JPH0564054B2 - - Google Patents

Description

BACKGROUND OF THE INVENTION A. Technical Field The present invention relates to a blood pressure measuring device capable of displaying and printing a trend graph that records blood pressure values over a predetermined period of time.

B. Prior art and its problems Blood pressure measurement devices are known that measure blood pressure values together with pulse rate and temperature at the time of measurement and display or print them.

However, when an individual measures blood pressure for health management, etc., the blood pressure value measured at that time,
By simply displaying or printing the pulse rate, it is not possible to know whether the measurement result is higher or lower than the subject's daily blood pressure value, or to what degree.

Therefore, if you create a so-called trend graph that represents past measurement data in a graph, you can find out approximate daily values from past data.
You can compare and examine the current measurement values with daily values, and learn about changes in blood pressure values. However, it is not possible to determine the average value even by looking at a graph of past measurement results.

Therefore, it is conceivable to calculate the average value in advance as the subject's daily value and display or print it together with the trend graph or the current measurement results. This allows you to compare the average value with the measured value at that time and determine whether it is higher or lower than usual.

However, when calculating the average value, there is a problem in selecting the measurement value on which it is based. For example, the average value of measured values continuously measured over a short period of time has no meaning as a daily value. Further, when continuous measurements are made in such a short period of time, there are many cases where measurements are erroneous due to the influence of noise, and further measurements are taken again, and data other than the last data are often erroneous data. In the case of such erroneous measurements, it is cumbersome for the operator to remove the erroneously measured data by operating an external switch or the like, and the operator often forgets to do so.

Furthermore, since very old measurement data no longer represents the daily values of the person being measured, it is inappropriate to use it as the basis for an average value.

As described above, it was difficult to display or print out the current measured values in a way that would allow them to be compared and considered with past measured data and daily values.

Purpose of the invention The present invention overcomes the drawbacks of the prior art,
A blood pressure measuring device that measures blood pressure along with pulse rate and displays or prints the measured values, as well as displaying or printing past measurement data and their average values that are appropriate to represent the subject's daily values. The purpose is to provide

According to the present invention, in a blood pressure measuring device having a measuring means for measuring at least a systolic blood pressure value and a diastolic blood pressure value, and an output means for outputting a measured value measured by the measuring means, a measured value measured by the measuring means is provided. A storage means for storing data, a data processing means for processing the measurement value data stored in the storage means to create predetermined data, and the measurement value data stored in the storage means and data processed by the data processing means. The present invention is characterized in that it has a selection means for selecting data to be output from the output means, and outputs a display including a graph from the output means based on the data selected by the selection means.

According to one feature of the invention, the data processing means is capable of calculating an average value from the measured value data.

According to another feature of the present invention, the storage means includes a measured value data storage section that stores measured value data, and a processed data storage section that stores data obtained by processing the measured value data by the data processing means. The value data storage section includes a plurality of cells, each of which includes a systolic blood pressure storage area for storing systolic blood pressure and a diastolic blood pressure storage area for storing diastolic blood pressure, and the processing data storage section stores measured value data. a data set register indicating the number of cells being
A systolic blood pressure total register that stores the total value of systolic blood pressure values stored in the systolic blood pressure storage area, a diastolic blood pressure total register that stores the total value of diastolic blood pressure values stored in the diastolic blood pressure storage area, and a systolic blood pressure storage area. The average systolic blood pressure register stores the average value of the systolic blood pressure values stored in the diastolic blood pressure storage area, and the average diastolic blood pressure register stores the average value of the diastolic blood pressure values stored in the diastolic blood pressure storage area.

According to another feature of the invention, the blood pressure measuring device comprises:
Furthermore, it is possible to have data changing means for changing the measured value data stored in the storage means.

According to another feature of the present invention, the data changing means compares the measurement time of the previous measurement value data stored in the storage means and the measurement time of the current measurement value data measured by the measurement means. It has a comparison means, and when the current measurement time is within a predetermined time from the previous measurement time, the previous measurement value data can be deleted.

