WO2020039830A1 - 測定装置、測定方法及び測定プログラム - Google Patents

測定装置、測定方法及び測定プログラム Download PDF

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Publication number
WO2020039830A1
WO2020039830A1 PCT/JP2019/029026 JP2019029026W WO2020039830A1 WO 2020039830 A1 WO2020039830 A1 WO 2020039830A1 JP 2019029026 W JP2019029026 W JP 2019029026W WO 2020039830 A1 WO2020039830 A1 WO 2020039830A1
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WO
WIPO (PCT)
Prior art keywords
pressure
measurement
user
cuff
blood pressure
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/JP2019/029026
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English (en)
French (fr)
Japanese (ja)
Inventor
出野　徹
貴広 濱口
湯本　将彦
山内　隆伸
和 松岡
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.)
Omron Healthcare Co Ltd
Original Assignee
Omron Healthcare 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 Omron Healthcare Co Ltd filed Critical Omron Healthcare Co Ltd
Priority to DE112019003679.3T priority Critical patent/DE112019003679T5/de
Priority to CN201980050192.8A priority patent/CN112512415B/zh
Publication of WO2020039830A1 publication Critical patent/WO2020039830A1/ja
Priority to US17/176,747 priority patent/US12127821B2/en
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
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • 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
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/681—Wristwatch-type devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient; User input means
    • A61B5/742—Details of notification to user or communication with user or patient; User input means using visual displays

Definitions

  • the present invention relates to a measuring device, a measuring method, and a measuring program capable of measuring, for example, blood pressure and electrocardiogram.
  • Patent Document 1 discloses a blood pressure measurement device that can be worn on a patient's arm. This blood pressure measurement device detects a pulse wave signal of a patient using a pulse wave sensor, and calculates a blood pressure based on the detected pulse wave signal.
  • a pair of electrodes is provided as electrodes for measuring electrocardiogram. If any of the pair of electrodes does not properly contact the measurement site of the user, a useful electrocardiogram measurement result may not be obtained.
  • the present invention has been made in view of the above circumstances, and an aspect of the present invention is to provide a measuring device, a measuring method, and a measuring program capable of appropriately measuring blood pressure and electrocardiogram.
  • the present invention takes, for example, the following measures in order to solve the above-mentioned problems.
  • the measurement device includes a pressure acquisition unit that acquires pressure information representing a pressure in a pressing cuff, a pressing process of pressing the pressing cuff, and the pressing cuff after the pressing process ends.
  • the pressure in the pressing cuff in each of a pressurized state holding step of maintaining a pressurized state and a depressurizing step of reducing the pressure of the pressing cuff after the end of the pressurized state holding step, based on the pressure information.
  • a cuff pressure control unit that controls the pressure of the user, a blood pressure calculation unit that calculates the user's blood pressure based on the pressure information, and an electrocardiogram measurement unit that measures the user's electrocardiogram in the pressurized state holding process. .
  • the electrocardiogram is measured in the pressurized state holding process provided between the pressurizing process of the press cuff and the depressurizing process.
  • the electrocardiographic measurement electrode is securely brought into contact with the user's wear site and sufficiently adheres to the user's wear site by the expansion of the press cuff. Therefore, the electrocardiogram in an appropriate wearing state can be measured, and an appropriate electrocardiogram measurement result can be obtained.
  • the cuff pressure control unit sets the duration of the pressurized state holding process to be equal to or longer than the measurement time required to obtain an electrocardiographic waveform useful for diagnosis.
  • the electrocardiogram in an appropriate wearing state can be measured, and an electrocardiographic waveform useful for diagnosis can be reliably obtained.
  • the cuff pressure control unit holds the pressure in the pressing cuff in the pressurized state holding process at a constant value.
  • the blood pressure calculating unit includes the pressure The blood pressure of the user is calculated based on the fluctuation of the pressure in the pressing cuff during the pressing process of the pressing cuff or the depressurizing process of the pressing cuff obtained from the information.
  • the electrocardiogram measurement unit includes an electrocardiogram detection information acquisition unit that acquires detection information representing a current value flowing through a user's heart between a pair of electrocardiogram measurement electrodes; A generating unit that generates an electrocardiographic waveform that reflects the detection information in the process of maintaining the pressurized state of the pressing cuff, based on the detection information acquired by the electrical detection information acquisition unit.
  • the electrocardiogram detection information acquisition unit acquires the detection information from the pressurization process to the decompression process
  • the generation unit generates an electrocardiographic waveform that reflects only the detection information obtained in the pressurized state holding process among the obtained detection information.
  • the electrocardiogram detection information acquisition unit acquires only the current value in the pressurized state holding process as the detection information.
  • the burden on the patient can be reduced by measuring the electrocardiogram only in an appropriate wearing state.
  • the electrocardiogram measurement electrode a first electrode disposed at a position where the measurement device is not in contact with the skin of the user's wear site in a state where the measurement device is worn by the user, and A second electrode disposed at a position in contact with the skin of the user's wear site in a state where the measurement device is worn by the user, wherein the electrocardiogram detection information acquisition unit includes, as the detection information, A current flowing between the first electrode and the second electrode via the heart of the user is detected.
  • the measurement device has a main body having a first surface on which a display unit is provided and a second surface serving as a back surface with respect to the first surface, and is pressurized while being worn by the user. And a pressing cuff capable of pressing the user's wearing site from the outside, wherein the first electrode is disposed on the first surface of the main body, and the second electrode is provided on the main body. It is arranged on the second surface.
  • the second electrode is attached to the user, and in a state where the pressing cuff is pressurized, the second electrode is pressed against the pressing cuff to be in close contact with the user's mounting site. I do.
  • a measuring device capable of appropriately measuring a blood pressure and an electrocardiogram.
  • FIG. 1 is a block diagram illustrating a functional configuration of a measuring device according to an application example.
  • FIG. 2 is a schematic view illustrating the configuration of the blood pressure measurement system including the measurement device according to the first embodiment.
  • FIG. 3 is a block diagram illustrating a hardware configuration of the measuring device according to the first embodiment.
  • FIG. 4 is a diagram illustrating the configuration of the measuring device according to the first embodiment.
  • FIG. 5 is a block diagram illustrating a functional configuration of a blood pressure measurement circuit as an example of the measurement device according to the first embodiment.
