JP2018029944A - Blood information display apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for non-invasively estimating a blood state of a human body.SOLUTION: A blood information display apparatus includes an electrocardiograph unit 10, a sphygmograph unit 20, an input device, and a control part 50. The control part performs, a1: processing of receiving an input of at least body height data (e.g., 170 cm) of a human body, a2: processing of creating electrocardiographic waveform data on the basis of a signal from the electrocardiograph unit, a3: processing of creating sphygmographic waveform data on the basis of a signal from the sphygmograph unit, b1: processing of acquiring a value (T-T), (Tis an appearance time of a peripheral pulse wave and Tis a peak time of the peripheral pulse wave), on the basis of the electrocardiographic waveform data and the sphygmographic waveform data, and b2: processing of acquiring a pulse wave/blood flow interlocking speed V using the body height data and the value (T-T).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a blood information display device that non-invasively estimates the blood state of a human body.

  Conventionally, various devices for estimating the blood state of a human body non-invasively without collecting blood have been proposed (for example, Patent Document 1). The device of this document measures a pulse wave meter that measures a pulse wave at a first part of a living body, an electrocardiograph that measures a heart action potential as a reference pulse at a second part of the living body, and measures blood pressure (P). A sphygmomanometer, a calculation means, and a display means for showing predetermined information to the subject are provided.

Then, the calculation means calculates the propagation time observed between the reference pulse measured by the electrocardiograph and the pulse wave measured by the pulse wave meter, and the distance between the first part and the second part. Based on this, a process for calculating an apparent pulse wave velocity (C) is performed. Further, using the apparent pulse wave velocity (C) calculated and the blood pressure (P) measured by the sphygmomanometer, the blood state index is calculated according to the formula: I = kP / 2C ² (k is a constant) A process of calculating (I) is performed.

  The calculation means further performs a statistical process using a plurality of data of the calculated blood state index (I) to calculate an average value (Im) of the blood state index, and calculates the average value (Im). The processing means for calculating the value of (I-Im) using the blood state index (I), and the display means displays the value of (I-Im) or the blood state corresponding to the value. The processing to be displayed on the screen.

Japanese Patent No. 4323560

  Even with the device of Patent Document 1, it is possible to satisfactorily estimate the blood flow state non-invasively, but the present invention estimates the blood state of the human body non-invasively using a method different from that of Patent Document 1. To provide an apparatus.

An apparatus according to an embodiment of the present invention for solving the above problems is as follows:
An electrocardiograph unit for detecting electrocardiogram information of the human body;
A sphygmograph unit for detecting pulse wave information of the human body;
An input device;
A blood information display device comprising a control unit,
The controller is
a1: a process of accepting input of data relating to at least the height or reach of the human body (for example, the length of the left and right arms spread, half the length);
a2: a process of creating electrocardiographic waveform data based on a signal from the electrocardiograph unit;
a3: processing for creating pulse waveform data based on a signal from the pulse wave unit;
And then
b1: Processing for obtaining a value (T ₂ −T ₁ ) related to the pulse waveform based on the electrocardiogram waveform data and the pulse waveform data (where T ₁ is the time of appearance of the peripheral pulse wave, and T ₂ Is the peak time of the peripheral pulse wave)
b2: Processing for obtaining the pulse wave blood flow interlocking velocity V using the data relating to height or reach and the value (T ₂ -T ₁ );
A blood information display device.

  ADVANTAGE OF THE INVENTION According to this invention, the blood information display apparatus which estimates the blood state of a human body noninvasively can be provided.

It is a block diagram which shows typically the structural example of the blood information display apparatus of this invention. It is a figure which shows typically an example of a structure of an electrocardiograph unit. It is a figure which shows typically an example of a structure of a pulse wave unit. It is a schematic diagram which shows the pulse wave waveform in the heart vicinity, and the pulse wave waveform in the peripheral side. It is a figure which shows the example of a display of information. It is a figure which shows the example of the waveform displayed on a waveform display part. It is a figure which shows typically the electrocardiogram measurement auxiliary tool which concerns on another aspect.

