JP2010220966A - Sphygmomanometer and operation method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow an upper arm to be easily pulled out of an arm band and to prevent unnecessary load from being applied on an air bag. <P>SOLUTION: A sphygmomanometer 10 includes the arm band 12 having an air bag 36 to press the upper arm of a subject inserted thereinto, a pressure pump 78 to supply air to the air bag 36, an emission valve 80 to emit the air from the air bag 36 with variable opening, a display part 22 to display a blood pressure value, and a pressure sensor 86 to detect the pressure of the air bag 36 and to supply a control part 20. The control part 20 supplies the air to the air bag 36 by the pressure pump 78 and pressurizes it, stops the pressure pump 78, moderately opens the emission valve 80, depressurizes the air bag 36 at a predetermined speed so as to obtain the blood pressure value, and releases the emission valve 80 after the blood pressure vale is obtained. The obtained blood value is displayed on the display part 22 when the pressure of the air bag 36 is at or less than an end determination pressure. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sphygmomanometer that presses an arm of a measurement subject with an air bag of an armband to obtain a blood pressure, and displays a blood pressure value on a display unit, and an operating method thereof.

  Home blood pressure monitors are becoming popular so that blood pressure can be measured on a daily basis for health management. It is desirable that a home sphygmomanometer not only accurately measures blood pressure but also has a simple operation method, is inexpensive, and is compact.

  The arm-in sphygmomanometer is suitable for home use because the blood pressure can be automatically measured simply by inserting the upper arm and operating a predetermined button.

  In the arm-in type sphygmomanometer, the cylindrical housing is set to have a moderately large diameter so that measurement is possible even for a thick upper arm. On the other hand, the internal air bag is sufficiently inflatable toward the inner diameter side so that measurement is possible even for a thin upper arm, and the capacity of the air bag is large.

  In addition, blood pressure measurement methods in the sphygmomanometer mainly include a Korotkoff method and an oscillometric method. In either case, the air bag provided on the armband is pressurized and inflated to block the upper arm inserted therein. Thereafter, the systolic blood pressure and the diastolic blood pressure are obtained based on the sensor signal while the exhaust valve is appropriately opened and the air bag is gradually decompressed. The obtained blood pressure is displayed on the display unit. Then, the exhaust valve is opened to contract the air bag (see, for example, Patent Document 1).

Japanese Patent No. 3826938 (FIG. 5)

  The blood pressure value is generally obtained in the order of the highest blood pressure and the lowest blood pressure as the air bag is depressurized. The minimum blood pressure is usually 30 mmHg or more, and the air bag is pressurized with this pressure when the minimum blood pressure is required.

  After that, the air bag is contracted to some extent by opening the exhaust valve. However, when the pressure is not sufficiently reduced, it is difficult to remove the upper arm, which may cause discomfort to the subject. Further, if the upper arm is pulled out when the air bag is not sufficiently depressurized, useless load is applied to the air bag. In particular, in an arm-in type sphygmomanometer (that is, a method that does not require an air bag to be wound around the upper arm in order to measure blood pressure), such a phenomenon is remarkable because the capacity of the air bag is large.

  The present invention has been made in view of such problems, and provides a sphygmomanometer and an operating method thereof that can easily remove an arm from an arm band and prevent an unnecessary load from being applied to an air bag. The purpose is to do.

  A sphygmomanometer according to the present invention includes a housing having a cylindrical insertion portion into which an upper arm of a person to be measured is inserted, and an arm that is provided inside the insertion portion and includes an air bag that compresses the arm of the subject. A belt, a pressure pump for supplying air to the air bag, an exhaust valve for exhausting air from the air bag with variable opening, a pressure sensor for detecting the pressure of the air bag, the pressure pump, A control unit that controls the exhaust valve and obtains a blood pressure value using a detection value of the pressure sensor; and a display unit that displays the blood pressure value, and the control unit obtains the blood pressure value. The opening of the exhaust valve is increased, and the blood pressure value is displayed on the display unit when the detected value of the pressure sensor becomes a predetermined pressure or less.

  The person to be measured confirms the blood pressure value and recognizes that the measurement is completed, and then removes the upper arm. In the present invention, by displaying the blood pressure value when the pressure of the air bag becomes equal to or lower than the predetermined pressure, it is easy to remove the upper arm and it is possible to prevent a wasteful load from being applied to the air bag.

  When the predetermined pressure is 1 mmHg to 20 mmHg, the air bag is sufficiently depressurized and the upper arm is easily pulled out.

  The control unit closes the exhaust valve, supplies air by the pressurizing pump to pressurize the air bag, stops the pressurizing pump, opens the exhaust valve to a non-full open state, and opens the air bag. The blood pressure value may be obtained while reducing the pressure at a predetermined speed.

  The predetermined speed may be 1 to 5 mmHg / sec.

  Furthermore, it has an intake means that is driven and controlled by the control section and sucks air from the air bag. When the control section obtains the blood pressure value and then inhales from the air bag by the air intake means, the pressure can be reduced more quickly. This makes it possible to shorten the time for waiting for the person to be measured.

  If the exhaust port of the exhaust valve is provided inside the insertion portion, the exhaust is guided into the upper arm body, and it is possible to improve the situation where it is difficult to remove the upper arm due to sweat.

  In addition, the operation method of the sphygmomanometer according to the present invention includes an arm band having an air bag that compresses the arm of the person to be measured, a pressurizing pump that supplies air to the air bag, and an open from the air bag. An exhaust valve that exhausts the air in a variable manner, a pressure sensor that detects the pressure of the air bag, and a control unit that drives and controls the pressure pump and the exhaust valve, and obtains a blood pressure value using the detection value of the pressure sensor And a display unit for displaying the blood pressure value, wherein the blood pressure value is measured and the opening of the exhaust valve is increased simultaneously with or after the measurement step. An exhausting step for exhausting, and a display step for displaying the blood pressure value on the display unit when the detected value of the pressure sensor becomes a predetermined pressure or less after the exhausting step.

  Thus, by displaying the blood pressure value when the pressure of the air bag becomes equal to or lower than the predetermined pressure, it is easy to remove the upper arm and it is possible to prevent a wasteful load from being applied to the air bag.

  In this case, the measuring step closes the exhaust valve, pressurizes the air bag by the pressurizing pump, stops the pressurizing pump after the pressurizing step, and May be opened in a non-fully open state to depressurize the air bag at a predetermined speed, and a depressurization step for obtaining a blood pressure value, and a determination step for determining the suitability of the blood pressure value after the depressurization step.

  The exhausting step may be performed simultaneously with or after the determining step.

  Further, the blood pressure monitor is driven and controlled by the control unit, and has an intake means for taking in air from the air bag, and the exhaust step opens the exhaust valve and removes the air bag from the air bag by the intake means. You may inhale.

  The person to be measured confirms the blood pressure value, recognizes that the measurement has been completed, and then removes the arm. According to the sphygmomanometer and the operating method thereof according to the present invention, the blood pressure value is displayed when the pressure of the air bag becomes equal to or lower than the predetermined pressure, so that the arm can be easily removed and a wasteful load is applied to the air bag. Can be prevented.

It is a perspective view of the sphygmomanometer according to the present embodiment. It is a front view of the sphygmomanometer according to the present embodiment. It is a disassembled perspective view of the arm band in this Embodiment. It is a perspective view of the air bag of the developed state. It is a disassembled perspective view of the air bag of the expand | deployed state. It is a block block diagram of the blood pressure meter in this Embodiment. It is a flowchart (the 1) which shows the procedure of the operating method of the blood pressure meter which concerns on this Embodiment. It is a flowchart (the 2) which shows the procedure of the operating method of the blood pressure meter which concerns on this Embodiment. It is a block block diagram of the blood pressure meter which concerns on a modification.

  Hereinafter, embodiments of the sphygmomanometer and the operation method thereof according to the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, the sphygmomanometer 10 according to the present embodiment is an arm-in type, and an arm band (also referred to as a cuff or a manchette) 12 into which the upper arm (arm) of the measurement subject is inserted. And a main body (base body) 16 that supports the armband 12. Here, the arm-in type indicates a type that can be measured by inserting the upper arm into a predetermined hole, other than a type in which an armband including an air bag is wound around the upper arm, such as a hook-and-loop type.

  The sphygmomanometer 10 is a desktop type and is driven by a commercial AC power supply or a battery (including a secondary battery). 1 and 2, the cloth cover 38 is omitted so that the armband 12 can be visually recognized.

  The main body 16 includes a housing 30 having a cylindrical insertion portion into which the upper arm of the subject is inserted, a pressurizing means 18 for supplying air to the armband 12, and a control portion 20 for measuring the blood pressure of the subject. And a display unit 22 for displaying the blood pressure obtained by the control unit 20, an operation button 24, and a speaker 26.

  The housing 30 has, for example, a weight of about 350 g, an outer diameter of about 140 mm, and an inner diameter of about 135 mm. The housing 30 may be separate from the main body 16 (the pressurizing unit 18, the control unit 20, the display unit 22, and the operation button 24).

  The display unit 22 can use a liquid crystal, an EL display, or the like. The speaker 26 generates a beep sound at the start and end of measurement and can output a predetermined voice announcement.

  As shown in FIG. 3, the armband 12 is disposed inside the insertion portion of the housing 30. The arm band 12 covers an air bag 36 (also referred to as an air bag or a bladder) that presses the upper arm of the person to be measured inserted inside the insertion portion of the housing 30 so that these members are not exposed. And a flexible cloth cover 38. The cloth cover 38 is formed of a stretch material that can expand and contract in the axial direction and the circumferential direction. The cloth cover 38 includes a cylindrical cover main body and two ring-shaped frames provided at both ends of the cover main body.

  The air bag 36 is connected to the pressurizing means 18 by the tube 14, is supplied and exhausted, and has an annular shape so as to press the upper arm of the measurement subject inserted therein over the entire circumference.

  In the following description of the armband 12 and its components, the vertical direction in which the upper arm is inserted is the X direction, and the direction along the circumference of the housing 30 is the Y direction. When the person to be measured inserts the upper arm in the armband 12, the side close to the elbow is set to the X1 side, and the side close to the shoulder is set to the X2 side. In order to make it easier to understand the insertion direction of the upper arm of the armband 12, for example, the X1 direction side may be slightly narrowed.

  As shown in FIGS. 4 and 5, the air bag 36 includes a resin sheet 40, three sponges 42, four X bell poles 44a, and one Y bell pole 44b. The resin sheet 40 is a transparent urethane sheet having a width of about 120 mm and a length of about 420 mm, for example. The sponge 42 is, for example, a flexible urethane foam having a weight of about 0.8 g. The X bell pole 44a and the Y bell pole 44b are, for example, foamed polyethylene thin plates. The weight of the X bell pole 44a is about 2 g, for example, and the weight of the Y bell pole 44b is about 10 g, for example.

  The resin sheet 40 is folded in half at the center in the Y-direction bend line 48 and the periphery is welded into a bag shape to form a base body of the air bag 36. The resin sheet 40 has a nozzle 50 at the end. The nozzle 50 is, for example, urethane vinyl chloride, and is connected to the tube 14. In the resin sheet 40, an inner peripheral portion (X1 side from the bent line 48 in FIG. 5) is an inner peripheral surface 40a, and an outer peripheral portion (X2 side from the bent line 48 in FIG. 5) is an outer peripheral surface. 40b. At the end of the inner peripheral surface 40a, a folding allowance 40c that is folded back with respect to the outer peripheral surface 40b is provided.

  The three sponges 42 each have an inclined surface 42a that is about 40 mm in the Y direction (width), about 65 mm in the X direction (length), about 25 mm in height, and becomes thinner in the X1 direction. By providing the sponge 42, a dead space in the air bag 36 is secured, the shape in the initial state is appropriately maintained, and the amount of air supplied to the air bag 36 can be reduced.

  The inner peripheral surface 40a of the air bag 36 is moved inward by being pressurized from the pressurizing pump 78, and the diameter of the air bag 36 is reduced. When air is supplied to the air bag 36, the air bag 36 can be appropriately pressurized and expanded toward the inner diameter side to compress the periphery of the upper arm. This applied pressure is controlled based on a signal from the pressure sensor 86 (see FIG. 6).

  As shown in FIG. 6, the control unit 20 is a part that integrally controls the entire sphygmomanometer 10, and is configured based on a CPU 60, and includes an A / D converter 66, a pressure pump driver, and the like. 68, an exhaust valve driver 70, a suction pump driver 72, and a storage unit 76.

  The pressurizing unit 18 includes a pressurizing pump 78, an exhaust valve 80, a suction pump (suction unit) 82, a pressure sensor 86, and the like, and is driven and controlled by the control unit 20. The A / D converter 66 converts the analog signal of the pressure sensor 86 into a digital value and supplies it to the CPU 60. The pressurization pump driver 68, the exhaust valve driver 70, and the suction pump driver 72 control the pressurization pump 78, the exhaust valve 80, and the suction pump 82 under the action of the CPU 60.

  The exhaust valve 80 has a variable opening so that the internal pressure of the air bladder 36 can be gradually reduced. A plurality of exhaust valves 80 may be provided, and the opening degree may be adjusted based on the number of opening and closing. The suction pump 82 is connected to the air bladder 36 through the tube 14 together with the pressurizing pump 78, and can suck air from the air bladder 36 under the action of the control unit 20. In addition to the suction pump 82, an ejector or the like can be used as the suction means from the air bag 36. The suction pump 82 may be omitted depending on design conditions such as cost and layout space.

  The storage unit 76 is a part that stores programs of the CPU 60, variables, blood pressure measurement values, and the like, and includes a ROM, a RAM, a flash memory, and the like.

  As a software processing unit, the CPU 60 includes a calculation unit 87 for obtaining blood pressure by an oscillometric method based on a pulse wave component obtained through the pressure sensor 86, a sequence unit 88 for defining an operation procedure of blood pressure measurement, and a calculation unit 87. And a result determination unit 90 for evaluating the obtained blood pressure value.

  The result determination unit 90 determines whether the blood pressure value obtained by the calculation unit 87 is appropriate. If the blood pressure value is normal, the result determination unit 90 displays the value on the display unit 22 under the timing control of the sequence unit 88. Here, the term “normal” means that the signal state is appropriate, not as a health barometer. The result determination unit 90 displays a predetermined error when the blood pressure value obtained by the calculation unit 87 is not normal.

  The result determination unit 90 may determine whether the blood pressure value is appropriate, for example, whether the pulse is weak and the pulse wave cannot be recognized and the blood pressure cannot be determined.

  The sequence unit 88 controls the operation of each unit based on the operation of the operation button 24. In general, when the blood pressure measurement is started by the operation button 24, the air bag 36 is pressurized while controlling the pressurizing pump 78 and monitoring the signal of the pressure sensor 86. Thereafter, the exhaust valve 80 is controlled to depressurize the air bladder 36, and the blood pressure value is displayed on the display unit 22 at a timing described later.

  The sequence unit 88 monitors the operation of the operation button 24, and performs a predetermined process corresponding to a predetermined interruption operation during blood pressure measurement. Moreover, display control of a pulse value, a past measurement value, etc. is performed based on a predetermined operation. The sequence unit 88 controls the procedure shown in FIGS.

  Next, an operation method of the sphygmomanometer 10 according to the present embodiment will be described.

  In the sphygmomanometer 10, the exhaust valve 80 is opened in the initial state, and the air bag 36 is in a non-pressurized state. The person to be measured inserts the upper arm into the arm band 12.

  Next, when the measurement subject operates the operation button 24, measurement of blood pressure is started under the action of the control unit 20.

  In step S1 of FIG. 7, predetermined initial setting is performed.

  In step S2, the display unit 22 is set to the full lighting state.

  In step S3, a predetermined pressure zero set process is performed. That is, after confirming that the pressure is stable, the atmospheric pressure value is taken as 0 mmHg, and zero point correction is performed.

  In step S <b> 4, the internal pressure applied to the air bladder 36 and the tube 14 is monitored based on the signal from the pressure sensor 86 and displayed on the display unit 22. At this time, the internal pressure is substantially zero. Thereafter, the display unit 22 continues to display the changing internal pressure until the blood pressure value is displayed (step S17).

  In step S5, the exhaust valve 80 is closed and the pressurization pump 78 is driven to start pressurization of the air bladder 36. The suction pump 82 is stopped.

  In step S <b> 6, the pulse wave generated in the air bag 36 is detected under the action of the calculation unit 87.

  In step S7, the end of pressurization is determined based on the magnitude of the pulse wave. When the pressurization is sufficiently performed, the blood pressure in the artery is lost and the pulse wave is rapidly reduced, so that the pressurization is terminated. According to such automatic pressurization, the pressurizing force of the air bladder 36 can be reduced, so that the measurement time can be shortened, energy consumption can be suppressed, and the burden on the subject can be reduced. After the pulse wave is no longer detected, the pressurization may be continued by a predetermined amount with some allowance. If the pressurization is insufficient, the process returns to step S6 and the pressurization is continued.

  In step S8, pressurization by the pressurization pump 78 is terminated.

  The pressurizing step is configured by steps S5 to S8 as described above.

  In step S9 of FIG. 8, after the pressurization of the air bag 36 is completed, the exhaust valve 80 is opened moderately (not fully open), and the air bag 36 is decompressed to about 1 to 5 mmHg / sec, preferably about 2 to 5 mmHg. To do. In order to obtain a stable measurement state, the air bag 36 is depressurized at a substantially constant speed.

  In step S <b> 10, the calculation unit 87 detects the magnitude of the pulse wave obtained from the pressure sensor 86.

  In step S11, the calculation unit 87 temporarily determines the systolic blood pressure value based on the sudden increase in the pulse wave amplitude. If no pulse wave is generated or is sufficiently small, the process returns to step S10.

  The pulse wave amplitude further increases and reaches its peak. This pressure is the mean blood pressure. Thereafter, the pulse wave amplitude decreases, and at a certain pressure, the pulse wave amplitude rapidly decreases.

  In step S12, the calculation unit 87 temporarily determines the minimum blood pressure value based on the sudden decrease in the pulse wave. When the pulse wave has not decreased, the process returns to step S10.

  The minimum blood pressure is required when it is approximately 30 mmHg or more. In this state, the pressure on the upper arm is still high and it is difficult to remove the upper arm as it is.

  The pressure reducing step is configured by steps S9 to S12 as described above. In step S13, the result determination unit 90 determines whether the systolic blood pressure value and the diastolic blood pressure value tentatively obtained in steps S11 and S12 are appropriate. This suitability determination is made instantaneously and there is no delay due to this. Step S13 may be performed at the same timing as or after step S14.

  This step S13 constitutes a determination step. Moreover, the measurement step is comprised by the pressurization step of step S5-S8, the pressure reduction step of step S9-S12, and the judgment step of step S13.

  In step S14, the exhaust valve 80 is greatly opened (that is, the opening degree is increased), and the air bag 36 is exhausted. Alternatively, the suction pump 82 may be driven to take in air from the air bag 36.