According to another feature of the present invention, the data changing means has a comparison means for comparing the measurement time of the oldest measured value data stored in the storage means with the current time, and Old measurement data that is older than a predetermined number of days can be deleted.

According to another feature of the present invention, the selection means can select the average value of the current measurement value data measured by the measurement means and the measurement value data calculated by the data processing means.

According to another feature of the present invention, the selection means can select the average value of the plurality of measurement value data measured by the measurement means and the plurality of measurement value data calculated by the data processing means.

According to another feature of the invention, the blood pressure measuring device comprises:
Furthermore, it is possible to have a switching means for the operator to select and switch whether or not to store the measured value data measured by the measuring means in the storage means.

According to another feature of the present invention, the measuring means can measure not only the systolic blood pressure value and the diastolic blood pressure value, but also the pulse rate, the temperature, and the date and time of measurement.

According to other features of the invention, the output means can be a display device and a printer.

DETAILED DESCRIPTION AND OPERATIONS OF THE INVENTION Next, embodiments of the blood pressure measuring device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a hardware configuration diagram of a blood pressure measuring device according to the present invention.

Microphone 2 detects sounds or vibrations from blood vessels and converts them into electrical signals in order to detect Korotkoff sounds. Korotkoff sounds are generated from arterial blood vessels that are pressurized by the arm body 8 and gradually depressurized, and the point where the sound occurs first is the systolic blood pressure, and the point where it occurs last is the diastolic blood pressure. Korotkov sound is
It is identified from the signal output from the microphone 2.

The filter amplifier 3 shapes and amplifies the signal from the microphone 2 and outputs it to the AD converter 4.

The pressure detection unit 5 detects the pressure applied to the blood vessel via the cuff 8 by the pressurizing means, and converts it into an electrical signal. The amplifier 6 amplifies the signal from the pressure detection section 5 and outputs it to the AD conversion section 4.

The AD converter 4 converts analog signals input from the filter amplifier 3 and the amplifier 6 into digital signals, and outputs the digital signals to the CPU 7.

The reference power supply section 13 generates a voltage that is used as a reference when the AD conversion section 4 converts the signals input from the filter amplifier 3 and the amplifier 6 into digital signals of, for example, 256 levels.

The pressurization setting switch 12 is set by the operator to a predetermined value, for example, 120 mmHg, 150 mmHg, 180 mm, based on the subject's daily systolic blood pressure value, so that the maximum pressure applied to the blood vessels by the cuff 8 does not become larger than necessary.
This is for setting Hg, 210mmHg.

The CPU 7 measures the blood pressure based on the sound or vibration signal from the blood vessel and the pressure signal applied to the blood vessel input from the AD converter 4 . Measured value storage section 7 for temporarily storing measured values in CPU 7
1 is provided.

The clock generator 17 generates a clock signal for controlling the operation timing of the CPU 7.
Output to CPU7.

The drive unit 14 drives the pressure pump 10 and the exhaust valve 11 according to instructions from the CPU 7. The pressurizing pump 10 sends out pressurized air to pressurize the blood vessels using the cuff 8. The exhaust valve 11 exhausts the pressurized air that has been pressurized by the pressurizing pump 10 and is being sent from the pressurizing pump 10 to the cuff 8 during measurement. The pressure reduction valve 9 is for gradually exhausting and reducing the pressure of the pressurized air sent from the pressure pump 10 to the cuff 8.

The display unit 16 displays the measured values determined by the CPU 7 and data obtained by processing the stored measured values, and also issues a buzzer to warn of the end of the measurement and the status of the device. The display unit 16 further displays whether the mode of the blood pressure measuring device is automatic memory mode or not. The automatic storage mode is a mode in which the measurement results are automatically stored in the memory 18 after the measurement is completed, and the average value is calculated.

The printer 15 prints the measured values and data obtained by processing the stored measured values.

The memory 18 stores control procedures and processing progress of the CPU 7, and measurement results such as measured blood pressure values.

The timer 19 measures the time when blood pressure values and the like are measured.