Embodiments of the present invention will be described below with reference to the drawings.
1. Overview of Device Configuration FIG. 1 is a block diagram schematically showing a configuration example of a blood information display device of this embodiment. As shown in FIG. 1, the blood information display device 1 includes a device main body 100, an electrocardiograph unit 10 connected to the device main body, and a pulse wave meter unit 20 connected to the device main body. .

  The apparatus main body 100 may be configured as a computer, for example. As an example, the apparatus main body 100 includes a display device 30 for displaying various information, an input device 61 for a user to perform various inputs, a data reading unit 62 for reading data from an external data storage medium, an external device The communication unit 63 for performing communication with the network or the device and the control unit 50 (for example, a control circuit including a processor) for performing various arithmetic processes may be included. Note that not all of these components are essential, and one or more of them may be omitted.

  As the computer, a desktop PC, a tablet terminal having a touch panel display, a portable terminal (smart phone) having a touch panel display, a portable terminal such as a notebook PC, or the like can be used. The blood information display device 1 (device main body 100) can be configured by installing a computer program according to an embodiment of the present invention in these.

  However, instead of the above configuration, it is also possible to configure as a dedicated device having an arithmetic device such as a microcomputer. In this case, for example, an arithmetic device (processor) is built in a predetermined housing, and the display device 30 is provided in a part of the housing or a display is connected to the housing externally. Also good. The computer program according to one embodiment of the present invention may be stored in a predetermined storage area (memory or the like) in the housing. In the apparatus having such a configuration, the power source may be a battery built in the casing, or may be supplied from a commercial power source using an AC adapter or the like. The input device 61, the data reading unit 62, the control unit 50, the display device 30, and the communication unit 30 illustrated in FIG. 1 may be provided in the casing or a part thereof.

(About the display)
As the display device 30, a liquid crystal panel, an organic EL panel, or the like can be used. A touch panel display in which a touch panel is integrally provided can also be used. The touch panel has a function as an input device because a user can perform various inputs through the touch panel.

(About input devices)
Although it does not specifically limit as the input device 61, A keyboard, a mouse | mouth, a touch panel, etc. are mentioned. Although only one element is depicted in the block diagram of FIG. 1, it is needless to say that a plurality of input devices 61 may be provided. Information input to the apparatus main body 100 via the input device 61 may be one or more of the following:
The age of the user,
The blood pressure value of the user,
-User gender,
-Height of the user,
-Data on user reach, etc.

(About the communication department)
The communication unit 63 communicates with an external network or device by a wired method or a wireless method. When such a communication unit 63 is provided, various calculation results processed by the control unit 50 (specifically, for example, information on the blood state of the user) are transmitted to the outside, and the external This is preferable in that information can be exchanged with a storage medium or another electronic device. In order to realize wireless communication, for example, a Bluetooth (registered trademark) module or the like may be incorporated.

(About the data reading part)
The data reading unit 62 is a device for reading data from a storage medium (CD, DVD, memory medium, etc.) storing predetermined data. It may be a card slot or the like. Although only one element is illustrated in the block diagram of FIG. 1, it is needless to say that a plurality of data reading units may be provided. Examples of data read from the storage medium include a software program to be installed, an update program, and a correction program. A memory card or the like may be used as the storage medium. In this case, the data reading unit 62 is configured as a card slot.

(About ECG unit)
As shown in FIG. 2A, the electrocardiograph unit 10 includes, for example, a housing 13 and a pair of conductive portions 11a and 11b provided in the housing and pressed by a part of the user's left hand and part of the right hand. You may have. The electrocardiograph unit 10 is connected to the apparatus main body 100 via, for example, a cable. The electrocardiograph unit 10 and the control unit 50 are electrically connected, and the control unit 50 creates and displays an electrocardiographic waveform based on the electrical signals from the conductive units 11a and 11b. This function may be executed by a computer program installed in the memory of the control unit 50 or the storage unit 55.

