JP4426282B2 - Sphygmomanometer - Google Patents

Description

  The present invention relates to an electric sphygmomanometer, and more particularly to a sphygmomanometer having a personal mode used by a specific user.

  An individual user may purchase a blood pressure monitor when he / she recommends a doctor to record daily blood pressure fluctuations for the treatment of hypertension and so on. When hypertension is found and a doctor calls attention, it is assumed that the patient is recommended by himself or his / her family to help with health management with aging. In these cases, it is predicted that the blood pressure monitor is frequently used by a specific person.

By the way, in the conventional oscillometric sphygmomanometer including the sphygmomanometer described in Patent Document 1, measurement conditions for measuring blood pressure such as a fine depressurization speed, a fine pressurization speed, and a pressurization value, and determination of the blood pressure value The conditions for determining blood pressure values for the patient are constant, and there is no one having a function of changing according to individual users.
JP-A-6-78887

  In an oscillometric sphygmomanometer that measures the inside of the cuff in a slow depressurization process, the pressure is increased to a pressure value slightly higher than the maximum blood pressure value (eg, maximum blood pressure value +30 mmHg), and the exhaust is performed from that point. The lower the value is within the range that does not hinder the measurement, the shorter the measurement time is, and there is less risk of congestion and there is no burden on the user.

  However, in actuality, when the pressure is uniformly increased to a predetermined value (eg, 180 mmHg), and then the measurement is started by shifting to a slight pressure reduction, when it is determined that the pressurization is insufficient, the predetermined value is more than the previous value. (Example + 30 mmHg) Repressurize to a higher pressure and perform measurement again, or control the pressurization speed slightly slower (eg 15 mmHg / S), detect pulse wave during pressurization and pressurize value A fuzzy pressurization type sphygmomanometer or the like is used. However, in any case, the pressurization value varies, and it is optimal for a certain person, but there is a risk of overpressure for a certain person.

  Further, in an oscillometric sphygmomanometer that measures the inside of the cuff in the process of slow pressurization, the pump is driven at full rotation from the start of measurement to a predetermined value (for example, 30 mmHg), and then the slow pressurization (for example, 4 mmHg / If the measurement is switched to (sec) and the rapid evacuation is performed together with the determination of the maximum blood pressure value, there are the following problems. That is, for example, when a user having a maximum blood pressure value of 150 mmHg and a minimum blood pressure value of 100 mmHg is used, a pulse wave signal necessary for determining the minimum blood pressure value is detected from the pressure value (for example, 30 mmHg) at which the fine pressure is started. Up to the applied pressure value (for example, 75 mmHg), although it is a period that originally does not require the fine pressurization, the fine pressurization is performed, and the measurement time becomes long, which may cause pain to the user.

  Further, in the sphygmomanometer of the measurement system during decompression and the measurement system during pressurization, when measured at a constant fine decompression speed and fine pressurization speed, if the user's pulse rate is low, the pulse wave necessary for determining the blood pressure value There is a risk that the measurement accuracy will decrease due to the lack of data. Further, when the user's pulse rate is fast, the number of pulse wave data increases, but an increase beyond the necessity for determining the blood pressure value is equivalent to a waste of measurement time. In order to avoid these problems, a method has been proposed to control the decompression speed and pressurization speed according to the pulse rate after starting the measurement and detecting the pulse wave, but it affects the pulse wave detection sensitivity during measurement. Measurements may be inaccurate.

  In addition, the measurement principle of the oscillometric sphygmomanometer of the measurement method at the time of decompression and the measurement method during the pressurization is basically to detect the pulse wave superimposed on the pressure at the time of the minute pressure depressurization or the minute pressure pressurization and to determine the maximum value of the pulse wave amplitude. The maximum blood pressure side is about 60% of the maximum pulse wave amplitude value, and the minimum blood pressure side is the pressure at the generation point of the pulse wave signal corresponding to about 70% of the maximum pulse wave amplitude value. This is a method of obtaining a value. This method of measurement has no clear rationale, and is a method devised based on statistically obtained results. Therefore, when compared with auscultation methods, some people measure the maximum and minimum blood pressure values. Even if both results are almost correct, the maximum blood pressure value is correct for some people, but the minimum blood pressure value tends to be negative every time. There is a risk that measurement errors may occur in a specific direction.

  The object of the present invention has been made in consideration of the above-mentioned circumstances, and by using the personal mode, the measurement time can be shortened, the burden on the user at the time of measurement can be reduced, and the measurement accuracy can be improved. It is to provide a sphygmomanometer that can.

As means for solving the above-mentioned problem, the first means is:
A cuff wound around the artery passage portion of the user, and a pressurizing means for pressurizing the cuff, a pressure detecting means and the city for detecting the pressure in the cuff, pressure slow depressurization or very low speed pressure to said cuff In the sphygmomanometer that discriminates the pulse wave signal superimposed on this pressure from the pressure detected by the pressure detecting means in the process, and determines and measures the blood pressure value from this pulse wave signal and the pressure value,
A personal mode used by a specific user is provided. In this personal mode, blood pressure for determining the blood pressure value of the specific user and the maximum blood pressure value and the minimum blood pressure value of the specific user are determined. at least one value determining condition is a shall be set based on the past measurement results of the specific user,
The blood pressure value determination condition is a ratio of each pulse wave amplitude value corresponding to each of a past reference maximum blood pressure value and a reference minimum blood pressure value, which is a reference for a specific user, to a pulse wave amplitude maximum value. A sphygmomanometer .

The second means is
Among the above measurement conditions, the pressure value in the case of the pressure reduction measurement method that measures the blood pressure value in the process of depressurizing the inside of the cuff is the pressure value obtained by adding a predetermined value to the past systolic blood pressure value measurement result for the specific user The sphygmomanometer according to the first means is characterized in that it is set as follows .

The third means is
Among the above measurement conditions, the fine pressure pressurization start pressure value in the case of the pressurization measurement method that measures the blood pressure value in the process of finely pressurizing the inside of the cuff is a predetermined value from the past minimum blood pressure value measurement result for the specific user. A sphygmomanometer according to the first or second means, characterized in that it is set to a subtracted pressure value.
The

The fourth means is
Among the above measurement conditions, the slow depressurization rate in the case of the depressurization measurement method that measures the blood pressure value in the process of depressurizing the inside of the cuff, and the pressurization measurement method that measures the blood pressure value in the process of depressurizing the inside of the cuff very slowly In this case, the sphygmomanometer according to any one of the first to third means is characterized in that at least one of the slow pressurization speeds is set based on a past pulse rate measurement result of a specific user .

The fifth means is
The sphygmomanometer according to a fourth means, wherein the slow depressurization speed or the slow pressurization speed is set in a relationship proportional to a past pulse rate of a specific user within a predetermined range .

The sixth means is
The blood pressure value determination condition includes the provisional blood pressure value calculated when the ratio of the pulse wave amplitude value corresponding to the maximum blood pressure value and the minimum blood pressure value to the maximum pulse wave amplitude value is set as a standard value, and a reference for a specific user. This is a sphygmomanometer according to any one of the first to fifth means, which is a difference from a past reference blood pressure value .

