch 115 of the blood pressure measurement device 2 is turned on (Step SA15). If it is determined that the measurement switch 115 has been turned ON (step SA15: YES), the CPU 21 determines that the measurement is to be performed by the normal blood pressure measurement device 2. Then, the blood pressure and the pulse are measured in the same manner as in step SA6 (step SA16), and the highest and lowest blood pressure values are calculated in the same manner as in step SA7.
The pulse is displayed on the display unit (step SA17), and the routine goes to step SA13.

On the other hand, when it is determined that the measurement switch 115 is not turned on (step SA15: NO),
Further, the CPU 21 further determines whether a predetermined time has elapsed (step SA18). If the predetermined time has not elapsed (step SA18: NO), the CPU 21 again executes step SA2.
Move to However, if it is determined that the certain time has elapsed (step SA18: YES), the power is turned off.
F (step SA19), and the blood pressure measurement process ends.

Next, pulse wave propagation time calculation processing, blood pressure data reception processing, and blood pressure measurement calculation processing by the electronic wristwatch type sphygmomanometer 3 will be described with reference to the flowchart shown in FIG.

First, the operation when setting personal data will be described. In the present process, first, the subject or the like turns on the blood pressure measurement device 2 (step SA1), and turns on the measurement switch 37 of the electronic wristwatch type sphygmomanometer 3 (step SB).
1) A fingertip of the right hand is put on the optical element unit 34 for pulse detection.

The control section 41, which has received the ON signal of the measurement switch 37, extracts the program stored in the ROM 42, stores the program in the RAM 43, and starts controlling the blood pressure measurement. Then, it is determined whether or not the mode is the personal data setting mode (step SB2).

When control unit 41 determines that the mode is the personal data setting mode (step SB4: YES).
The process proceeds to Step SB3, and if it is determined that the mode is not the personal data setting mode (Step SB2: NO), Step SB
Go to 14.

Next, in step SB 3, a communication start request signal is transmitted to the blood pressure measurement device 2 via the infrared transmission / reception unit 38.

Then, the communication start response is transmitted to the blood pressure measurement device 2.
When the data is received via the infrared transmission / reception unit 38 (step SB4: YES), the start of the measurement process is instructed. When the data is not received (step SB4: NO), the process is repeated.

The measurement process (step SB5) includes a process of detecting a heart radio wave by the detection electrode pair 49 ′ and a process of detecting the optical element 3
4 for detecting a pulse.

More specifically, the detection processing of the heart radio wave is performed by the heart radio wave detection electrode 35 to which the fingertip of the right hand is applied and the back cover 39 to which the left wrist wearing the electronic watch blood pressure is in contact. The electrocardiogram R wave is detected, and the electrocardiogram detection control unit 4
9 is output. Then, the heart radio wave detection control unit 49 converts the heart radio wave into a digital signal and outputs it to the control unit 41.

The pulse detection processing by the optical element section 34 is performed by the light emitting element 34a of the optical element section 34 as described above.
And a light signal that increases or decreases due to the pulsating flow is detected from the light receiving element 34b, and the light signal is converted into a voltage signal by a phototransistor that is the light receiving element 34b and output to the optical detection control unit 48. Then, the optical detection control unit 48
This voltage signal is converted into a digital signal and output to the control unit 41 as a pulse signal.

Next, the control unit 41 determines a time difference (pulse wave propagation time; PWV) from the detection timing of the heart radio wave to the detection timing of the pulse based on the heart radio wave digital signal measured in step SB5 and the pulse digital signal. ) Is calculated (step SB6). Then, the measured time difference data (pulse wave propagation time) and pulse data such as pulse rate are
In the RAM 43, a pulse wave propagation time storage unit 43c when personal data is set and a pulse rate storage unit 4 when personal data is set, respectively.
3d.

Next, the control section 41 transmits a signal requesting transmission of data of the blood pressure value measured by the blood pressure measurement device 2 via the infrared transmitting / receiving section 38 (step SB7).
Then, a signal responding to the request signal is transmitted from the blood pressure measurement device 2 via the infrared transmission / reception unit 29 (Step S).
A9) Therefore, the control unit 41 determines whether a response signal has been received (step SB8). If it has been received (step SB8: YES), the process proceeds to step SB9, but if it cannot be determined (step SB8).
8: NO), the same process is repeated.

