PULSE TRANSIT TIME MEASUREMENT DEVICE AND BLOOD PRESSURE MEASUREMENT DEVICE

    公开(公告)号:US20210127993A1

    公开(公告)日:2021-05-06

    申请号:US17143334

    申请日:2021-01-07

    Abstract: A pulse transit time measurement device includes a belt unit wound around a target measurement site of a user, an electrode group provided in the belt unit and including a four electrodes, a current source applying an alternating current between the first electrode and the second electrode, a potential difference signal detection unit detecting a potential difference signal between the third electrode and the fourth electrode, an electrocardiogram acquisition unit acquiring, based on the potential difference signal, an electrocardiogram corresponding to a waveform signal representative of an electrical activity of a heart of the user, a pulse wave signal acquisition unit acquiring, based on the potential difference signal, as a pulse wave signal, a waveform signal representative of an electrical impedance in the target measurement site of the user, and a pulse transit time calculation unit calculating a pulse transit time based on the electrocardiogram and the pulse wave signal.

    BIOLOGICAL INFORMATION MEASUREMENT APPARATUS, METHOD, AND PROGRAM

    公开(公告)号:US20210022639A1

    公开(公告)日:2021-01-28

    申请号:US17041017

    申请日:2019-04-02

    Abstract: In an apparatus for measuring biological information using a radio wave, a technique for acquiring an index related to a setting position of the apparatus with respect to a measurement site is provided. A biological information measurement apparatus (1) according to an aspect of the present disclosure includes a transmitter (3) configured to transmit a radio wave toward a measurement. site of a living body; a receiver (4) configured to receive a reflected wave of the radio wave reflected by the measurement site and output a waveform signal of the reflected wave; a feature extraction unit (121) configured to extract information indicative of a feature of a waveform from the waveform signal; a determination unit (122) configured to determine whether a setting position of the biological information measurement apparatus with respect to the measurement site satisfies a condition corresponding to a preset reference position based on the extracted information indicative of the feature of the waveform; and an output unit (5) configured to output information indicative of a determination result determined by the determination unit.

    PULSE WAVE MEASUREMENT DEVICE, PULSE WAVE MEASUREMENT METHOD, AND BLOOD PRESSURE MEASUREMENT DEVICE

    公开(公告)号:US20190313924A1

    公开(公告)日:2019-10-17

    申请号:US16454254

    申请日:2019-06-27

    Abstract: A pulse wave measurement device including: a belt to be worn around a measurement target site; first and second pulse wave sensors that are mounted on the belt spaced from each other with respect to a width direction of the belt, and that detect pulse waves of opposing portions of an artery passing through the measurement target site; a pressing unit that is mounted on the belt is capable of changing pressing forces of the pulse wave sensors against the measurement target site; a waveform comparing unit that acquires pulse wave signals which are time-sequentially output by the pulse wave sensors respectively, and compares waveforms of the pulse wave signals; and a pulse wave sensor pressing force setting unit that variably sets the pressing forces by the pressing unit such that the waveforms of the pulse wave signals compared by the waveform comparing unit become identical to each other.

    PULSE WAVE MEASUREMENT DEVICE, PULSE WAVE MEASUREMENT METHOD, AND BLOOD PRESSURE MEASUREMENT DEVICE

    公开(公告)号:US20190290142A1

    公开(公告)日:2019-09-26

    申请号:US16441084

    申请日:2019-06-14

    Abstract: A first and second pulse wave sensor is mounted on the belt in a state of being separated from each other in the width direction. The belt is mounted around the measurement site, the member presses the first and second pulse wave sensors against the measurement site with a predetermined pressing force. Each of the pulse wave sensors detects a pulse wave in a facing portion of an artery passing through the measurement site. The body motion detection unit detects the presence or absence of body motion. When there is no body motion, the control unit sets a force of the pressing member to a pressing force to measure a pulse wave with the sensors. When there is body motion, the control unit sets a force of the pressing member to a second force lower than the first force and higher than zero and interrupts measurement of a pulse wave.

    TOOTHBRUSH
    25.
    发明申请
    TOOTHBRUSH 审中-公开

    公开(公告)号:US20190053614A1

    公开(公告)日:2019-02-21

    申请号:US16167588

    申请日:2018-10-23

    Abstract: A toothbrush includes a main body that includes a head portion with a bristle raising surface on which bristles are provided in a standing manner, a grip portion, and a neck portion. A light emission portion that emits light through a specific region of the bristle raising surface toward a tooth surface and a light reception portion that receives radiated light from the tooth surface resulting from the light, through the specific region, are provided inside of the main body. It is determined whether or not there is dental plaque on the tooth surface based on the output of the light reception portion. A light reception and condensing portion that condenses the radiated light from the tooth surface toward the light reception surface of the light reception portion is arranged in the housing portion forming the specific region.

    BIOLOGICAL STATE ESTIMATION DEVICE
    26.
    发明公开

    公开(公告)号:US20240188874A1

    公开(公告)日:2024-06-13

    申请号:US18582237

    申请日:2024-02-20

    CPC classification number: A61B5/349 A61B5/0245 A61B5/7221

    Abstract: A biological state estimation device that estimates a biological state based on at least an electrocardiographic feature amount and comprises an electrocardiographic waveform acquisition unit; an electrocardiographic feature amount extraction unit, a pulse waveform acquisition unit; a pulse wave feature amount extraction unit an electrocardiographic waveform quality determination unit; a first search reference point setting unit for setting a first reference point for searching the electrocardiographic waveform when the electrocardiographic waveform is of quality to enable extraction of the electrocardiographic feature amount; and a second search reference point setting unit that sets a second reference point for searching the electrocardiographic waveform on the basis of the pulse wave feature amount when the electrocardiographic waveform is of quality to enable extraction of the electrocardiographic feature amount. The electrocardiographic feature amount extraction unit searches the electrocardiographic waveform based on the first reference point or the second reference point an.

    ELECTROCARDIOGRAPHIC MEASUREMENT APPARATUS

    公开(公告)号:US20230012971A1

    公开(公告)日:2023-01-19

    申请号:US17934905

    申请日:2022-09-23

    Abstract: To provide an electrocardiographic measurement apparatus that can prevent a variety of subjects from having discomfort when the apparatus is attached to the subjects. The electrocardiographic measurement apparatus includes: a plurality of electrodes that has a length along a circumferential direction of an upper arm, the length being variable in accordance with a length in the circumferential direction of the upper arm, and detects an electric potential from the upper arm that is brought into contact with the electrodes; and a device body that generates electrocardiographic information based on the electric potential detected by the plurality of electrodes.

    BIOLOGICAL INFORMATION MEASUREMENT APPARATUS, METHOD, AND PROGRAM

    公开(公告)号:US20210007614A1

    公开(公告)日:2021-01-14

    申请号:US17041160

    申请日:2019-04-02

    Abstract: Provided is a technique for detecting a state of an occurrence of a body motion of a measurement target person affecting measurement by using an apparatus configured to measure biological information using a radio wave. A biological information measurement apparatus (1) according to an aspect of the present disclosure includes: a transmitter (3) configured to transmit a radio wave to a measurement site of a living body; a receiver (4) configured to receive a reflected wave of the radio wave by the measurement site and output a waveform signal of the reflected wave; a feature extractor (1051) configured to extract information indicating a feature of a waveform from the waveform signal; and a body motion detector (1052) configured to detect a state of an occurrence of a body motion of the living body affecting measurement of the biological information, based on the extracted information indicating the feature of the waveform.

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