JP2009172276A - Electronic blood pressure measuring apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that an electronic blood pressure measuring apparatus which is publicly known does not have a feature of switching between k4 and k5 sounds by a user. <P>SOLUTION: An electronic blood pressure measuring apparatus includes a cuff for mainly pressurizing and depressurizing a measuring region of the user, a pressure sensor for detecting a change in a pulse pressure of the measuring region of a person to be measured, a selecting device which uses k4/k5 Korotkov's sound measuring methods as measuring conditions depending on the choice of the user, and a microprocessor unit which receives the measuring conditions, controls the pressure sensor, and measures in accordance with the set measuring conditions. After performing arithmetic processing based on the measured numerical value which is detected, the electronic blood pressure measuring apparatus controls a display device to display a measured blood pressure, a systolic blood pressure value, and a diastolic blood pressure value. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic blood pressure measurement apparatus, and more particularly to an electronic blood pressure monitor that allows a user to read systolic blood pressure and diastolic blood pressure by switching between different phase measurement methods of Korotkoff's sounds.

  Blood pressure is an important indicator of health for the human body, and heart and blood vessel function can be known by measuring blood pressure. Since humans are biased toward high-fat, high-sugar content and high-salt content due to changes in work pressure and eating and drinking customs, they place a heavy burden on the body.

A known electronic blood pressure monitor is set to either a k4 or k5 Korotkoff sound measurement method employed for clinical verification during design and verification.
However, it is extremely difficult to detect blood pressure in children with special characteristics such as pregnant women, severe anemia, and main artery valve insufficiency. Therefore, the medical community defines the Korotkoff sound fourth phase (hereinafter referred to as k4) as the diastolic arterial pressure when the sound changes due to such a special constitution. Unfortunately, this kind of k4 sound electronic blood pressure measurement method is not applicable to the general public.
For this reason, the trader must specially prepare an electronic sphygmomanometer for k4 Korotkoff sound measurement for the above-mentioned special constitution. However, the known electronic blood pressure monitor is not provided with a function of switching k4 or k5 sound on the user side. Therefore, the application target of the electronic sphygmomanometer is restricted.

  In view of this point, the above-described electronic blood pressure monitor that is fixed to and measured at the k4 or k5 sound has a drawback that the range of use is limited, and there is room for improvement.

  An electronic sphygmomanometer for achieving the above object includes an armband having an air bag covering a wrist or arm of a user, and filling the air bag with air to measure a measurement site of the subject. A pump mechanism that temporarily stops the flow of arterial blood, a valve mechanism that discharges air inside the air bag, the valve mechanism that adjusts the pressurization level of the armband by the valve mechanism, and a detected target A pressure sensor that outputs a pulse pressure change of a measurement site by replacing it with a pulse signal, an amplifier circuit, a pulse signal output from the pressure sensor, a selection device that switches a k4 or k5 sound by a user, and the selection device A microprocessor unit (MCU) that receives the set measurement conditions and measures the pressure sensor based on the set measurement conditions, the microprocessor unit MCU) is characterized in that after processing the pulse signal output from the amplifier circuit, it controls a display device such as a liquid crystal display to display at least measured systolic blood pressure and diastolic blood pressure. .

That is, the first invention of the present application is to pressurize and depressurize a user's measurement site, to detect an arm band, to detect a change in pulse pressure of the measurement site, and to measure blood pressure by the user. A selection device that switches either the Korotkoff sound fourth phase (k4 sound) or the Korotkoff sound fifth phase (k5 sound) as measurement conditions before performing
The pressure sensor is controlled and measured based on the set measurement conditions, and the measured numerical value is processed. The microprocessor unit and the processing result of the microprocessor unit are received, at least from the user The gist of the present invention is to provide an electronic blood pressure measurement device including at least a display device that displays measured systolic blood pressure and diastolic blood pressure.

  The gist of the second invention of the present application is to provide the electronic blood pressure measuring device according to the first invention, wherein the display device can display the measurement conditions switched and set by the selection device. .

  The gist of the third invention of the present application is to provide the electronic blood pressure measuring device according to the first invention, characterized in that the arm band is provided with an air bag for filling and discharging air.

  The fourth invention of the present application further includes a pump mechanism, which is controlled by the microprocessor unit, and the air bag pressurizes to a pressure for temporarily stopping the blood flow in the artery. The gist of the present invention is to provide an electronic blood pressure measurement device according to the third aspect of the present invention.