Next, since the data of the maximum and minimum blood pressure values are transmitted from the blood pressure measurement device 2 (step SA9), they are received, and the received maximum pressure value storage section 43a and the received minimum pressure value storage section of the RAM 43 are received. Each is stored in the unit 43b (step SB9).

Next, the control section 41 controls the infrared transmitting / receiving section 3
Then, a communication end request signal is transmitted to the blood pressure measurement device 2 via the communication device 8 (step SB10).

The control unit 41 calculates the highest and lowest blood pressure values, pulse wave transit time, and pulse rate immediately after exercise from the blood pressure data received and stored in step SB9 (step SB11). The highest and lowest blood pressure values, pulse wave transit time, and pulse rate immediately after exercise are used when setting personal data, and are necessary values because a person's blood pressure value changes depending on the state of the body. Is calculated as

More specifically, since the blood pressure data value of the exercise value is substantially proportional to the value at rest, it is calculated based on the value at rest. Then, for example, Y = eX + f (e,
(where f is a constant) is obtained by substituting the value at rest into the X part of the equation, and constants e and f representing the correlation with rest are the maximum blood pressure, minimum blood pressure, pulse, pulse wave propagation to be substituted. Each time is different. Then, the control unit 41 calculates the resting value and the constants e and f corresponding to the resting value.
Is applied to the above equation to calculate. Then, the calculated data is stored in the maximum pressure value storage section 43 immediately after the movement of the RAM 42.
e, the minimum pressure value storage unit 43f immediately after exercise, the pulse wave propagation time storage unit 43g immediately after exercise, and the pulse rate storage unit 43h immediately after exercise, respectively.

Next, the control section 41 performs an operation of calculating the personal set value (step SB12). In this calculation process, the control unit 41 calculates a constant of the blood pressure calculation function of the pulse wave propagation time and the blood pressure, and stores the calculated constant in the blood pressure calculation constant storage unit 43i of the RAM 43.

In the arithmetic processing, the pulse wave transit time calculated by the electronic wristwatch type sphygmomanometer 3, the blood pressure data received from the blood pressure measurement device 2, and the blood pressure immediately after the exercise are stored in the respective storage units of the RAM 43. Data is used.

That is, as shown in FIG. 13, the systolic blood pressure has a linear relationship with the pulse wave velocity (PWV), and the systolic blood pressure function straight line represents the systolic blood pressure value SE immediately after exercise and its maximal value. Pulse wave velocity TTE for hypertensive measurements
And a point Sr represented by the systolic blood pressure value SR measured at rest and the pulse wave propagation velocity TTR at the time of measuring the systolic blood pressure. Once the systolic blood pressure function straight line is determined in this way, the systolic blood pressure function straight line is
Since Y = aX + b (a and b are constants), the control unit 41 calculates constants a and b corresponding to the straight line of the systolic blood pressure function, and stores the calculation results in the constant storage unit for blood pressure calculation in the RAM 43. 43i.

On the other hand, the diastolic blood pressure, as shown in FIG.
The blood pressure value is in a linear relationship with a value obtained by multiplying the pulse wave velocity (PWV) by the pulse data (pulse rate per minute), and the diastolic blood pressure function line is defined as a diastolic blood pressure value DR measured at rest, A point Dr indicated by a value TR × PR obtained by integrating the pulse wave propagation velocity and the pulse data at the time of the diastolic blood pressure measurement, a diastolic blood pressure value DE immediately after exercise, and a pulse wave velocity corresponding to the diastolic blood pressure value. Value TTE x PE integrating pulse data
And the point De indicated by When the diastolic blood pressure function straight line is determined in this way, the diastolic blood pressure function straight line is represented by Y = cX + d (c and d are constants). c and d are calculated, and the calculation results are stored in the blood pressure calculation constant storage unit 43i of the RAM 43.

Next, the control section 41 proceeds to step SB9.
In the RAM 43, the systolic blood pressure value, the diastolic blood pressure value received from the blood pressure measuring device 2, and the pulse rate measured in step SB5 are stored.
From the display unit 3 via the driver 51.
3 for display (step SB13), and the personal data setting process by the electronic wristwatch type sphygmomanometer 3 ends.