  • FIG. 6 is a flowchart illustrating a processing procedure of electrocardiography measurement by a blood pressure measurement system including a blood pressure measurement circuit as an example of the measurement device according to the first embodiment.
  • FIG. 1 is a block diagram illustrating a functional configuration of a measuring device according to an application example.
  • FIG. 2 is a schematic view illustrating the configuration of the blood pressure measurement system including the measurement device according to the first embodiment.
  • FIG. 3 is a
  • FIG. 7 is a schematic diagram illustrating a state in which the measurement device according to the first embodiment is attached to a user's attachment site and an electrocardiogram measurement process is not performed.
  • FIG. 8 is a schematic diagram illustrating a state in which the measurement device according to the first embodiment is mounted on a user's wear site and the pressing of the pressing cuff is stopped in the electrocardiographic measurement process.
  • FIG. 9 is a diagram illustrating an example of an acquisition result of an electrocardiographic waveform in the blood pressure measurement circuit as an example of the measurement device according to the first embodiment.
  • the blood pressure measurement device 1 is an example of a measurement device that can measure a user's blood pressure and electrocardiogram.
  • the blood pressure measurement device 1 is worn on a user's wear site.
  • the attachment site is, for example, a wrist, an upper arm, or the like.
  • the blood pressure measurement device 1 executes a side effect management process based on the side effect management program.
  • the side effect management processing program is an example of an electrocardiogram measurement program.
  • the blood pressure measurement device 1 includes a pressure acquisition unit 2, a pressure cuff control unit 3, a blood pressure calculation unit 4, an electrocardiogram measurement unit 5, and an output unit 6.
  • the pressure acquisition unit 2 acquires pressure information.
  • the pressure information includes the pressure in the pressing cuff (cuff pressure).
  • the pressure acquisition unit 2 acquires pressure information from, for example, a pressure sensor provided on the pressing cuff.
  • Pressing cuff control unit 3 controls the state of the pressing cuff based on the pressure information.
  • the press cuff control unit 3 controls the state of the press cuff by controlling, for example, a pump that supplies a fluid to the press cuff and an exhaust valve provided in the press cuff.
  • the pressing cuff control unit 3 expands the pressing cuff and pressurizes the pressing cuff, for example, by supplying a fluid from the pump to the pressing cuff.
  • the press cuff control unit 3 contracts the press cuff and reduces the pressure of the press cuff by, for example, discharging the fluid from the press cuff.
  • the pressing cuff controller 3 is an example of a cuff pressure controller.
  • the blood pressure calculation unit 4 calculates the blood pressure of the user based on the pressure information.
  • the calculation of the blood pressure by the blood pressure calculation unit 4 uses, for example, an oscillometric method.
  • the blood pressure calculation unit 4 calculates the blood pressure based on, for example, a change in the pressure in the pressing cuff during the pressing process of the pressing cuff.
  • the blood pressure calculation unit 4 may calculate the blood pressure based on, for example, a change in the pressure in the pressing cuff during the depressurizing process of the pressing cuff.
  • the blood pressure calculated by the blood pressure calculation unit 4 is a systolic blood pressure, a diastolic blood pressure, or another index.
  • the electrocardiogram measuring unit 5 measures the user's electrocardiogram based on the detection information.
  • the detection information includes, for example, a current value flowing through the user's heart between the pair of electrocardiographic measurement electrodes.
  • the electrocardiogram measurement unit 5 generates an electrocardiogram waveform based on the detection information.
  • the electrocardiogram measuring unit 5 sets a pressurized state holding process between the pressurizing process of the press cuff and the depressurizing process of the press cuff.
  • the electrocardiogram measuring unit 5 generates an electrocardiographic waveform generated based on the detection information in the pressurized state holding process as electrocardiographic information.
  • the pressurized state holding process is started after the pressurizing process is completed, and is ended before the depressurized process is started. That is, the electrocardiogram measurement unit 5 measures the user's electrocardiogram from the time when the pressing of the pressing cuff is stopped to the time when the depressing of the pressing cuff is started.
  • the electrocardiogram measuring unit 5 holds the pressure in the pressing cuff at a constant value in the pressing state holding process. That is, the electrocardiograph 5 maintains the press cuff in a pressurized state in the pressurized state holding process.
  • the electrocardiograph 5 performs control to maintain the pressure in the press cuff at the pressure at the end of the pressurizing process.
  • the duration of the pressurized state holding process is set to, for example, a measurement time or more necessary to obtain an electrocardiographic waveform useful for diagnosis.
  • the electrocardiogram measurement unit 5 obtains, for example, detection information from the pressurization process to the depressurization process through the pressurization state holding process, and obtains the detection information from the obtained detection information in the pressurization state holding process. An electrocardiographic waveform reflecting only the detected information is generated. In another example, the electrocardiogram measurement unit 5 acquires, for example, only detection information in a pressurized state holding process, and generates an electrocardiogram waveform reflecting the acquired detection information.
  • the output unit 6 outputs the blood pressure information calculated by the blood pressure calculation unit 4 and the electrocardiogram information generated by the electrocardiogram measurement unit 5. Thereby, the measurement result of the blood pressure and the measurement result of the electrocardiogram are displayed on the display device.
  • the pressurization process of the press cuff is started in a state where the blood pressure measurement device 1 is worn on the user's wear site.
  • the pressure cuff expands as pressure is applied, and presses the user's wearing site.
  • the pressurization of the press cuff is stopped in a state in which the user's wearing site is sufficiently pressed by the press cuff, and the pressurizing process ends.
  • the electrocardiographic measuring electrode is pressed from the outside toward the user's mounting site by the inflated pressing cuff, so that the electrocardiographic measuring electrode is applied to the user's mounting site. Make sure they are in close contact with each other.
  • the electrocardiographic measurement electrode does not sufficiently adhere to the user's wearing site.
  • the electrocardiogram is measured in a pressurized state holding process in which the press cuff is held in a pressurized state.
  • the pressing cuff is held pressurized, and the expansion of the pressing cuff ensures that the electrocardiographic measurement electrode is securely placed on the user's wearing site. It comes into contact with and adheres well. Therefore, the blood pressure measurement device 1 can measure the electrocardiogram in an appropriate wearing state. As a result, an appropriate ECG measurement result can be obtained.
  • FIG. 2 is a diagram schematically illustrating an example of an application scene of the blood pressure measurement system according to the present embodiment.