The pressure switch 20 and the exhaust switch 22 are
These are switches for driving the pressure pump 10 and exhaust valve 11, respectively. The measurement value print switch 23 instructs the printer 15 to print the measurement results stored in the measurement value storage section 71 of the CPU 7. The graph printing switch 21 prints the measured values stored in the measured value storage section 71 of the CPU 7.
5 to print the graph.

The mode changeover switch 24 is connected to the display section 1 mentioned above.
Switch the storage processing mode displayed in 6.

As shown in FIG. 2, the memory 18 includes a measured value data storage section 30 that stores measured data, and a processed data storage section 50 that stores data obtained by processing the measured data. The measured value data storage unit 30 is
Consisting of a total of M cells, each cell has a pointer P indicating the cell position where the next measurement data should be stored.
31. Time storage area T32 for storing measurement time;
It consists of a systolic blood pressure storage area S33 that stores the measured systolic blood pressure value, a diastolic blood pressure storage area D34 that stores the measured diastolic blood pressure value, and a pulse storage area P35 that stores the measured pulse rate.

The processed data storage section 50 is made up of the following registers. Data set register N51 indicates the number of cells in which measurement data is stored. The systolic blood pressure total register SA52 stores the sum of the systolic blood pressure values stored in the systolic blood pressure storage area S33 of each cell. The diastolic blood pressure total register DA53 stores the sum of the diastolic blood pressure values stored in the diastolic blood pressure storage area D34 of each cell. The pulse rate total register PA54 stores the sum of the pulse rates stored in the pulse rate storage area P35 of each cell.

The average systolic blood pressure register SM55 stores the average value of the systolic blood pressure values stored in the systolic blood pressure storage area S33 of each cell. Mean diastolic blood pressure register DM
56 stores the average value of the diastolic blood pressure values stored in the diastolic blood pressure storage area D34 of each cell. The average pulse rate register PM57 is the pulse rate storage area P of each cell.
The average value of the pulse rate stored in 35 is memorized.

The print number register n58 stores the number of cells printed by the printer 15. The print systolic blood pressure total register Sa59 stores the sum of the printed systolic blood pressure values. The printed diastolic blood pressure total register Da60 stores the sum of the printed diastolic blood pressure values.

The operation of this embodiment having the above configuration will be explained below with reference to the flowcharts of FIGS. 3 to 8.

First, in step 100, initial settings such as zero adjustment of the pressure detection section 5 and voltage check of the power source (not shown) are performed. If a power supply voltage is defective, such as when a battery is used as a power source and the voltage is lower than the specified value due to discharge, a buzzer (not shown) on the display unit 16 will sound and a notification to that effect will be displayed on the display unit 16. to be displayed.

Once the initial settings are complete, steps 110, 140, and 160
It has an input for the graph printing switch 21, mode changeover switch 24, or pressure switch 20.
When the graph print switch 21 is input, the step
Graph printing processing to be described later in step 120 is executed, and the process proceeds to step 140. When the mode changeover switch 24 is operated in step 140, a mode changeover process to be described later in step 150 is executed, and the process proceeds to step 160. If the pressurization switch 20 is pressed in step 160, the process advances to step 170 and the pressure setting value set in the pressure setting switch 12 is read. Then, in the following step 180, the drive unit 14 is energized to close the exhaust valve 11, the pressurizing pump 10 is activated in a step 190, and the internal pressure of the cuff 8 is measured based on the signal from the pressure detection unit 5 in the following step 200. , wait for the pressurization set value to be reached. step 210
Press the exhaust switch 22 before reaching the pressurization set value.
is input, the process proceeds to step 220, where the CPU 7 energizes the drive unit 14, opens the exhaust valve 11, and
The air in the cuff 8 is exhausted, and the process proceeds to step 310.