After the personal setting, the blood pressure can be measured only with the electronic wristwatch type sphygmomanometer 3. The operation at that time will be described below.

The measurer wears the electronic wristwatch type sphygmomanometer 3 on the left wrist, presses the measurement switch, and places the right fingertip on the optical element section 34 (step SB1).

In step SB2, the control unit 41 senses that communication with the blood pressure measurement device 2 is impossible via the infrared transmission / reception unit 38, and performs normal measurement instead of measurement when setting personal data. Is determined (step SB2: NO), the pulse wave, the heart radio wave, and the pulse rate are measured in the same manner as step SB5 (step SB1).
4).

The measured data is stored in the RAM 43.
Measured pulse wave propagation time storage unit 43j, measured pulse rate storage unit 4
3k.

Next, the control unit 41 fetches a constant from the blood pressure calculation constant storage unit 43i stored in the RAM 43, and calculates the pulse wave propagation time measured in step SB15.
Substituting the pulse rate into the systolic blood pressure function and the diastolic blood pressure function,
The highest and lowest blood pressure values are calculated (step SB15), and RA
The calculated maximum pressure value storage unit 43l and the calculated minimum pressure storage unit 43m of M43 are stored.

Next, the highest and lowest blood pressure values and the pulse rate are output to the display unit 33 via the driver 50 and displayed on the display unit 33 (step SB16). finish.

As described above, the blood pressure measurement system 1 can transmit and receive signals via the infrared communication between the blood pressure measurement device 2 and the electronic wristwatch type sphygmomanometer 3 to operate the electronic wristwatch type sphygmomanometer 3 only. , Blood pressure measurement by the electronic wristwatch type 3 and pulse wave propagation method are started, and the blood pressure data measured by the blood pressure measurement device 2 is transmitted to the electronic wristwatch type sphygmomanometer 3. Can be measured.

That is, even when measurement is performed using both devices simultaneously, the latest blood pressure data can always be updated without performing troublesome key operations.

Therefore, the small electronic wristwatch type sphygmomanometer 3
It is possible to measure blood pressure accurately by using only the portable device.

Further, by using the circuit shown in FIG. 10, when detecting a pulse, factors such as a decrease in the flow of the pulse wave of the human body due to a decrease in the environmental temperature may cause a decrease in the pulse wave detection sensitivity. Is detected, the detection of the pulse wave is surely performed.

In the above embodiment, the constants a, b, c,
Although the time difference and the pulse at rest and immediately after exercise for obtaining d are obtained by the electronic wristwatch type sphygmomanometer 3, the time difference and the pulse data measured by the blood pressure measuring device 2 together with the blood pressure data are measured by the electronic watch type. You may make it transfer to the sphygmomanometer 3.

Further, the time difference data, the pulse data, and the blood pressure data are measured by the blood pressure measurement device 2, and the values of constants a, b, c, and d are calculated and obtained from these data. , C, d may be transferred to the electronic wristwatch type sphygmomanometer 3.

Further, in the circuit of FIG. 10, when the current of the control signal from the optical detection control unit is not sufficient, the emitter voltage of the transistor Tr2 is high.
Cannot be driven. Therefore, as a solution in that case, for example, a circuit configuration shown in the circuit diagram of FIG. 15 is used. This will be described below.

As shown in the circuit diagram of FIG. 15, an infrared LED (light emitting diode) which is a light receiving element of the optical element section 34
34a has an anode connected to the collector of the transistor Tr3 and a cathode connected to the transistor Tr4.
Connected to the collector. This transistor Tr4
Is connected to an optical detection control unit 48, and the emitter is grounded. Further, the emitter of the transistor Tr3 is connected to the resistor R2, and one end of the resistor R2 is connected to the power supply VE2. On the other hand, the base of the transistor Tr3 is connected to the series diodes D1 and D2, and the resistor R
3 is connected. Then, it is connected to the anode power supply VE3 of the diode D1, and one end of the resistor R3 is grounded.