  • the blood pressure measurement system according to the present embodiment is a system that displays a blood pressure measurement result, an electrocardiogram measurement result, and other information on a display screen.
  • the blood pressure measurement system includes the blood pressure measurement device 10.
  • the blood pressure measurement device 10 is an example of a measurement device.
  • the blood pressure measurement system further includes a portable terminal 11, a doctor terminal 12, and a server 13.
  • a plurality of each of the blood pressure measurement device 10 and the mobile terminal 11 may be provided.
  • the blood pressure measurement device 10 and the portable terminal 11 are connected by short-range wireless communication or wired communication.
  • the mobile terminal 11 can be connected to the server 13 via the network NW.
  • the mobile terminal 11 may be further connected to the doctor terminal 12 via the network NW.
  • the doctor terminal 12 and the server 13 can be connected via a network NW such as the Internet.
  • a plurality of doctor terminals 12 may be provided.
  • the communication between the doctor terminal 12 and the server 13 may be short-range wireless communication or wired communication without using the network NW.
  • the blood pressure measurement device 10 can be connected to the server 13 (and the doctor terminal 12) via the mobile terminal 11. That is, the blood pressure measurement device 10 can communicate with the server 13 (and the doctor terminal 12) via the mobile terminal 11.
  • the blood pressure measurement device 10 is a device that can be attached to any measurement location.
  • the measurement location is, for example, a wrist, an upper arm, or the like.
  • the blood pressure measurement device 10 can measure a user's blood pressure value at a measurement location.
  • the blood pressure measurement device 10 can transmit the blood pressure information including the measurement result of the blood pressure value to the mobile terminal 11.
  • the blood pressure measurement device 10 can measure a user's electrocardiographic waveform.
  • the blood pressure measurement device 10 can transmit electrocardiographic information including the measured electrocardiographic waveform to the mobile terminal 11.
  • the blood pressure measurement device 10 has a clock function, and can transmit the blood pressure information and the electrocardiogram information to the mobile terminal 11 in association with the measurement date and time.
  • the mobile terminal 11 is, for example, a terminal that can be carried by a user.
  • the mobile terminal 11 receives the blood pressure information and the electrocardiographic information from the blood pressure measurement device 10.
  • the mobile terminal 11 can store the received blood pressure information and electrocardiogram information together with the measurement date and time, for example.
  • the mobile terminal 11 can appropriately transfer the stored blood pressure information and electrocardiogram information to the server 13 in association with the measurement date and time.
  • the doctor terminal 12 is a terminal that can be operated by an administrator such as a doctor.
  • An administrator such as a doctor examines the user, for example, and diagnoses the condition of the user based on test data and the like.
  • the doctor terminal 12 can receive test data from a test device (not shown) in the hospital or the like and present it to the administrator.
  • diagnostic information on the user is input by an operation of the administrator.
  • the doctor terminal 12 can transmit the input diagnosis information to the server 13.
  • the server 13 is a server computer that stores information transmitted from the portable terminal 11, the doctor terminal 12, and the like.
  • the stored information is stored, for example, as an electronic medical record.
  • FIG. 3 is a block diagram illustrating an example of a hardware configuration of the blood pressure measurement device 10 according to the present embodiment.
  • the blood pressure measurement device 10 includes a control unit 21, a storage unit 22, a communication unit 23, an operation unit 24, a display unit 25, a pressing cuff 26, a pump 27, a pressure sensor 28, a battery, 29, a first electrode 30, a second electrode 31, and a detection circuit 32.
  • the blood pressure measurement device 10 may further include an acceleration sensor, a temperature and humidity sensor, and the like.
  • the control unit 21 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and controls each component according to information processing.
  • the control unit 21 includes a clock (not shown) and has a function of acquiring the current date and time.
  • the control unit 21 may have a function of displaying the acquired date and time on the display unit 25.
  • the control unit 21 expands and contracts the pressing cuff 26 by driving the pump 27. Further, the control unit 21 controls opening and closing of an exhaust valve provided in the pressing cuff 26. Further, the control unit 21 supplies electric energy from the battery 29 to each of the first electrode 30 and the second electrode 31, and applies different voltages to the first electrode 30 and the second electrode 31. Further, the control unit 21 generates blood pressure information and electrocardiographic information based on the measurement results obtained by the pressure sensor 28 and the detection circuit 32.
  • the blood pressure information includes, for example, the blood pressure value of the user.
  • the electrocardiographic information includes an electrocardiographic waveform and the like. Each of the blood pressure information and the electrocardiographic information is associated with a measurement date and time based on the current date and time acquired by the clock. Further, each of the blood pressure information and the electrocardiographic information may be further associated with a device ID that uniquely identifies the blood pressure measurement device 10.
  • the control unit 21 executes an electrocardiogram measurement process based on the electrocardiogram measurement program.
  • the electrocardiogram measurement processing by the control unit 21 will be described later.
  • the electrocardiogram measurement program is a program for causing the control unit 21 to execute an electrocardiogram measurement process.
  • the electrocardiogram measurement program is stored in the storage unit 22, for example.
  • the electrocardiogram measurement program is an example of a measurement program.
  • the storage unit 22 is, for example, an auxiliary storage device such as a solid state drive.
  • the storage unit 22 may be a hard disk drive.
  • the storage unit 22 stores programs executed by the control unit 21, blood pressure information, electrocardiographic information, setting information, and the like.
  • the communication unit 23 is a communication interface that manages communication with the mobile terminal 11.
  • the communication unit 23 transmits, for example, blood pressure information, pulse information, electrocardiographic information, and the like to the mobile terminal 11.
  • the communication with the mobile terminal 11 by the communication unit 23 may be, for example, short-range wireless communication such as Bluetooth (registered trademark), but is not limited thereto.
  • the communication by the communication unit 23 may be, for example, communication via a network NW such as a LAN (Local Area Network) or wired communication using a communication cable.
  • NW Local Area Network
  • the operation unit 24 includes, for example, a user interface such as a touch panel and operation buttons.
  • the operation unit 24 detects an operation performed by the user via the user interface, and outputs a signal indicating the content of the operation to the control unit 21.
  • the display unit 25 includes, for example, a display screen (for example, an LCD (Liquid Crystal Display) or an EL (Electroluminescence) display) and an indicator.
