WO2008050786A1 - Sphygmomanomètre électronique - Google Patents

Sphygmomanomètre électronique Download PDF

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Publication number
WO2008050786A1
WO2008050786A1 PCT/JP2007/070693 JP2007070693W WO2008050786A1 WO 2008050786 A1 WO2008050786 A1 WO 2008050786A1 JP 2007070693 W JP2007070693 W JP 2007070693W WO 2008050786 A1 WO2008050786 A1 WO 2008050786A1
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WO
WIPO (PCT)
Prior art keywords
control value
pressure
control
correction amount
transformation
Prior art date
Application number
PCT/JP2007/070693
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English (en)
Japanese (ja)
Inventor
Kiyoshi Ito
Takashi Nakanishi
Original Assignee
Citizen Holdings Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citizen Holdings Co., Ltd. filed Critical Citizen Holdings Co., Ltd.
Priority to CN2007800401537A priority Critical patent/CN101528120B/zh
Publication of WO2008050786A1 publication Critical patent/WO2008050786A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/02141—Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits

Definitions

  • the present invention relates to an electronic blood pressure monitor, and more particularly to an electronic blood pressure monitor that measures blood pressure while controlling the pressure in a cuff.
  • the cuff pressure a type that measures the blood pressure while gradually reducing the pressure in the cuff (hereinafter referred to as the cuff pressure) to a pressure sufficiently higher than the systolic blood pressure.
  • the amount of exhaust gas is adjusted by adjusting the degree of opening of the exhaust valve connected to the cuff so that the depressurization speed of the cuff becomes a desired speed in the depressurization process.
  • the opening degree of the exhaust valve is constant, the air displacement in the cuff decreases when the pressure difference between the inside and the outside of the cuff is large and small. Therefore, if the exhaust is continued without adjusting the degree of opening of the exhaust valve, the depressurization rate gradually decreases.
  • a sphygmomanometer adapted to control a cuff decompression rate using a user's pulse during blood pressure measurement.
  • the pressure difference between each pulse wave is detected during blood pressure measurement, and the power supply to the excitation coil of the exhaust valve is reduced exponentially at each pulse wave detection, so that the blood pressure is reduced at a constant speed.
  • Gauge pressure drop rate control devices are known (see, for example, Patent Document 1).
  • the pressure difference between pulse waves is used for control by using the pressure difference immediately before the rise of each pulse wave to detect the pressure of an accurate air node to which the pulse wave is not superimposed. There is.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 6-47011 (Paragraph No. [0007])
  • Patent Document 2 Japanese Examined Patent Publication No. 3-49573 (Page 2, Column 4, Lines 14 to 23)
  • the present invention solves the above-mentioned problems of the prior art by modifying the control value for controlling the transformation means for changing the pressure in the cuff based on the pulse rate and the cuff transformation rate.
  • An object of the present invention is to provide an electronic sphygmomanometer capable of performing blood pressure measurement while changing the pressure in the cuff at a desired rate of transformation even when the pulse rate is low.
  • Another object of the present invention is to provide an electronic sphygmomanometer capable of performing blood pressure measurement without causing an increase in measurement time even when the pulse rate is small.
  • the electronic blood pressure monitor according to the invention of claim 1 comprises a cuff, a transforming means for varying the pressure in the cuff, and the pressure in the cuff.
  • Pressure detection means for detecting the pulse wave pulse wave detection means for detecting the pulse wave component contained in the output signal of the pressure detection means, and pulse wave valleys after the pulse wave is detected by the pulse wave detection means.
  • the present invention is characterized by comprising: transformation control means for controlling the transformation means within a predetermined period of time from any of the peaks.
  • the electronic blood pressure monitor according to claim 1, the pulse rate detected on the basis of the pulse wave detected by the pulse wave detection means.
  • a pulse rate calculating means for calculating a pulse rate calculating means, and the transformation control means is configured to calculate the number of pulses calculated by the pulse rate calculating means and the eye of the transformation speed of the pressure in the cuff detected by
  • a control value for controlling the transformation means is corrected to control the transformation means so that the transformation rate approaches a target transformation rate based on a speed deviation from a chart transformation speed.
  • the electronic blood pressure monitor according to claim 3 of the present invention is the electronic sphygmomanometer according to claim 2, wherein the transformation control means calculates transformation speed during transformation, and A pressure velocity deviation calculating means for calculating a deviation of the voltage transforming speed calculated by the voltage transforming speed calculating means from the target voltage transforming speed, a speed deviation calculated by the voltage transforming speed deviation calculating means, and Control value determination means for determining the correction amount of the control value based on the detected pulse rate, and control for correcting the control value based on the correction amount determined by the control value correction amount determination means And a value correcting means.
