WO2024047838A1 - 生体信号計測システム - Google Patents

生体信号計測システム Download PDF

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Publication number
WO2024047838A1
WO2024047838A1 PCT/JP2022/032935 JP2022032935W WO2024047838A1 WO 2024047838 A1 WO2024047838 A1 WO 2024047838A1 JP 2022032935 W JP2022032935 W JP 2022032935W WO 2024047838 A1 WO2024047838 A1 WO 2024047838A1
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WIPO (PCT)
Prior art keywords
electrode
circuit
measurement system
midpoint potential
receiver
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Ceased
Application number
PCT/JP2022/032935
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English (en)
French (fr)
Japanese (ja)
Inventor
賢一 松永
健斗 渡辺
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NTT Inc
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Nippon Telegraph and Telephone Corp
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Publication date
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Priority to PCT/JP2022/032935 priority Critical patent/WO2024047838A1/ja
Priority to US19/107,913 priority patent/US20260026730A1/en
Priority to JP2024543727A priority patent/JP7841600B2/ja
Publication of WO2024047838A1 publication Critical patent/WO2024047838A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • A61B5/30—Input circuits therefor
    • A61B5/307—Input circuits therefor specially adapted for particular uses
    • A61B5/308—Input circuits therefor specially adapted for particular uses for electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
    • A61B5/0006—ECG or EEG signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
    • A61B5/0024—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system for multiple sensor units attached to the patient, e.g. using a body or personal area network
    • 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
    • A61B5/251—Means for maintaining electrode contact with the body
    • A61B5/256—Wearable electrodes, e.g. having straps or bands
    • 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
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A61B5/305—Common mode rejection
    • 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]
    • A61B5/327—Generation of artificial ECG signals based on measured signals, e.g. to compensate for missing leads
    • 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]
    • A61B5/332—Portable devices specially adapted 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
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0204—Operational features of power management
    • A61B2560/0214—Operational features of power management of power generation or supply

Definitions

  • the present invention relates to a biological signal measurement system.
  • Electrocardiogram measurement which is one type of biopotential measurement
  • the potential difference between electrodes placed on both the left and right sides of the human body is measured.
  • a measurement system has been proposed in which a device 301 is attached to the center of the torso, wiring 303 is run through compression wear 302, and electrodes 304 are provided in contact with the left and right waist regions (Non-Patent Document 1).
  • Non-Patent Document 2 In addition, in biopotential measurement, the removal of common mode noise is an important element for stable operation, and as shown in FIG. (Right Leg Drive; RLD) circuit is often implemented (Non-Patent Document 2).
  • the present invention was made to solve the above-mentioned problems, and even if the wiring between the two electrodes and the right leg drive device is cut and divided into three devices, the biopotential can be easily adjusted.
  • the purpose is to make it possible to measure
  • the biosignal measurement system includes two electrode devices, a right foot drive device, and a biosignal generation device, and each of the two electrode devices includes a first electrode that measures bioelectric potential in a target human body,
  • a non-inverting amplifier circuit inputs the measured biopotential into a non-inverting amplification terminal, amplifies it and outputs it from the output terminal, and converts the amplified signal output from the output terminal of the non-inverting amplifier circuit into digital data to generate the biopotential.
  • a quantization circuit that generates information, a first wireless transmitter that transmits biopotential information to the biosignal generation device, and a FM signal that converts the voltage signal output from the output terminal of the non-inverting amplifier circuit to the other electrode.
  • the FM transmitter that sends to the device, the FM receiver that receives the FM signal sent from the other electrode device to the own electrode device, converts it to a voltage signal and outputs it, and the voltage signal output from the FM receiver.
  • an adjustment circuit that outputs an adjustment signal adjusted under the conditions set to the inverting input terminal of the non-inverting amplifier circuit, a non-inverting amplifier circuit, a quantization circuit, a first radio transmitter, an FM transmitter, an FM receiver, and an adjustment circuit.
  • the biosignal generating device is equipped with a power supply that supplies power to the circuit, and the FM signal transmitted from one of the two electrode devices to the other and the FM signal transmitted from the other to one have different frequencies, and the biosignal generating device includes: a first wireless receiver that receives biopotential information transmitted from each of the two electrode devices; an arithmetic circuit that generates a biosignal waveform using the biopotential information received by the first wireless receiver; A midpoint potential calculation circuit that calculates a midpoint potential from the biopotential information transmitted from each of the two electrode devices received by the receiver, and a second wireless transmitter that wirelessly transmits the midpoint potential to the right foot drive device.