  The opening degree of the exhaust valve 80 in step S14 is substantially fully opened, but may be at least larger than the opening degree of the exhaust valve 80 in step S9.

  This exhaust processing may take time due to the large capacity of the air bag particularly in the arm-in type sphygmomanometer. However, by driving the suction pump 82, quick exhaust is possible and the person to be measured waits. The time to make it short can be shortened.

  During suction by the suction pump 82, the exhaust valve 80 may be closed depending on the fluid flow conditions.

  In step S15, exhaust standby processing is performed. This presents predetermined information to the operator using the time until the air bag 36 is sufficiently exhausted. For example, a health management method based on blood pressure (such as one-point advice on lifestyle habits for lowering blood pressure) is output by the display unit 22 or the speaker 26 as text information or voice information. The output information as the exhaust standby process may be different depending on the obtained blood pressure (for example, depending on the optimum blood pressure, normal blood pressure, normal high blood pressure, and hypertension). As an exhaust standby process, a melody may be played from the speaker 26. The output by the exhaust standby process is continuously performed until step S16. By the exhaust standby process, the person to be measured can stand by significantly.

  The exhaust step is constituted by steps S14 and S15 as described above.

  In step S16, the internal pressure of the air bladder 36 is confirmed, and it is confirmed whether or not the pressure is reduced to a predetermined end determination pressure.

  It is desirable that the end determination pressure be as low as possible so that the operator can reduce the pressure so that the operator can easily remove the upper arm from the armband 12. On the other hand, in order to shorten the time for waiting for the operator, it is better to raise it to some extent. Of course, it is not reasonable to set the end determination pressure to 30 mmHg or more, which is a general minimum blood pressure. From such conditions, the end determination pressure may be set to 1 mmHg to 20 mmHg, preferably 5 mmHg to 10 mmHg.

  When the internal pressure of the air bag 36 is equal to or lower than the end determination pressure, the process proceeds to step S17, and otherwise, the process waits.

  In step S17, the exhaust standby process is terminated, and the systolic blood pressure value and the diastolic blood pressure value determined in step S13 are displayed on the display unit 22 in units of mmHg or Pa. The display unit 22 may display additional information such as a pulse and a pulse pressure. On the other hand, when it is determined that there is an abnormality in step S13, a predetermined error is displayed. Further, predetermined post-processing such as stopping the suction pump 82 is performed.

  By such processing in step S17, the person to be measured recognizes that his / her blood pressure value and measurement have been completed, and removes the upper arm from the armband 12. At this time, since the air bag 36 has been depressurized to a pressure equal to or lower than the end determination pressure, the upper arm can be easily removed and no unnecessary load is applied to the air bag 36.

  A display step is configured by steps S16 and S17 as described above.

  In the sphygmomanometer 10, the exhaust port 80 a of the exhaust valve 80 may be provided inside the insertion portion of the housing 30 as shown in FIG. 9. The exhaust port 80a is provided at a position where the upper arm is supplied to a portion where the upper arm comes into contact with the cloth cover 38.

  That is, the exhaust port 80 a avoids the air bag 36 or provides a through passage in the air bag 36, and passes through the through passage and extends from the inner wall surface of the insertion portion of the housing 30 to the inside of the cloth cover 38. Is provided. The exhausted air passes through the cloth cover 38 from the exhaust port 80a and is guided to the upper arm of the measurement subject. Thereby, since the exhausted air sprays on the upper arm, it is possible to improve the situation where it is difficult to remove the upper arm due to sweating in summer.

  The sphygmomanometer 10 may be a Korotkoff method that obtains a blood pressure value based on Korotkoff sound detected by a microphone.