  • control value correction amount table further includes a control value correction amount table, wherein the control value correction amount determination means determines the control value correction amount based on the control value correction amount table.
  • control value correction amount table is provided in a plurality according to the pulse rate.
  • the control value correction amount table selection means may be further included to select a table corresponding to the pulse rate calculated by the pulse rate calculation means from the control value correction amount table.
  • the transformation means is an exhaust valve for reducing the pressure in the cuff.
  • the transformation control means is configured to correct the control value so as to open the exhaust valve as the pulse rate decreases.
  • the transformation means is a pump that raises the pressure in the cuff.
  • the transformation control means may modify the control value so as to increase the amount of drive of the pump as the pulse rate decreases.
  • the pressure reducing means since the pressure reducing means is controlled within a predetermined period from any force of the valley or peak of the pulse wave, the pressure reducing means which does not affect the valley value or peak value of the pulse wave can be obtained. It can control. Furthermore, based on the pulse rate and the pressure reduction rate of the cuff, the control value for controlling the pressure reduction means is corrected such that the pressure reduction rate approaches the target pressure reduction rate. Also, based on the pulse rate and the cuff pressurization speed, the control value for controlling the pressurization means is corrected such that the pressurization speed approaches the target pressurization speed.
  • the cuff pressure can be adjusted at the desired transformation speed even if the pulse rate is low, by modifying the control value for controlling the transformation means for changing the cuff pressure. The effect is that blood pressure can be measured while changing it. In addition, even when the pulse rate is small, it is possible to perform blood pressure measurement without lengthening the measurement.
  • FIG. 1 is a block diagram showing an entire configuration of an electronic blood pressure monitor according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing a configuration of pressure reduction control means of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • FIG. 3 is a view showing an example of a control value correction amount tape of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • FIG. 4 is a view showing an example of a control value correction amount tape of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • FIG. 5 is a view showing an example of a control value correction amount tape of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • FIG. 6 is a flow chart showing a blood pressure measurement procedure of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • FIG. 7 is a flow chart showing a pressure reduction control procedure of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • Fig. 8 shows the relationship between time and pressure in the cuff by comparing the presence or absence of correction of the control value. It is a sex figure.
  • FIG. 9 is a block diagram showing an entire configuration of an electronic blood pressure monitor according to a second embodiment of the present invention.
  • FIG. 10 is a block diagram showing a configuration of pressure control means of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • FIG. 11 is a view showing an example of a control value correction amount table of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • FIG. 12 is a view showing an example of a control value correction amount table of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • FIG. 13 is a view showing an example of a control value correction amount table of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • FIG. 14 is a flowchart showing a blood pressure measurement procedure of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • FIG. 15 is a flowchart showing a pressure control procedure of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • FIG. 1 is a block diagram showing an entire configuration of an electronic blood pressure monitor according to a first embodiment of the present invention.
  • the electronic sphygmomanometer comprises a cuff 1, a pressure detection means 2, a pressure means 3, a pressure reduction means 4, a display means 5, an operation means 6, and a microcomputer (hereinafter referred to as a microcomputer) 7.
  • a microcomputer hereinafter referred to as a microcomputer 7.
  • the cuff 1, the pressure detection means 2, the pressure means 3 and the pressure reduction means 4 are connected by a tube 8.
  • the pressure detection means 2 detects the pressure in the cuff 1.
  • the pressure detection means 2 is configured by, for example, a pressure sensor.
  • the pressurizing means 3 pressurizes the cuff 1 based on the output signal of the microcomputer 7.
  • the pressurizing means 3 is constituted by, for example, a pump for delivering a fluid such as air (hereinafter, simply referred to as air or the like) to the pressure fan 1! /.
  • the pressure reducing means 4 reduces the pressure in the cuff 1 based on the output signal of the microcomputer 7.
  • the pressure reducing means 4 is composed of, for example, an exhaust valve that exhausts air or the like in the cuff 1 at a low speed and rapidly.
  • the exhaust valve is fully opened at the end of the blood pressure measurement based on the output signal of the microcomputer 7, and the pressure in the cuff 1 is rapidly reduced.
  • the pressure reducing means 4 may be configured to have a low speed exhaust valve that exhausts air or the like in the cuff 1 at a high speed, and a rapid exhaust valve that rapidly exhausts the air.
  • the display means 5 displays the systolic and diastolic blood pressure values determined by the microcomputer 7.
  • the display unit 5 includes, for example, a liquid crystal display panel and a control unit that performs display control of the liquid crystal display panel.
  • the display means 5 may be configured to display a pulse rate or time.
  • the operation means 6 has various buttons and switches operated by the user at the time of blood pressure measurement. For example, a measurement start button also serving as a power button, a user ID button for inputting a user identifier, a switch for setting a pressure value, a memory button for storing measurement results, etc. are provided. ing.