  • the right leg drive device includes a second wireless receiver that receives the midpoint potential transmitted from the second wireless transmitter, an amplification circuit that amplifies the midpoint potential received by the second wireless receiver, and an amplification circuit. and a second electrode that applies the amplified midpoint potential to the human body.
  • two electrode devices and a biological signal generation device are connected by wireless communication
  • two electrode devices are connected by FM communication
  • a right leg driving device and a biological signal generation device are connected by wireless communication. Since the generation devices are connected by wireless communication, the biopotential can be easily measured even if the wiring between the two electrodes and the right leg drive device is cut and divided into three devices.
  • FIG. 1A is a configuration diagram showing the configuration of a biological signal measurement system according to Embodiment 1 of the present invention.
  • FIG. 1B is a configuration diagram showing a partial configuration of a biological signal measurement system according to Embodiment 1 of the present invention.
  • FIG. 2 is an explanatory diagram showing the concept of the biological signal measurement system according to Embodiment 1 of the present invention.
  • FIG. 3 is a configuration diagram showing the configuration of another biological signal measurement system according to Embodiment 1 of the present invention.
  • FIG. 4 is a configuration diagram showing the configuration of a biological signal measurement system according to Embodiment 2 of the present invention.
  • FIG. 5 is a configuration diagram showing the configuration of a conventional biological signal measurement system.
  • FIG. 6 is a configuration diagram showing the configuration of a conventional biological signal measurement system using a right leg driving device.
  • Embodiment 1 First, a biological signal measurement system according to Embodiment 1 of the present invention will be described with reference to FIGS. 1A and 1B.
  • This system includes two first electrode devices 100a, a second electrode device 100b, a right leg drive device 120, and a biological signal generation device 130.
  • the first electrode device 100a includes an electrode 101a that measures biopotential in a target human body, and a non-inverting amplifier circuit 102a that inputs the measured biopotential to a non-inverting amplification terminal, amplifies it, and outputs it from an output terminal. , a quantization circuit 103a that converts the amplified signal output from the output terminal of the non-inverting amplifier circuit 102a into digital data to generate biopotential information, and a first radio that transmits the biopotential information to the biosignal generation device 130.
  • a transmitter 104a is an electrode 101a that measures biopotential in a target human body, and a non-inverting amplifier circuit 102a that inputs the measured biopotential to a non-inverting amplification terminal, amplifies it, and outputs it from an output terminal.
  • a quantization circuit 103a that converts the amplified signal output from the output terminal of the non-inverting amplifier circuit 102a into digital data to generate biopotential information
  • the first electrode device 100a also includes an FM transmitter 105a, an FM receiver 106a, and an adjustment circuit 107a.
  • the FM transmitter 105a converts the voltage signal output from the output terminal of the non-inverting amplifier circuit 102a into an FM signal, and transmits the converted FM signal to the second electrode device 100b via the transmitting antenna 109a.
  • the FM receiver 106a converts the FM signal transmitted from the second electrode device 100b to the first electrode device 100a and received by the receiving antenna 110a into a voltage signal and outputs the voltage signal.
  • the first electrode device 100a outputs the voltage signal output from the FM receiver 106a as an adjustment signal adjusted under set conditions to the inverting input terminal of the non-inverting amplifier circuit 102a.
  • the output of the non-inverting amplifier circuit 102a is also input to the inverting input terminal.
  • the signal input from the adjustment circuit 107a to the inverting input terminal of the non-inverting amplifier circuit 102a is set to Vdev2, and the non-inverting amplifier circuit
  • the output of 102a is Vout1
  • the first electrode device 100a also includes a power source 108a that supplies power to a non-inverting amplifier circuit 102a, a quantization circuit 103a, a first wireless transmitter 104a, an FM transmitter 105a, an FM receiver 106a, and an adjustment circuit 107a. .
  • the second electrode device 100b includes an electrode 101b that measures biopotential in a target human body, and a non-inverting amplifier circuit 102b that inputs the measured biopotential to a non-inverting amplification terminal, amplifies it, and outputs it from an output terminal. , a quantization circuit 103b that converts the amplified signal output from the output terminal of the non-inverting amplifier circuit 102b into digital data to generate biopotential information, and a first radio that transmits the biopotential information to the biosignal generation device 130. and a transmitter 104b.