When the internal pressure of the arm cuff 8 reaches the set value, step 200
The process then proceeds to step 230, where the pressurizing pump 10 is stopped. After the pressurizing pump 10 is stopped, the pressure reducing valve 9
Depressurization begins due to a smaller amount of air leaking, and measurement processing in step 240 is performed. systolic blood pressure,
The diastolic blood pressure and pulse rate are measured using known methods using vascular sounds and Korotkoff sounds from the microphone 2. And the systolic blood pressure value S, the diastolic blood pressure value D,
When the measurement of the pulse rate P and the measurement time T is completed, these measured values are temporarily stored in the measured value storage section 71 in the CPU 7 in step 250. and step
At 260, the drive unit 14 is energized, the exhaust valve 11 is opened, and the air in the cuff 8 is exhausted. Next step
At step 270, data processing, which will be described later, is performed on these measured values, and at subsequent step 300, the processing results are displayed on the display unit 16. Then steps 310, 320,
For 340 and 350, grab print switch 21, measured value print switch 23, mode changeover switch 2
4. Wait for each pressure switch 20 to be input. Therefore, during this time, the processing results of the measurement results are displayed on the display section 16.

If the graph print switch 21 is input in step 310, the graph print process is executed in step 120, and the measured value print switch 2 is turned on in step 320.
If 3 is input, the measurement value printing process described later in step 330 is executed, and if the mode changeover switch 24 is input in step 340,
If the mode switching process in step 150 is executed and the pressurization switch 20 is input in step 350, the process returns to step 170 and measurement of blood pressure etc. is started again, and if the pressurization switch 20 is not input. If so, return to step 310.

Next, details of the mode switching process in step 150 mentioned above will be explained below with reference to FIG.

In the mode switching process, step 151
Check the mode setting flag f in step 1, and after the measurement is completed, the measurement result is automatically stored in the memory 18 and the average value is calculated.If the automatic storage mode is f=1, step
At step 152, switch to f=0, and at step 153, display section 1
Turn off the automatic memory mark 6. On the other hand, step
If f=0 in step 151, it is switched to f=1 in step 154, and the automatic memory mark on the display section 16 is turned on in step 155.

Prior to measurement, the mode changeover switch 24
When measurement results are needed as data for trend graphs, set the automatic storage mode (a mode in which measurement results are automatically stored in memory 18 after measurement is completed) to avoid unnecessary measurement results as data for trend graphs. (for example, when the subject is not the subject of the data stored in the memory 18),
Used to cancel automatic memory mode.

Next, details of the data processing at step 270 in FIG. 3 will be explained below with reference to FIG.

In data processing, first, in step 271, the mode setting flag f is checked, and the automatic storage mode (f=
1), the process advances to step 272, and if f=1, the process returns to the main routine of FIG. step
In step 272, it is checked whether the measured values such as blood pressure were obtained normally.
Otherwise, the process returns to the main routine shown in FIG. Conventionally, in blood pressure monitors with a pulse measurement function, if pulse measurement was not performed due to reasons such as the number of detected Korotkoff sounds being smaller than a specified number, an error message was displayed on the display unit 16. In such a case, the process returns to the main routine from step 272.

In step 273, the pointer 31 is checked and the measurement time T' of the cell to which the pointer 31 is set, that is, the cell in which the previous measurement result is stored, is read. Then, in the following step 274, the difference ΔT from the current measurement time T stored in the measurement value storage section 71 of the CPU 7 is calculated. In the following step 275, ΔT is compared with a preset predetermined time _T0 , and if ΔT is smaller, the previous measurement result is regarded as an erroneous measurement, and the process proceeds to step 276 and below to erase the previous measurement result. .

That is, first, in step 276, the systolic blood pressure total register SA52 and the diastolic blood pressure total register DA53 are set.
Then, the systolic blood pressure value S', the diastolic blood pressure value D', and the pulse rate P' of the cell at the set position of the pointer 31 are subtracted from the total value stored in the pulse rate total register PA54. Then, in step 277, change the cell pointer position to the previous cell and set it.
Proceed to 281.

On the other hand, if the time ΔT is greater than the predetermined time _T0 in step 275, the process proceeds to step 278, where it is checked whether all the measured data are stored in each cell (1 to M) of the data storage section 30 (full). Specifically, this is done by checking whether the value "N" held in the data set register 51 is equal to the number "M" of cells in the data storage section 30. If it is not full, the process proceeds to step 280, where the data set register 51 is incremented by one, and the process proceeds to step 281.