  • the microcomputer 7 executes the blood pressure measurement program to realize the pressurization control means 11, the decompression control means 12, the blood pressure value determination means 13, the pulse rate calculation means 14 and the pulse wave detection means 15.
  • the pressure control means 11 controls the drive of the pump constituting the pressure means 3 based on the pressure value in the cuff 1 detected by the pressure detection means 2. For example, when the pressure in the cuff 1 reaches a predetermined pressure during pressurization of the cuff 1, the pressurization control means 11 stops the pump.
  • the pulse wave detection means 15 detects a pulse wave component contained in the output signal of the pressure detection means 2 when the cuff 1 is slowly depressurized.
  • the pulse rate calculating means 14 calculates the pulse rate based on the output signal of the pulse wave detecting means 15.
  • the blood pressure value determination means 13 determines the highest blood pressure value and the lowest blood pressure value, for example, by a known blood pressure determination algorithm by oscillometric method based on the pulse wave component detected by the pulse wave detection means 15. The determined blood pressure value is displayed on the display means 5. Further, when the blood pressure value determination means 13 determines the blood pressure value, the pressure reduction control means 12 is notified of the end of the measurement in order to make the exhaust valve fully open.
  • the decompression control means 12 After completion of pressurization of the cuff 1, the decompression control means 12 opens the exhaust valve to exhaust air or the like at a low speed from the cuff 1.
  • the depressurization control means 12 opens the exhaust valve so that the depressurization rate approaches the target depressurization rate based on the depressurization rate of the pressure in the cuff 1 detected by the pressure detection means 2 during the slow depressurization of the cuff 1. Control the degree.
  • the pressure reducing control means 12 controls the exhaust valve so that the pressure reducing speed approaches the target pressure reducing speed further based on the pulse rate and the pressure reducing speed of the cuff pressure calculated by the pulse rate calculating means 14. Correct the control value to control the degree of opening.
  • the pressure in the cuff 1 is detected by the pressure detection means 2 at any time based on the sampling cycle.
  • the value used for pressure reduction rate control (pressure value in the cuff 1) is the pulse wave component by the pulse wave detection means 15 In particular, use the pressure value immediately before the rise of the pulse wave after detection of. This is to accurately detect the pressure in the cuff 1 by using the pulse wave component superimposed and using the pressure value.
  • the pressure reduction control means 12 After the pulse wave component is detected by the pulse wave detection means 15, the correction of the control value of the pressure means 4 (the opening degree of the exhaust valve) and the control of the pressure reducing means 4 are synchronized with the pulse wave.
  • the correction of the control value of the pressure reduction control means 12 and the control of the pressure reduction means 4 are performed each time the pulse wave is detected by the pulse wave detection means 15 after the pulse wave is detected by the pulse wave detection means 15.
  • the pressure reduction control means 12 fully opens the exhaust valve in response to the notification from the blood pressure value determination means 13 at the end of the blood pressure measurement.
  • the exhaust valve is driven by a pulse width modulated drive signal.
  • a control value for controlling the opening degree of the exhaust valve is represented by a digital value corresponding to the pulse width.
  • the pressure reduction control means 12 controls the opening degree of the exhaust valve by changing this digital value to change the duty of the drive signal of the exhaust valve.
  • the exhaust valve of the pressure reducing means 4 has a smaller opening degree as the control value is larger or a digital value, and the smaller the control value is, the smaller the digital value is. Open wide Therefore, if the control value is large, the depressurization rate of the cuff 1 decreases, and if the control value is small, the depressurization rate of the cuff 1 increases. For example, if the control value is zero, the exhaust valve is fully opened and the cuff 1 is rapidly exhausted.
  • FIG. 2 is a block diagram showing the configuration of the pressure reduction control means 12.
  • the pressure reduction control means 12 includes a pressure reduction rate calculation means 21, a pressure reduction speed deviation calculation means 22, a control correction amount table selection means 23, a control value correction amount table 24, and a control value correction amount determination means 25.
  • the depressurization speed calculation means 21 calculates the depressurization speed during depressurization of the cuff 1.
  • the pressure reduction rate is determined, for example, by differentiating the pressure value in the cuff 1 detected by the pressure detection means 2.
  • the depressurization speed deviation calculation means 22 calculates a deviation (velocity deviation) of the depressurization speed calculated by the depressurization speed calculation means 21 from the target depressurization speed. The speed deviation is reduced by It is obtained by subtracting the target pressure reduction rate from the pressure rate.
  • the control value correction amount table 24 defines the relationship between the pulse rate and speed deviation and the correction amount of the control value.
  • the control value correction amount table 24 is described in the blood pressure measurement program.