  • the second electrode device 100b also includes an FM transmitter 105b, an FM receiver 106b, and an adjustment circuit 107b.
  • the FM transmitter 105b converts the voltage signal output from the output terminal of the non-inverting amplifier circuit 102b into an FM signal, and transmits the converted FM signal to the first electrode device 100a via the transmission antenna 109b.
  • the FM receiver 106b converts the FM signal transmitted from the first electrode device 100a to the second electrode device 100b and received by the receiving antenna 110b into a voltage signal and outputs the voltage signal.
  • the adjustment circuit 107b outputs the voltage signal output from the FM receiver 106b as an adjustment signal adjusted under set conditions to the inverting input terminal of the non-inverting amplifier circuit 102b.
  • the second electrode device 100b also includes a power source 108b that supplies power to a non-inverting amplifier circuit 102b, a quantization circuit 103b, a first wireless transmitter 104b, an FM transmitter 105b, an FM receiver 106b, and an adjustment circuit 107b. .
  • the FM signal transmitted from the first electrode device 100a to the second electrode device 100b and the FM signal transmitted from the second electrode device 100b to the first electrode device 100a have different frequencies.
  • the biosignal generation device 130 includes a first wireless receiver 131 that receives biopotential information transmitted from each of the first electrode device 100a and the second electrode device 100b, and a biopotential information received by the first wireless receiver 131. and an arithmetic circuit 132 that generates a biological signal waveform using the .
  • the arithmetic circuit 132 generates an electrocardiographic signal waveform using, for example, two pieces of biopotential information transmitted from each of the first electrode device 100a and the second electrode device 100b attached to any two of the four limbs of the human body. can do.
  • the biosignal generation device 130 also includes a memory 133 that stores the biosignal waveform generated by the arithmetic circuit 132.
  • the biosignal generation device 130 calculates a midpoint potential from the biopotential information received by the first wireless receiver 131 and transmitted from each of the two first electrode devices 100a and the second electrode device 100b. It includes a calculation circuit 134 and a second wireless transmitter 135 that wirelessly transmits the midpoint potential to the right leg driving device 120.
  • the right foot drive device 120 includes a second wireless receiver 121 that receives the midpoint potential transmitted from the second wireless transmitter 135, and an amplifier circuit 122 that amplifies the midpoint potential received by the second wireless receiver 121. It includes a second electrode 123 that applies the midpoint potential amplified by the amplifier circuit 122 to the human body.
  • FIG. 2 shows the concept of the biological signal measurement system according to the first embodiment.
  • the midpoint potential is determined by the biosignal generation device 130 from the biopotential information measured by the first electrode device 100a and the second electrode device 100b attached to the human body 140.
  • the determined midpoint potential is fed back by wirelessly transmitting it to the right leg drive device 120 attached to the human body 140.
  • the non-inverting amplifier circuit 102a of the first electrode device 100a and the non-inverting amplifier circuit 102b of the second electrode device 100b are coupled to each other.
  • Such a configuration is similar to the configuration of an oscillation circuit, so regarding the phase rotation and amplification caused by delays in mutually coupled signals, oscillation will occur if the phase rotation is 180 degrees and the amplification is 1 or more. .
  • a 1 kHz signal will have a phase rotation of 36 degrees.
  • a delay of 0.5 ms causes a phase rotation of 180 degrees, so the possibility of oscillation cannot be denied. Therefore, in the mutual coupling between the non-inverting amplifier circuit 102a and the non-inverting amplifier circuit 102b described above, it is necessary to minimize the delay in the portion where the voltage signals are coupled.
  • Electrodes 101a and the electrode 101b will be explained.
  • Various types of electrodes can be used, including Ag/AgCl electrodes used in medical applications, conductive cloth electrodes, and metal electrodes.
  • usability can be further improved by using a non-contact electrode configuration in which the sensor device is worn over clothing using cloth or metal electrodes that do not need to be adhered to the human body.
  • the non-contact electrode configuration one based on capacitive coupling is preferable because it allows high frequency communication to easily pass through.
  • each of the adjustment circuit 107a and the adjustment circuit 107b be configured from a minimum of one stage of operational amplifier.
  • the non-inverting amplifier circuit 102a and the non-inverting amplifier circuit 102b will be explained. Since the biopotential is a very weak signal, it is necessary to amplify the signal using a non-inverting amplifying circuit 102a and a non-inverting amplifying circuit 102b, which are configured by an amplifying circuit using a filter circuit and an operational amplifier. In particular, by using a non-inverting amplifier circuit, it is possible to realize a system configuration equivalent to that of an instrumentation amplifier with high common mode suppression ability.