  The control unit 50 preferably displays the electrocardiographic waveform on the display device 30 in real time. While viewing the electrocardiogram waveform displayed on the display device 30, the user can also confirm the normality / abnormality of the waveform. In addition to the normal waveform display unit, an abnormal waveform display unit may be displayed on the display device 30 so as to be a reference for the user's judgment (see FIG. 5). At least one typical abnormal waveform is displayed on the abnormal waveform display section. According to such a configuration, the user can check the normality / abnormality of the waveform by himself / herself while comparing the actual electrocardiographic waveform in the upper stage with the abnormal waveform displayed as a reference. As an apparatus for realizing the above, the control unit 50 is configured to cause the display device 30 to display an abnormal waveform display unit in addition to a normal waveform display unit.

  In addition, although not limited, you may make it use the electrocardiogram measurement auxiliary tool 70 as shown in FIG. The auxiliary tool 70 includes two conductive pad portions 71-1 and 71-2 attached to the body, an earphone type (or earplug type) ground member 73, and a cord connected to them. And a connector portion 75 provided at an end portion of the cord.

  The conductive pad portions 71-1 and 71-2 have flexibility, and are attached (attached) to both hands of the user, for example. The connector portion 75 may be, for example, a so-called mini jack, a first portion that transmits the electrical signal of the conductive pad portion 71-1, and a second portion that transmits the electrical signal of the conductive pad portion 71-2. And a third portion electrically connected to the ground member 73. The connector part 75 is an example and is inserted in the apparatus main body 100 (refer FIG. 1).

  In this example, the ground member 73 is an earphone type, and has a conductive insertion portion 73a to be inserted into the user's ear. The insertion portion 73a as a whole may have a substantially spherical shape, a substantially cylindrical shape, or a shape such as a combination thereof. More specifically, the insertion part 73a may be a part having a circular or oval cross section so as to be in contact with the entire inner periphery of the outer ear hole. The insertion portion 73a may be formed to protrude by a predetermined height from the main body portion 73b that is not inserted into the ear.

  When measuring the ECG data, such a ground member 73 is inserted into the user's ear and grounded, so that the configuration of the present embodiment makes it possible to acquire more stable ECG data. The ground member 73 may be configured by combining a plurality of components, or may be manufactured by casting a conductive metal.

  As a member for grounding the human body, for example, a band, a clip, or the like is assumed. However, according to the earphone-type grounding member 73 as in the present embodiment, the insertion portion 73a is firmly attached to the user's ear. Since it is in contact, it is possible to stably ground, and it is not necessary to take off clothes to attach the ground member.

  In the above description, the connector portion 75 such as a mini jack is exemplified. However, naturally, the connector may be connected to the internal circuit of the apparatus main body 100 instead of the connector connection.

  Instead of the ground member 73, a grounding fixture (not shown) attached to the earlobe may be used. Specifically, it includes a first part that holds down one side of the earlobe, such as an earring, and a second part that holds down the other side of the earlobe, and each part (at least the contact part) is a conductive material. A grounding fixture (not shown) constructed of As a result, the ground can be ground at the earlobe. The first part and the second part may be configured such that one can be close to the other. For example, when one of the first part and the second part is rotated in a screw manner, the one member may be close to the other. Or the said 1st part and 2nd part may be provided as places like the front-end | tip (an example) of the clip which opens and closes elastically. According to this, since attachment can be performed simply by opening the clip and pinching the earlobe, the attachment work is facilitated.

(About pulse wave meter unit)
As shown in FIG. 2B, pulse wave unit 20 may include a light emitting diode (light emitting element) 21a and a photodiode (light receiving element) 21b in a part of a human body. These are arranged in a sensor casing made of a light shielding material. Light of a predetermined wavelength is irradiated to the skin from the light emitting diode. This light is reflected in the blood vessels of the skin, and the reflected light is received by a photodiode and extracted as an electrical signal (pulse wave signal). The wavelength of the light source may be about 950 nm as an example, and may be a pulse light source as a noise countermeasure.

  The pulse wave unit 20 is also connected to the apparatus main body 100 through a cable, for example.

  The measurement position may be a fingertip. Therefore, the housing (not shown) of pulse wave meter unit 20 may be configured to be openable and closable so that, for example, a fingertip can be pinched. There is a relationship that the light is absorbed by the arterial flow between the emitted light and the reflected light, and it is possible to obtain a pulsation waveform using this.