  • 3 to 5 are diagrams showing an example of the control value correction amount table. Not particularly limited 1S Here, as shown in FIGS. 3 to 5, it is assumed that three control value correction amount tables 24a, 24b, 24c are provided in accordance with the pulse rate range.
  • the control value correction amount table A24a shown in FIG. 3, for example, is a table selected when the pulse rate is more than 60 beats / minute.
  • the control value correction amount table B24b shown in FIG. 4 is a table selected, for example, when the pulse rate is more than 40 ⁇ / min and not more than 60 ⁇ / min.
  • the control value correction amount table C24c shown in FIG. 5 is a table selected, for example, when the pulse rate is 40 ⁇ / min or less. Let the velocity deviation be ⁇ .
  • control value correction amount table A24a for example, correction of control values in the case of [ ⁇ V ⁇ 2.0] and [2 ⁇ 0 ⁇ AV ⁇ 1.5].
  • the quantities are -4 and 3 respectively.
  • the correction amount of the control value in the case of [1.5 ⁇ AV ⁇ 2.0] and [2 ⁇ 0 ⁇ ]] is +3 and +4, respectively.
  • the control value increases the opening degree of the exhaust valve and increases the depressurization speed as the depressurization speed of the cuff 1 becomes smaller than the target depressurization speed, the control value is reduced. Yes, it is prescribed. Conversely, if the pressure reduction rate of the cuff 1 becomes larger than the target pressure reduction rate, the correction value of the control value is specified so as to make the control value larger in order to reduce the opening degree of the exhaust valve and decrease the pressure reduction rate. It is done! The same applies to the control value correction amount table B24b and the control value correction amount table C24c.
  • control value correction amount table B 24 b for example, [ ⁇ V ⁇ 2.
  • the correction amount of the control value in the case of 0] is 5. Furthermore, as shown in FIG. 5, in the control value correction amount table C24c, for example, the correction amount of the control value in the case of [ ⁇ ⁇ 2 ⁇ 0] is ⁇ 6. Thus, the correction amount of the control value is defined so that the control value becomes smaller as the pulse rate becomes smaller, even if the speed deviation ⁇ ⁇ is the same. The reason is as follows.
  • the control value correction by the pressure reduction control means 12 and the pressure reduction control means 12 The control of the pressure reducing means 4 is carried out each time the pulse wave is detected by the pulse wave detection means 15 after the pulse wave is detected by the pulse wave detection means 15. Therefore, when the pulse rate is high, the interval from changing the control value to the next one is short. Therefore, even if the opening degree of the exhaust valve is fixed between the change of the control value and the change to the next value, the change of the next control value can be made while the depressurization speed is not much lower than the desired speed. Because the timing comes, the decompression speed does not deviate too much from the desired speed.
  • the pulse rate is low, the interval from changing the control value to the next one is long, so it is necessary to reduce the pressure before changing the control value to the next value.
  • the speed will drop more than the desired speed.
  • the opening degree of the exhaust valve may be increased. Therefore, the smaller the pulse rate, the smaller the control value is, and the larger the opening of the exhaust valve.
  • control value correction amount table A 24 a the control value correction amount table B 24 b, and the control value correction amount table C 24 c
  • the correction amount of the control value when the speed deviation ⁇ is another value is shown in FIGS. As shown in, the listing is omitted here. Further, the number of control value correction amount tables 24, the way of setting the range of pulse rate, the way of setting the range of speed deviation ⁇ v in each table, and the like can be changed variously.
  • the control value correction amount table selection means 23 uses the pulse number calculation means 14 out of the three control value correction amount tables ⁇ 24a, the control value correction amount table B24b and the control value correction amount table C24c described above. A table corresponding to the calculated pulse rate is selected.
  • the control value correction amount determination means 25 refers to the control value correction amount table 24 selected by the control value correction amount table selection means 23 and based on the speed deviation calculated by the pressure reduction speed deviation calculation means 22! The amount of correction of the control value is determined.
  • the control value correction means 26 corrects the control value based on the correction amount determined by the control value correction amount determination means 25. For example, the control value correction means 26 adds the correction amount determined by the control value correction amount determination means 25 to the current control value to obtain a new control value. Then, the control value correction means 26 controls the opening degree of the exhaust valve of the pressure reducing means 4 based on the control value. When the control value correction means 26 receives the measurement end notification from the blood pressure value determination means 13 , Exhaust valve fully open.
  • FIG. 6 is a flow chart showing a procedure of the blood pressure measurement procedure of the electronic blood pressure monitor according to the first embodiment of the present invention after the start of pressure reduction.
  • a series of procedures shown in FIG. 6 are started when the pressure in the cuff 1 reaches a predetermined pressure while the cuff 1 is pressurized.
  • the depressurization control means 12 first reads the control initial value (step Sl). This control initial value is described in the blood pressure measurement program.
  • the pressure reduction control means 12 sets the control initial value to the first control value (step S2).
  • step S3 the blood pressure is measured by a known blood pressure determination algorithm.
  • the exhaust valve of the depressurizing means 4 is set by the depressurization control means 12 to an opening degree corresponding to the control value (control initial value) set in step S 2.
  • control initial value the control value set in step S 2.
  • the decompression control means 12 executes a well-known decompression control algorithm, and based on the pressure value in the cuff 1 detected by the pressure detection means 2 and the pulse rate calculated by the pulse rate calculation means 14.
  • the pressure reduction control described later is performed (step S5).
  • the process returns to step S3 to measure the blood pressure.
  • Steps S3 to S5 are repeated, and when the systolic blood pressure value and the diastolic blood pressure value are determined by the blood pressure value determination means 13, it is judged that the blood pressure measurement is finished (step S4: Yes).
  • FIG. 7 is a flowchart showing a pressure reduction control procedure of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • the pressure reduction rate of the cuff 1 is calculated by the pressure reduction rate calculating means 21 (step S11).
  • the speed deviation ⁇ is calculated by the pressure reduction speed deviation calculation means 22 (step S12).
  • the pulse rate calculating means 14 calculates the pulse rate, and determines whether the pulse rate has been calculated (step S13).
  • step S 13: Yes it is judged by the control value correction amount table selection means 23 whether the pulse rate is more than 60 ⁇ / min or not (step S 14). If the pulse rate is more than 60 beats per minute (step S 14: Yes), the control value correction amount table is The control value correction amount table A24a is selected by the selection means 23 (step S15). If the pulse rate can not be calculated at step S13! / (Step S13: No), the control value correction table A24a is also selected (step S15).
  • step S 14 when the pulse rate is 60 ⁇ / min or less (step S 14: No), the control value correction amount table selection unit 23 measures that the pulse rate is more than 40 ⁇ / min and 60 ⁇ It is determined whether it is less than 1 minute (step S16). If the pulse rate is in this range (step S16: YES), the control value correction amount table selection means 23 selects the control value correction amount table B 24b (step S17). Further, if the pulse rate is 40 ⁇ / min or less (step S16: No), the control value correction amount table selection means 23 selects the control value correction amount table C24c (step S18).
  • step SI7 or step SI8 the control value correction amount determination means 25 determines step S15, step S17 or step S17 based on the velocity deviation ⁇ calculated in step S12.
  • the correction amount of the corresponding control value is read from the control value correction amount table 24 selected in 18 (step S19).
  • the control value correction means 26 reflects the correction amount read out in step S19 on the current control value and newly sets it as a control value (step S20). Then, the series of pressure reduction control processing shown in FIG. 7 ends.
  • FIG. 8 is a characteristic diagram showing an example of the effect when the pulse rate is set to 40 and the control value is corrected, and shows the relationship between time and the pressure in the cuff 1.
  • “No control value correction” means that the opening degree of the exhaust valve is controlled based only on the pressure reduction speed of the cuff 1 without performing correction according to the pulse rate.
  • “With control value correction” means that the control value has been corrected according to the pulse rate according to the flowchart shown in FIG.
  • FIG. 9 is a block diagram showing an entire configuration of an electronic blood pressure monitor according to a second embodiment of the present invention.
  • the electronic sphygmomanometer includes a cuff 1, a pressure detection means 2, a pressure means 3, and a sudden change.
  • a quick exhaust means 9, a display means 5, an operation means 6 and a microcomputer (hereinafter referred to as a microcomputer) 10 are provided.
  • the cuff 1, the pressure detection means 2, the pressure means 3 and the rapid evacuation means 9 are connected by a tube 8.
  • the second embodiment is to measure the blood pressure while the cuff 1 is pressurized.
  • the rapid evacuation means 9 rapidly evacuates the air, etc. in the engine 1 based on the output signal of the microcomputer 10 at the end of the blood pressure measurement.
  • the rapid exhaust means 9 is constituted, for example, by an exhaust valve.
  • the pressure detection means 2, the pressure means 3, the display means 5 and the operation means 6 are the same as in the first embodiment.
  • the microcomputer 10 executes the blood pressure measurement program to realize the pressurization control unit 11, the blood pressure value determination unit 13, the pulse rate calculation unit 14, the pulse wave detection unit 15, and the exhaust control unit 16.
  • the pulse wave detection means 15 detects the pulse wave component contained in the output signal of the pressure detection means 2 when the cuff 1 is pressurized.
  • the pulse rate calculating means 14 is the same as that of the first embodiment.
  • the blood pressure value determination means 13 determines the systolic blood pressure value and the diastolic blood pressure value as in the first embodiment, and outputs a pressurization stop command to the pressurization control means 11 and the exhaust valve 16 to the exhaust control means 16. Output the fully open command.
  • the exhaust control means 16 fully opens the exhaust valve when it receives the full open command from the blood pressure value determination means 13.
  • the pressurization control means 11 controls the pressurization means 3 based on the pressurization speed of the pressure in the cuff 1 detected by the pressure detection means 2 so that the pressurization speed approaches the target pressurization speed.
  • Drive control of the pump to be configured.
  • the pressurization control means 11 further approaches the target pressurization speed based on the pressurization rate of the pulse rate and the cuff pressure calculated by the pulse rate calculation means 14. Correct the control value to control the drive amount of the pump.
  • the detection of the pressure in the cuff 1 by the pressure detection means 2 is performed at any time based on the sampling cycle.
  • the value used for pressure pressurization control (pressure value in the cuff 1) is detected by the pulse wave detection means 15
  • the correction of the control value of the pressure means 3 (pump) by the pressure control means 11 and the control of the pressure means 3 are synchronized with the pulse wave after the pulse wave component is detected by the pulse wave detection means 15. From the valley or peak of the pulse wave within a predetermined period In the present embodiment, in particular, it is performed at the fall of the pulse wave after the detection of the peak value of the pulse wave.
  • the pump is driven by a pulse width modulated drive signal, without particular limitation!
  • a control value for controlling the amount of driving of the pump is represented by a digital value corresponding to the width of the notch.
  • the pressurization control means 11 controls the amount of drive of the pump by changing this digital value to change the duty of the drive signal of the pump.
  • the drive amount pumping amount increases as the control value increases, and the digital value, and the drive amount increases as the control value decreases. decrease. Therefore, if the control value is large, the pressurization speed of the cuff 1 is high, and if the control value is small, the pressurization speed of the cuff 1 is low.
  • FIG. 10 is a block diagram showing a configuration of pressure control means.
  • the pressure control means 11 includes a control value correction amount table selection means 23, a control value correction amount table 24, a control value correction amount determination means 25, a control value correction means 26, and a pressure speed calculation means 27. And pressure velocity deviation calculating means 28.
  • the pressurization speed calculation means 27 calculates the pressurization speed during pressurization of the cuff 1.
  • the pressurizing speed is obtained, for example, by differentiating the pressure value in the cuff 1 detected by the pressure detecting means 2.
  • the pressurizing speed deviation calculating means 28 calculates a deviation (velocity deviation) of the pressurizing speed calculated by the pressurizing speed calculating means 27 from the target pressurizing speed. The speed deviation is determined by subtracting the target pressurization speed from the current pressurization speed.
  • the control value correction amount table 24 is the same as that of the first embodiment. However, while Embodiment 1 is the correction of the control value of the exhaust valve, Embodiment 2 is the correction of the control value of the pump. Therefore, the correction amount of the control value is different from that of the first embodiment.
  • 11 to 13 are diagrams showing an example of the control value correction amount table. Although not particularly limited, it is assumed here that three control value correction amount tables 24d, 24e, 24f are provided according to the pulse rate range, as shown in FIGS.
  • the control value correction amount table D24d shown in FIG. 11, for example, is a table selected when the pulse rate is more than 60 beats / minute.
  • the control value correction amount table E24e shown in FIG. 12, for example, is a table selected when the pulse rate is more than 40 ⁇ / min and not more than 60 ⁇ / min.
  • the control value correction amount table F24f shown in FIG. 13 is a table selected, for example, when the pulse rate is 40 ⁇ / min or less.
  • the correction amount of the control value in the case of [AV ⁇ 2.0] and [2 ⁇ 0 ⁇ AV ⁇ 1.5] is , +4 and +3, respectively.
  • the correction values of the control value in the case of [1.5 ⁇ AV ⁇ 2.0] and [2 ⁇ 0 ⁇ ] are 3 and 4, respectively.
  • the correction amount of the control value is set to a larger value in order to increase the driving amount of the pump and increase the pressurizing speed as the pressurizing speed of the cuff 1 becomes smaller than the target pressurizing speed. It is prescribed to do.
  • the correction value of the control value so as to make the control value smaller in order to reduce the driving amount of the pump and make the pressurization speed smaller.
  • the correction amount of the control value in the case of [ ⁇ V ⁇ 2.0] is +5.
  • the correction amount of the control value in the case of [ ⁇ ⁇ 2.0] is +6.
  • the pressurization speed is reduced.