The seventh means is
Pressurization value in the case of the pressure reduction measurement method that measures the blood pressure value in the process of depressurizing the inside of the cuff at a low pressure, and start of the fine pressure pressurization in the case of the pressure measurement method that measures the blood pressure value in the process of slightly pressurizing the inside of the cuff The pressure value is set by returning to the initial setting value when it is determined that the measurement in the personal mode is an error and the pressurization value or the fine pressure start pressure value is determined to be inappropriate. The sphygmomanometer according to any one of the first to sixth means.

The eighth means is
Standard mode used by people other than specific users. In this standard mode, the measurement conditions for measuring blood pressure values and the blood pressure value determination conditions for determining the maximum and minimum blood pressure values are set to the standard values. The sphygmomanometer according to any one of the first to seventh means, wherein the sphygmomanometer is configured to be switchable between the personal mode and the standard mode .

The ninth means is
In the personal mode, for each of a plurality Personality particular user, at least one measurement condition and blood pressure determining condition, first, characterized in that it is set based on the past measurement results of each particular user A blood pressure monitor according to any one of the eighth means.

According to any one of the first to sixth means , in the personal mode used by the specific user, the measurement conditions for measuring the blood pressure value of the specific user and the blood pressure value of the specific user are determined. Since at least one of the blood pressure value determination conditions is set based on the past measurement result of the specific user, for example, in the case of a measurement method at the time of decompression in which the blood pressure value is measured in the process of depressurizing the inside of the cuff at a low speed Pressure measurement start pressure value in the case of the pressurization measurement method that measures the blood pressure value in the process of slightly pressurizing the inside of the cuff and the pressure inside the cuff can be set according to the specific user, so the measurement time of the blood pressure value can be set While being able to shorten, since the said pressurization value does not become excessive for a specific user, the burden at the time of a measurement can also be reduced. In addition, the pressure reduction rate of the fine pressure reduction in the case of the measurement method at the time of pressure reduction, the pressurization speed of the fine pressure in the case of the measurement method at the time of the pressure, or the blood pressure value determination condition can be set according to the specific user, so the blood pressure measurement Accuracy can be improved.

According to the seventh means , the pressurization value in the measurement method at the time of depressurization and the slow pressure start pressure value in the case of the measurement method at the time of pressurization are determined to be errors in the measurement in the personal mode. Or when the fine pressure start pressure value is determined to be inappropriate, it is set after returning to the initial set value. Thus, the measurement in the next personal mode can be reliably performed.

According to the eighth means , since the personal mode used by the specific user and the standard mode used by a person other than the specific user can be switched, the measurement conditions of the specific user in the personal mode can be changed. Without affecting the blood pressure value determination condition or the stored measurement result of the specific user, a person other than the specific user can select the standard mode and interrupt the blood pressure using the same sphygmomanometer.

According to the ninth means , in the personal mode, at least one of the measurement condition and the blood pressure value determination condition is set for each of the plurality of specific users based on the past measurement result of each specific user. A plurality of specific users can optimally measure blood pressure values using a single blood pressure monitor.

The best mode for carrying out the present invention will be described below with reference to the drawings.
[A] Measurement system sphygmomanometer during decompression FIG. 1 is a block diagram showing the structure of a measurement system sphygmomanometer during decompression in the first embodiment of the sphygmomanometer according to the present invention. FIG. 2 is a graph showing the pressure change in the cuff when the blood pressure is measured in the “standard mode” in which the pressurization value is a standard value in the measurement-type sphygmomanometer during decompression in FIG. FIG. 3 is a graph showing the relationship between the systolic blood pressure value, the diastolic blood pressure value, and the pulse wave amplitude in the reduced pressure measurement system sphygmomanometer of FIG.

  1 is an oscillometric sphygmomanometer that measures a user's blood pressure value and pulse rate in the process of depressurizing the cuff 11 at a low speed. This measurement system sphygmomanometer at the time of decompression includes a cuff 11 wound around an arterial passage site such as a user's arm or wrist, and a pressurizing means for introducing pressurized air into the cuff 11 to pressurize the cuff 11. As a pressure pump 12, an electric pressure reducing valve 13 for exhausting pressurized air in the cuff 11 to depressurize the cuff 11, a pressure sensor 14 as pressure detecting means for detecting the pressure in the cuff 11, and a pump The pressure pump 12 is controlled via the drive circuit 15, the electric pressure reducing valve 13 is controlled via the pressure reducing valve drive circuit 16, and this pressure is detected from the pressure detected by the pressure sensor 14 in the process of depressurizing the cuff 11 at a low speed. And a CPU 17 that discriminates the pulse wave signal superimposed on the pulse wave and determines the maximum blood pressure value, the minimum blood pressure value, and the pulse rate from the pulse wave signal and the pressure value. The decompression speed including the slow decompression of the cuff 11 is controlled by the CPU 17 using a PWM output signal that changes the duty ratio of the pulse width of a predetermined period.

  The pressure sensor 14 is a capacitance sensor. By incorporating the pressure sensor 14 as a part of the oscillator, the pressure change is converted into a change in the oscillation frequency, and the CPU 17 captures the pressure as a count number for a predetermined time. And detect the pulse. Alternatively, the pressure sensor 14 may be a semiconductor sensor using a piezoresistor, and the pressure signal may be amplified to a predetermined level, A / D converted, and taken into the CPU 17.

  The maximum blood pressure value, the minimum blood pressure value, and the pulse rate determined by the CPU 17 are displayed on a display device 18 such as a liquid crystal display device and stored in a data memory 19 such as an EEPROM. In the data memory 19, in addition to the measurement results such as the blood pressure value and the pulse rate, measurement conditions such as a pressurization value (described later) and a depressurization speed during a slow depressurization, a blood pressure for determining a maximum blood pressure value and a minimum blood pressure value. Value determination conditions and the like are stored. The data memory is not limited to the EEPROM, but may be an external SRAM or a RAM built in the CPU 17.

  The operation of the CPU 17 is executed by operating the measurement start key 20. The CPU 17 also manages the remaining amount of the power supply (battery) 22 using the power supply circuit 21. Further, the CPU 17 displays the latest measurement results (maximum blood pressure value, minimum blood pressure value, and pulse rate) stored in the data memory 19 on the display device 18 by operating the memory call key 23.

  The memory call key 23 includes an up arrow key and a down arrow key not shown. The up arrow key functions as an increment key, and calls up from the latest measurement result to the old one each time it is operated. Also, the down arrow key functions as a decrement key, and each time it is operated, it calls up the oldest measurement result from the oldest one. With this configuration, even when there are many measurement results (maximum blood pressure value, minimum blood pressure value, etc.) stored in the data memory 19, the display device 18 can be easily called.

  By the way, the CPU 17 has a personal mode in which a specific user uses the measurement system sphygmomanometer 10 during decompression, and a standard mode in which a person other than the specific user (unspecified person) uses the measurement system sphygmomanometer 10 during decompression. This mode switching is executed by operating the mode switch 24.