(About the control unit)
The control unit 50 includes a central processing unit (CPU) and hardware such as a memory, and is an arithmetic processing unit that performs various arithmetic processes. In this example, a storage unit 55 configured by, for example, a memory is provided. A computer program may be installed in this memory. The computer program may be downloaded in whole or in part from an external device when necessary via an arbitrary network. The computer program may be stored in a computer-readable recording medium. The “recording medium” is a memory card, USB memory, SD card (registered trademark), flexible disk, magneto-optical disk, ROM, EPROM, EEPROM, It includes any “portable physical medium” such as CD-ROM, MO, DVD, and Blu-ray (registered trademark) Disc.

The controller 50 may have the following functions:
-Create ECG waveform data based on the detection signal from the ECG unit,
-Create pulse waveform data based on the detection signal from the pulse wave unit,
-Accepts data input by the user via the input device 61 (for example, height numerical information, systolic blood pressure and diastolic blood pressure values, etc.);
-Based on the electrocardiogram waveform data and the pulse waveform data, a value (T ₂ -T ₁ ) relating to the pulse waveform is analyzed and obtained (where T ₁ is the time of appearance of the peripheral pulse wave, T ₂ is the peak time of the peripheral pulse wave),
-Using the height data (example: 170 cm) and the above value (T ₂ -T ₁ ), the pulse wave blood flow interlocking velocity V is obtained using the formula described later.

  In addition, the control unit 50 has a function of performing various calculations using various mathematical formulas described later.

2. Operation and Calculation Theory Next, an example of blood flow state estimation will be described. In the propagation of the waveform in FIG. 3, the start point of the pulse wave measurement timing is the peak point of the ECG R wave, which is the active period of the heart's ventricle. The end point is, for example, the index finger of the user's left hand. Thus, in the apparatus of the present embodiment, since the peak point of the R wave is a reference for time, the electrocardiograph unit 10 is used.

In FIG. 3, the position and time of the bottom point of the waveform where the pulse wave reaches the periphery (fingertip) is (X ₁ , T ₁ ), and the position and time of the peak point is (X ₁ , T ₂ ). is there.

The measurement timing is when the pulse wave arrives. The pulse wave generation point (X ₀ , T _{d: delay} ) is the moment when the aortic valve opens. The waveform of the pulse wave immediately after the pressure generation (the upper waveform in FIG. 3) is basically a symmetrical waveform because the influence of blood flow is small.

  On the other hand, it is known that the shape changes as shown in the lower waveform in FIG. Specifically, deformation occurs such that the top portion is inclined in the direction of the origin. The inventors of the present invention have found that the blood state can be estimated by paying attention to such waveform deformation, examining the degree of the deformation, and examining whether the influence of blood flow is large or small.

Referring to FIG. 3 again, the aortic valve opens at time (X ₀ , T _d ), and a pulse wave is generated (bottom point). Thereafter, the waveform reaches a peak point. In FIG. 3 (upper side), the peak point is indicated by (X ₀ , T _{p: peak} ).

After the peak point, the flow velocity decreases as the internal pressure decreases. The pulse wave travels through the blood vessel and the periphery (X ₁ = l: where l is 1/2 of reach (distance from the heart to the fingertip). Use the half value of the input height information. You may). As described above, the waveform has an asymmetric shape as it goes to the periphery, while the waveform at the bottom point (X ₁ , T ₁ ) is not affected by blood viscosity. Note that the time T _d from the R wave to the bottom at the point (X ₀ , T _d ) where the pulse wave is generated is a delay time specific to the individual. In addition, the time T _p from the R wave to the peak point is also the progression time unique to the individual.

In FIG. 3, the time T _c (referred to as “pulse wave propagation time”) when the bottom point of the pulse wave moves to the periphery. The pulse wave propagation time T _c can be expressed as follows.

On the other hand, the time between peak points, that is, the time T _u (referred to as “blood flow dependent pulse wave propagation time”) from (X ₀ , T _p ) to (X ₁ , T ₂ ) is as follows.