  • the correction of the control value by the pressurization control means 11 and the control of the pressurization means 3 by the pressurization control means 11 are performed after the pulse wave is detected by the pulse wave detection means 15. It is performed each time a pulse wave is detected by the means 15. Therefore, when the pulse rate is high, the interval between the change of the control value and the next change is short. Therefore, even if the driving amount of the pump is fixed while changing the control value to change to the next value, the next control can be performed while the pressurizing speed is not much lower than the desired speed. Since the timing for changing the value comes, the calo pressure speed does not deviate much from the desired speed.
  • the pulse rate when the pulse rate is low, the interval from changing the control value to the next one is long. Therefore, it is necessary to add between the change of the control value and the next one.
  • the pressure rate will drop below the desired rate.
  • the amount of driving of the pump may be increased. Therefore, as the pulse rate decreases, the control value is corrected to be larger, and the amount of driving of the pump is increased.
  • the control value correction amount table D24d, the control value correction amount table E24e, and the control value correction amount table F24f the control value correction amount when the speed deviation ⁇ is another value is shown in FIG. 11 to FIG. As shown, it is omitted to list here.
  • Control value correction amount table selection means 23 selects pulse number calculation means 14 from among the three control value correction amount tables D24d, control value correction amount table E24e and control value correction amount table F24f described above. A table corresponding to the calculated pulse rate is selected.
  • the control value correction amount determination means 25 refers to the control value correction amount table 24 selected by the control value correction amount table selection means 23 and based on the speed deviation calculated by the pressurization speed deviation calculation means 28! The amount of correction of the control value is determined.
  • control value correction means 26 corrects the control value to obtain a new control value.
  • the control value correction means 26 controls the drive amount of the pump of the pressure means 3 based on the control value. Further, when the control value correction means 26 receives the pressurization stop command from the blood pressure value determination means 13, it stops driving of the pump.
  • FIG. 14 is a flow chart showing a procedure after the start of pressurization in a blood pressure measurement procedure of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • the pressurization control means 11 first reads the control initial value (step S31). This control initial value is described in the blood pressure measurement program. Next, pressure control means 11 sets the control initial value to the first control value (step S32).
  • step S33 the blood pressure is measured by a known blood pressure determination algorithm.
  • the pump of the pressurization means 3 is set by the pressurization control means 11 to pressure-feed air or the like corresponding to the control value (control initial value) set in step S32.
  • the control value control initial value
  • the pressure control means 11 executes a well-known pressure control algorithm, and the pressure value in the cuff 1 detected by the pressure detection means 2 and the pulse rate calculated by the pulse rate calculation means 14 The pressure control to be described later is performed based on (step S35). Then, the process returns to step S33 to measure the blood pressure. Steps S33 to S35 are repeated, and when the systolic blood pressure value and the diastolic blood pressure value are determined by the blood pressure value determination means 13, it is determined that the blood pressure measurement is finished (step S34: Yes) and the pump of the pressurizing means 3 is stopped. The exhaust valve of rapid exhaust means 9 is opened to rapidly exhaust the cuff 1, and the series of pressure treatment shown in FIG. 14 is completed.
  • FIG. 15 is a flowchart showing a pressure control procedure of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • the pressurization speed of the cuff 1 is calculated by the pressurization speed calculation means 27 (step S41).
  • the velocity deviation ⁇ is calculated by the pressure velocity deviation calculating means 28 (step S42).
  • the pulse rate calculating means 14 calculates the pulse rate, and determines whether the pulse rate has been calculated (step S43).
  • step S43: Yes it is determined by the control value correction amount table selection means 23 whether the pulse rate is more than 60 / min (step S44). . If the number of pulses is more than 60 beats / minute (step S44: Yes), the control value correction amount table selection means 23 selects the control value correction amount table D24d (step S45). Also in the case where the pulse rate can not be calculated in step S43! / (Step S43: No), the control value correction table D24d is selected (step S45).
  • step S44 determines that the pulse rate is more than 40 ⁇ / min and 60 ⁇ / It is determined whether it is less than a minute (step S46). If the pulse rate is in this range (step S46: Y For the es), the control value correction amount table selection means 23 selects the control value correction amount table E 24e (step S47). Further, when the pulse rate is 40 ⁇ / min or less (step S46: No), the control value correction amount table selection means 23 selects the control value correction amount table F24f (step S48).
  • step S50 the series of pressure control processing shown in FIG. 15 ends.
  • the exhaust valve of the pressure reducing means 4 is arranged such that the pressure reducing speed approaches the target pressure reducing speed based on the velocity deviation between the pulse rate and the pressure reducing speed of the cuff 1.
  • the control value for controlling is corrected.