  • the display unit 25 displays information according to a signal from the control unit 21 and notifies the user.
  • the display unit 25 can display, for example, a blood pressure value, an electrocardiographic waveform, and the like.
  • the display unit 25 is an example of a display device.
  • the pressing cuff 26 is, for example, a band-shaped air bag.
  • the pressing cuff 26 presses the user's attachment site from outside by supplying the fluid.
  • the pump 27 is, for example, a piezoelectric pump.
  • the pump 27 can supply a fluid to the pressing cuff 26.
  • the fluid supplied from the pump 27 to the pressing cuff 26 is, for example, air.
  • the pump 27 is equipped with an exhaust valve whose opening and closing are controlled according to the state of the pump 27.
  • the exhaust valve is closed when the pump 27 is in the on state, and seals air in the pressing cuff 26.
  • the exhaust valve opens when the pump 27 is off, and discharges the air in the pressing cuff 26 to the atmosphere. Further, the exhaust valve has a check valve function. Therefore, the air discharged from the inside of the pressing cuff 26 is prevented from flowing backward.
  • the pressure sensor 28 is, for example, a piezoresistive pressure sensor.
  • the pressure sensor 28 detects the pressure in the pressing cuff 26 via a flexible tube.
  • Pressure sensor 28 outputs a detection result to control unit 21.
  • the control unit 21 calculates the blood pressure value of the user based on the pressure in the pressing cuff 26 detected by the pressure sensor 28.
  • the blood pressure value includes a representative index such as a systolic blood pressure and a diastolic blood pressure.
  • the control unit 21 calculates the user's blood pressure in a spot (non-continuous) manner at a predetermined time, for example, based on the detection result of the pressure sensor 28.
  • the control unit 21 generates, for example, time-series data of the pressure value using the detection result of the pressure sensor 28, and calculates the blood pressure of the user at a predetermined time based on the time-series data of the pressure value.
  • the pressure sensor 28 is an example of a non-continuous measurement type blood pressure sensor.
  • a method (oscillometric method) of detecting a pulse wave by compressing a blood vessel using the pressing cuff 26 as a pressure sensor is applicable to the discontinuous measurement type blood pressure sensor.
  • the battery 29 is, for example, a rechargeable secondary battery.
  • the battery 29 stores power to be supplied to each element mounted on the blood pressure measurement device 10.
  • the battery 29 includes, for example, the control unit 21, the storage unit 22, the communication unit 23, the operation unit 24, the display unit 25, the pressing cuff 26, the pump 27, the pressure sensor 28, the battery 29, the first electrode 30, the second electrode 31, Then, power is supplied to the detection circuit 32.
  • the first electrode 30 and the second electrode 31 are electrodes used for measuring an electrocardiographic waveform.
  • the first electrode 30 and the second electrode 31 function as electrodes having different potentials from each other when power is supplied from the battery 29.
  • the first electrode 30 and the second electrode 31 pass through the heart of the user, A current flows between the electrode 30 and the second electrode 31.
  • Each of the first electrode 30 and the second electrode 31 is an example of an electrocardiographic measurement electrode.
  • the first electrode 30 is provided in a part of the blood pressure measurement device 10 that is exposed to the outside when the blood pressure measurement device 10 is worn by a user.
  • the first electrode 30 is located at a position where the user can operate the blood pressure measurement device 10 in a state where the blood pressure measurement device 10 is worn on the wear site.
  • the first electrode 30 does not come into contact with the skin of the wear site of the user when the blood pressure measurement device 10 is worn by the user.
  • the user presses the first electrode 30 with a finger using an arm opposite to the arm on which the blood pressure measurement device 10 is worn.
  • the second electrode 31 is provided in the blood pressure measuring device 10 at a position facing the skin of the mounted portion in a state where the blood pressure measuring device 10 is mounted on the mounted portion.
  • the second electrode 31 is disposed at a position where the second electrode 31 comes into contact with the skin of the user's wear site when the blood pressure measurement device 10 is worn by the user.
  • the detection circuit 32 detects a current flowing between the first electrode 30 and the second electrode 31 via the heart of the user.
  • the detection circuit 32 outputs an electric signal indicating the current value of the detected current to the control unit 21.
  • the first electrode 30, the second electrode 31, and the detection circuit 32 are examples of an electrocardiographic sensor.
  • the first electrode 30 and the second electrode 31 are examples of an electrocardiographic measurement electrode.
  • FIG. 4 is a perspective view illustrating an example of the structure of the blood pressure measurement device 10.
  • the blood pressure measurement device 10 is a wristwatch-type wearable device that is worn on the wrist of the user.
  • the blood pressure measurement device 10 includes a main body 41, a belt 42, a cuff unit 43, a conductor 44, and a conductor 45.
  • the wrist is an example of a worn part.
  • the conductor 44 and the conductor 45 function as electrodes for measuring electrocardiogram.
  • the main body 41 has, for example, a substantially short cylindrical shape.
  • a pair of belts 42 is attached to a side surface of the main body 41.
  • One end of each of the pair of belts 42 is attached to a side surface of the main body 41.
  • the pair of belts 42 are connected to opposite side surfaces of the main body 41 with respect to each other.
  • the main body 41 is configured to be able to mount a plurality of components of the blood pressure measurement device 10.
  • the main body 41 includes, for example, a control unit 21, a storage unit 22, a communication unit 23, an operation unit 24, a display unit 25, a battery 29, a first electrode 30, a second electrode 31, and a detection circuit. 32 are mounted.
  • the main body 41 has a front surface 41A and a back surface 41B.
  • the front surface 41A and the back surface 41B face opposite sides with respect to each other.
  • the blood pressure measurement device 10 is worn on the wrist of the user with the surface 41A facing outward.
  • back surface 41B faces inward and faces the skin of the user's wrist.
  • the surface 41A is an example of a first surface.
  • the back surface 41B is an example of a second surface.
  • a display screen is provided on the surface 41A, for example.
  • the front surface 41A functions as the display unit 25.
  • the display screen is, for example, an LCD (Liquid Crystal Display).
  • the display screen may be an organic EL (Electro Luminescence) display. Further, the display screen may include an LED (Light Emitting Diode).
  • the display screen only has to have a function of displaying various information, and is not limited thereto.
  • a plurality of push buttons 46 are provided on the side surface of the main body 41.