  The pulse wave velocity C and the blood flow dependent pulse wave velocity U are as follows. 3, C is the moving speed from the bottom point of the upper waveform to the bottom point of the lower waveform, and U is the moving speed from the peak point of the upper waveform to the peak point of the lower waveform. It is. C is not affected by blood flow, but U is affected by blood flow.

  If the pulse wave at the measurement point is not affected by the blood flow, the following is obtained, and the peripheral waveform is substantially symmetric.

When reducing the pulse wave propagation time T _c which is not affected by blood viscosity from flow-propagation time T _u, as follows. T _u -T _c is a negative value.

In the measurement of one individual within a short time, the values of T _d and T _p are values unique to the individual, and the coordinates X ₀ and X ₁ do not change. Times that can be measured among T _d , T _p , T ₁ , and T ₂ are T ₁ and T ₂ .

Differentiating f (X ₁ , T) with respect to time between T ₁ and T ₂ is as follows:

  This equation is referred to as a blood flow pulse wave slope (BPS: Blood Circulation Pulse Wave Slope).

Next, the change for each stroke of the time (T ₂ -T ₁ ) affected by the blood flow is examined. (T ₂ −T ₁ ) is set as follows: “Time difference linked to blood flow:“ Pulse wave Blood Circulation Interlocking Lag ”(PBIL: Pulse wave blood flow interlocking Lag).

The shorter the value of (T ₂ −T ₁ ), the stronger the pulse wave is affected by blood flow. A pulse wave blood flow interlocking speed (PBIS) is obtained from the above equation and the peripheral pulse wave arrival point 1 and T ₁ and T ₂ as follows.

3. Operation and Calculation Theory Pulse wave analysis can be performed by, for example, analysis of V affected by blood flow, analysis of C not affected by blood viscosity, simultaneous analysis of V and C, aging analysis, etc. is there.

(1) "Expected blood flow interlocking value" (PBIE: Pulse wave Blood Interlocking Exploration)
PBIS (V) obtained by measurement of one individual is affected by blood flow as described above. Normal value the average value _{V m} of V and (PBIE = 100). If the value of PBIE exceeds 100, the blood flow state means that the flow rate is faster than the average, and 100 or less means slower than the average. The blood flow interlocking expected value is expressed by the following formula.

(2) “Blood concentration center index ρ _i ” (BCI: Blood Concentration Central Index)
This is an index for confirming the influence of arterial pressure and PWV on the central value of blood concentration (see the formula below).

  It is known that the pulse wave velocity C is expressed by the following equation. Here, β is a stiffness parameter, P is a blood pressure, and ρ is a blood concentration. C is not affected by blood viscosity.

The blood concentration ρ is generally in the following numerical range. The blood concentration center value (initial value) ρ _c is set to 1.0605.

The value of the blood concentration center index when the arterial pressure P is the pulse wave velocity C is ρ _i, and the value when the average pulse wave velocity C _{m is} the average arterial pressure P _m is ρ _c . Then, the above equation is replaced as follows.

  β can be regarded as constant in the case of short-term measurement of one individual. The above equation is squared and the ratio is calculated as follows.

Here, the center value of [rho _c is by substituting this because it is 1.0605, the blood concentration center index [rho _i is determined as follows.

(3) Blood flow dependency index (BCR: Blood Circulation Ratio)
This BCR is represented by the ratio of the pulse wave blood flow interlocking speed PBIS (V) depending on the blood flow affected by the blood viscosity and the pulse wave speed C not affected by the blood viscosity. If PBIS is not affected by blood flow, it is constant. The larger the BCR, the greater the influence of blood flow.

(4) Aging change of pulse wave velocity and blood flow velocity When the hardness (β) of the blood vessel wall becomes hard due to the influence of aging or disease, the pulse wave velocity and the blood flow velocity are increased. It is also possible to confirm the state of the blood vessel wall from the average value of C and β.