  The sphygmomanometer and the operating method thereof according to the present invention are not limited to the above-described embodiments, and various configurations and processes can be adopted without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Blood pressure monitor 12 ... Arm band 14 ... Tube 16 ... Main body 18 ... Pressurizing means 20 ... Control part 22 ... Display part 30 ... Housing 36 ... Air bag 60 ... CPU
78 ... Pressure pump 80 ... Exhaust valve 80a ... Exhaust port 82 ... Suction pump 86 ... Pressure sensor 87 ... Calculation unit 88 ... Sequence unit 90 ... Result judgment unit

Claims (10)

A housing having a cylindrical insertion portion into which the upper arm of the measurement subject is inserted;
An armband provided with an air bag provided inside the insertion portion and compressing the arm of the measurement subject;
A pressurizing pump for supplying air to the air bag;
An exhaust valve for exhausting the air bag in a variable amount of opening;
A pressure sensor for detecting the pressure of the air bag;
A control unit that drives and controls the pressurization pump and the exhaust valve, and obtains a blood pressure value using a detection value of the pressure sensor;
A display unit for displaying the blood pressure value;
Have
The control unit increases the opening of the exhaust valve after obtaining the blood pressure value, and displays the blood pressure value on the display unit when the detection value of the pressure sensor becomes a predetermined pressure or less. Blood pressure monitor characterized by. The sphygmomanometer according to claim 1,
The sphygmomanometer, wherein the predetermined pressure is 1 mmHg to 20 mmHg. The sphygmomanometer according to claim 1 or 2,
The control unit closes the exhaust valve, supplies air by the pressurizing pump to pressurize the air bag, stops the pressurizing pump, opens the exhaust valve to a non-full open state, and opens the air bag. A sphygmomanometer, wherein the blood pressure value is obtained while reducing the pressure at a predetermined speed. The blood pressure monitor according to claim 3,
The sphygmomanometer, wherein the predetermined speed is 1 to 5 mmHg / sec. The sphygmomanometer according to any one of claims 1 to 4,
In addition, drive control is performed by the control unit, and has an intake means for intake from the air bag,
The control unit, after obtaining the blood pressure value, inhales from the air bag by the intake means. The sphygmomanometer according to any one of claims 1 to 5,
The sphygmomanometer, wherein an exhaust port of the exhaust valve is provided inside the insertion portion. An armband with an air bag that compresses the arm of the person being measured;
A pressurizing pump for supplying air to the air bag;
An exhaust valve for exhausting the air bag in a variable amount of opening;
A pressure sensor for detecting the pressure of the air bag;
A control unit that drives and controls the pressurization pump and the exhaust valve, and obtains a blood pressure value using a detection value of the pressure sensor;
A display unit for displaying the blood pressure value;
A method of operating a sphygmomanometer comprising:
A measuring step for obtaining the blood pressure value;
At the same time as or after the measurement step, an exhaust step for exhausting by increasing the opening of the exhaust valve;
A display step of displaying the blood pressure value on the display unit when a detection value of the pressure sensor becomes a predetermined pressure or less after the exhausting step;
A method of operating a sphygmomanometer, comprising: The operation method of the blood pressure monitor according to claim 7,
The measuring step closes the exhaust valve, and pressurizes the air bag by the pressurizing pump; and
After the pressurizing step, the pressurizing pump is stopped, the exhaust valve is opened non-fully open, and the air bag is depressurized at a predetermined speed, and a pressure reducing step for obtaining a blood pressure value;
A determination step of determining whether the blood pressure value is appropriate after the pressure reducing step;
A method of operating a sphygmomanometer, comprising: The operation method of the blood pressure monitor according to claim 8,
The method of operating a sphygmomanometer, wherein the exhausting step is performed simultaneously with or after the determining step. In the operating method of the sphygmomanometer according to any one of claims 7 to 9,
Further, the blood pressure monitor is driven and controlled by the control unit, and has an intake means for sucking air from the air bag,
In the evacuation step, the evacuation valve is opened, and the sphygmomanometer is operated by taking in air from the air bag by the air intake means.

Images