In the circuit having the above structure, when a control current flows from the optical detection control section 34a under the control of the control section 41, the control current flows to the transistor Tr4, the transistor Tr4 is turned on, and the current flows to the light emitting diode 34a. It emits light by flowing. The value of the current flowing through the light emitting diode at this time is controlled by the transistor Tr3. The current flowing through the transistor Tr3 is determined by the voltage across the resistor R2, which is a value obtained by subtracting the base-emitter voltage of the transistor Tr3 from the sum of the voltage across the diode D1 and the voltage across the diode D2. is there. Therefore, the current flowing through the light emitting diode 34a also becomes constant with respect to the power supply voltage.

[0143]

According to the blood pressure measurement system according to the first aspect of the present invention, the blood pressure measurement process of the blood pressure measurement device of the direct measurement type is performed by operating the blood pressure value calculation device, and the data is transmitted via the infrared communication. , The blood pressure can be easily and accurately measured without complicated key operations. Therefore, there is no need to perform the measurement processing operation of the blood pressure measurement device 2 or input the measurement data to the blood pressure calculation device by key operation, and it becomes easy to update the blood pressure data. Therefore, the blood pressure value calculation is performed based on the latest blood pressure data. The device can measure blood pressure accurately.

According to the second aspect of the present invention, the blood pressure measurement device and the blood pressure value calculation device start measurement and calculation by one operation of the blood pressure value calculation device, so that the operation is omitted and simplified. .

According to the third aspect of the present invention, after the blood pressure measurement device measures the blood pressure data, the blood pressure data is transmitted to the blood pressure value calculation device without the intervention of the measurer.
The operation of transmitting and receiving blood pressure data becomes unnecessary.

According to the fourth aspect of the present invention, the pulse wave transit time is calculated by the pulse wave transit time calculating means from the pulse detection timing and the cardiac radio wave detection timing. An accurate blood pressure measurement can be performed.

According to the fifth aspect of the present invention, after the calculation and storage of the personal data, the blood pressure value can be accurately and easily measured using only the blood pressure value calculating device. Further, since the measurement can be performed only by the blood pressure value calculating device, the problems of the pain of the measurer and the inconvenience of carrying by the direct blood pressure measuring device can be solved.

According to the sixth aspect of the present invention, it is possible to confirm whether the transmission and reception of the instruction signal between the blood pressure measurement device and the blood pressure value calculation device has been performed reliably, and the measurement error is eliminated.

According to the seventh aspect of the present invention, the personal data setting process is started even if the measurer or the like does not perform the operation of selecting the personal data setting process in the blood pressure value calculating device and the blood pressure measuring device. In addition, the measurement operation is simplified.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of a blood pressure measurement system according to the present invention.

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

FIG. 3 is a format diagram of a RAM of the blood pressure measurement device shown in FIG. 2;

FIG. 4 is an enlarged front view of the electronic wristwatch type sphygmomanometer shown in FIG. 1;

FIG. 5 is an enlarged front view of the electronic wristwatch type sphygmomanometer display unit shown in FIG. 4;

FIG. 6 is a transverse cross-sectional view passing through a light receiving element of an optical element unit in the electronic wristwatch-type blood pressure monitor shown in FIG.

FIG. 7 is a vertical sectional view passing through an optical element in the electronic wristwatch type sphygmomanometer shown in FIG. 4;

FIG. 8 is a circuit block diagram of the electronic wristwatch type sphygmomanometer shown in FIG. 4;

FIG. 9 is a format diagram of a RAM of the potential wristwatch type sphygmomanometer shown in FIG. 4;

FIG. 10 is a first example of a pulse detection circuit diagram.

FIG. 11 is a flowchart showing a flow of the blood pressure measurement device in the blood pressure measurement system according to the present invention.

FIG. 12 is a flowchart showing a flow of the operation of the potential wristwatch type sphygmomanometer in the blood pressure measurement system.

FIG. 13 is a diagram showing a correlation between systolic blood pressure and pulse wave velocity.

FIG. 14 is a diagram showing a correlation between a diastolic blood pressure and a pulse wave propagation velocity.

FIG. 15 is a second example of a pulse detection circuit diagram.