If step 278 is full, step
Proceed to step 279 and delete the oldest measurement data among the measurement data already stored. That is, systolic blood pressure total register SA52, diastolic blood pressure total register
From the total value stored in DA53 and pulse rate total register PA54, (pointer position + 1)
The systolic blood pressure value S'', the diastolic blood pressure value D'', and the pulse rate P'' of the measurement data stored in the cell at the position are subtracted. Then, the process proceeds to step 281.

In step 281, first, the current measured values (systolic blood pressure value S, diastolic blood pressure value D, pulse rate P, measurement time T) stored in the measured value storage section 71 in the CPU 7 are stored in the cell at the position (pointer position + 1). Write. In the following step 282, the currently measured systolic blood pressure value S, diastolic blood pressure value D, and pulse rate P are added to the systolic blood pressure total register SA52, the diastolic blood pressure total register DA53, and the pulse rate total register PA54.

In the following step 283, the set position of the pointer 31 is changed to (cell position where the current pointer is set +
1) Change the position. Then, in the following step 284, it is checked whether data is stored in the cell next to the cell in which the pointer 31 was set in step 283. If no data is stored, check whether data is stored in the next cell or not.
Repeat this routine until a cell containing data is found. In other words, in step 284,
The last cell in which the oldest measurement result is stored is searched in the data storage unit 30. Next step 285
Now, the measurement time 'T of the last cell is read. Then, in the following step 286, the measured value storage section 71 of the CPU 7
The difference ΔT between the current measurement time T stored in the cell and the measurement time 'T of the last cell is calculated. Next steps
287, ΔT is compared with the preset predetermined time T ₁ , and if ΔT is larger, the measurement results stored in the last cell are considered to be too old and unsuitable as data for the trend graph. After making a judgment, the process proceeds to step 288 and subsequent steps to erase the measurement results of the final cell. First, in step 288, enter the systolic blood pressure total register.
The systolic blood pressure value 'S, the diastolic blood pressure value 'D, and the pulse rate 'P of the final cell are subtracted from SA52, diastolic blood pressure total register DA53, and pulse rate total register PA54. Then, in step 289, the last cell is cleared, and in step 290, the data set register 51 is decremented by one. And again step 285
Returning to the last cell in the data storage unit 30, that is,
At step 289, the measurement time 'T of the cell next to the cleared cell is read. From then on steps 286 to 290
Repeat this for a predetermined time T ₁ from the current measurement time T.
All of the above past measurement results are erased from the data storage section 30.

On the other hand, in step 287, the time difference ΔT is equal to the predetermined time T ₁
If it is below, proceed to step 291, systolic blood pressure total register SA52, diastolic blood pressure total register DA5
3 and the contents of the pulse rate total register PA54 are divided by the value "N" held in the data set register 51 to obtain the average values of the systolic blood pressure value S, the diastolic blood pressure value D, and the pulse rate P, and these are stored in the average systolic blood pressure register. SM
55, the data is stored in the average diastolic blood pressure register DM56 and the average pulse rate register PM57, and the data processing is completed.

Through the above processing, the measurement data is stored sequentially starting from cell 1, and when M cells are full, the next measurement data is stored in cell 1 again. At this time, at the same time as the measurement data is stored, a pointer 31 is set in the stored cell, and new measurement data is always stored in the cell next to the cell to which the pointer 31 is set.

Next, details of the graph printing process 120 will be explained with reference to the flowchart of FIG.

First, in step 121, the mode setting flag f is set to
It is checked whether the automatic memory mode (f=1) is set. If the automatic memory mode is set, the process proceeds to step 122 and below to perform graph printing processing. If the automatic memory mode is not set, The process returns to the main routine of FIG. 3 without executing the graph printing process.

In step 122, the pointer position in the data storage section 30 is read and stored in a read address register (hereinafter referred to as RA) of the CPU 7 (not shown). This designates the address of the latest measurement data stored in the data storage section 30. Then, in step 123, the print number register n58 is set to "1" to instruct printing of the latest measurement data. Next, in step 124, print systolic blood pressure total register Sa59 and print diastolic blood pressure total register Da6.
Clear each 0 to "0". Then, in step 125, prior to printing the measurement data, the pulse rate display 40 on the vertical axis in FIG. 9 is printed to prepare for printing the measurement data.