  • the amplification stages of the non-inverting amplifier circuit 102a and the non-inverting amplifier circuit 102b require high input impedance in order to reduce the loss of biopotential; Even with this configuration, noise is less likely to increase.
  • the resistance that determines the input impedance also affects the gain setting, and further contributes directly to thermal noise, resulting in a reduction in the S/N ratio. Therefore, a non-inverting amplifier circuit is effective.
  • the FM communication frequencies used when mutually coupling the non-inverting amplifier circuit 102a and the non-inverting amplifier circuit 102b need to have different frequencies. This is because if the same frequency is used, mutual interference will occur, making it impossible to obtain the desired coupling. This corresponds to dividing the band in communication, and by increasing the frequencies used, the present invention can be used not only in a configuration where electrode devices are paired, but also between a larger number of electrode devices. Become.
  • the first wireless transmitter 104a can be configured with one communication module, and has a connection that allows it to receive the measured potential output from the quantization circuit 103a and transmit it to the biological signal generation device 130. It's fine if you can take it.
  • the standard of the wireless communication network between the first wireless transmitter 104a, the first wireless transmitter 104b, and the first wireless receiver 131 is arbitrary, such as carrier communication, Wi-Fi (registered trademark), Bluetooth (registered trademark), etc. are applicable. It is necessary to select transmitters and receivers that match the communication standard.
  • the biological signal generation device 130 can be a smartphone or the like that is a terminal close to the user, who is the human body to be measured. Further, if Wi-Fi or the like is used, a server or the like can be used as the biological signal generation device 130.
  • the function required of the biosignal generation device 130 is to receive signals from a plurality of electrode devices and calculate a target biopotential. These functions can be implemented (built-in) in any electrode device without using the biological signal generation device 130.
  • the second electrode device 100b is added with a biological signal generation device including an arithmetic circuit, a memory, a midpoint potential calculation circuit, and a second wireless transmitter.
  • the second electrode device 100b is configured to include a first wireless receiver instead of the first wireless transmitter, receives the biopotential information transmitted from the first electrode device 100a, and receives the biopotential information transmitted from the first electrode device 100a.
  • the biopotential is calculated by combining it with the biopotential information.
  • the midpoint potential is determined by the midpoint potential calculation circuit, and the determined midpoint potential is wirelessly transmitted to the right leg driving device 120 by the second wireless transmitter.
  • the determined biopotential in the memory 133 of the second electrode device 100b, it becomes possible to achieve the same functions and effects as described above.
  • there is no need to separately provide the biosignal generation device 130 so there is no need to carry a smartphone or the like, and measurement can be performed without any restrictions on the user.
  • the second wireless transmitter can transmit the midpoint potential to the second wireless receiver by FM communication.
  • This configuration will be explained with reference to FIG. 3.
  • the midpoint potential calculated by the midpoint potential calculation circuit 134 of the biosignal generation device 130' is transmitted to the right leg drive device 120' by the FM transmitter 135a, and the right leg drive device 120' does not transmit the midpoint potential.
  • the FM receiver 121a receives the midpoint potential.
  • the other configurations are the same as described above.
  • At least one of the communication between the two electrode devices and the communication between the biological signal generation device and the right leg driving device can use the human body as a communication channel.
  • a transmitting electrode can be used instead of a transmitting antenna
  • a receiving electrode can be used instead of a receiving antenna.
  • the human body By performing FM communication through the human body, delays and power are reduced, and because the human body functions as a waveguide, it is possible to confine radio waves, making it resistant to external interference, and further reducing the risk of causing interference to the outside. This has the advantage that it can be reduced. Even when transmitting a human body, the FM signal transmitted from the first electrode device 100a to the second electrode device 100b and the FM signal transmitted from the second electrode device 100b to the first electrode device 100a have different frequencies. shall be taken as a thing. Loss can be reduced by setting the frequency band used to be from several MHz to about 100 MHz in view of the electrical properties of the human body.
  • a first electrode when using the human body as a communication channel, three electrodes are used in the electrode device: a first electrode, a transmitting electrode, and a receiving electrode.
  • a bandpass filter can be provided to configure it with one electrode. This has the effect of improving user comfort because the number of parts that come into contact with the human body is reduced.