  • the push button 46 functions as the operation unit 24.
  • Various instructions to the blood pressure measurement device 10 are input to the push button 46. For example, an instruction to start blood pressure measurement is input to one of the push buttons 46. Further, for example, an instruction to start the blood pressure measurement and the electrocardiography measurement is input to another certain one of the push buttons 46.
  • the blood pressure measurement device 10 may include a pressure-sensitive (resistance) or proximity (capacitance) touch panel switch as the operation unit 24 instead of the push button 46.
  • the operation unit 24 is only required to have a function of inputting various instructions to the blood pressure measurement device 10, and is not limited thereto.
  • the belt 42 is configured to be wrapped around the user's wrist from outside.
  • the belt 42 includes a first belt portion 47 and a second belt portion 48.
  • the first belt portion 47 and the second belt portion 48 are formed in a belt shape.
  • the first belt portion 47 and the second belt portion 48 are formed of, for example, a resin material and have flexibility.
  • One end of the first belt portion 47 is rotatably connected to a side surface of the main body 41.
  • a fastening member is attached to the other end of the first belt portion 47.
  • One end of the second belt portion 48 is rotatably connected to the side of the main body 41 opposite to the side to which the first belt portion 47 is connected.
  • the first belt portion 47 and the second belt portion 48 are fastened. By fastening the first belt portion 47 and the second belt portion 48, the blood pressure measurement device 10 is worn on the wrist of the user.
  • the belt 42 has an outward surface 42A and an inward surface 42B.
  • the outward surface 42A and the inward surface 42B face opposite sides of each other.
  • the outward surface 42A of the belt 42 faces outward.
  • the inward surface 42B of the belt 42 faces inward.
  • the cuff unit 43 is a band-shaped air bag. One end of the cuff unit 43 is rotatably attached to a side surface of the main body 41. The cuff unit 43 is arranged to face the inward surface 42B of the belt 42. The other end of the cuff unit 43 is a free end. Therefore, the cuff unit 43 can be freely separated from the inner peripheral surface of the belt 42. When the blood pressure measurement device 10 is worn on the wrist H of the user, the cuff unit 43 extends between the inward surface 42B of the belt 42 and the wrist of the user.
  • the cuff unit 43 functions as the pressing cuff 26.
  • the cuff unit 43 is connected to the pump 27 via a flexible tube, for example. Fluid is supplied to the cuff unit 43 from the main body 41 through a flexible tube. The fluid is, for example, air.
  • the cuff unit 43 expands when a fluid is supplied from the pump 27 of the main body 41.
  • the cuff unit 43 contracts by discharging air from the cuff unit 43.
  • fluid is supplied to the cuff unit 43 in a state where the blood pressure measurement device 10 is mounted, the wrist of the user is pressed by the expansion of the cuff unit 43.
  • the cuff unit 43 has an outward surface 43A and an inward surface 43B.
  • Inward surface 43B faces the opposite side to outward surface # 43A.
  • the outward surface 43A of the cuff unit 43 faces the inward surface 42B of the belt 42.
  • the inward face 43B faces the skin of the wrist when the blood pressure measurement device 10 is worn on the wrist. That is, in the blood pressure measurement device 10, a part of the inward surface 43B forms a part of a part of the blood pressure measuring device 10 that faces the skin of the mounted part in a state of being mounted on the mounted part. Therefore, in the example of FIG. 4, when the blood pressure measurement device 10 is mounted, the back surface 41B of the main body 41 and the inward surface 43B of the cuff unit 43 face the skin of the user's wrist.
  • the conductor 44 is attached to the surface 41A of the main body 41.
  • the conductor 44 has electrical conductivity.
  • the conductor 44 is electrically connected to the battery 29 inside the main body 41.
  • the conductor 44 functions as the first electrode 30 when power is supplied from the battery 29.
  • the first electrode 30 may be disposed at a position where the first electrode 30 is exposed to the outside in a state where the blood pressure measurement device 10 is mounted on a portion to be mounted. Therefore, the conductor 44 may be arranged on, for example, the side surface of the main body 41 or the outward surface 42A of the belt 42.
  • the conductor 45 is attached to the back surface 41B of the main body 41.
  • the conductor 45 has electrical conductivity.
  • the conductor 45 is electrically connected to the battery 29 inside the main body 41.
  • the conductor 45 functions as the second electrode 31 when power is supplied from the battery 29.
  • the second electrode 31 only needs to be arranged at a position facing the skin of the mounting site in a state where the blood pressure measurement device 10 is mounted on the mounting site. Therefore, the conductor 45 may be arranged on the inward surface 43B of the cuff unit 43, for example.
  • FIG. 5 is a block diagram schematically illustrating an example of a functional configuration of the blood pressure measurement apparatus 10 of the blood pressure measurement system according to the present embodiment.
  • the control unit 21 of the blood pressure measurement device 10 loads the electrocardiogram measurement program stored in the non-volatile memory of the storage unit 22 to the volatile memory of the storage unit 22. Then, the control unit 21 interprets and executes the electrocardiogram measurement program developed in the volatile memory, so that the pressure acquisition unit 61, the blood pressure calculation unit 62, the pressing cuff control unit 63, the power control unit 64, the current acquisition unit 65, functions as an electrocardiographic waveform generation unit 66 and an output unit 67.
  • the volatile memory of the storage unit 22 functions as a pressure information storage unit 71, a detection information storage unit 72, a blood pressure information storage unit 73, an electrocardiogram information storage unit 74, and a setting information storage unit 75.
  • the pressure information storage unit 71 stores pressure information.
  • the pressure information includes the pressure in the pressing cuff 26 detected by the pressure sensor 28.
  • the detection information storage unit 72 stores the detection information detected by the detection circuit 32.
  • the detection information includes a current value flowing between the first electrode 30 and the second electrode 31.
  • the blood pressure information storage unit 73 stores blood pressure information.
  • the blood pressure information includes a blood pressure value.
  • the blood pressure value is a systolic blood pressure, a diastolic blood pressure, or another index.
  • the blood pressure information can include a measurement date and time and a measurement location for each blood pressure value.
  • the electrocardiogram information storage section 74 stores electrocardiogram information.
  • the electrocardiographic information includes electrocardiographic waveform display data and the like.
  • the setting information storage unit 75 stores setting information used for the electrocardiogram measurement process.