  • the pump of the pressure unit 3 is controlled so that the pressure velocity approaches the target pressure velocity. The control value is corrected. Therefore, even when the pulse rate is low, the pressure in the cuff 1 can be measured while changing the pressure at a desired pressure reduction rate or pressure rate. In addition, even when the pulse rate is small, it is possible to perform blood pressure measurement without lengthening the measurement.
  • the exhaust valve force S pulse width is driven by the modulated drive signal
  • the pump is driven by the pulse width modulated drive signal.
  • the exhaust valve and pump may be configured to be driven by another driving method! / ⁇ .
  • the electronic sphygmomanometer according to the present invention is useful for an electronic sphygmomanometer of a type that measures blood pressure while controlling the cuff transformation speed, and in particular, the pulse of the user detected during blood pressure measurement.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Physiology (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Ophthalmology & Optometry (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

Des tables de correction (24) de valeur régulée définissant les relations entre la fréquence du pouls, la différence entre le taux de réduction de pression du brassard et le taux de réduction de pression cible, et la correction de la valeur régulée permettant de réguler l'ouverture de la valve d'échappement d'un moyen réducteur de pression (4) sont établies en fonction de la fréquence du pouls. Un moyen détecteur de pression (2) détecte la pression du brassard. Un moyen de calcul (21) du taux de réduction de pression détermine la différence du taux de réduction de pression. Un moyen de calcul (14) de la fréquence du pouls calcule la fréquence du pouls. Un moyen de sélection (23) de table de correction de valeur régulée sélectionne une table de correction (24) de valeur régulée en fonction de la fréquence du pouls. Un moyen de détermination (25) de correction de valeur régulée détermine la correction à ajouter à la valeur régulée en fonction de la différence du taux de réduction de pression par référence à la table de correction (24) de valeur régulée sélectionnéE. Un moyen de correction (26) de valeur régulée ajoute la correction à la valeur régulée courante et utilise la somme comme nouvelle valeur régulée.
PCT/JP2007/070693 2006-10-27 2007-10-24 Sphygmomanomètre électronique WO2008050786A1 (fr)

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JP2006292358A JP4153543B2 (ja) 2006-10-27 2006-10-27 電子血圧計

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011104269A (ja) * 2009-11-20 2011-06-02 Omron Healthcare Co Ltd 血圧測定装置
US10408210B2 (en) * 2016-02-03 2019-09-10 Microjet Technology Co., Ltd. Driving circuit for piezoelectric pump and control method thereof
JP2021513386A (ja) * 2018-02-12 2021-05-27 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． ウェアラブルカフの制御

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5718189B2 (ja) * 2011-08-23 2015-05-13 シチズンホールディングス株式会社 電子血圧計
JP5933301B2 (ja) * 2012-03-13 2016-06-08 テルモ株式会社 血圧計及びその制御方法
JP6689101B2 (ja) * 2016-03-01 2020-04-28 テルモ株式会社 血圧計

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JPS58127634A (ja) * 1982-01-25 1983-07-29 コーリン電子株式会社 オシロメトリック式自動血圧測定装置
JPS58188428A (ja) * 1982-04-27 1983-11-02 オムロン株式会社 血圧計
JPS61122840A (ja) * 1984-11-19 1986-06-10 株式会社エー・アンド・ディ カフ圧力制御装置
JPH10314132A (ja) * 1997-05-16 1998-12-02 Omron Corp 血圧測定装置

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Publication number Priority date Publication date Assignee Title
CN100500085C (zh) * 2000-01-14 2009-06-17 微生命知识产权股份有限公司 血压测量装置
JP4752259B2 (ja) * 2004-12-10 2011-08-17 オムロンヘルスケア株式会社 電子血圧計および血圧測定システム

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Publication number Priority date Publication date Assignee Title
JPS58127634A (ja) * 1982-01-25 1983-07-29 コーリン電子株式会社 オシロメトリック式自動血圧測定装置
JPS58188428A (ja) * 1982-04-27 1983-11-02 オムロン株式会社 血圧計
JPS61122840A (ja) * 1984-11-19 1986-06-10 株式会社エー・アンド・ディ カフ圧力制御装置
JPH10314132A (ja) * 1997-05-16 1998-12-02 Omron Corp 血圧測定装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011104269A (ja) * 2009-11-20 2011-06-02 Omron Healthcare Co Ltd 血圧測定装置
US10408210B2 (en) * 2016-02-03 2019-09-10 Microjet Technology Co., Ltd. Driving circuit for piezoelectric pump and control method thereof
JP2021513386A (ja) * 2018-02-12 2021-05-27 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． ウェアラブルカフの制御
JP7252241B2 (ja) 2018-02-12 2023-04-04 コーニンクレッカ フィリップス エヌ ヴェ ウェアラブルカフの制御

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CN101528120A (zh) 2009-09-09

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