  In the standard mode, the measurement conditions for measuring the blood pressure value and the pulse rate (the pressurization value which is the pressure value when the initial cuff 11 in the measurement is rapidly pressurized and then shifted to the slow depressurization for measurement, The blood pressure value determination condition for determining the maximum blood pressure value and the minimum blood pressure value is set to the standard value. . The blood pressure value determination condition is, for example, a ratio (threshold) of the pulse wave amplitude value corresponding to the maximum blood pressure value to the pulse wave amplitude maximum value is 60%, and the pulse wave amplitude maximum value of the pulse wave amplitude value corresponding to the minimum blood pressure value Is set to 70%.

  In the personal mode, the measurement conditions (for example, the pressurization value and the slow depressurization rate) for measuring the blood pressure value and the pulse rate of the specific user, and the maximum blood pressure value and the minimum blood pressure value of the specific user are determined. The blood pressure value determination condition is set based on the past measurement results (maximum blood pressure value, minimum blood pressure value, and pulse rate) of the specific user as will be described later.

Next, the operation of the pressure-reducing measurement type sphygmomanometer 10 will be described.
When the measurement start key 20 is pressed, the CPU 17 turns on the display device 18 for a predetermined time and then reads the pressure value when the atmospheric pressure is released (no pressure applied) as a pressure zero set value. 0 is displayed in the first digit of the high blood pressure value display area.
After the zero setting, the CPU 17 outputs a drive signal to the pump drive circuit 15 and the pressure reducing valve drive circuit 16, the electric pressure reducing valve 13 is held in a fully closed state, and the pressure pump 12 is driven to pressurize the cuff 11. Start. The pressure value in the cuff 11 during pressurization and measurement is updated and displayed on the display device 18.

  At the time of shipment from the factory, the measurement conditions are set to standard values for both the personal mode and the standard mode. That is, as shown in FIG. 2, when the pressure value in the cuff 11 reaches a predetermined pressurization value (180 mmHg), the CPU 17 turns off the pump drive signal to the pressurization pump 15 and turns off the electric pressure reducing valve 13. The cuff 11 is gradually released from the closed state, and the slow depressurization in the cuff 11 is started, and the process proceeds to blood pressure measurement. The slow depressurization speed is controlled to a predetermined value (for example, 4 mmHg / sec) by the CPU 17.

  The CPU 17 discriminates, as a pulse wave signal, a rise in the baseline of the decompression characteristic among the pressures detected by the pressure sensor 14, and stores the amplitude value together with the pressure value at the generation point in a storage means (not shown). As shown in FIG. 3, the amplitude of the pulse wave detected during the measurement is initially small, gradually increases to the maximum value, and then gradually decreases. In the process of gradually decreasing the pulse wave amplitude value, when a pulse wave signal having a magnitude equal to or less than a predetermined ratio (for example, 50% of the maximum pulse wave amplitude value) to the maximum pulse wave amplitude value is detected, the measurement is terminated. The CPU 17 calculates a maximum blood pressure value and a minimum blood pressure value.

  When the changeover switch 24 for switching between the personal mode and the standard mode is in the position of the standard mode, the blood pressure value determination condition (blood pressure value determination parameter) between the maximum blood pressure value and the minimum blood pressure value is fixed to the standard value. The CPU 17 sets the pressure value corresponding to the pulse wave amplitude value at a predetermined ratio (for example, 60% of the maximum pulse wave amplitude value) to the maximum pulse wave amplitude value while the pulse wave amplitude value reaches the maximum value from the start of measurement. A maximum blood pressure value is determined by calculation. From a pulse wave signal between the maximum value of the pulse wave amplitude and the end of measurement, a predetermined ratio (for example, 70% of the maximum value of the pulse wave amplitude) of the pulse wave amplitude maximum value is obtained. A pressure value corresponding to the pulse wave amplitude value is calculated to determine a minimum blood pressure value.

  The CPU 17 calculates the time of several beats (for example, 5 beats) from the time when the pulse wave signal having an amplitude value equal to or greater than a predetermined value (eg, 1 mmHg) is detected after the slow pressure reduction in the cuff 11 is started, and the pulse rate is calculated. decide.

  Upon completion of the measurement, the CPU 17 turns off the pressure reducing valve drive circuit 16 to fully open the electric pressure reducing valve 13 and quickly exhausts it to release the pressure in the cuff 11 to the atmospheric pressure. The CPU 17 stores the blood pressure value and the pulse rate measurement result in the data memory 19 and displays them on the display device 18. The storage of the measurement result may be displayed on the display device 18 when the blood pressure monitor 10 is turned off.

[B] Measurement system sphygmomanometer during pressurization FIG. 7 is a block diagram showing the structure of the measurement system sphygmomanometer during pressurization in the second embodiment of the sphygmomanometer according to the present invention. FIG. 8 is a graph showing the pressure change in the cuff when the blood pressure is measured in the “standard mode” in which the fine pressure pressurization starting pressure value is a standard value in the pressurization measurement type sphygmomanometer of FIG. FIG. 9 is a graph showing the relationship between the systolic blood pressure value, the diastolic blood pressure value, and the pulse wave amplitude in the pressurization measurement type sphygmomanometer of FIG.

  7 is an oscillometric sphygmomanometer that measures a user's blood pressure value and pulse rate in the process of pressurizing the cuff 11 at a low speed. In the pressurization measurement method sphygmomanometer 30, the same parts as those in the deceleration measurement method sphygmomanometer 10 are denoted by the same reference numerals.

  This measuring system sphygmomanometer 30 at the time of pressurization introduces pressurized air into the cuff 11 via an air tank 31 and an air throttle 32, which is wound around an arterial measurement site such as a user's arm or wrist. The pressure pump 12 as a pressurizing means for pressurizing the inside of the cuff 11, the electric quick exhaust valve 33 for rapidly exhausting the pressurized air in the cuff 11, and the pressure detection means for detecting the pressure in the cuff 11 In the process of fully closing the electric quick exhaust valve 33 via the pressure sensor 14 and the quick exhaust valve drive circuit 34 and controlling the pressurization pump 12 via the pump drive circuit 15 to pressurize the cuff 11 at a very low speed. And a CPU 17 for discriminating a pulse wave signal superimposed on the pressure from the pressure detected by the pressure 14, and determining a maximum blood pressure value, a minimum blood pressure value, and a pulse rate from the pulse wave signal and the pressure value. Is done.

  The pressurization speed including the slow pressurization of the cuff 11 is controlled by the CPU 17 using a PWM output signal that changes the duty ratio of the pulse width of a predetermined period. The air tank 31 and the air restrictor 32 function to attenuate vibrations of air pressure introduced from the pressure pump 12 to the cuff 11.

  The pressure sensor 14 is a capacitance sensor. By incorporating the pressure sensor 14 as a part of the oscillator, the pressure change is converted into a change in the oscillation frequency, and the CPU 17 captures the pressure as a count number for a predetermined time. And detect the pulse. Alternatively, the pressure sensor 14 may be a semiconductor sensor using a piezoresistor, and the pressure signal may be amplified to a predetermined level, A / D converted, and taken into the CPU 17.