  • the setting information includes a threshold value used for the electrocardiogram measurement processing.
  • the pressure acquiring unit 61 acquires the pressure (cuff pressure) in the pressing cuff 26.
  • the pressure acquisition unit 61 acquires the pressure in the pressing cuff 26 from the pressure sensor 28, for example.
  • the pressure acquisition unit 61 stores the acquired pressure as pressure information in the pressure information storage unit 71 of the storage unit 22.
  • the blood pressure calculation unit 62 calculates a blood pressure value based on the pressure information acquired by the pressure acquisition unit 61.
  • Blood pressure values are, for example, systolic blood pressure, diastolic blood pressure, and other indices.
  • the blood pressure calculation unit 62 calculates the blood pressure value using the oscillometric method based on the pressure fluctuation at the time of compression of the wearing part, that is, from the pressure fluctuation in the pressing process or the depressurizing process of the pressing cuff 26.
  • the blood pressure calculation unit 62 stores the calculated blood pressure value as blood pressure information in the blood pressure information storage unit 73 of the storage unit 22.
  • the pressure cuff control unit 63 controls the state of the pressure cuff 26 based on the pressure information acquired by the pressure acquisition unit 61.
  • the press cuff control unit 63 controls the amount of fluid supplied to the press cuff 26 by, for example, controlling the drive of the pump 27.
  • the pressing cuff controller 63 is an example of a cuff pressure controller.
  • the power control unit 64 controls the power supplied from the battery 29 to the first electrode 30 and the second electrode 31.
  • the power control unit 64 may control the power supplied to the first electrode 30 and the second electrode 31 based on the pressure information acquired by the pressure acquisition unit 61.
  • the current acquisition unit 65 acquires detection information.
  • the detection information includes, for example, the current value of the current detected by the detection circuit 32.
  • the current acquisition unit 65 stores the acquired detection information in the detection information storage unit 72 of the storage unit 22.
  • the current acquisition unit 65 is an example of an electrocardiogram detection information acquisition unit.
  • the current acquisition unit 65 is an example of an electrocardiogram measurement unit.
  • the electrocardiogram waveform generation unit 66 generates electrocardiogram waveform display data based on the pressure information acquired by the pressure acquisition unit 61 and the detection information acquired by the current acquisition unit 65.
  • the electrocardiogram waveform display data is image data to be displayed on the display unit 25.
  • the electrocardiogram waveform display data is stored in the electrocardiogram information storage section 74 of the storage section 22 as electrocardiogram information.
  • the electrocardiogram waveform generator 66 is an example of a generator.
  • the electrocardiogram waveform generation unit 66 is an example of an electrocardiogram measurement unit.
  • the electrocardiogram waveform generator 66 sets the electrocardiogram measurement time.
  • the electrocardiogram measurement time is a time between the end of the pressurization process of the pressing cuff 26 and the start of the decompression process in the electrocardiogram measurement process.
  • the electrocardiographic waveform generation unit 66 sets a pressurized state holding process between the pressurizing process and the depressurizing process.
  • the electrocardiogram measurement time is, for example, a measurement time required to obtain an electrocardiographic waveform useful for diagnosis.
  • the electrocardiogram measurement time is, for example, 10 seconds.
  • the electrocardiogram measurement time is an example of the duration of the pressurized state holding process.
  • the electrocardiogram measurement time is stored in, for example, the setting information storage unit 75 of the storage unit 22.
  • the electrocardiographic waveform generation unit 66 acquires detection information from the pressurizing process to the depressurizing process.
  • the electrocardiogram waveform generation unit 66 determines that the detection results in the pressurizing process and the depressurizing process among the acquired detection information are noise. Then, the electrocardiogram waveform generation unit 66 generates electrocardiogram waveform display data excluding the detection result determined to be noise. For this reason, for example, the detection results of the detection circuit 32 in the pressurizing process and the depressurizing process of the pressing cuff 26 are not reflected on the electrocardiogram waveform display data. Therefore, the electrocardiogram waveform generation unit 66 generates electrocardiogram waveform display data based only on the current value detected by the detection circuit 32 during the pressurized state holding process.
  • the output unit 67 outputs the blood pressure information calculated by the blood pressure calculation unit 62 to the display unit 25, and causes the display unit 25 to display the measurement result of the blood pressure.
  • the output unit 67 outputs the electrocardiogram waveform display data generated by the electrocardiogram waveform generation unit 66 to the display unit 25, and causes the display unit 25 to display the electrocardiogram measurement result.
  • FIG. 6 is a flowchart illustrating an example of a procedure of a process performed by the control unit 21 of the blood pressure measurement device 10 in an electrocardiogram measurement using the blood pressure measurement system according to the present embodiment.
  • the control unit 21 may, for example, determine that the heart rate is to be measured by inputting an instruction to start measuring the electrocardiogram on the operation unit 24 of the blood pressure measurement device 10 in a state where the blood pressure measurement device 10 is mounted on the wear site of the user.
  • the electric measurement process is started.
  • the blood pressure and electrocardiogram of the user are measured, and the measurement result of the blood pressure and the electrocardiogram are displayed on the display unit 25.
  • FIGS. 7 and 8 are views showing a state in which the blood pressure measurement device 10 shown in an example of FIG.
  • FIG. 7 shows a state where the pressing cuff 26 is not inflated in the electrocardiographic measurement process.
  • FIG. 8 shows a state where the pressing cuff 26 is inflated in the electrocardiographic measurement process.
  • the wrist H is an example of a worn part.
  • the control unit 21 first starts supplying power to the first electrode 30 and the second electrode 31 (S101). At this time, the control unit 21 may cause the display unit 25 to display a display prompting the user to perform an electrocardiographic measurement operation, for example.
  • the control unit 21 causes the display unit 25 to display, for example, "Please start the electrocardiographic measurement” or "Press the measurement button” as a display urging the user to perform an electrocardiographic measurement operation.
  • an electrocardiographic measurement operation may be prompted by using a sound, a lighting display, or the like.
  • the user brings the finger of the arm on which the blood pressure measurement device 10 is not worn into contact with the first electrode 30 while the blood pressure measurement device 10 is worn on the wear site.
  • An electric current flows between the first electrode 30 and the second electrode 31 via the user's heart by performing the electrocardiographic measurement operation in a state where the second electrode 31 is appropriately in contact with the skin of the user's wearing site.
