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WO2008050634A1 - Sphygmomanomètre électronique - Google Patents

Sphygmomanomètre électronique Download PDF

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Publication number
WO2008050634A1
WO2008050634A1 PCT/JP2007/070169 JP2007070169W WO2008050634A1 WO 2008050634 A1 WO2008050634 A1 WO 2008050634A1 JP 2007070169 W JP2007070169 W JP 2007070169W WO 2008050634 A1 WO2008050634 A1 WO 2008050634A1
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WIPO (PCT)
Prior art keywords
pressure
initial value
pressure reduction
control
control initial
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2007/070169
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English (en)
Japanese (ja)
Inventor
Kiyoshi Ito
Takashi Nakanishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Holdings Co Ltd
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 CN2007800383261A priority Critical patent/CN101522098B/zh
Publication of WO2008050634A1 publication Critical patent/WO2008050634A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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 for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • 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
    • A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds

Definitions

  • the present invention relates to an electronic sphygmomanometer, and more particularly to an electronic sphygmomanometer that measures blood pressure during pressure reduction in a cuff.
  • Some electronic sphygmomanometers measure blood pressure while gradually reducing the pressure in the cuff (hereinafter referred to as the cuff pressure).
  • the pressure in the cuff can be reduced to a desired speed by controlling the degree of opening of the exhaust valve, which is usually an electromagnetic valve connected to the cuff, when air in the cuff is exhausted. It is configured to be Generally, the closing force of the solenoid valve is determined by the control value that controls the opening of the solenoid valve and the power supply voltage.
  • control initial value is a user with an average physique who, for example, winds the cuff around the upper arm with good adjustment, and increases the pressure to a predetermined cuff pressure at the rated voltage. It is fixed at a value that is optimal in the condition.
  • a control device for a constant-speed exhaust device that measures the pressure in a pressurized space such as an arm band and displaces a piezoelectric element operating member for opening and closing a valve based on the measurement signal.
  • a sphygmomanometer using this control device pumps air to the armband, and when the pressure in the armband reaches a set value, the piezoelectric element actuating member is displaced to form a gap between the valve and the exhaust port.
  • the air on the side of the armband is configured to be exhausted at a preset speed. Further, the pressure in the armband is measured, and the opening degree of the valve is adjusted so that the exhaust speed becomes a set value by feedback control (see, for example, Patent Document 1).
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2-211121 (page 4 left lower column, line 8 to line 17)
  • the present invention updates the initial control value of a solenoid valve or the like based on the pressure reduction rate at the previous blood pressure measurement etc.
  • An object of the present invention is to provide an electronic sphygmomanometer capable of preventing pulse wave detection leakage immediately after the start of pressure reduction and lengthening of measurement by starting pressure reduction of the cuff at a speed.
  • the electronic blood pressure monitor according to the invention of claim 1 comprises a cuff, a pressure reducing means for reducing the pressure in the cuff, and a control value. It is detected by the pressure detection means when the pressure in the cuff is reduced by the pressure reduction control means for controlling the pressure reduction means, the pressure detection means for detecting the pressure in the cuff, and the pressure reduction means. And / or control value adjusting means for correcting the control value for the next pressure reduction based on the pressure in the cuff.
  • the electronic blood pressure monitor according to the second aspect of the present invention is the electronic blood pressure monitor according to the first aspect of the present invention, wherein the control value is a pressure reducing means at the start of pressure reduction. It is characterized in that it is a control initial value for controlling.
  • the control value adjusting means is a force whose elapsed time from the start of depressurization matches the set value.
  • the pressure reduction rate calculation means for calculating the pressure reduction rate when it is determined that the predetermined time has elapsed from the start of the pressure reduction by the elapsed time determination means, and the pressure reduction rate calculated by the pressure reduction rate calculation means
  • Decompression speed deviation calculation means for calculating the deviation of the speed from the target decompression speed, and the drop of pressure in the cuff from the start of decompression when it is determined by the elapsed time determination means that a predetermined time has elapsed from the start of decompression.
  • Pressure drop amount calculation means for calculating the amount, the speed deviation calculated by the pressure reduction speed deviation calculation means, and the pressure drop amount calculated by the pressure drop amount calculation means;
  • a control initial value correction amount determination means for determining a correction amount, a control initial value correction means for correcting the control initial value based on the correction amount determined by the control initial value correction amount determination means,
  • the control initial value Control initial value storage means for storing the control initial value corrected by the value correction means.
  • the deviation of the pressure reduction rate from the target pressure reduction rate, the pressure drop from the start of pressure reduction, the target pressure reduction rate And a control initial value correction amount table defining the relationship of correction amounts of the control initial values, wherein the control initial value correction amount determination means further determines the control initial values based on the control initial value correction amount table. It is characterized in that the correction amount is determined.
  • the control value adjusting means calculates depressurization rate during depressurization;
  • Elapsed time calculation means for calculating an elapsed time from the start of depressurization until it is determined by the target depressurization speed arrival judging means that the target depressurization speed has been reached;
  • Pressure drop amount calculating means for calculating the amount of drop of the pressure reduction start force of the pressure in the cuff until it is determined that the pressure has been determined, the elapsed time calculated by the elapsed time calculating
  • Control initial value correction amount determination means for determining the correction amount of the control initial value based on the pressure drop amount calculated by the control initial value correction amount determination means based on the correction amount determined
  • control initial initial correction amount determining means determines the amount of pressure drop from the start of depressurization and the start of depressurization.
  • a correction amount of the control initial value is determined based on a relational expression of an elapsed time of the first control value and a correction amount of the control initial value.
  • pressure detection is performed when the pressure in the cuff is reduced by the pressure reducing means.
  • the control value adjusting means Based on the pressure in the cuff detected by the means, the control value adjusting means corrects the control value for controlling the pressure reducing means at the time of pressure reduction.
  • the pressure reduction means is controlled by the pressure reduction control means based on the control value adjusted at the current pressure reduction.
  • the electronic sphygmomanometer since the current decompression control is performed based on the control initial value corrected at the previous decompression, the cuff is reduced at a decompression speed close to the target value. Can be pressed. Therefore, if it is possible to prevent leakage of detection of pulse waves immediately after the start of depressurization and lengthening of the measurement time S, an effect is produced.
  • 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 control initial value adjusting means of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • FIG. 3 is a chart showing an example of a control initial value correction amount table of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • FIG. 4 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. 5 is a flow chart showing a control initial value adjustment procedure of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • Fig. 6 is a characteristic diagram showing the relationship between time and pressure in the cuff comparing the presence of correction of the control initial value.
  • FIG. 7 is a block diagram showing a configuration of control initial value adjusting means of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • FIG. 8 is a flow chart showing a control initial value adjustment procedure of the electronic blood pressure monitor according to the second embodiment of the present invention. Explanation of sign
  • 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 includes a cuff 1, pressure detecting means 2, pressurizing means 3, pressure reducing means 4, display means 5, operating means 6, and a microcomputer (hereinafter referred to as a microcomputer).
  • 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 is a cuff 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. Decrease
  • the pressure means 4 is constituted of, for example, an exhaust valve which exhausts air or the like in the cuff 1 at a minute 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.
  • 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 for setting a pressure value
  • a memory button for storing measurement results, etc.
  • the microcomputer 7 executes the blood pressure measurement program to realize the pressurization control unit 11, the pressure reduction control unit 12, the blood pressure value determination unit 13, the control initial value adjustment unit 14, and the pulse wave detection unit 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, if 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 depressurization control means 12 controls the opening degree of the exhaust valve based on the control initial value at the start of the slow depressurization of the cuff 1 after the pressurization of the cuff 1 is completed. And the decompression control means 12 controls the opening degree of the exhaust valve so that the decompression speed approaches the target decompression speed based on the pressure value in the cuff 1 detected by the pressure detection section 2 during the slow decompression of the cuff 1. Do. Further, the pressure reduction control means 12 fully opens the exhaust valve at the end of the blood pressure measurement.
  • the exhaust valve is driven by a pulse width modulated drive signal.
  • the control initial value for controlling the opening of the exhaust valve at the start of depressurization and the control value for controlling the opening of the exhaust valve during depressurization are represented by digital values corresponding to the pulse width.
  • the pressure reduction control means 12 changes this digital value to The opening degree of the exhaust valve is controlled by changing the duty of the drive signal.
  • 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.
  • the control initial value adjusting means 14 adjusts the control initial value based on the pressure value in the cuff 1 detected by the pressure detecting means 2 during the slow pressure reduction of the cuff 1.
  • the control initial value updated by this adjustment is used as the control initial value at the start of depressurization of the next blood pressure measurement. That is, in the electronic blood pressure monitor of the embodiment, the decompression control means 12 controls the opening degree of the exhaust valve at the start of decompression of the current blood pressure measurement based on the control initial value updated at the previous blood pressure measurement. Do.
  • 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 slowly depressurized.
  • the blood pressure value determination means 13 determines a systolic blood pressure value and a diastolic blood pressure value based on the pulse wave component detected by the pulse wave detection means 15, for example, by a blood pressure determination algorithm by the well-known oscillometric method.
  • the determined blood pressure value is displayed on 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.
  • FIG. 2 is a block diagram showing a configuration of control initial value adjusting means.
  • the control initial value adjustment means 14 includes an elapsed time determination means 21, a pressure reduction rate calculation means (hereinafter simply referred to as pressure reduction rate calculation means) 22 when a predetermined time has elapsed from the start of pressure reduction, Deviation calculation means 23, pressure drop amount calculation means (hereinafter simply referred to as pressure drop amount calculation means) 24 when a predetermined time has elapsed from the start of pressure reduction, control initial value correction amount determination means 25, control initial value correction amount table 26, a control initial value correction means 27 and a control initial value storage means 28.
  • the elapsed time determining means 21 determines that a predetermined time (for example, 1 second or 2 seconds) has elapsed from the start of pressure reduction of the cuff 1.
  • the elapsed time can be obtained by subtracting the pressure reduction start time from the current time.
  • the elapsed time judging means 21 is a program for reducing the pressure in the blood pressure measurement program, wherein a specific routine in the pressure reduction routine is Myco.
  • Step 7 describes the step of determining that the predetermined time has elapsed from the start of depressurization when processing is performed a predetermined number of times, and is realized by the microcomputer 7 processing the step.
  • the pressure reduction start time is the time when the pressure reduction processing routine is started, and is zero.
  • the current time is the time when the microcomputer 7 processes a specific routine in the pressure reduction processing routine a predetermined number of times.
  • the elapsed time from the start of depressurization is the time required for the microcomputer 7 to process a specific routine in the depressurization processing routine a predetermined number of times.
  • the depressurization processing routine is a program for depressurizing the cuff 1, and is executed by the microcomputer 7 after the pressurization processing routine, which is a program for depressing the cuff 1, is completed. It should be noted that instead of determining the elapsed time based on the description of such a program, a counter or timer may be provided in the electronic pressure gauge and the time may be measured using them.
  • the depressurization speed calculation means 22 calculates the depressurization speed of the cuff 1 when it is determined by the elapsed time judgment means 21 that the predetermined time has elapsed from the start of depressurization.
  • 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 pressure reduction rate deviation calculating means 23 calculates a deviation (speed deviation) of the pressure reduction rate calculated by the pressure reduction rate calculating means 22 from the target pressure reduction rate. The velocity deviation is obtained by subtracting the target pressure reduction rate from the current pressure reduction rate.
  • the pressure drop amount calculation means 24 calculates the amount of drop in pressure from the start of pressure reduction in the cuff 1 when it is determined by the elapsed time determination means 21 that the pressure reduction start force has also reached a predetermined time.
  • the amount of pressure drop is obtained by subtracting the current pressure value in the cuff 1 from the pressure value in the cuff 1 at the start of depressurization.
  • the control initial value correction amount table 26 defines the relationship between the speed deviation, the pressure drop amount and the target depressurization speed, and the correction amount of the control initial value.
  • the control initial value correction amount table 26 is described in the blood pressure measurement program.
  • FIG. 3 shows an example of the control initial value correction amount table.
  • the velocity deviation, the pressure drop and the target pressure reduction velocity are respectively AV [mmHg / sec], P [mmHg] and R [mmHg / sec].
  • the control initial value correction amount table 26 shown in FIG. 3 for example, when [Delta] [nu] is smaller than -4, if [P ⁇ 0.5 XR], the correction amount of the control initial value is -5. If [0 ⁇ 5 ⁇ R ⁇ P ⁇ R], the correction amount of the control initial value is ⁇ 4. When ⁇ is larger than 4, if [R ⁇ P ⁇ 1.5 XR], the correction amount of the control initial value is +4, and if it is [1.5 XR ⁇ P], the control initial value is The correction value of the value is +5.
  • the control value when the depressurization speed of the cuff 1 is smaller than the target depressurization speed, the control value is set to increase the opening degree of the exhaust valve and enlarge the depressurization speed. If the pressure reduction rate of the cuff 1 is larger than the target pressure reduction rate, the correction amount is increased to make the control value larger in order to reduce the opening degree of the exhaust valve and reduce the pressure reduction rate. It is prescribed. Also, the correction amount is specified so as to make the control value smaller when the pressure drop is small, and to make the control value larger when the pressure drop is large.
  • the correction amount of the control initial value when ⁇ is another value is as shown in FIG. 3 and will not be listed here.
  • the control initial value correction amount determination means 25 refers to the control initial value correction amount table 26, and the pressure deviation calculated by the pressure reduction speed deviation calculation means 23 and the pressure drop calculated by the pressure drop amount calculation means 24. Determine the correction amount of the control initial value that corresponds to the amount.
  • the control initial value correction means 27 corrects the control initial value based on the correction amount determined by the control initial value correction amount determination means 25. For example, the control initial value correction means 27 reads out the control initial value stored in the control initial value storage means 28 and the correction amount determined by the control initial value correction amount determination means 25 as the control initial value. Add
  • the control initial value storage means 28 stores the control initial value corrected by the control initial value correction means 27.
  • the control initial value storage means 28 is constituted by a memory in the microcomputer 7.
  • the decompression control means 12 reads out the control initial value from the control initial value storage means 28 at the start of decompression of the next blood pressure measurement.
  • the opening degree of the exhaust valve at the start of depressurization of the cuff 1 has an appropriate range. If the opening degree of the exhaust valve is smaller than the appropriate range, it takes a long time to reach the target depressurization speed, and the measurement time becomes long. On the other hand, if the degree of opening of the exhaust valve is too large, the amount of pressure drop immediately after the start of depressurization becomes too large, so it is not suitable for blood pressure measurement. In the experiments of the present inventors, in the specific cuff and exhaust valve combination, when the opening degree of the exhaust valve at the start of depressurization of the cuff 1 is about 30 to 40%, the shortest time is the most pressure. The target pressure reduction rate was reached with a small amount of descent.
  • FIG. 4 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. 4 are started when the pressure in the cuff 1 reaches a predetermined pressure while the cuff 1 is pressurized.
  • the decompression control means 12 first reads the control initial value from the control initial value storage means 28 (step Sl).
  • the pressure reduction control means 12 sets the control initial value read out from the control initial value storage means 28 as the control value at the start of the current pressure reduction (step S2).
  • the blood pressure is measured by a known blood pressure determination algorithm (step S3).
  • the exhaust valve of the depressurizing means 4 has an opening degree corresponding to the control value (control initial value read from the control initial value memory means 28) set in step S2 by the depressurization control means 12.
  • the decompression control means 12 executes a well-known decompression control algorithm, and performs decompression control based on the pressure value in the cuff 1 detected by the pressure detection means 2 (step S5).
  • the control initial value adjusting means 14 determines whether or not the control initial value has been adjusted (step S6). If the control initial value has been adjusted (Step S6: Yes), the process returns to the blood pressure measurement of Step S3. On the other hand, if the control initial value is not adjusted (step S6: No), the control The initial value adjustment means 14 performs control initial value adjustment processing described later (step S7), and returns to the blood pressure measurement in step S3. Then, the blood pressure measurement is continued, and when the highest blood pressure value and the lowest blood pressure value are determined by the blood pressure value determination means 13 (step S4: Yes), the exhaust valve of the pressure reduction means 4 is fully opened and the cuff 1 is rapidly exhausted. End the series of decompression processing shown in.
  • FIG. 5 is a flow chart showing a control initial value adjustment procedure of the electronic blood pressure monitor according to the first embodiment of the present invention.
  • the elapsed time determination means 21 obtains an elapsed time (T) from the start of pressure reduction of the cuff 1 (step S11). It is determined whether T) has reached the set value (step S12). In this case, in order to clearly indicate that the processing after the pressure reduction start of the cuff 1 reaches a predetermined time, it is assumed that the elapsed time is determined in steps S11 and S12. S: Actually, as described above, the elapsed time (T) reaches the set value when the microcomputer 7 processes a specific routine in the pressure reduction processing routine a predetermined number of times.
  • step S12 If the elapsed time (T) from the start of depressurization of the cuff 1 does not reach the set value (step S12: No), a series of control initial value adjustment processing shown in FIG. 5 is ended. If the elapsed time (T) from the start of depressurization of cuff 1 reaches the set value (step S 12: Yes), the depressurization speed calculation means 22 calculates the depressurization speed after a predetermined time has elapsed from the start of depressurization of cuff 1 Calculate (step S13). Next, the speed deviation ( ⁇ ) is calculated by the pressure reduction speed deviation calculation means 23 (step S14). Further, the pressure drop amount calculation means 24 also calculates the pressure drop amount (P) after a predetermined time has elapsed for the pressure reduction start force of the cuff 1 (step S15).
  • control initial value correction amount determination means 25 calculates a control initial value correction amount table based on the speed deviation ( ⁇ ) and the pressure drop amount (P) calculated in step S14 and step S15.
  • the correction amount of the corresponding control initial value is read from step 26 (step S16).
  • the control initial value correction means 27 reflects the correction amount read in step S16 on the current control initial value, and newly sets it as the control initial value (step S17).
  • the control initial value correction means 27 stores the new control initial value in the control initial value storage means 28 (step S18). Then, the series of control initial value adjustment processing shown in FIG. 5 ends.
  • FIG. 6 is a characteristic diagram showing an example of the effect when the control initial value is corrected, and The relationship between the pressure in the cuff 1 and the velocity deviation of the decompression speed, and the relationship between time and the pressure in the cuff 1 are shown.
  • “first” means that cuff 1 was depressurized when the control initial value is the value at the time of shipment from the factory (design value); Is the pressure reduction of cuff 1 after correcting the initial control value 10 times.
  • control initial value is corrected based on the time required for the cuff pressure reduction rate to reach the target pressure reduction rate and the pressure drop amount of the cuff.
  • the overall configuration of the sphygmomanometer is the same as the configuration shown in FIG. However, in the following description, since the configuration of the control initial value adjusting means is different from that of the first embodiment, the code of the control initial value adjusting means is "34".
  • FIG. 7 is a block diagram showing a configuration of control initial value adjustment means of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • the control initial value adjusting means 34 includes a pressure reducing speed calculating means 41, a pressure reducing speed deviation calculating means 42, a target pressure reducing speed attainment determining means 43, and an elapsed time calculating means for achieving the target pressure reducing speed (hereinafter referred to as Simply used as elapsed time calculation means 44, Pressure drop amount calculation means (hereinafter, simply referred to as pressure drop amount calculation means) until reaching the target pressure reduction speed 45, Control initial value correction amount determination means 46, Control initial value correction Means 47 and control initial value storage means 48 are provided.
  • the depressurization speed calculation means 41 calculates the depressurization speed of the cuff 1 during depressurization of the cuff 1 based on the pressure value in the cuff 1 detected by the pressure detection means 2.
  • the pressure reduction rate deviation calculation means 42 is the same as the pressure reduction rate deviation calculation means 23 of the first embodiment.
  • the target pressure reduction rate attainment determination means 43 determines whether or not the pressure reduction rate of the cuff 1 has reached the target pressure reduction rate. For example, the target depressurization speed attainment determination means 43 determines that the depressurization speed of the cuff 1 is lower when the absolute value of the speed deviation of the depressurization speed calculated by the depressurization speed deviation calculation means 42 becomes equal to or less than a preset allowable value. It is determined that the target pressure reduction rate has been reached.
  • the elapsed time calculation means 44 calculates an elapsed time from the start of pressure reduction until it is determined by the target pressure reduction speed attainment determination means 43 that the target pressure reduction speed has been reached. For example, when The interval calculating unit 44 calculates the elapsed time by software processing, similarly to the elapsed time determining unit 21 of the first embodiment. Similar to the pressure drop amount calculation means 24 of the first embodiment, the pressure drop amount calculation means 45 determines the pressure in the cuff 1 until it is determined by the target pressure reduction speed attainment determination means 43 that the target pressure reduction speed has been reached. Calculate the amount of depression from the start of pressure reduction.
  • the control initial straight correction amount determination means 46 calculates a control initial value according to a predetermined relational expression. Determine the amount of correction for the value.
  • T and P be the elapsed time and pressure drop from the start of pressure reduction in Cuff 1 to reach the target pressure reduction rate, and let ⁇ and / 3 be coefficients set according to the target pressure reduction rate, respectively. Is represented by 1S without particular limitation, for example, OL X P- ⁇ XT].
  • FIG. 8 is a flow chart showing a control initial value adjustment procedure of the electronic blood pressure monitor according to the second embodiment of the present invention.
  • the depressurization speed calculation unit 41 calculates the depressurization speed of the cuff 1 (step S21).
  • the pressure deviation velocity deviation calculating means 42 calculates the velocity deviation ( ⁇ ) of the pressure reduction velocity (step S22).
  • step S23: No If the absolute value of the speed deviation ( ⁇ ) exceeds the allowable value (step S23: No), the series of control initial value adjustment processing shown in FIG. 8 is ended. If the absolute value of the speed deviation ( ⁇ V) is less than the allowable value (step S23: Yes), the elapsed time calculating means 44 calculates the elapsed time (T) from the start of depressurization of the cuff 1 to the current time. To do (step S24). Further, the pressure drop amount calculation means 45 calculates the pressure drop amount (P) in the cuff 1 from the start of depressurization of the cuff 1 to the present time (step S25).
  • control initial value correction amount determination means 46 calculates the control initial value from the above-described relational expression.
  • the correction amount is calculated (step S26).
  • the control initial value correction means 47 reflects the correction amount calculated in step S26 on the current control initial value and newly sets it as the control initial value (step S27), and stores it in the control initial value storage means 48. Make it memorize (step S28). Then, the series of control initial value adjustment processing shown in FIG. 8 ends.
  • the control initial value adjustment means 14 and 34 adjust the control initial value based on the pressure in the cuff 1 detected during the pressure reduction of the cuff 1. Be done. Then, at the start of depressurization of the next blood pressure measurement, the opening degree of the exhaust valve of the depressurizing means 4 is controlled based on the control initial value adjusted at the time of depressurization of the current blood pressure measurement.
  • the degree of opening of the exhaust valve at the start of pressure reduction becomes appropriate according to the temporal change of the valve and the individual difference of the solenoid valve. Therefore, since the depressurization of the cuff 1 is always started at the depressurization rate close to the target value, it is possible to prevent detection leak of pulse wave immediately after the start of depressurization and lengthening of blood pressure measurement.
  • the exhaust valve may be driven by another driving method as described in the example in which the exhaust valve is driven by the pulse width modulated driving signal.
  • the electronic sphygmomanometer according to the present invention is useful for an electronic sphygmomanometer of a method of measuring blood pressure at the time of pressure reduction of the cuff, and in particular, controls the pressure reduction speed of the cuff during blood pressure measurement. Suitable for electronic sphygmomanometers.

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Abstract

Selon la présente invention, lorsqu'une pression dans un ballonnet (1) est diminuée par des moyens de diminution de pression (4), la pression dans le ballonnet (1) est détectée par des moyens de détection de pression (2). Des moyens d'ajustement de la valeur initiale de commande (14) permettent d'ajuster la valeur initiale de commande pour créer une diminution de pression pour la mesure suivante de la pression sanguine selon la pression détectée dans le ballonnet (1). Lorsque la diminution de pression du ballonnet (1) est créée pendant la mesure suivante de la pression sanguine, le degré d'ouverture de la soupape d'échappement des moyens de diminution de pression (4) est commandé selon la valeur initiale de commande ajustée pendant la diminution de pression pour la mesure en question de la pression sanguine.
PCT/JP2007/070169 2006-10-18 2007-10-16 Sphygmomanomètre électronique Ceased WO2008050634A1 (fr)

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CN2007800383261A CN101522098B (zh) 2006-10-18 2007-10-16 电子血压计

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JP2006-284071 2006-10-18
JP2006284071A JP4091644B2 (ja) 2006-10-18 2006-10-18 電子血圧計

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WO2008050634A1 true WO2008050634A1 (fr) 2008-05-02

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JP5187402B2 (ja) * 2008-12-26 2013-04-24 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方法

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JPH07213159A (ja) * 1994-02-04 1995-08-15 Nippon Fushiyokufu Kk 屋上の緑化用パネルおよび屋上緑化方法
JP5233967B2 (ja) 2009-11-20 2013-07-10 オムロンヘルスケア株式会社 血圧測定装置
WO2012073807A1 (fr) * 2010-11-30 2012-06-07 オムロンヘルスケア株式会社 Sphygmomanomètre électronique présentant une fonction de vérification facile de la pression sanguine et procédé de traitement de la mesure de pression sanguine à l'aide dudit sphygmomanomètre électronique
CN102764113A (zh) * 2011-10-09 2012-11-07 罗万前 含图像识别功能的数字血压计
TWI611103B (zh) * 2016-02-03 2018-01-11 研能科技股份有限公司 適用於壓電致動泵浦之驅動電路之控制方法及其驅動電路

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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
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

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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
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5187402B2 (ja) * 2008-12-26 2013-04-24 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方法

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CN101522098A (zh) 2009-09-02
CN101522098B (zh) 2011-04-13
JP4091644B2 (ja) 2008-05-28

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