FIG. 16 is a diagram showing a relationship between a pulse wave propagation velocity and a blood pressure value.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 blood pressure measurement system 2 blood pressure measurement device 3 electronic wristwatch type blood pressure monitor 12 display unit 21 CPU 29 infrared transmission / reception unit 34 optical element unit 41 control unit 48 optical detection control unit 49 heart radio wave detection control unit 50 detection electrode pair 51 infrared transmission / reception unit

Claims (9)

[Claims] 1. A blood pressure measuring device of a direct measurement type including a blood pressure measuring means for measuring blood pressure of a human body to obtain blood pressure data, a pulse detecting means, a heart radio wave detecting means, and an output result from the pulse detecting means. A blood pressure value calculating device using a pulse wave radio method, comprising: a calculating device that calculates a blood pressure value based on an output result from the cardiac radio wave detecting device and the blood pressure data. Receiving a measurement instruction signal from the blood pressure value calculation device;
Receiving means, first control means for operating blood pressure measurement by the blood pressure measurement means based on the input of the measurement instruction signal, and transmitting the blood pressure data acquired by the blood pressure measurement means to the blood pressure value calculation device A blood pressure value calculating device, wherein: the blood pressure value calculating device comprises: an instruction unit for instructing a start of a blood pressure measurement; and
Blood pressure measurement, comprising: second transmission means for transmitting the measurement instruction signal to the blood pressure measurement device; and second reception means for receiving blood pressure data transmitted from the blood pressure measurement device. system. 2. The blood pressure measurement system according to claim 1, wherein the blood pressure value calculation device is configured to: the pulse detection unit, the heart radio wave detection unit, and the calculation based on a measurement instruction signal input by the instruction unit. A blood pressure measurement system comprising a second control means for operating the means. 3. The blood pressure measurement system according to claim 1, wherein the blood pressure value calculation device requests the blood pressure measurement device to transmit blood pressure data when the calculation by the calculation unit is completed. A third transmitting unit that transmits a signal; the blood pressure measurement device includes a third receiving unit that receives the request signal; and the first transmitting unit transmits the blood pressure data based on the reception of the request signal. Is transmitted to the blood pressure value calculation device. 4. The blood pressure measurement system according to claim 1, wherein the arithmetic unit further includes a pulse detection timing by the pulse detection unit and a heart radio wave detection timing by the heart radio wave detection unit. A blood pressure measurement system comprising a pulse transit time calculation means for calculating a pulse transit time based on the pulse transit time. 5. The blood pressure measurement system according to claim 4, wherein the blood pressure value calculation device is required for blood pressure value calculation based on the pulse transmission time calculated by the pulse transmission time calculation means and the received blood pressure data. A blood pressure measurement system comprising: personal data calculation means for calculating personal data; and storage means for storing the personal data. 6. The blood pressure measurement system according to claim 5, wherein the blood pressure measurement device transmits a response signal to the blood pressure value calculation device based on reception of a measurement instruction signal from the blood pressure value calculation device. The blood pressure value calculation device comprises: a response signal receiving unit that receives the response signal; and the personal data calculation unit is executed based on the input of the response signal. Measurement system. 7. The blood pressure measurement system according to claim 5, wherein the blood pressure value calculation device includes a determination unit configured to determine whether or not a personal data setting process is performed. A blood pressure measurement system, wherein the measurement instruction signal is transmitted to the blood pressure measurement device when the determination means determines that the setting process is for setting personal data. 8. A pulse detecting means, a heart radio wave detecting means, and a calculation for calculating a blood pressure value based on an output result from the pulse detecting means, an output result from the heart radio wave detecting means and directly measured blood pressure data. Means, in a pulse-wave-type blood pressure value calculation device comprising: an instruction means for instructing the start of blood pressure measurement; and
A blood pressure value calculation device comprising: a transmission unit that transmits the measurement instruction signal to an external blood pressure measurement device; and a reception unit that receives blood pressure data transmitted from the external blood pressure measurement device. 9. The blood pressure value calculating device according to claim 8, wherein the pulse detecting means, the heart radio wave detecting means, and the control means for operating the calculating means based on the input of the measurement instruction signal by the instruction means. A blood pressure value calculation device comprising: