JP3464052B2 - Blood pressure measurement device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blood pressure measuring device capable of displaying a blood pressure value obtained by measuring blood pressure a plurality of times and a pulse wave shape at the time of measuring the blood pressure according to the measurement order.

[0002]

2. Description of the Related Art A blood pressure measuring device is known in which a blood pressure value is stored for each blood pressure measurement, and the stored blood pressure value is displayed in a graph according to the measurement order. For example, this is the automatic blood pressure measurement device described in Japanese Patent Laid-Open No. 5-137698. According to such an automatic blood pressure measuring device,
Since the transition of the measured blood pressure value can be easily grasped, there is an advantage that the health condition of the living body can be accurately judged.

By the way, since mild attacks such as chest pain are transient, it is often impossible to recognize that serious heart disease may be inherent. Further, even if it is recognized and the doctor's diagnosis is once received, at that time there is no subjective symptom and there is a possibility that the diagnosis is made based on the test data of the blood pressure measurement because the patient is in a healthy body at first glance.

[0004]

However, even if blood pressure is measured in the above-mentioned conventional automatic blood pressure measuring device for a living body as described above, only the measured blood pressure value or its transition is obtained, and that much. However, even if the possibility of hypertension can be determined, the possibility of heart disease cannot be self-determined or diagnosed at all, and there is a risk that the living body will continue to have a normal life and become seriously ill.

The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce a change in the pulse wave shape that enables determination of heart disease during blood pressure measurement, which is relatively easy to measure. It is to provide a blood pressure measurement device that can be easily grasped.

[0006]

The gist of the present invention for achieving the above object is to provide a blood pressure measuring means for measuring a blood pressure value of a living body, and a blood pressure value measured by the blood pressure measuring means are sequentially stored. A blood pressure measuring device for outputting blood pressure values sequentially stored in the blood pressure value storing means, wherein (a) the blood pressure value of the living body is measured by the blood pressure measuring means, Pulse wave detecting means for detecting a pulse wave generated from the artery of the living body in synchronization with the heartbeat;
The pulse wave shape storage means for sequentially storing the waveform of the pulse wave detected by the pulse wave detection means for each blood pressure measurement by the blood pressure measurement means, and (c) the blood pressure value stored by the blood pressure value storage means Display means for displaying in accordance with the measurement order, and for displaying in parallel the curves representing the waveforms of the pulse waves sequentially stored by the pulse wave shape storage means according to the storage order, and (d) displayed by the display means. Pulse wave
In order to equalize the wavelengths of the
The pulse wave stored in memory is processed so that its wavelengths are the same.
And a wavelength processing means for performing processing .

[0007]

In this way, the pulse wave generated from the artery of the living body in synchronization with the heartbeat in the process of measuring the blood pressure value of the living body is detected by the pulse wave detecting means, and is detected by the pulse wave detecting means. When the waveform of the pulse wave (that is, the shape of the pulse wave) is sequentially stored by the pulse wave shape storage means for each blood pressure measurement by the blood pressure measurement means, the blood pressure value stored by the blood pressure value storage means is measured by the display means. The curves are displayed according to the order, and the curves representing the shapes of the pulse waves sequentially stored by the pulse wave shape storage means are displayed in parallel according to the storage order. At this time, the pulse wave
By performing signal processing so that the wavelengths are the same,
Therefore, the displayed pulse wave wavelengths are made uniform.

[0008]

Therefore, according to the blood pressure measuring device of the present invention, the pulse wave shapes are displayed in a parallel arrangement by the blood pressure measuring operation which is relatively easy to measure , and
By making the displayed pulse wave wavelengths equal
Since it is easy to compare the pulse wave shapes, it is possible to easily grasp the transition of the change of the pulse waveform shape together with the transition of the blood pressure value, and it is possible to judge the heart disease.

Here, preferably, the pulse wave detecting means is
The blood pressure measuring means detects, as a pulse wave, a pressure vibration generated in a cuff wrapped around a living body in synchronization with a heartbeat in order to measure a blood pressure value. By doing so, it is not necessary to separately provide a pulse wave sensor for detecting the shape of the pulse wave, so that there is an advantage that the structure of the device is simple and can be constructed at low cost.

Further, (e) in order to make the amplitudes of the pulse waves displayed by the display means uniform, the pulse waves stored by the pulse wave shape storage means have the same amplitude. Further included is an amplitude processing means for performing signal processing. In this way, the comparison of the pulse wave shape becomes easier, there is an advantage that can easily grasp the changes in the pulse shape.

[0011]

[0012]

Preferably, (f) a waveform characteristic value calculating means for calculating the waveform characteristic value of the pulse wave sequentially stored by the pulse wave shape storing means, and (g) a waveform characteristic value of the pulse wave. Waveform characteristic value storage means for sequentially storing is further provided, and the display means is configured to display the waveform characteristic values of the pulse waves sequentially stored by the waveform characteristic value storage means according to the detection order of the pulse waves. To be done. By doing so, there is an advantage that the change in the waveform is quantitatively grasped and the change in the pulse wave shape is more easily grasped.

Preferably, the display means displays the blood pressure values stored by the blood pressure value storage means and the waveform characteristic values of the pulse wave stored by the waveform characteristic value storage means on a common time axis. Along with the graph, the curve representing the shape of the pulse wave stored by the pulse wave shape storage means is displayed in parallel along the common time axis. In this way, the blood pressure value and the waveform characteristic value of the pulse wave are displayed along with the pulse wave shape along the common time axis, so that it becomes easier to understand the change in the pulse wave shape.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing an automatic blood pressure measuring device 8 according to an embodiment of the present invention. In the figure, a box body 10 is provided with a through hole 14 for inserting an arm 12 of a person to be measured, and a cuff 16 made of a bag-shaped flexible cloth and a rubber bag is provided in the through hole 14. A belt 18 having a cylindrical shape and having an inner peripheral surface is provided. The operation panel 20 of the box 10 is provided with a start switch 22, a stop switch 24, a printer 26, a card insertion port 28, etc., and a display panel 30 has a systolic blood pressure indicator 32, a diastolic blood pressure indicator 34, and a pulse. A number display 36 and a time display 38 are provided respectively.

FIG. 2 is a block diagram illustrating a circuit configuration of the automatic blood pressure measuring device 8. In the figure, cuff 1
6 is connected to the pressure sensor 42, the exhaust control valve 44, and the air pump 46 via a pipe 48, and one end of a belt 18 having a cuff 16 on its inner peripheral surface and wound in a cylindrical shape is fixed. The other end is tightened by a drum 52 driven by a DC motor 50 with a speed reducer. The output signal of the pressure sensor 42 is discriminated by the bandpass filter 54, and the pulse wave signal SM which is the pressure vibration of the cuff generated in synchronization with the pulse is A of the arithmetic control circuit 56.
It is supplied to the / D converter 58. The output signal of the pressure sensor 42 is discriminated by the low-pass filter 60, and the cuff pressure signal SK representing the static pressure of the cuff 16 is supplied to the A / D converter 58 of the arithmetic control circuit 56.

The arithmetic control circuit 56 includes a CPU 62, R
OM64, RAM66, input interface circuit 6
8, a microcomputer including an output interface circuit 70 and the like. The CPU 62 processes the input signal according to the procedure stored in the ROM 64 in advance while using the temporary storage function of the RAM 66, and outputs the drive signal, the display signal, and the like. That is, when measuring the blood pressure, the CPU 6
2 drives the DC motor 50 with a speed reducer in accordance with a predetermined procedure to wind the cuff 16 around the upper arm of the living body, and drives the air pump 46 to drive the cuff 1.
6, the upper arm portion is pressed, then the exhaust control valve 44 is driven to gradually reduce the compression pressure of the cuff 16, and the oscillometric method is performed based on the pulse wave signal SM and the cuff pressure signal SK obtained in the gradual pressure reduction process. The blood pressure value is determined by the method, and the blood pressure value is displayed on the display devices 32 and 34, and at the same time, is sequentially stored in the blood pressure value storage area 87 of the storage device 86. Further, the CPU 62 sequentially stores the shape of the pulse wave at a predetermined pressure, for example, an average blood pressure value or a constant pressure lower than that, in the pulse wave shape storage area 88 for each blood pressure measurement. Further, the CPU 62 calculates the waveform characteristic value of the shape of the pulse wave and sequentially stores it in the waveform characteristic value storage area 89. The storage device 86 is composed of a well-known storage device such as a magnetic disk, a magnetic tape, a volatile semiconductor memory, or a non-volatile semiconductor memory.

Further, the CPU 62 causes the printer 26 to print and display the trend graph of the blood pressure value and the waveform characteristic value sequentially stored in the blood pressure value storage area 87 and the waveform characteristic value storage area 89 for each blood pressure measurement. The pulse wave shapes sequentially stored in the pulse wave shape storage area 88 for each blood pressure measurement are printed in parallel on the printer 26 along the time axis common to the trend graph and displayed.

FIG. 3 is a functional block diagram for explaining the control function of the arithmetic control circuit 56. In the figure, the blood pressure values measured by the blood pressure measurement means 90 are sequentially stored by the blood pressure value storage means 92. The pulse wave detecting means 94 detects the pulse wave generated in synchronization with the heartbeat from the artery of the living body in the process of measuring the blood pressure value by the blood pressure measuring means 90. The pulse wave shape storage means 96 sequentially stores the pulse wave shape detected by the pulse wave detection means 94 for each blood pressure measurement by the blood pressure measurement means 90. The display means 98 is the blood pressure value storage means 9 described above.
The blood pressure values stored in step 2 are displayed according to the measurement order, and the curves representing the pulse wave shapes sequentially stored by the pulse wave shape storage means 96 are displayed in parallel according to the storage order. In this way, by the blood pressure measurement operation that is relatively easy to measure, the pulse wave shape is displayed in a state of being arranged in parallel, so that the change of the pulse wave shape can be easily changed along with the change of the blood pressure value. Since it can be grasped, it becomes possible to judge the heart disease.

In order to make the amplitudes of the pulse wave shapes displayed by the display means 98 uniform, the pulse waves stored in the pulse wave shape storage means 96 are subjected to signal processing so that the amplitudes are the same. Amplitude processing means 100 is provided. This makes it easy to compare the pulse wave shapes and easily grasp the change in the pulse wave shapes.

Further, in order to make the wavelengths of the pulse waves displayed by the display means 98 uniform, the pulse wave shape storage means 96
Further provided is a wavelength processing means 102 for performing signal processing so that the pulse waves stored by the above-mentioned method have the same wavelength. This makes it easier to compare pulse wave shapes,
There is an advantage that changes in the pulse wave shape can be easily grasped.

Further, a waveform characteristic value calculating means 104 for calculating the waveform characteristic value of the pulse wave sequentially stored by the pulse wave shape storing means 96, and a waveform characteristic value storage means 106 for sequentially storing the waveform characteristic value of the pulse wave. And are further provided. The display means 98 displays the waveform characteristic values of the pulse wave sequentially stored by the waveform characteristic value storage means 106 according to the detection order of the pulse wave. Thereby, the change in the waveform is quantitatively grasped, and the change in the pulse wave shape is more easily grasped.

Further, the display means 98 displays the blood pressure value sequentially stored by the blood pressure value storage means 92 and the waveform characteristic value of the pulse wave sequentially stored by the waveform characteristic value storage means 106 along a common time axis. Along with the graph display, the curve representing the shape of the pulse wave stored by the pulse wave shape storage unit 96 is displayed in parallel along the common time axis. Thereby, the blood pressure value and the waveform characteristic value of the pulse wave are displayed along with the pulse wave shape along the common time axis, so that the change in the pulse wave shape can be more easily grasped.

The main part of the operation of the arithmetic control circuit 56 will be described below with reference to the flow chart shown in FIG.

In step S1 of FIG. 4, it is determined whether the magnetic card 76 has been inserted into the magnetic card insertion slot 28 of the card reading device 74. If the determination in step S1 is negative, this routine is ended, but if the determination is affirmative, the ID signal recorded in the magnetic card 76 in step S2 is read.

In the following step S3, the read ID
It is determined whether or not the signal is one registered in advance in the storage area of the storage device 86. If the determination in step S4 is negative, step S12, which will be described later, is executed and the printer 26 outputs the display on the recording paper 110, but the ID signal recorded on the magnetic card 76 is not registered. If it is, the display content indicates that it is not registered.

If the determination in step S3 is affirmative, that is, if the ID signal recorded in the magnetic card 76 has been registered, it is determined in step S4 whether the activation switch 22 for measuring blood pressure has been operated. Judged,
If this judgment is denied, it is kept waiting until it is affirmed. When the determination in step S4 is affirmed, the blood pressure measurement routine of step S5 corresponding to the blood pressure measurement means 90 is executed, and the maximum blood pressure value, the minimum blood pressure value, the average blood pressure value,
Pulse rate etc. are measured. In this blood pressure measurement routine,
The cuff 16 is automatically raised in pressure according to a predetermined procedure, and in the step of lowering the pressure of the cuff 16, the blood pressure value is determined according to the well-known oscillometric method. That is, the systolic blood pressure value SAP and the diastolic blood pressure value DAP are determined based on the change in the magnitude of the collected pulse wave, and the cuff pressure at the maximum amplitude of the pulse wave is determined as the average blood pressure value MAP. The pulse rate is calculated based on the pulse wave generation interval used to determine the blood pressure value.

Then, in step S6, the measured maximum blood pressure value SAP, minimum blood pressure value DAP, and average blood pressure value MA are measured.
P, pulse rate, and measurement date and time are stored for each subject in the blood pressure value storage area 87 that functions as the blood pressure value storage means 92, and the systolic blood pressure indicator 32, the diastolic blood pressure indicator 34, and the pulse rate indicator. 36 respectively.

Next, in step S7, among the pulse waves collected for blood pressure measurement in step S5,
The shape of the pulse wave generated when the pressure of the cuff 16 is within a preset pressure value or pressure range is the pulse wave shape storage means 96.
It is stored together with the measurement date for each subject in the pulse wave shape storage area 88 that functions as. The preset pressure is selected to be a value near or below the average blood pressure value, more preferably, a lower pressure of the pressures between the minimum blood pressure value and the average blood pressure value. For example, the shape of the pulse wave generated at the pressure closest to the minimum blood pressure value among the pulse waves generated between the minimum blood pressure value and the average blood pressure value is stored. The pulse wave is output from the band pass filter 54, and in the present embodiment, the band pass filter 54 functions as the pulse wave detecting means 94.

Then, step S8 corresponding to the waveform characteristic value calculating means 104 is executed to calculate the waveform characteristic value of the pulse wave shape stored in the pulse wave shape storage area 88. The waveform characteristic value is, for example, a slope value SLOP related to the slope of the rising portion of the pulse wave.
E,% MAP value related to the slope of the trailing edge of the pulse wave. The slope value SLOPE is defined as the maximum value (dP / dt) _max of the differential value of the rising portion of the pulse wave, and the shape of the pulse wave stored in the pulse wave shape storage area 88 for each measurement subject. Calculated from the data.
Further, as shown in FIG. 5, the% MAP value is the height a (= the average blood pressure value MAP (the center of gravity of the pulse wave area)) with respect to the amplitude value b in the pulse wave shape, that is, the pulse pressure (= SAP-DAP). MAP-DAP) ratio (= 100 × a / b). The slope value SLOPE is proportional to the strength of the myocardium and is a value related to cardiac output. The% MAP value is a value related to the relaxation state of blood vessels, that is, peripheral vascular resistance.

In the following step S9, the above step S8
Waveform characteristic value calculated in step S1, ie, slope value S
The LOPE and the% MAP value are stored together with the measurement date for each subject in the waveform feature value storage area 89 functioning as the waveform feature value storage means 106. Then, in step S10 corresponding to the amplitude processing means 100,
The shape of the pulse wave stored in the pulse wave shape storage area 88 is modified so that its amplitude has a preset value. This is because the pulse wave amplitude is greatly affected by the blood pressure value at the time of measurement, so that the parallel display can be facilitated and the change in the pulse wave shape can be easily grasped. Further, in step S11 corresponding to the wavelength processing means 102, the pulse wave shape subjected to the amplitude processing is corrected so that its wavelength becomes a preset value. This is because the wavelength of the pulse wave is greatly affected by the pulse rate at the time of measurement, so that the parallel display can be facilitated and the change in the pulse wave shape can be easily grasped.

Then, in step S12 corresponding to the display means 98, the output is displayed on the recording paper 110 by the printer 26 as shown in FIG. 6, for example. That is, the name 1 of the person to be measured is located at the upper left position on the recording paper 110.
12 is displayed, and the measurement date and time are displayed below it.
A list 114 of blood pressure values and pulse rates, a trend graph 116, and a pulse wave train 118 are sequentially displayed. In this trend graph 116, a bar line indicating the systolic blood pressure value and the diastolic blood pressure value at the upper and lower ends, and a Δ mark and a% indicating the pulse rate are shown.
A  mark indicating the MAP value and a ◯ mark indicating the SLOPE value are displayed along the horizontal axis, that is, the time axis 120 in correspondence with the blood pressure measurement time point. Further, in the pulse wave train 118, the pulse wave shapes 122 sequentially stored at each blood pressure measurement are displayed in parallel along the time axis 120 and the time axis 124 parallel thereto.

As described above, according to this embodiment, the pulse wave generated from the artery of the living body in synchronization with the heartbeat in the process of measuring the blood pressure value of the living body is detected by the bandpass filter 54, and the band When the pulse wave shape detected by the pass filter 54 is sequentially stored in the pulse wave shape storage area 88 for each blood pressure measurement in step S5, step S12 is performed.
Thus, the blood pressure value stored in the blood pressure value storage area 87 is displayed according to the measurement order, and the curve 122 representing the pulse wave shape sequentially stored in the pulse wave shape storage area 88 is arranged in parallel according to the storage order. Displayed respectively. Therefore, according to the apparatus of the present embodiment, by the blood pressure measurement operation which is relatively easy to measure, since the pulse wave shapes are displayed in a state of being arranged in parallel, the change in the pulse wave shape changes. Since it is possible to easily grasp the change in blood pressure value, it becomes possible to judge the heart disease.

Further, according to the present embodiment, the bandpass filter 54 functioning as the pulse wave detecting means 94 causes the pulse wave to generate the pressure vibration generated in the cuff 16 in synchronization with the heartbeat of the living body for blood pressure measurement. Since it is not necessary to separately provide a pulse wave sensor for detecting the shape of the pulse wave, there is an advantage that the structure of the device is simple and can be constructed at low cost.

Further, according to the present embodiment, in order to equalize the amplitudes of the pulse wave shape 122 displayed by the display means 98, the pulse wave stored in the pulse wave shape storage area 88 is changed in step S10. The signals are processed so that the amplitudes are the same. This makes it easy to compare pulse wave shapes,
Changes in pulse wave shape can be easily grasped.

According to this embodiment, the display means 9 is also provided.
In order to make the wavelengths of the pulse waves 122 displayed by 8 uniform, the pulse waves stored in the pulse wave shape storage area 88 are subjected to signal processing in step S11 so that the wavelengths become the same. This makes it easier to compare the pulse wave shapes, and has an advantage that changes in the pulse wave shapes can be easily grasped.

Further, according to this embodiment, the pulse wave waveform characteristic values sequentially stored in the pulse wave shape storage area 88 are calculated in step S8, and the waveform characteristic values of the pulse wave are stored in the waveform characteristic value storage area 89. The waveform characteristic values of the pulse wave, which are respectively stored in the waveform characteristic value storage area 89, are displayed in step S12 according to the calculation order of the waveform characteristic values of the pulse wave, that is, the detection order of the pulse waves. Thereby, the change in the waveform is quantitatively grasped, and the change in the pulse wave shape is more easily grasped.

Further, according to the present embodiment, step S12
At, the blood pressure value sequentially stored in the blood pressure value storage area 87 and the waveform characteristic value of the pulse wave sequentially stored in the waveform characteristic value storage area 89 are displayed as a graph along the common time axis 120 or 124. Pulse wave shape memory area 8
Since the curve 122 representing the shape of the pulse wave stored in 8 is displayed in parallel along the common time axis 120,
It becomes easier to understand the change in pulse wave shape.

FIG. 7 shows another display example in step S12. This display example is used when the width of the recording paper used in the printer 26 is large or when the printer 2 is used.
It is preferably used when a CRT display is provided instead of 6 or in parallel with the printer 26. In FIG. 7, the name 112 of the measurement subject is displayed at the upper left position of the display area, and the measurement date / time, the blood pressure value, and the pulse rate list 114 are displayed on the lower side thereof, and the right side of the list 114. A trend graph 116 and a pulse wave train 118 are sequentially displayed on the screen. Also in this trend graph 116, a bar line showing the systolic blood pressure value and the diastolic blood pressure value at the right end and the left end, a ▽ mark indicating the pulse rate, a ● mark indicating the% MAP value, and a SLOPE.
A circle mark indicating a value is displayed along the vertical axis, that is, the time axis 120, corresponding to the time of blood pressure measurement. In the pulse wave train 118, the pulse wave shapes 122 sequentially stored at each blood pressure measurement are displayed in parallel along the time axis 120. The time axis 120 may substantially exist even if it is not displayed.

FIG. 8 shows still another display example in step S12. In the figure, the name 112 of the measurement subject is displayed at the upper left position of the display area, and below the measurement name, the blood pressure value, and the pulse rate list 11 are displayed.
4 is displayed, and a trend graph 116, a pulse wave train 118, and a drug name 126 are sequentially displayed on the right side of the list 114. Also in this trend graph 116, a bar line indicating the systolic blood pressure value and the diastolic blood pressure value at the right end and the left end, and a circle mark indicating the pulse rate are displayed along the vertical axis, that is, the time axis 120 corresponding to the blood pressure measurement time point. There is. Further, in the pulse wave train 118, the pulse wave shapes 122 sequentially stored at each blood pressure measurement are displayed in parallel along the time axis 120 in a grid frame 128 including a time axis 124. . In addition, as the drug name 126, drug names such as antihypertensive drugs that are administered at each blood pressure measurement are displayed in parallel along the time axis 120. The medication name 126 is obtained, for example, by operating a keyboard (not shown) connected to the automatic blood pressure measurement device 8 or transmitting a signal from a host computer that manages medical information.
4 is input to the arithmetic and control circuit 56 prior to the activation operation.

According to the above display example, the trend graph 11
6 and the pulse wave train 118 are displayed together with the drug name 126, it is possible to know the effect of the drug in time series when treating a heart disease. The grid-shaped frame 128 on which the pulse wave train 118 is displayed is for making the change of the pulse wave easier to see, but it does not matter if it is not particularly displayed. Further, the number indicating the pulse in the list 114 is made smaller than the number indicating the blood pressure value, so that misreading with the blood pressure value is less likely to occur, but it is displayed in the same size as the number indicating the blood pressure value. It doesn't matter.

Although one embodiment of the present invention has been described above with reference to the drawings, the present invention can be applied to other aspects.

For example, in the above-described embodiment, some or all of steps S8 to S11 need not necessarily be provided.

Further, in the above-mentioned embodiment, step S
10 to S11 may be configured to be executed before step S7. In such a case, the shape of the pulse wave subjected to the amplitude processing and the wavelength processing is the pulse wave shape storage area 8
8 will be stored.

Further, in the above-mentioned embodiment, step S
In 5, the blood pressure value is determined according to the so-called oscillometric method, but the blood pressure value may be determined according to the Korotkoff sound method. In such a case, a microphone is provided to detect Korotkoff sounds.