In the following step 126, measurement data is read from the cell at the position indicated by RA of the CPU 7. At this time, the month and day of measurement are read into a start time register (TS) (not shown). Then, in step 127, this measurement data is printed out by the printer 15. An example of printing in this graph printing mode is shown in FIG.
FIG. 9 shows the printing of the measurement data as described above repeated a plurality of times.
Printing is done in the direction of the arrow.

The measurement data is printed in chronological order on a graph, with the vertical axis representing the blood pressure value and the horizontal axis representing the time of measurement, starting from the most recent measurement time. This graph shows the systolic blood pressure value of 41 and the diastolic blood pressure value of 4.
2 is expressed as an axis graph, and the systolic blood pressure value and the diastolic blood pressure value at the time of measurement are shown so that they can be recognized at a glance. In addition to the blood pressure value, the vertical axis shows the pulse rate (beats/minute) 43. When printing for one time (one cell) is completed, the process proceeds to step 128, where the printed systolic blood pressure value S and diastolic blood pressure value D are added to the printed systolic blood pressure total register Sa59 and the printed diastolic blood pressure total register Da60, respectively, and the process proceeds to step 129. move on.

In step 129, it is checked whether or not the graph print switch 21 is input, and if it is not input, another step is executed to continue printing the measured data.
Proceeding to step 130, it is checked whether the value of the print number register n56 and the value of the data set register 51 are equal. If they are not equal, there is some measurement data stored in the data storage section 30 that has not been printed yet, so the process advances to step 131 and the print number register n56 is incremented by one. In the following step 132, the RA of the CPU 7 is decremented by one, and the address of the new measurement data after the printed measurement data is specified. Then, in step 133, it is checked whether RA is "0" or not, and if it is "0", step 134 is performed.
Then, RA is set to "M", the number of cells in the data storage section 30, and the process returns to step 126, where new measurement data is printed after the printed measurement data. RA is “0”
If not, the process returns to step 126 and printing is performed.

If the graph print switch 21 instructing the end of printing has been input in step 129, or if the print number register n58 is equal to the data set register 51 in step 130, all measurement data stored in the data storage section 30 will be printed. If so, proceed to step 135 to finish printing the measurement data, read the measurement date from the cell indicated by RA into the end time register (TE) (not shown), and then proceed to step 135 as shown in FIG. 45, and in step 136, the print systolic blood pressure total register Sa59 and the print diastolic blood pressure total register Da60 are divided by the value n of the print number register n58, and the average of the printed measurement data is calculated. Find the value. and step
The average value 46 obtained in step 137 is printed as a character as shown in FIG. 9, and the measurement date stored in the start time register TS and end time register TE is printed as the average value calculation section 47. Then, the process ends and returns to the main process shown in FIG.

By printing out data in this way, in order to accurately understand blood pressure values that are constantly changing, it is possible to stack up the results of measurements taken every few hours or every other day and observe changes in blood pressure values. I can do it. In particular, blood pressure values change sensitively depending on one's psychological state, and become temporarily high when one is nervous. For this reason, when blood pressure is measured by a doctor or during a group medical checkup, it becomes high, and it is not possible to accurately know the normal blood pressure value of the person taking the measurement, and patients who are easily nervous are not given antihypertensive drugs. If you use it, you could end up making your health worse. As shown in Figure 9, by measuring blood pressure values over a long period of time and displaying them at the same time, fluctuations in blood pressure values can be accurately and easily grasped, and the average blood pressure value is also displayed.
You can make more accurate judgments.

Next, the measured value printing process in step 330 will be explained below with reference to the flowchart of FIG.

When the measured value printing switch 23 is input, first, in step 331, the measured data stored in the measured value storage section 71 is read out. And in step 332,
Character print the read measurement data.

FIG. 10 shows an example of measurement data printout by such measurement value printing processing.