  • the detection circuit 32 detects a current flowing between the first electrode 30 and the second electrode 31, and outputs the current to the control unit 21.
  • control unit 21 determines whether or not an electrocardiographic measurement operation has been performed by the user (S102). Thereby, the control unit 21 determines whether or not an operation for starting the measurement of the electrocardiogram has been performed. The control unit 21 waits until an electrocardiographic measurement operation is performed. For example, the control unit 21 determines that an electrocardiographic measurement operation has been performed based on the fact that the current waveform detected by the detection circuit 32 has exhibited a predetermined behavior.
  • the control unit 21 starts pressurizing the pressing cuff 26 (S103). At this time, the control unit 21 starts pressurizing the pressing cuff 26 by starting supply of air from the pump 27 to the pressing cuff 26. Thus, the pressing process of the pressing cuff 26 starts.
  • the control unit 21 determines whether or not the pressure P detected by the pressure sensor 28 is equal to or greater than the first threshold value Pth1 (S104). That is, the control unit 21 determines whether the pressure in the pressing cuff 26 is equal to or higher than a predetermined value.
  • the first threshold value Pth1 is a predetermined pressure value when the pressurization of the press cuff 26 ends in the measurement of blood pressure.
  • the first threshold value Pth1 is stored in, for example, the setting information storage unit 75 of the storage unit 22.
  • the control unit 21 repeats the determination of S104. That is, the control unit 21 continues to pressurize the pressing cuff 26 until the pressure in the pressing cuff 26 becomes equal to or more than the predetermined value.
  • the control unit 21 determines that the user's wrist H is sufficiently pressed by the pressing cuff 26.
  • the control part 21 stops pressurization of the press cuff 26 (S105).
  • the control unit 21 stops the pressurization of the pressing cuff 26 by stopping the supply of air from the pump 27 to the pressing cuff 26.
  • the pressing process of the pressing cuff 26 ends.
  • the conductor 45 contacts the user's wrist H with sufficient adhesion strength. That is, when the pressing cuff 26 is sufficiently pressurized, the second electrode 31 appropriately contacts the user's mounting site.
  • control unit 21 sets the time when the pressure P is determined to be equal to or greater than the first threshold value Pth1, that is, the reference time T0 (S106).
  • the reference time T0 is the time at the end of the pressing process of the pressing cuff 26.
  • the control unit 21 continuously acquires the elapsed time dT from the reference time T0.
  • the control unit 21 determines whether or not the elapsed time dT is equal to or greater than the threshold value Tth (S107).
  • the threshold value Tth is an example of an electrocardiogram measurement time, and is an example of a duration time of the pressurized state holding process.
  • the threshold value Tth is stored, for example, in the setting information storage unit 75 of the storage unit 22.
  • the control unit 21 determines whether or not the electrocardiogram measurement time has elapsed in the pressurized state holding process by determining whether or not the elapsed time dT is equal to or greater than the threshold value Tth. In the pressurized state holding process, the state where the second electrode 31 is appropriately in contact with the user's attachment site is maintained.
  • the control unit 21 repeats the determination of S107. That is, the control unit 21 waits until the electrocardiogram measurement time elapses in the pressurized state holding process.
  • the control unit 21 determines that the electrocardiographic measurement time has elapsed in the pressurized state holding process. Then, the control unit 21 starts reducing the pressure of the pressing cuff 26 (S108). At this time, the control unit 21 starts decompression of the pressing cuff 26 by causing air to flow out from the pressing cuff 26. Thus, the pressure-reducing process of the pressing cuff 26 starts. As the air flows out of the pressing cuff 26, the pressing cuff 26 contracts from the expanded state, and accordingly, the pressure on the user's wrist H from the pressing cuff 26 is reduced.
  • the controller 21 determines whether or not the pressure P detected by the pressure sensor 28 is equal to or less than a second threshold value Pth2 (S109). That is, the control unit 21 determines whether the pressure in the pressing cuff 26 is equal to or less than a predetermined value.
  • the second threshold value Pth2 is a predetermined pressure value at the time of ending the pressure reduction process of the pressing cuff 26 in the measurement of the blood pressure.
  • the second threshold value Pth2 is stored in, for example, the setting information storage unit 75 of the storage unit 22.
  • the control unit 21 repeats the determination of S109. That is, the control unit 21 continues to reduce the pressure of the pressing cuff 26 until the pressure in the pressing cuff 26 becomes equal to or less than the predetermined value.
  • the control unit 21 stops reducing the pressure of the pressing cuff 26 (S110). At this time, the control unit 21 stops depressurization of the pressing cuff 26 by stopping outflow of air from the pressing cuff 26. Thereby, the pressure reduction process of the pressing cuff 26 ends.
  • the controller 21 calculates a blood pressure value based on the pressure P in the pressing cuff 26 detected by the pressure sensor 28 (S111).
  • the control unit 21 calculates the systolic blood pressure and the diastolic blood pressure by the oscillometric method, for example, based on the fluctuation of the pressure P in the pressing cuff 26 obtained from S103 to S110.
  • the control unit 21 may calculate another index such as an average value or a representative value of the blood pressure based on the systolic blood pressure and the diastolic blood pressure.
  • the control unit 21 stores the calculated blood pressure value in the blood pressure information storage unit 73 of the storage unit 22.
  • the blood pressure calculation process in S111 may be continuously performed during a period from the start of the pressurizing process of the press cuff 26 (S103) to the end of the depressurizing process of the press cuff 26 (S110). Further, the calculation process of the blood pressure in S111 may be performed based only on the detection result of the pressure P in the pressing cuff 26 in the pressing process of the pressing cuff 26, and may be performed in the pressing cuff 26 in the pressing process of the pressing cuff 26. It may be performed based on only the detection result of the pressure P.
  • the control unit 21 generates electrocardiogram waveform display data (S112).
  • the control unit 21 generates electrocardiogram waveform display data using only the detection results obtained by the detection circuit 32 from the time when the pressing of the pressing cuff 26 is stopped to the time when the pressing of the pressing cuff 26 is started to reduce the pressure.
  • the control unit 21 determines, for example, among the detection results of the detection circuit 32 from the start of pressurization (S103) to the end of depressurization (S111), the detection results in the pressurization process and pressurization process of the press cuff 26 as noise. Is determined, and electrocardiographic waveform display data reflecting only the detection result in the pressurized state holding process is generated.