(About correction with measured blood pressure)
By the way, when the measured values T ₁ and T ₂ are statistically processed, the pulse wave propagation time is always affected by the arterial pressure P, so that the time-dependent pulse wave propagation time is corrected and processed with the measured blood pressure. It is preferable in one embodiment.

For example, when T ₁ is corrected for time, if the measurement reference blood pressure is an arterial pressure average blood pressure P _m (specific example: P _m = (120 + 80) / 2 = 100), the following correction is performed. That is, T _AMD is as follows with the corrected blood flow propagation time.

  The correction time difference (BPCL: blood pressure correction lag) is as follows.

(Example of device operation)
Based on the above theory, an example of the operation of the apparatus of this embodiment will be described below.

  First, the user prepares the blood state display device of this embodiment and turns on the power. When a general-purpose computer is used, the blood state analysis software may be started after the power is turned on.

  In addition, the user inputs information such as height, sex, and blood pressure via the input device 61, and the control unit 50 receives the information. As the blood pressure information, for example, values of the maximum blood pressure and the minimum blood pressure measured with a commercially available blood pressure monitor may be input. The height information is used to obtain a numerical value corresponding to the distance from the heart to the periphery.

  The user attaches pulse wave meter unit 20 to a part (fingertip) of his / her body and presses the pair of conductive parts of electrocardiograph unit 10 with his / her finger.

  Thereby, the electrocardiogram data and the pulse wave waveform data are generated in real time by the electrocardiograph function and the pulse wave function of the control unit 50, and the waveform is displayed on the display device 30. Although not limited, a result display screen 31 as shown in FIG. 4 may be displayed, and these real-time waveforms may be dynamically displayed on a part of the waveform display unit 31a.

The control unit 50 obtains times T ₁ and T ₂ based on the electrocardiogram waveform data and the pulse wave waveform data thus obtained by various functions. Then, the pulse wave blood flow interlocking speed PBIS (V) of the user is calculated using the above-described calculation formula for obtaining PBIS (V).

The control unit 50, this speed was calculated (V) statistical processing to calculate the average value V _m, to calculate the blood flow in conjunction expectation PBIE using the above-described formula seek PBIE. Further, the control unit 50 calculates the blood concentration center index BCI using the above-described calculation formula for obtaining ρ _i . Specifically, the calculation of C _m and P _m may be appropriately performed as a statistical process, and is not limited to a specific specific calculation method. The control unit 50 also calculates the blood-dependent BCI using the above-described calculation formula for obtaining the BCR.

  The control unit 50 displays the result calculated in this way (for example, at least one of BCR, BPIE, and BCI) on the display device 30. In the result display screen 31 as shown in FIG. 4, for example, one or more of these values may be displayed on the blood state display unit 31b.

  As necessary, the control unit 50 transmits the calculated result information to the outside by the result output function. For example, information can be sent to other devices or networks via the communication unit 63 in a wired or wireless manner.

  According to the configuration of the present embodiment as described above, the parameter (related to the degree of waveform in the lower graph in the graph of FIG. 3) affected by the pulse wave is calculated, As a result display. Therefore, the user can check the influence of blood flow by looking at the value.

  In addition, since the electrocardiogram waveform is displayed on the result display screen, the user can check his / her own electrocardiogram waveform. At this time, it is preferable that the abnormal waveform example is also displayed as described above, because the normal / abnormal determination can be performed better.

  Although one embodiment of the present invention has been described above with specific examples, the present invention can be variously modified without departing from the gist thereof.

  For example, a plurality of numerical ranges are set for at least one numerical value of the calculated BCR, BPIE, and BCI (for example, a first range of numerical values a to b, a second range of numerical values c to d, etc. It is also possible to determine which range the calculated numerical value belongs to and display the range on the display.