  • FM communication is suitable for cases where the human body is used as a communication channel.
  • Embodiment 2 Next, a biological signal measurement system according to Embodiment 2 of the present invention will be described with reference to FIG. 4.
  • This system includes two first electrode devices 100a', a second electrode device 100b', a right leg drive device 120'', and a biosignal generating device 130.
  • the FM transmitter is composed of voltage controlled oscillators (VCO105a', VCO105b', VCO135b), and the FM receiver is composed of phase-locked circuits (PLL106a', PLL106b', PLL121b).
  • PLL106a', PLL106b', PLL121b phase-locked circuits
  • the other configuration is similar to the configuration described above when the human body is used as a channel, and in the second embodiment, a transmitting electrode 109a', a transmitting electrode 109b', a receiving electrode 110a', and a receiving electrode 110b' are used.
  • an FM transmitter is constructed from a voltage controlled oscillator and the output frequency is directly modulated by voltage.
  • the FM receiver is constructed from a phase-locked circuit and uses a direct detection method.
  • the FM transmitter By configuring the FM transmitter from a voltage-controlled oscillator and the FM receiver from a phase-locked circuit. Although the delay can be reduced, when direct detection and direct modulation are used, the voltage ⁇ Matching frequency conversion characteristics is essential for communication with few errors.
  • the voltage controlled oscillator generally uses LC resonance using a variable capacitance diode called a varactor or oscillation using a ring oscillator. Due to manufacturing variations in these elements, the voltage-to-frequency conversion characteristics may not match between the voltage-controlled oscillator that makes up the FM transmitter and the voltage-controlled oscillator included in the phase-locked circuit that makes up the FM receiver.
  • Adjustment can be made by adding an offset to the operational amplifier included in the adjustment circuit so as to match the voltage-frequency characteristics.
  • the offset can be determined by the input voltage to the operational amplifier.
  • Adjustment can be made without increasing delay by adjusting the amplification conditions of the operational amplifier included in the adjustment circuit so that the voltage-frequency characteristics of the phase-locked circuit of the self-electrode device match those of the voltage-controlled oscillator. .
  • the resistance value of the operational amplifier variable the amplification conditions of the operational amplifier can be adjusted.
  • two electrode devices and a biological signal generation device are connected by wireless communication
  • two electrode devices are connected by FM communication
  • a right leg drive device and a biological signal generator are connected by wireless communication. Since the signal generating devices are connected by wireless communication, the biopotential can be easily measured even if the wiring between the two electrodes and the right leg drive device is cut and divided into three devices.

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  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
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  • Medical Informatics (AREA)
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  • Computer Networks & Wireless Communication (AREA)
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  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
PCT/JP2022/032935 2022-09-01 2022-09-01 生体信号計測システム Ceased WO2024047838A1 (ja)

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PCT/JP2022/032935 WO2024047838A1 (ja) 2022-09-01 2022-09-01 生体信号計測システム
US19/107,913 US20260026730A1 (en) 2022-09-01 2022-09-01 Biosignal measurement system
JP2024543727A JP7841600B2 (ja) 2022-09-01 2022-09-01 生体信号計測システム

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003339656A (ja) * 2002-05-28 2003-12-02 Matsushita Electric Works Ltd 生体電気信号計測の基準電位安定化装置および筋電計
US20170055862A1 (en) * 2015-08-24 2017-03-02 Korea Institute Of Science And Technology Apparatus and method for measuring electrocardiogram using wireless communication
JP2021074080A (ja) * 2019-11-06 2021-05-20 ソニーセミコンダクタソリューションズ株式会社 信号処理回路
US20210244337A1 (en) * 2019-05-08 2021-08-12 Boe Technology Group Co., Ltd. Electrocardiograph acquisition circuit, device, method and system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003339656A (ja) * 2002-05-28 2003-12-02 Matsushita Electric Works Ltd 生体電気信号計測の基準電位安定化装置および筋電計
US20170055862A1 (en) * 2015-08-24 2017-03-02 Korea Institute Of Science And Technology Apparatus and method for measuring electrocardiogram using wireless communication
US20210244337A1 (en) * 2019-05-08 2021-08-12 Boe Technology Group Co., Ltd. Electrocardiograph acquisition circuit, device, method and system
JP2021074080A (ja) * 2019-11-06 2021-05-20 ソニーセミコンダクタソリューションズ株式会社 信号処理回路

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