  The maximum blood pressure value, the minimum blood pressure value, and the pulse rate determined by the CPU 17 are displayed on a display device 18 such as a liquid crystal display device and stored in a data memory 19 such as an EEPROM. In the data memory 19, in addition to the measurement results such as the blood pressure value and the pulse rate, the measurement conditions such as the fine pressure start pressure value (described later) and the pressurization speed during the fine pressure application, the maximum blood pressure value and the minimum blood pressure value The blood pressure value determination condition and the like for determining are stored. The data memory is not limited to the EEPROM, but may be an external SRAM or a RAM built in the CPU 17.

  The operation of the CPU 17 is executed by operating the measurement start key 20. The CPU 17 also manages the remaining amount of the power supply (battery) 22 using the power supply circuit 21. Further, the CPU 17 displays the latest measurement results (maximum blood pressure value, minimum blood pressure value, and pulse rate) stored in the data memory 19 on the display device 18 by operating the memory call key 23.

  The memory call key 23 includes an up arrow key and a down arrow key not shown. The up arrow key functions as an increment key, and calls up from the latest measurement result to the old one each time it is operated. Also, the down arrow key functions as a decrement key, and each time it is operated, it calls up the oldest measurement result from the oldest one. With this configuration, even when there are many measurement results (maximum blood pressure value, minimum blood pressure value, etc.) stored in the data memory 19, the display device 18 can be easily called.

  By the way, the CPU 17 has a personal mode in which a specific user uses the pressurization measurement type sphygmomanometer 30, and a standard mode in which a person other than the specific user (unspecified person) uses the pressurization measurement type sphygmomanometer 30. The mode is switched by operating the mode switch 24.

  In the standard mode, the measurement conditions for measuring the blood pressure value and the pulse rate (after the pressure inside the initial cuff 11 is rapidly pressurized, the pressure value is the pressure value when shifting to the fine pressure for measurement start. The pressure value and the blood pressure value determination condition for determining the maximum blood pressure value and the minimum blood pressure value are standard values. Is set to The blood pressure value determination condition is, for example, a ratio (threshold) of the pulse wave amplitude value corresponding to the maximum blood pressure value to the pulse wave amplitude maximum value is 60%, and the pulse wave amplitude maximum value of the pulse wave amplitude value corresponding to the minimum blood pressure value Is set to 70%.

  In the personal mode, the measurement conditions for measuring the blood pressure value and pulse rate of the specific user (the fine pressure pressurization start pressure value and the fine pressure pressurization speed), and the maximum blood pressure value and the minimum blood pressure value of the specific user. The blood pressure value determination condition for determining the blood pressure is set based on the past measurement results (maximum blood pressure value, minimum blood pressure value, and pulse rate) of the specific user, as will be described later.

Next, the operation of the pressurization measurement type sphygmomanometer 30 will be described.
When the measurement start key 20 is pressed, the CPU 17 turns on the display device 18 for a predetermined time and then reads the pressure value when the atmospheric pressure is released (no pressure applied) as a pressure zero set value. 0 is displayed in the first digit of the high blood pressure value display area.
After the zero setting, the CPU 17 outputs drive signals to the pump drive circuit 15 and the quick exhaust valve drive circuit 34, holds the electric quick exhaust valve 33 in a fully closed state, and drives the pressurizing pump 12 with full output. Pressurization of the cuff 11 is started. The pressure value in the cuff 11 during pressurization is updated and displayed on the display device 18.

  At the time of shipment from the factory, the measurement conditions are set to standard values for both the personal mode and the standard mode. That is, as shown in FIG. 8, when the pressure value in the cuff 11 reaches a predetermined fine pressurization start pressure value (30 mmHg), the CPU 17 previously obtained a pump drive signal to the pump drive circuit 15 by an experiment. The pressurization pump 12 is driven by reducing the output to an optimum drive level, and thereafter, the pressurization pump 12 is controlled based on the pressure and time so that a predetermined fine pressurization speed is obtained. The electric quick exhaust valve 33 remains ON (fully closed) until the measurement is completed.

  The CPU 17 discriminates an increase in the baseline of the pressurization characteristic as a pulse wave signal among the pressures detected by the pressure sensor 14, and stores the amplitude value together with the pressure value at the generation point in a storage means (not shown). . As shown in FIG. 9, the pulse wave amplitude value detected during the measurement is initially small, gradually increases to the maximum value, and then gradually decreases. The CPU 17 ends the measurement when a pulse wave signal equal to or less than a predetermined ratio (for example, 50% of the maximum pulse wave amplitude value) with respect to the maximum pulse wave amplitude value is detected in the process of gradually decreasing the pulse wave amplitude value. Calculate the maximum blood pressure value and the minimum blood pressure value.

  When the changeover switch 24 for switching between the personal mode and the standard mode is in the position of the standard mode, the blood pressure value determination condition (blood pressure value determination parameter) between the maximum blood pressure value and the minimum blood pressure value is fixed to the standard value. The CPU 17 sets the pressure value corresponding to the pulse wave amplitude value at a predetermined ratio (for example, 70% of the maximum pulse wave amplitude value) with respect to the maximum value of the pulse wave amplitude while the pulse wave amplitude reaches the maximum value from the start of measurement. A minimum blood pressure value is determined by calculation, and a pulse wave having a predetermined ratio (for example, 60% of the maximum pulse wave amplitude value) to the maximum pulse wave amplitude value from the pulse wave signal from the maximum pulse wave amplitude value to the end of measurement. A pressure value corresponding to the amplitude value is calculated to determine a systolic blood pressure value.

  The CPU 17 calculates the time of several beats (for example, 5 beats) from the time when the pulse wave signal having an amplitude value equal to or greater than a predetermined value (for example, 1 mmHg) is detected after the slow depressurization in the cuff 11 is started, and the pulse rate is calculated. decide.

  At the end of the measurement, the CPU 17 turns off the electric quick exhaust valve 33 (full opening) to perform quick exhaust, and opens the cuff 11 to atmospheric pressure. The CPU 17 records the blood pressure value and pulse rate measurement result obtained by the calculation in the data memory 19 and displays them on the display device 18. The storage of the measurement result may be displayed on the display device 18 when the sphygmomanometer 30 is turned off.

[C] Update of measurement conditions in personal mode of measurement system sphygmomanometer 10 during deceleration and measurement system sphygmomanometer 30 during pressurization Update of measurement conditions in personal mode includes measurement system sphygmomanometer 10 during decompression and measurement system during pressurization In the sphygmomanometer 30, it is similarly executed by the CPU 17.

C-1) Renewal of Pressurized Value in Measurement System Blood Pressure Monitor 10 at Depressurization The data memory 19 is configured to store, for example, 30 measurement results. When measurement is performed 30 times or more, the oldest measurement result is deleted, and the latest measurement result is newly stored. When determining the next pressurization value in the personal mode used by the specific user, the CPU 17 obtains an average value of the maximum blood pressure values of the specific user currently stored in the data memory 19 and sets the predetermined value as the predetermined value. A value obtained by adding a value (for example, 30 mmHg) is set as the next pressurization value. As another example, the CPU 17 does not mean the average value of all systolic blood pressure values currently stored in the data memory 19 (up to 30 times), but a predetermined number (for example, five) in order from the latest systolic blood pressure value. Only the average value, the latest systolic blood pressure value, or only the maximum systolic blood pressure value currently stored in the data memory 19 may be used.