(Appendix)
This application discloses the following inventions:
1. An electrocardiograph unit (10) for detecting electrocardiogram information of the human body;
A pulse wave meter unit (20) for detecting pulse wave information of a human body;
An input device (65);
A blood information display device (device, blood flow change detection device) comprising a control unit (50),
The control unit (50)
a1: a process of accepting input of at least height data (eg, 170 cm) of a human body;
a2: a process of creating electrocardiographic waveform data based on a signal from the electrocardiograph unit;
a3: processing for creating pulse waveform data based on a signal from the pulse wave unit;
And then
b1: Processing for obtaining a value (T ₂ −T ₁ ) related to the pulse waveform based on the electrocardiogram waveform data and the pulse waveform data (where T ₁ is the time of appearance of the peripheral pulse wave, and T ₂ Is the peak time of the peripheral pulse wave)
b2: Using the height data (eg, 170 cm) and the value (T ₂ -T ₁ ), a process for obtaining the pulse wave blood flow interlocking velocity V;
Do the equipment.

2. The apparatus as described above, further comprising a display (30).

3. The control unit (50)
c1: Processing for obtaining an average value Vm of the pulse wave blood flow interlocking velocity V of one individual;
c2: processing for obtaining a blood flow interlocking expected value: (V / Vm) × 100 [%] using the pulse wave blood flow interlocking velocity V and the average value Vm determined this time;
c3: processing for displaying the blood flow interlocking expected value on the display;
The apparatus as described above.

4). The control unit (50) further includes:
d1: a process for obtaining the pulse wave velocity C of one individual;
d2: processing for obtaining the average value Cm;
d3: a process for obtaining an average value Pm of blood pressure;
d4: a process for obtaining the blood concentration center index ρi by the following formula;

The apparatus as described above.

5). The control unit (50) further includes:
e1: The blood information display device as described above, which performs a process of obtaining a blood flow dependency index (BCR) by the following formula.

  In addition, you may display the various numerical values calculated | required above on a display suitably. In the above description, the present invention is expressed for an apparatus, but the present specification also discloses the same technical idea expressed as a category of a method or a program.

DESCRIPTION OF SYMBOLS 1 Blood state display apparatus 10 Electrocardiograph unit 20 Pulse wave meter unit 30 Display device 50 Control part (arithmetic processing part, control unit, control circuit)
55 Memory (memory)
61 Input device 62 Data reading unit 63 Communication unit 70 Auxiliary tool 71 Conductive pad unit 73 Ground member 73a Insertion unit 73b Main unit 75 Connector unit 100 Main unit

Claims (5)

An electrocardiograph unit for detecting electrocardiogram information of the human body;
A sphygmograph unit for detecting pulse wave information of the human body;
A blood information display device comprising a control unit,
The controller is
a1: a process of accepting input of data relating to at least the height or reach of the human body;
a2: a process of creating electrocardiographic waveform data based on a signal from the electrocardiograph unit;
a3: processing for creating pulse waveform data based on a signal from the pulse wave unit;
And then
b1: Processing for obtaining a value (T ₂ −T ₁ ) related to the pulse waveform based on the electrocardiogram waveform data and the pulse waveform data (where T ₁ is the time of appearance of the peripheral pulse wave, and T ₂ Is the peak time of the peripheral pulse wave)
b2: Processing for obtaining the pulse wave blood flow interlocking velocity V using the data relating to height or reach and the value (T ₂ -T ₁ );
A blood information display device. In addition, with a display,
The blood information display device according to claim 1, wherein the blood information display device is configured to display at least information of the pulse wave blood flow interlocking velocity V on the display. The controller is
c1: Processing for obtaining an average value Vm of the pulse wave blood flow interlocking velocity V of one individual;
c2: processing for obtaining a blood flow interlocking expected value: (V / Vm) × 100 [%] using the pulse wave blood flow interlocking velocity V and the average value Vm determined this time;
c3: processing for displaying the blood flow interlocking expected value on the display;
The blood information display device according to claim 2, wherein: The control unit further includes:
d1: a process for obtaining the pulse wave velocity C of one individual;
d2: processing for obtaining the average value Cm;
d3: a process for obtaining an average value Pm of blood pressure;
d4: a process for obtaining the blood concentration center index ρi by the following formula;
The blood information display device according to any one of claims 1 to 3, wherein: The control unit further includes:
e1: The blood information display apparatus as described in any one of Claims 1-4 which performs the process which calculates | requires a blood-flow dependence index (BCR) by the following formula.