In the example shown in FIG. 10, "systolic blood pressure value", "diastolic blood pressure value", and "pulse value" are numerically printed along with "measurement date and time data" measured by the timer 19 as character prints.

In step 332, as shown at 81 in FIG.
Character printing of all measured value data. Next, in step 333, the pulse rate display on the vertical axis shown at 82 in FIG. 10 is printed, and preparations are made to print the measured data as a graph. Then, in step 334, the mode setting flag f is checked, and if the automatic storage mode (f=1) is selected, the process proceeds to step 335 to print the average value, and if f=1, printing of the average value is avoided, and the process proceeds to step 336. move on. When printing the average value in step 335, the average systolic blood pressure register SM55 and the average diastolic blood pressure register DM
The average values stored in PM 56 and average pulse rate register PM 57 are printed in the form of a bar graph as shown in FIG. 10 83. Next, in step 336, the current measurement data printed out in step 332 is
It is printed in the form of a bar graph as shown at 84 in FIG. Then, in the following step 337, the blood pressure value display frame on the vertical axis shown at 85 in FIG. 10 is printed, the process ends, and the process returns to the main process in FIG. 3.

What is shown at 86 in FIG. 10 is that when the vertical axis (blood pressure value) is set in the width direction of the recording paper that is preprinted on the recording paper used in this example,
This is an appropriate blood pressure area display band indicating the blood pressure value position of the WHO reference value.

For example, the WHO blood pressure ranges are systolic blood pressure of 160 mmHg or higher, diastolic blood pressure of 95 mmHg or higher, and systolic blood pressure of 140 mmHg to 160 mm.
The borderline hypertensive region includes both Hg and diastolic blood pressure values of 90 mmHg to 94 mmHg, and the normal blood pressure region includes systolic blood pressure values of 139 mmHg or less and diastolic blood pressure values of 89 mmHg or less.

Next, the measurement value display processing in step 300 is carried out in the eighth step.
This will be explained below with reference to the flowchart shown in the figure.

When displaying measured values, first check the mode setting flag in step 301 and select automatic memory mode (f=
If 1), proceed to step 302, and display the average value of each blood pressure information and the current measured value alternately on the systolic blood pressure display section, diastolic blood pressure display section, and pulse rate display section (not shown) in the display section 16, and automatically If it is not in storage mode (f
= 0), the process advances to step 303 and the current measured value is displayed on each display section. When displaying the average value in step 302, a mark is displayed at the same time to inform that the displayed value is the average value, and the mark is erased while the measured value is being displayed.

According to this embodiment, the blood pressure measuring device has a recording function,
By being equipped with a memory function, it is possible to automatically output temporal fluctuation trends in past blood pressure in the form of a trend graph, and also automatically output the average value of past measured values. , you can know the average value along with the trend graph. Therefore, using this as a guide, it is possible to easily recognize whether the current measurement result is higher or lower than usual, which is effective for blood pressure diagnosis, health management, etc.

In addition, when a measurement is taken again within a certain period of time, a function is provided to automatically erase the previous measurement data. If the results are not the same or if the previous data is unnecessary for other reasons, this data can be automatically deleted without operating a switch and only the correct data can be stored as trend data. can. Furthermore, even if there is an abnormality in the measurement results, the abnormal data can be automatically deleted and only the correct data can be stored.

From among the data stored in the storage means, by erasing past measurement results for a predetermined amount of time (or days) from the current time, unnecessarily past data can be deleted when calculating daily average values. It is possible to eliminate the influence of

Furthermore, since a mode changeover switch is provided, by operating the switch to cancel the automatic storage mode, it can be used by people other than the person who is subject to fluctuation recording.

Specific Effects of the Invention According to the present invention, by providing a blood pressure measuring device with a memory function and a data processing function, it is possible to automatically output temporal fluctuation trends and average values of past blood pressure. , it is also possible to output a graph.

Therefore, it can be effectively used for blood pressure diagnosis, health management, etc.