  When the next pressurization value is updated from the past five systolic blood pressure measurement results, if there is no measurement result, the initial value (for example, 180 mmHg) is maintained as the pressurization value (see FIG. 2) and measured. In the case of one result, the pressure value obtained by adding 30 mmHg to one systolic blood pressure value stored in the data memory 19 is updated as a pressurization value (see FIGS. 4 and 5), and the measurement result is n. In this case, a pressure value obtained by adding 30 mmHg to (total of n systolic blood pressure values stored in the data memory 19 / n) is updated as a pressurization value (see FIGS. 4 and 5). (However, n is a maximum of 5)

C-2) Measurement system at the time of pressurization Updating of the pressure start pressure value at the very low speed in the sphygmomanometer 30 The data memory 19 is configured to store, for example, 30 measurement results. When measurement is performed 30 times or more, the oldest measurement result is deleted, and the latest measurement result is newly stored. When determining the next slow pressure start pressure value in the personal mode used by the specific user, the CPU 17 obtains the average value of the minimum blood pressure value of the specific user currently stored in the data memory 19, and A value obtained by subtracting a predetermined value (for example, 25 mmHg) from the value is set as the next fine pressure start pressure value. As another example, the CPU 17 does not mean the average value of all diastolic blood pressure values currently stored in the data memory 19 (maximum of 30 times), but a predetermined number (for example, 5) in order from the latest diastolic blood pressure value. Only the average value, the latest latest blood pressure value, or only the minimum value of the lowest blood pressure value currently stored in the data memory 19 may be used.

  When the next slow pressure start pressure value is updated from the measurement results of the last five minimum blood pressure values, if there is no measurement result, the initial value (for example, 30 mmHg) is maintained as the slow pressure start pressure value ( In the case of one measurement result, the pressure value obtained by subtracting 25 mmHg from one diastolic blood pressure value stored in the data memory 19 is updated as the slow pressurization start pressure value (see FIG. 10). When the number of measurement results is n, the pressure value obtained by adding 25 mmHg from (total of n minimum blood pressure values stored in the data memory 19 / n) is updated as the slow pressure start pressure value (FIG. 10). reference). (However, n is a maximum of 5)

C-3) When a person other than the specific user mistakenly measures the blood pressure in the personal mode, or the blood pressure value of the specific user has changed significantly, the CPU 17 It is determined that the starting pressure value is inappropriate, and blood pressure measurement is regarded as an error. The pressurization value and the fine pressure reduction start pressure value are restored to the initial set values (standard values) by the CPU 17 when it is determined that the blood pressure measurement in the personal mode is in error and thus inappropriate. As a result, the next measurement in the personal mode can be reliably executed.

C-4) Update of slow depressurization speed in measurement method sphygmomanometer 10 during decompression or update of slow pressurization speed in measurement method sphygmomanometer 30 CPU 17 is a data memory 19 of a specific user who uses the personal mode. Based on the past pulse rate measurement results stored in the above, in the measurement system sphygmomanometer 10 during decompression, the slow depressurization rate at the next personal mode measurement is measured, and in the measurement system sphygmomanometer 30 during pressurization, the next personal mode measurement is performed. Update the minute pressurization speed. The pulse rate measurement result uses an average value of all the pulse rate measurement results (for example, a maximum of 30 times) stored in the data memory 19, and a predetermined number (for example, 5) of the latest pulse rate measurement results in order from the latest. The average value may be used, or only the latest pulse rate measurement result may be used.

  The slow depressurization speed or the slow pressurization speed in the personal mode is set to be fast when the past pulse rate for the specific user is fast, and slow when the past pulse rate for the specific user is slow. Specifically, in the personal mode, the slow depressurization speed or the fine pressurization speed update corresponding to the pulse rate of the specific user is set in advance by setting an upper limit and a lower limit of the pulse rate. Set the slow pressurization speed in a proportional relationship by calculation.

In other words, the slow depressurization speed or the fine pressurization speed is
If the pulse rate is 40 beats / minute, then 3.0 mmHg / sec.
If the pulse rate is greater than or equal to 160 beats / minute, then 6.0 mmHg / sec.
When the pulse rate is between 40 and 160 beats / minute, slow depressurization rate = 3.0 + (0.025 × (past pulse rate measurement value−40)
Slow pressurization speed = 3.0 + (0.025 × (past pulse rate measurement value−40)
Calculate with the following formula.

For simplicity, the average value of the past pulse rate is used, and the following table data for the slow depressurization speed and the fine pressurization speed corresponding to the pulse rate are prepared in advance in a ROM (not shown) and the values are referred to. Then, a fine pressure reduction speed or a fine pressure application speed may be used.
Table data When pulse rate ≤ 40 beats / minute 3.0 mmHg / sec
When the pulse rate is 41 to 50 beats / minute, 3.25 mmHg / sec
When the pulse rate is 51 to 60 beats / minute, 3.5 mmHg / sec
In the case of a pulse rate of 61 to 70 beats / minute, 3.75 mmHg / sec
In the case of pulse rate 71-80 beats / minute 4.0mmHg / sec
When the pulse rate is 81 to 90 beats / minute, 4.25 mmHg / sec
In the case of pulse rate 91-100 beats / minute 4.5mmHg / sec
4.75 mmHg / sec when the pulse rate is 101 to 110 beats / minute
When the pulse rate is 111 to 120 beats / minute, 5.0 mmHg / sec
When the pulse rate is 121 to 130 beats / minute, 5.25 mmHg / sec
When the pulse rate is 131 to 140 beats / minute 5.5 mmHg / sec
When the pulse rate is 141 to 150 beats / minute 5.75 mmHg / sec
For pulse rate ≧ 151 beats / minute 6.0 mmHg / sec

[D] Setting of blood pressure value determination condition in personal mode of measurement system sphygmomanometer 10 during deceleration and measurement system sphygmomanometer 30 during pressurization In the hourly measuring blood pressure monitor 30, the CPU 17 executes the same. First, a reference blood pressure value is input, and then calibration measurement for determining a blood pressure value determination condition based on the reference blood pressure value is executed. The reference blood pressure value is a reliable past measurement result (maximum blood pressure value and minimum blood pressure value) of a specific user who uses the personal mode, and for example, one measured by a medical institution or the like is used.

D-1) Input of Reference Blood Pressure Value When the reference input key 26 of the reference blood pressure value input key 25 shown in FIGS. 1, 7, and 11A is pressed, the sphygmomanometers 10 and 30 enter the reference blood pressure value input mode. Transition. First, after the reference blood pressure value of the systolic blood pressure value is input with the numeric key 27, when the enter key 28 is pressed, the reference systolic blood pressure value is set, and the process proceeds to input of the reference diastolic blood pressure value. When the reference blood pressure value of the minimum blood pressure value is input and the enter key 28 is pressed, the reference minimum blood pressure value is set, and the input of the reference blood pressure value is completed. These reference systolic blood pressure values and reference diastolic blood pressure values are stored in the data memory 19.