  The fifth invention of the present application further includes an exhaust valve, and the exhaust valve is controlled by the microprocessor unit, and discharges the air inside the air bag at a low flow rate. The gist is to provide the electronic blood pressure measuring device described.

  The sixth invention of the present application further includes an electromagnetic valve, and the electromagnetic valve is controlled by the microprocessor unit and can quickly release the internal air of the air bag. The gist is to provide a blood pressure measuring apparatus.

  Further, according to a seventh aspect of the present invention, the air bag is connected to the pressure sensor, the pump mechanism, the exhaust valve, and the electromagnetic valve via a connecting pipe, controlled by the microprocessor unit, and measured by the armband. The gist of the invention is to provide the electronic blood pressure measurement device according to the sixth aspect of the invention, wherein the pressurization level of the part is adjusted.

  According to the present invention, the blood pressure can be measured by switching the k4 or k5 sound measurement method according to the selection on the user side, and the range of use of the electronic sphygmomanometer can be increased.

  In order to further understand the technical contents, objects, and effects of the present invention, the following description is based on preferred embodiments and diagrams.

  As shown in FIG. 1, the electronic blood pressure measurement device of the present invention can measure blood pressure by switching between k4 and k5 sounds by the user.

  The switchable electronic sphygmomanometer for k4 or k5 sound measurement includes at least a communication tube 100, one end of the communication tube 100 being connected to the pump mechanism 110, and an arm that covers the wrist or arm part of the body on the other end. It is connected to an air bag 201 provided in the belt 200.

  The communication pipe 100 is connected to a pressure sensor 120, a solenoid valve 130, and an exhaust valve 131, respectively. The solenoid valve 130 can quickly release the air inside the air bag 201.

  When the blood pressure is measured, the exhaust valve 131 releases the internal air of the air bladder 201 at a low flow rate, fills the air bladder 201 with the pump mechanism 110, and temporarily stops the blood flow in the artery. After pressurization, the air in the air bag 201 is stably discharged at a low flow rate for a certain period.

  The pressure sensor 120 is electrically connected to a microprocessor unit (MCU) 140 and detects blood pressure pulsation at the wrist or arm during measurement to detect high / low blood pressure values (systolic blood pressure / expansion). Blood pressure).

  The microprocessor unit (MCU) 140 is electrically connected to a display device 150 such as a liquid crystal display by an electric circuit to display at least measured high / low blood pressure values.

  The sphygmomanometer is further provided with a power switch 160 to prepare for the on / off operation of the sphygmomanometer power supply.

The electronic sphygmomanometer of the present invention is further provided with a selection device 170, and the user can set k4 or k5 sound as the blood pressure measurement condition as required.
The selection device 170 transmits a control signal to the microprocessor unit (MCU) 140 according to a selection setting condition of a user, and the pressure sensor 120 is transmitted from the microprocessor unit (MCU) 140. Is controlled to measure blood pressure in accordance with measurement conditions (measurement with k4 or k5 sound).

FIG. 2 is a logic block diagram of the internal structure of the electronic blood pressure measurement device of the present invention.
The armband 200 includes an air bag 201 that covers the wrist or arm of the user. ,
The pump mechanism 110 fills the air bag 201 with air, and temporarily stops the flow of arterial blood at the measurement site of the measurement subject.
The valve mechanism includes the electromagnetic valve 130 and the exhaust valve 131 described above, and discharges the air inside the air bag 201.
The pressure level of the armband 200 is adjusted by the pump mechanism 110, the solenoid valve 130 of the valve mechanism, and the exhaust valve 131.
Pump drive circuit 111 drives the pump mechanism 110.
The electromagnetic valve 130 adjusts the valve mechanism.
The valve drive circuit 132 controls opening and closing of the exhaust valve 131.
The selection device 170 (using a changeover switch in this embodiment) replaces the pulse pressure change of the measurement site of the measurement subject detected by the armband 200 with a pulse signal and outputs the pulse signal. According to the pulse signal output from 120, a pulse signal having a periodicity is output, and the user has a function to prepare for selection setting of k4 or k5 sound.
A microprocessor unit (MCU) 140 receives the measurement conditions set by the selection device 170 and controls the pressure sensor 120 to perform measurement based on the measurement conditions.
The microprocessor unit (MCU) 140 operates the periodic pulse signal output from the amplifier circuit 121 and then controls the display device 150 such as a liquid crystal display to measure the contraction period. Blood pressure and diastolic blood pressure are displayed.

  The display device 150 can further display the measurement conditions for the k4 or k5 sound set by the selection device 170.