[Brief explanation of the drawing]

FIG. 1 is a hardware configuration diagram of a blood pressure measuring device according to the present invention, FIG. 2 is a diagram showing internal functions of the memory in FIG. 1, FIG. 3 is a flowchart showing a processing procedure by the device in FIG. Figure 4 is a flowchart showing the flow of the mode switching process in Figure 3, Figure 5 is a flowchart showing the flow of the data processing in Figure 3, and Figure 6 is a flowchart showing the flow of the graph printing process in Figure 3. Figure 7 is a flow chart showing the flow of the measured value printing process in Figure 3, Figure 8 is a flow chart showing the flow of the measured value display process in Figure 3, and Figure 9 is a flow chart showing the flow of the measured value display process in Figure 3. Figure 10 is a diagram showing an example of a graph printed by the measurement value printing process, Explanation of the symbols of the main parts, 2...Microphone,
4...AD conversion section, 5...Pressure detection section, 7...
CPU, 15...Printer, 16...Display section, 1
8...Memory, 19...Timer, 24...Mode changeover switch, 30...Measured value data storage section, 50...Processed data storage section, 51...Data set register, 71...Measured value storage section.

Claims (1)

[Scope of Claims] 1. A blood pressure measuring device comprising a measuring means for measuring at least one of a systolic blood pressure value and a diastolic blood pressure value, and an output means for outputting a measurement result by the measuring means, the device comprising: storage means for storing measurement value data measured by the means; data processing means for processing the stored measurement value data to create measurement result data; selecting means for selecting data to be output as the measurement results from data; the output means outputting a display including a graph based on the selected data; and the data processing means: comparing means for comparing the measurement time of the previous measured value data and the measurement time of the measured current measured value data; and changing the stored measured value data according to the comparison result of the comparing means. and a data changing means for changing the data stored in the storage means, if the current measurement time is within a predetermined time from the previous measurement time as a result of the comparison by the comparison means. A blood pressure measuring device characterized by deleting measured value data. 2. The blood pressure measuring device according to claim 1, wherein the data processing means calculates an average value from the measured value data. 3. The storage means has a measured value data storage section that stores the measured value data, and a processed data storage section that stores the data of the measurement results, and the measured value data storage section is composed of a plurality of cells. , each of the plurality of cells includes a systolic blood pressure storage area that stores a systolic blood pressure value, and a diastolic blood pressure storage area that stores a diastolic blood pressure value, and the processed data storage unit is configured to store the measured value data. A data set register indicating the number of cells, a systolic blood pressure total register storing the total value of the systolic blood pressure values stored in the systolic blood pressure storage area, and a systolic blood pressure total register storing the total value of the systolic blood pressure values stored in the diastolic blood pressure storage area. A total diastolic blood pressure register to store, an average systolic blood pressure register to store the average value of the systolic blood pressure values stored in the systolic blood pressure storage area, and an average systolic blood pressure register to store the average value of the systolic blood pressure values stored in the systolic blood pressure storage area. 3. The blood pressure measuring device according to claim 2, further comprising an average diastolic blood pressure register. 4. The comparing means compares the measurement time of the oldest measured value data stored with the current time, and the data changing means determines that the measurement time of the oldest measured value data stored is a predetermined number of days from the current time as a result of the comparison by the comparing means. 2. The blood pressure measuring device according to claim 1, wherein old measured value data exceeding 100 yen is deleted from said storage means. 5. The method according to claim 2, wherein the selection means selects the average value of the current measured value data measured by the measuring means and the measured value data calculated by the data processing means. Blood pressure measuring device. 6. Claim 2, wherein the selection means selects a plurality of measurement value data measured by the measurement means and an average value of the plurality of measurement value data calculated by the data processing means. Blood pressure measuring device as described in section. 7. The blood pressure measuring device further includes switching means for an operator to select and switch whether or not to store the measured value data measured by the measuring means in the storage means. The blood pressure measuring device according to any one of the ranges 1 to 6. 8. Any one of claims 1 to 7, wherein the measuring means measures not only the systolic blood pressure value and the diastolic blood pressure value, but also the pulse rate, temperature, and the date and time of measurement thereof. The blood pressure measuring device according to claim 1. 9. The blood pressure measuring device according to any one of claims 1 to 8, wherein the output means includes a display device and a printer.