  FIG. 11B shows a reference blood pressure value input key 35 in which the numeric key 27 in FIG. 11A is replaced with an up arrow key 36 and a down arrow key 37. When the reference input key 26 of the reference blood pressure value input key 35 is pressed, the CPU 17 first displays the standard value of the maximum blood pressure value (for example, 150 mmHg) on the display device 18, and each time the up arrow key 36 is pressed. The numerical value is incremented by 1 and the numerical value is decremented by 1 every time the down arrow key 37 is pressed. When the target numerical value is reached, the enter key 28 is pressed to finish inputting the reference systolic blood pressure value. Then, the process proceeds to input of a reference minimum blood pressure value.

  Similarly to the input of the reference systolic blood pressure value, the input of the reference systolic blood pressure value displays the standard value (for example, 100 mmHg) on the display device 18 when the reference input key 26 is pressed, It is configured to input by the same operation. These reference systolic blood pressure values and reference diastolic blood pressure values are stored in the data memory 19. When the stored reference systolic blood pressure value and reference diastolic blood pressure value are input next time, If it is configured to display on the display device 18 instead of the value, the next reference blood pressure value can be input quickly.

D-2) Calibration measurement When the input of the reference blood pressure value is completed, the sphygmomanometers 10 and 30 shift to a calibration measurement waiting state for determining the blood pressure value determination condition. When the cuff 11 of the sphygmomanometer 10 or 30 is wound around an arm or the like and the measurement start key 20 is pressed, the CPU 17 of the sphygmomanometer 10 or 30 reads the inputted reference maximum blood pressure value, as shown in FIGS. Calculate the percentage of the pressure point corresponding to each reference minimum blood pressure value with respect to the maximum pulse wave amplitude value of the pulse wave signal detected during calibration measurement, and this ratio (%) Is stored in the data memory 19 as a blood pressure value determination condition for determining the maximum blood pressure value and the minimum blood pressure value. When the calibration measurement is finished and the confirmation key 28 of the reference blood pressure value input key 25 or 35 is pressed, the CPU 17 confirms the setting of the blood pressure value determination condition and shifts to the power OFF.

  When blood pressure is measured in the next personal mode, the blood pressure value determination condition stored in the data memory 19, that is, the pulse wave amplitude maximum value of the pulse wave amplitude value corresponding to each of the reference maximum blood pressure value and the reference minimum blood pressure value The maximum blood pressure value and the minimum blood pressure value are determined with high accuracy from the pressure value of the cuff 11 and the amplitude value of the pulse wave signal.

  The blood pressure value determination condition for the specific user in the personal mode described above is to calculate the ratio of the pulse wave amplitude corresponding to each of the reference maximum blood pressure value and the reference minimum blood pressure value to the maximum pulse wave amplitude value, and correct this ratio. The ratio of the pulse wave amplitude value corresponding to the maximum blood pressure value and the minimum blood pressure value to the maximum pulse wave amplitude value is a standard value (the ratio of the pulse wave amplitude corresponding to the maximum blood pressure value is the pulse wave amplitude maximum value). The provisional blood pressure value was calculated during calibration measurement as 60%, and the ratio of the pulse wave amplitude corresponding to the minimum blood pressure value was 70% of the maximum pulse wave amplitude value, and input using the reference blood pressure value input key 25 or 35 The difference from the reference blood pressure value may be used as the blood pressure value determination condition.

That is, during the calibration measurement, the temporary maximum blood pressure value (SYSx) and the minimum blood pressure value (DIAx) are measured using, for example, SYSx = 125 mmHg and DIAx = 76 mmHg using the standard values. Next, for example, when the reference maximum blood pressure value is SYSc = 135 mmHg and the reference minimum blood pressure value is DIAc = 84 mmHg, the difference between these reference blood pressure values and provisional blood pressure values is obtained. That is,
Maximum blood pressure correction value = SYSc-SYSx = 135-125 = 10 mmHg
Minimum blood pressure correction value = DIAc−DIAx = 76−84 = −8 mmHg

  Therefore, when the measurement is performed in the personal mode next time, the temporary maximum blood pressure value obtained by measuring the standard value (the ratio of the pulse wave amplitude corresponding to the maximum blood pressure value is 60% of the maximum pulse wave amplitude value) is obtained. The value obtained by adding 10 mmHg is taken as the measurement result. The minimum blood pressure value is a value obtained by subtracting 8 mmHg from a temporary minimum blood pressure value obtained by measurement with a standard value (the ratio of the pulse wave amplitude corresponding to the minimum blood pressure value is 70% of the maximum pulse wave amplitude value). The measurement result.

[E] Effects of the above-described embodiments Since the configuration is as described above, the following effects (1) to (3) are achieved according to the above-described embodiments.
(1) In the personal mode used by a specific user, the measurement condition for measuring the blood pressure value of the specific user and the blood pressure value determination condition for determining the blood pressure value of the specific user are the specific Since it is set based on the past measurement result of the user, for example, the pressurization value of the sphygmomanometer 10 at the time of decompression that measures the blood pressure value in the process of depressurizing the interior of the cuff 11 or the interior of the cuff 11 Since the pressure measurement start pressure value of the sphygmomanometer 30 during pressurization that measures the blood pressure value in the process of pressurization can be set according to the specific user, the measurement time of the blood pressure value can be shortened, and the pressurization value is Since it does not become excessive for a specific user, the burden on the specific user at the time of measurement can be reduced. Further, the depressurization speed of the slow depressurization in the measurement system sphygmomanometer 10 during depressurization, the pressurization speed of the slow pressurization in the measurement system sphygmomanometer 30 during pressurization, or the depressurization measurement system sphygmomanometer 10 and the measurement system sphygmomanometer 30 during pressurization. Since the blood pressure value determination condition in can be set according to the specific user, the blood pressure measurement accuracy can be improved.

The above-described effect will be further described in detail with reference to the drawings.
First, in the standard mode of the sphygmomanometer 10 at the time of reduced pressure, the range in which the pressure value can be measured without re-pressurization is “pressure value−10 mmHg”, the pressure condition is fixed every time. An example in which the measurement time is compared between a case where measurement is performed by pressurizing to a pressure value (for example, 180 mmHg) (FIG. 6) and a case where measurement is performed in the personal mode of the measurement system sphygmomanometer 10 during decompression (FIG. 5) is shown. .

  When a person with a maximum blood pressure value of 180 mmHg and a minimum blood pressure value of 100 mmHg measures, the slow depressurization rate in both modes is temporarily 5 mmHg. In this case, since the pressurization value is 180 mmHg in the standard mode, the measurement system sphygmomanometer 10 at the time of depressurization judges that pressurization is insufficient and performs repressurization, so the total measurement time is as shown in FIG. About 40 seconds. On the other hand, in the personal mode, as shown in FIG. 5, since the pressurization value is updated to 210 mmHg based on the past systolic blood pressure value of the specific user, the total measurement time is 35.2 seconds, The mode can shorten the measurement time by 4.8 seconds (12%). It is further advantageous if the user's systolic blood pressure is higher than this example.