  The air bag 201 is connected to the communication pipe 100 and the pressure sensor 120, the pump mechanism 110, the solenoid valve 130 of the valve mechanism, and the exhaust valve 131, and is controlled by a microprocessor unit (MCU) 140. By adjusting the pressurization level of the armband 200 to the measurement subject, as described above, the k1 sound (systolic blood pressure) and the k4 or k5 sound set by the selection device 170 (diastolic blood pressure value of blood pressure) Read.

The power supply device 180 provided in the electronic sphygmomanometer supplies a necessary power source to each part of the sphygmomanometer, and can select supply of a built-in battery set or an external power source. The power switch 160 prepares for a user's sphygmomanometer power on / off operation.
As shown in FIG. 3, the blood pressure measurement procedure of the electronic blood pressure measurement device of the present invention by the user is as follows. In the first step, the sphygmomanometer is turned on by the power switch 160 and the sphygmomanometer is turned on by the power supply device 180. Supply electricity to each part. In the second step, the k4 or k5 sound is set as a condition for diastolic blood pressure measurement from the selection device 170 as required by the user. In the third step, after the selection device 170 is set by a user, the selection device 170 outputs a control signal to the microprocessor unit (MCU) 140, and the microprocessor unit (MCU) 140. In order to control the pump mechanism 110, the solenoid valve 130 of the valve mechanism, and the exhaust valve 131 to fill the air bag 201 with air and temporarily stop the blood flow in the artery, a predetermined maximum pressure value is set. After pressurization, the air inside the air bag 201 is discharged at a low flow rate for a certain period, and detection is performed by the pressure sensor 120. In the fourth step, the detected blood vibration value of the blood vessel wall is replaced with the value of the k4 or k5 sound set in the second step, and calculation processing is performed by a microprocessor unit (MCU) 140. In the fifth step, the display unit 150 is controlled by the microprocessor unit (MCU) 140 to display the measured blood pressure.

  The electronic blood pressure measurement device of the present invention can select blood pressure measurement by switching the k4 or k5 sound measurement method according to the needs of the user, and can expand the range of use of the electronic blood pressure monitor.

1 is a schematic view of an electronic blood pressure measurement device according to the present invention. Logic block diagram of the internal structure of the electronic blood pressure measurement device of the present invention, and It is a flowchart which shows the blood pressure measurement procedure by the electronic blood pressure measuring device of this invention.

Explanation of symbols

100 communication tube 110 pump mechanism 111 pump drive circuit 120 pressure sensor 121 amplifier circuit 130 solenoid valve 131 exhaust valve 132 valve drive circuit 140 microprocessor unit (MCU)
150 Display Device 160 Power Switch 170 Selection Device 180 Power Supply Device 200 Armband 201 Air Bag

Claims (7)

An armband that applies pressure and pressure to the user's measurement site;
A pressure sensor for detecting a change in pulse pressure at the measurement site; and
A selection device that switches either the Korotkoff sound fourth phase (k4 sound) or the Korotkoff sound fifth phase (k5 sound) as a measurement condition before the user measures blood pressure, if necessary,
A microprocessor unit that controls the pressure sensor and measures based on the set measurement conditions, and performs arithmetic processing of the measured numerical values;
Including at least a display device that receives the processing result of the microprocessor unit and displays at least systolic blood pressure and diastolic blood pressure measured by the user.
Electronic blood pressure measurement device. The electronic blood pressure measurement device according to claim 1, wherein the display device can display the measurement conditions switched and set by the selection device. The electronic blood pressure measuring device according to claim 1, further comprising an air bag for filling and discharging air in the armband. 4. The electronic blood pressure measurement according to claim 3, further comprising a pump mechanism, said pump mechanism being controlled by said microprocessor unit, wherein said air bag pressurizes to a pressure that temporarily stops blood flow in the artery. apparatus. 4. The electronic blood pressure measuring device according to claim 3, further comprising an exhaust valve, wherein the exhaust valve is controlled by the microprocessor unit and discharges the air inside the air bag at a low flow rate. 6. The electronic blood pressure measuring apparatus according to claim 5, further comprising an electromagnetic valve, wherein the electromagnetic valve is controlled by the microprocessor unit and can quickly release the internal air of the air bag. The air bag is connected to the pressure sensor, the pump mechanism, the exhaust valve and the electromagnetic valve via a communication pipe, and is controlled by the microprocessor unit to adjust the pressure level of the measurement site by the armband. The electronic blood pressure measurement device according to claim 6.

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