Further, the automatic blood pressure measuring device 8 of the above-mentioned embodiment
Is configured to start the blood pressure measurement on condition that the magnetic card 76 is inserted, the blood pressure value of the patient is predetermined when the cuff 16 is wrapped around the patient. It may be a blood pressure measuring device of a type in which measurement is continuously repeated at a cycle of about 5 to 30 minutes. In such a case, the blood pressure value and the waveform shape 122 are displayed for each measurement cycle along the time axis 120.

The above description is merely one embodiment of the present invention, and the present invention can be variously modified without departing from the gist thereof.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a blood pressure measurement device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a circuit configuration of the embodiment of FIG.

FIG. 3 is a functional block diagram illustrating a control function of the arithmetic control circuit of FIG.

FIG. 4 is a flowchart illustrating a control operation of the arithmetic control circuit of FIG.

5 is a diagram illustrating% MAP, which is a shape characteristic value of a pulse wave obtained in the flowchart of FIG.

FIG. 6 is a diagram illustrating an example of display output according to the control operation of FIG.

FIG. 7 is a diagram illustrating an example of display output according to another embodiment of the present invention.

FIG. 8 is a diagram illustrating an example of display output according to still another embodiment of the present invention.

[Explanation of symbols]

8: Automatic blood pressure measurement device 16: Cuff 90: Blood pressure measuring means 92: Blood pressure value storage means 94: Pulse wave detecting means 96: Pulse wave shape storage means 98: Display means 100: Amplitude processing means 102: Wavelength processing means 104: Waveform feature value calculation means 106: Waveform feature value storage means

Claims (5)

(57) [Claims] 1. A blood pressure measuring means for measuring a blood pressure value of a living body, and a blood pressure value storage means for successively storing blood pressure values measured by the blood pressure measuring means, wherein the blood pressure sequentially stored in the blood pressure value storage means. A blood pressure measuring device for outputting a value, in the process of measuring a blood pressure value of a living body by the blood pressure measuring means, a pulse wave detecting means for detecting a pulse wave generated in synchronization with a heartbeat from an artery of the living body, The waveform of the pulse wave detected by the pulse wave detection means, a pulse wave shape storage means for sequentially storing each blood pressure measurement by the blood pressure measurement means, and the blood pressure value stored by the blood pressure value storage means according to the measurement order. While displaying, display means for displaying in parallel each curve representing the waveform of the pulse wave sequentially stored by the pulse wave shape storage means according to the storage order, and the wavelength of the pulse wave displayed by the display means. Equal
In order to store the pulse wave stored by the pulse wave shape storage means,
Wavelength processor that performs signal processing so that the wavelengths are the same
A blood pressure measuring device comprising: a step . 2. The pulse wave detecting means detects, as a pulse wave, a pressure vibration generated in synchronization with a heartbeat in a cuff wrapped around a living body for the blood pressure measuring means to measure a blood pressure value. The blood pressure measurement device according to claim 1. 3. An amplitude process for performing signal processing so that the pulse waves stored by the pulse wave shape storage means have the same amplitude in order to equalize the amplitudes of the pulse waves displayed by the display means. The blood pressure measurement device according to claim 1, further comprising means. 4. A waveform characteristic value calculation means for calculating waveform characteristic values of the pulse wave sequentially stored by the pulse wave shape storage means, and a waveform characteristic value storage means for sequentially storing the waveform characteristic values of the pulse wave. 2. The blood pressure measurement device according to claim 1, further comprising: the display unit that displays the waveform characteristic values of the pulse wave sequentially stored by the waveform characteristic value storage unit according to the detection order of the pulse wave. 5. The display means graphs blood pressure values stored by the blood pressure value storage means and waveform characteristic values of pulse waves stored by the waveform characteristic value storage means along a common time axis. The blood pressure measuring device according to claim 4 , wherein the blood pressure measurement device displays the curves representing the waveform of the pulse wave stored by the pulse wave shape storage means in parallel along the common time axis.