  When the pressure value is a fixed value of 180 mmHg in the standard mode of the pressure measuring system sphygmomanometer 10, assuming that the range that can be measured without repressurization is “pressure value−10 mmHg” as described above, For users whose systolic blood pressure values are 170 mmHg to 150 mmHg, there are theoretical cases where the measurement time is shorter in the standard mode than in the personal mode. However, when a user with a systolic blood pressure value of 150 mmHg or less uses the sphygmomanometer 10 at the time of decompression, the measurement time is shortened again in the personal mode, and the difference (effect) increases as the systolic blood pressure value decreases. growing.

  For example, a person having a maximum blood pressure value of 100 mmHg and a minimum blood pressure value of 60 mmHg measures, and the slow pressure reduction rate is temporarily set to 5 mmHg per second. In this case, in the standard mode, as shown in FIG. 2, the total measurement time is 36 seconds, but in the personal mode, as shown in FIG. 4, the pressurization value is based on the past systolic blood pressure value of the specific user. Since it is updated to 130 mmHg, the total measurement time is 24 seconds, and the measurement time is 12 seconds (about 33%) in the personal mode. Considering that the sphygmomanometer is not necessarily used only by hypertensives but is also used by hypotensives, the effect of shortening the measurement time in measurement when the maximum blood pressure value is low is great. Moreover, the pressure value in the personal mode is lower and the burden on the user is less.

  A person with a maximum blood pressure value of 150 mmHg and a minimum blood pressure value of 100 mmHg measures the blood pressure in the standard mode and the personal mode using the measurement system sphygmomanometer 30 shown in FIG. 5 mmHg. At this time, in the standard mode, as shown in FIG. 8, the total measurement time is 30 seconds, but in the personal mode, as shown in FIG. Since the blood pressure is updated to 75 mmHg based on the hypertension value, the total measurement time is 22.8 seconds, and the measurement time is 7.2 seconds (about 24%) in the personal mode.

For example, in the case of the measurement system sphygmomanometer 10 during decompression, if the slow decompression speed is fixed regardless of the pulse rate of the user as in the standard mode, the measurement accuracy may be adversely affected. For example, a comparison is made between 120 beats / minute as an example when the pulse rate is fast and 40 beats / minute as an example when the pulse rate is slow. The difference between the maximum blood pressure value and the minimum blood pressure value is the same, for example, the maximum blood pressure value (SYS) = 120 mmHg, the minimum blood pressure value (DIA) = 90 mmHg (the difference is 30 mmHg), The number of pulse wave signals detected in the process of reducing the pressure between SYS and DIA when
Pulse rate x (SYS-DIA) / (Decompression rate x 60)
Therefore, at a pulse rate of 120 beats / minute, pulse wave data of 10 beats is detected in the process of reducing pressure between SYS and DIA, and at a pulse rate of 40 beats / minute, 3 beats are obtained in the process of reducing pressure between SYS and DIA. The pulse wave data is detected.

  With a slow pulse rate, such as a pulse rate of 40 beats / minute, even if one pulse wave detected before the systolic blood pressure value and one pulse wave data detected after the systolic blood pressure value are added The blood pressure value is determined from the 5-beat pulse wave data. Increasing the decompression speed and shortening the measurement time can alleviate the user's pain, but on the other hand, the number of data, which is an important information source for determining the blood pressure value, is reduced and highly accurate blood pressure measurement is performed. It is not preferable from the viewpoint.

  On the other hand, in the personal mode, based on the past user's pulse rate measurement results, for example, for a pulse rate of 40 beats / minute, the slow depressurization rate is updated so that the pressure is reduced at 3 mmHg / sec. By doing so, pulse wave data of about 7 beats is detected in the process of reducing the pressure between SYS and DIA. For this reason, if the pulse wave of 1 beat detected before the maximum blood pressure value and the pulse wave data of 1 beat detected after the minimum blood pressure value are added, the pulse wave data of 9 beats can be secured. Measurement can be performed without impairing measurement accuracy.

  (2) The pressurization value of the pressure measurement system sphygmomanometer 10 and the fine pressure pressurization start pressure value of the pressurization measurement system sphygmomanometer 30 are regarded as errors in the measurement in the personal mode. When the pressure start pressure value is determined to be inappropriate, it is set after returning to the initial setting value (standard value). It is possible to reliably carry out the measurement in the next personal mode.

  (3) Since the personal mode used by a specific user and the standard mode used by a person other than the specific user can be switched using the mode switch 24, the measurement of the specific user in the personal mode is possible. Without affecting the condition, the blood pressure value determination condition, or the measurement result of the specific user stored in the data memory 19, a person other than the specific user can select the standard mode and interrupt the same sphygmomanometer 10, 30 can be used to measure blood pressure.

[F] Other Embodiments In the setting of the blood pressure value determination condition in the personal mode of the measurement system pressure gauge 10 during decompression or the measurement system pressure gauge 30 during pressurization according to both the above embodiments, an input error or calibration of the reference blood pressure value is performed. Assuming that there is an abnormality in the measurement, if the entered reference blood pressure value is out of the measurement range, or if the reference minimum blood pressure value is higher than the reference maximum blood pressure value, etc. If the input reference blood pressure value and the measurement result at the time of calibration measurement have a difference of a predetermined value or more (for example, 50 mmHg), the CPU 17 determines that there is an abnormality and re-inputs the reference blood pressure value and re-measures the calibration. Err may be displayed on the display device 18 for prompting.

  Further, when a reference blood pressure value is input using the reference blood pressure value input key 35 (FIG. 11), the reference blood pressure value input key 35 may also be used as the memory call key 23 of FIG. 1 or FIG. That is, the memory call key 23 functions as a normal memory call key, but functions as a reference blood pressure value input key when the reference input key 26 is operated, and the standard value of the blood pressure value is displayed on the display device 18. The reference blood pressure value is set by operating the up arrow key 36 and the down arrow key 37 of the memory call key 23 that functions as the reference blood pressure value input key. By operating the confirmation key 28, the reference blood pressure value is confirmed, and the memory call key 23 returns to the original memory call key.

  Furthermore, the above-described reference blood pressure value may be input by communication from an external device (for example, a personal computer) by providing the measurement system sphygmomanometer 10 during decompression or the measurement system sphygmomanometer 30 during pressurization with a communication function. As a communication method, various forms such as USB and RS232C are possible.

  Further, this reference blood pressure value can be automatically stored in the data memory 19 without performing any special input. For example, conventionally, a K-sound sphygmomanometer has been devised that automatically detects Korotkoff sounds (K sounds) by detecting them with a microphone. This K-sound automatic sphygmomanometer is more accurate than the oscillometric sphygmomanometer, but it takes more time to measure than the oscillometric sphygmomanometer. In addition, the electronic circuit becomes complicated and the cost of the product increases. Because of this, oscillometric sphygmomanometers are widely used. However, the oscillometric sphygmomanometers 10 and 30 of the present embodiment are provided with the function of a K-sound sphygmomanometer, and the result measured with the K-sound is automatically stored and set as a reference blood pressure value. By performing the calibration measurement, the blood pressure value measurement conditions can be optimized in a short time, and therefore the blood pressure can be measured with higher accuracy by the personal mode of the oscillometric sphygmomanometers 10 and 30.