  • the control unit 21 stores the generated electrocardiogram waveform display data in the electrocardiogram information storage unit 74 of the storage unit 22 as a measurement result of the electrocardiogram measurement.
  • control unit 21 causes the display unit 25 to display the measurement result of the blood pressure measurement and the measurement result of the electrocardiography measurement (S113).
  • the control unit 21 causes the display unit 25 to display, for example, the systolic blood pressure and the diastolic blood pressure calculated in the blood pressure calculation (S111) as the blood pressure measurement result.
  • the control unit 21 causes the display unit 25 to display the electrocardiogram waveform display data generated in the generation of the electrocardiogram waveform display data (S112) as a measurement result of the electrocardiogram measurement, for example.
  • FIG. 9 is a diagram illustrating an example of a detection result by the detection circuit 32 in the electrocardiographic measurement process illustrated in the example of FIG.
  • the detection result by the detection circuit 32 includes the electrocardiogram waveform A.
  • the horizontal axis of the electrocardiographic waveform A is time T.
  • the vertical axis of the electrocardiographic waveform A is the current I.
  • the electrocardiographic waveform A has a first area A1, a second area A2, and a third area A3.
  • the first area A1 is based on a detection result in the pressurization process.
  • the second area A2 is based on the detection result in the pressurized state holding process.
  • the third area A3 is based on the detection result in the pressure reduction process.
  • an electrocardiogram waveform (first region A1) based on the detection result of the pressurization process of the pressing cuff 26 and an electrocardiogram waveform based on the detection result of the depressurization process of the pressing cuff 26 It is preferable that the (third region A3) fluctuates unstablely and is regarded as noise.
  • an appropriate measurement result can be obtained in a state where the electrode is appropriately pressed against the skin of the attachment site.
  • the electrocardiographic waveform (second region A2) based on the detection result in the period from the end of the pressurizing process of the press cuff 26 to the start of the depressurizing process, such as the pressurizing state holding process, is shown in FIG. As shown in one example, it is relatively stable and can be used as an appropriate detection result.
  • a pressurized state holding process is provided after the pressurizing process of the pressing cuff 26 and before the depressurizing process.
  • Electrocardiogram waveform display data reflecting the detection result of the detection circuit 32 in the pressurized state holding process is generated.
  • the detection result of the detection circuit 32 is acquired in a state where the second electrode 31 is appropriately pressed against the skin of the user's wear site by the expansion of the press cuff 26. That is, according to the present embodiment, a state in which the electrocardiographic measurement electrode is appropriately in contact with the user's wear site is generated, and the electrocardiographic measurement electrode is appropriately in contact with the user's wear site. A measurement can be made.
  • the detection results of the detection circuit 32 from the pressurizing process to the depressurizing process of the pressing cuff 26 are obtained. Further, among the obtained detection results, it is determined that the detection results in the pressurizing process and the depressurizing process of the pressing cuff 26 are noise. Then, electrocardiographic waveform display data is generated using only the detection result excluding the pressurizing process and the depressurizing process of the pressing cuff 26. As a result, only electrocardiographic data reflecting only the detection result in the pressurized state holding process is displayed on the display unit as the electrocardiographic measurement result. Therefore, according to the present embodiment, it is possible to display a detection result in a state where the electrocardiographic waveform is stable, that is, an electrocardiographic waveform reflecting only electrocardiographic data useful for diagnosis.
  • the electrocardiogram may be measured only in a state where the second electrode 31 of the blood pressure measurement device 10 is appropriately in contact with the user's wear site.
  • the control unit 21 starts pressurizing the pressing cuff 26 without supplying power to the first electrode 30 and the second electrode 31 and without performing detection by the detection circuit 32.
  • a display instructing the user to perform an electrocardiographic measurement operation is displayed on the display unit 25.
  • supply of power to the first electrode 30 and the second electrode 31 is started, and detection by the detection circuit 32 is started.
  • the supply of power to the first electrode 30 and the second electrode 31 is stopped and the depressurization of the press cuff 26 is started based on the lapse of the electrocardiogram measurement time after the input of the electrocardiogram measurement operation. .
  • the measurement of the electrocardiogram is started after the pressurization of the press cuff 26 is stopped, and the depressurization of the press cuff 26 is started after the elapse of the electrocardiographic measurement time, so that the pressurization of the press cuff 26 is stopped.
  • the detection result of the detection circuit 32 is obtained only during the period from the subsequent time to the start of pressure reduction. Accordingly, the detection result of the detection circuit 32 is obtained only in a state where the second electrode 31 is appropriately pressed against the skin of the user's wear site by the expansion of the pressing cuff 26. Therefore, electrocardiographic waveform display data can be generated using only the detection result in a state where the electrocardiographic waveform is stable.
  • a current for measuring an electrocardiogram is supplied to a user only during a time when an appropriate electrocardiographic measurement result can be obtained. For this reason, it is possible to effectively acquire only an appropriate electrocardiographic waveform without unnecessarily lengthening the time during which the current flows through the user's body. Thereby, the burden on the user's body can be reduced.
  • the measuring device (1:10) includes a pressure acquisition unit (2:61) for acquiring pressure information representing the pressure in the press cuff, a pressurizing step of pressurizing the press cuff, A pressurized state holding step of maintaining the pressurized state of the press cuff after the end of the pressurizing step, and a depressurizing step of depressurizing the pressurized cuff after the end of the pressurized state holding step.
  • the present invention is not limited to the above-described embodiment, and can be variously modified in an implementation stage without departing from the scope of the invention.
  • the embodiments may be combined as appropriate, and in that case, the combined effect is obtained.
  • the above-described embodiment includes various inventions, and various inventions can be extracted by combinations selected from a plurality of disclosed constituent features. For example, even if some components are deleted from all the components shown in the embodiment, if the problem can be solved and an effect can be obtained, a configuration from which the components are deleted can be extracted as an invention.
  • a measuring device having a hardware processor (21) and a memory (22),
  • the hardware processor (21) includes: Obtaining pressure information representing the pressure in the pressing cuff, storing the obtained pressure information in the memory (22), A pressurizing step of pressurizing the pressing cuff, a pressurizing state holding step of maintaining a state where the pressing cuff is pressurized after the pressing step, and a pressing step after the pressing state holding step is completed.

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