  In the personal mode of the measurement system sphygmomanometer 10 during decompression and the measurement system sphygmomanometer 30 during pressurization, a pressurization value when measuring a blood pressure value, a fine pressurization start pressure value, a slow depressurization speed, a slow pressurization speed, etc. One of the measurement conditions and the blood pressure value determination condition for determining the blood pressure value is set based on the past measurement result of the specific user in the personal mode, and the other is set to the standard value. Also good.

  Furthermore, in the personal mode of the measurement system sphygmomanometer 10 at the time of decompression and the measurement system sphygmomanometer 30 at the time of pressurization, the measurement conditions for measuring the blood pressure value and the blood pressure value are determined for each of a plurality of specific users. At least one of the blood pressure value determination conditions may be set based on a past measurement result of each specific user. In this case, a plurality of specific users can optimally measure blood pressure values using one sphygmomanometer 10 or 30. At this time, selection (instruction) of a specific user using the personal mode is executed by the specific user selection switch 38 shown in FIG. 1 or 7 or by wired or wireless communication from an external device such as a personal computer.

In the first embodiment of the sphygmomanometer according to the present invention, it is a block diagram showing the structure of a measurement system sphygmomanometer during decompression. 2 is a graph showing the pressure change in the cuff when the blood pressure is measured in the “standard mode” in which the pressurization value is a standard value in the measurement system sphygmomanometer during decompression of FIG. 1. 2 is a graph showing the relationship between a systolic blood pressure value, a diastolic blood pressure value, and a pulse wave amplitude in the measurement system sphygmomanometer during decompression. 2 is a graph showing a change in pressure in a cuff when a specific user whose maximum blood pressure value is 100 mmHg measures blood pressure in a personal mode in the measurement system sphygmomanometer during decompression. 2 is a graph showing a change in pressure in the cuff when a specific user whose maximum blood pressure value is 180 mmHg measures blood pressure in the personal mode in the measurement system sphygmomanometer during decompression. It is a graph which shows the pressure change in a cuff at the time of measuring the blood pressure by repressurization in the standard mode of the measurement system sphygmomanometer during decompression. In 2nd Embodiment of the blood pressure meter which concerns on this invention, it is a block diagram which shows the structure of the measurement system blood pressure meter at the time of pressurization. 8 is a graph showing a change in pressure in the cuff when the blood pressure is measured in the “standard mode” in which the slow pressure start pressure value is a standard value in the measurement system sphygmomanometer of FIG. 8 is a graph showing the relationship between the systolic blood pressure value, the diastolic blood pressure value, and the pulse wave amplitude in the pressurization measurement type sphygmomanometer of FIG. FIG. 8 is a graph showing a change in pressure in the cuff when a specific user having a minimum blood pressure value of 100 mmHg measures blood pressure in the personal mode in the pressurization measurement type sphygmomanometer of FIG. 7. It is a front view which shows the structure of the standard blood pressure value input key of FIG.1 and FIG.7.

Explanation of symbols

10 Measurement system sphygmomanometer during decompression 11 Cuff 12 Pressurizing pump (pressurizing means)
14 Pressure sensor (pressure detection means)
19 Data memory 24 Mode selection switch 30 Pressurization measuring system sphygmomanometer 38 Specific user selection switch

Claims (9)

A cuff wound around the artery passage portion of the user, and a pressurizing means for pressurizing the cuff, and a pressure detecting means for detecting the pressure in the cuff, the process of pressure slow depressurization or very low speed pressure to said cuff In the sphygmomanometer that discriminates the pulse wave signal superimposed on the pressure from the pressure detected by the pressure detection means, and determines and measures the blood pressure value from the pulse wave signal and the pressure value,
A personal mode used by a specific user is provided. In this personal mode, blood pressure for determining the blood pressure value of the specific user and the maximum blood pressure value and the minimum blood pressure value of the specific user are determined. at least one value determining condition is a shall be set based on the past measurement results of the specific user,
The blood pressure value determination condition is a ratio of each pulse wave amplitude value corresponding to each of a past reference maximum blood pressure value and a reference minimum blood pressure value, which is a reference for a specific user, to a pulse wave amplitude maximum value. Sphygmomanometer.   Among the above measurement conditions, the pressure value in the case of the pressure reduction measurement method that measures the blood pressure value in the process of depressurizing the inside of the cuff is the pressure value obtained by adding a predetermined value to the past systolic blood pressure value measurement result for the specific user The sphygmomanometer according to claim 1, wherein:   Among the above measurement conditions, the fine pressure pressurization start pressure value in the case of the pressurization measurement method that measures the blood pressure value in the process of finely pressurizing the inside of the cuff is a predetermined value from the past minimum blood pressure value measurement result for the specific user. The sphygmomanometer according to claim 1, wherein the sphygmomanometer is set to a subtracted pressure value.   Among the above measurement conditions, the slow depressurization rate in the case of the depressurization measurement method that measures the blood pressure value in the process of depressurizing the inside of the cuff, and the pressurization measurement method that measures the blood pressure value in the process of depressurizing the inside of the cuff very slowly The sphygmomanometer according to any one of claims 1 to 3, wherein at least one of the slow pressurization speeds is set based on a past pulse rate measurement result of a specific user.   5. The sphygmomanometer according to claim 4, wherein the slow depressurization speed or the slow pressurization speed is set in a relationship proportional to a past pulse rate of a specific user within a predetermined range. The blood pressure value determination condition includes the provisional blood pressure value calculated when the ratio of the pulse wave amplitude value corresponding to the maximum blood pressure value and the minimum blood pressure value to the maximum pulse wave amplitude value is set as a standard value, and a reference for a specific user. The sphygmomanometer according to claim 1, wherein the sphygmomanometer is a difference from a past reference blood pressure value. Pressurization value in the case of the pressure reduction measurement method that measures the blood pressure value in the process of depressurizing the inside of the cuff at a low pressure, and start of the fine pressure pressurization in the case of the pressure measurement method that measures the blood pressure value in the process of slightly pressurizing the inside of the cuff The pressure value is set by returning to the initial setting value when it is determined that the measurement in the personal mode is an error and the pressurization value or the fine pressure start pressure value is determined to be inappropriate. The sphygmomanometer according to any one of claims 1 to 6 . Standard mode used by people other than specific users. In this standard mode, the measurement conditions for measuring blood pressure values and the blood pressure value determination conditions for determining the maximum and minimum blood pressure values are set to the standard values. The sphygmomanometer according to any one of claims 1 to 7 , wherein the sphygmomanometer is configured to be switchable between a personal mode and the standard mode. In the personal mode, according to claim 1 for each of a plurality of persons for a particular user, at least one measurement condition and blood pressure value determining condition, characterized in that is set based on the past measurement results of each particular user The blood pressure monitor according to any one of 1 to 8 .

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