WO2015152043A1 - Dispositif de détection d'onde d'impulsion - Google Patents

Dispositif de détection d'onde d'impulsion Download PDF

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Publication number
WO2015152043A1
WO2015152043A1 PCT/JP2015/059600 JP2015059600W WO2015152043A1 WO 2015152043 A1 WO2015152043 A1 WO 2015152043A1 JP 2015059600 W JP2015059600 W JP 2015059600W WO 2015152043 A1 WO2015152043 A1 WO 2015152043A1
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WO
WIPO (PCT)
Prior art keywords
pulse wave
unit
detection unit
detection
holding member
Prior art date
Application number
PCT/JP2015/059600
Other languages
English (en)
Japanese (ja)
Inventor
飯島　竜太
義学 倉橋
町田　淳
Original Assignee
ブラザー工業株式会社
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 ブラザー工業株式会社 filed Critical ブラザー工業株式会社
Publication of WO2015152043A1 publication Critical patent/WO2015152043A1/fr

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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
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/026—Measuring blood flow
    • A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
    • 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
    • A61B5/6843—Monitoring or controlling sensor contact pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0247—Pressure sensors
    • 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 pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/02108—Measuring pressure in heart or blood vessels from analysis of pulse wave characteristics
    • 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 pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • A61B5/02427—Details of sensor
    • 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
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6825—Hand
    • A61B5/6826—Finger

Definitions

  • the present invention relates to a pulse wave detection device that detects a pulse wave of a subject by irradiating the subject pressed by a detection unit with light and receiving light reflected by the subject.
  • the detection unit includes a light emitting unit that irradiates light to the measurement target, a light receiving unit that receives light reflected from the measurement target, and the detection unit has one end in a predetermined direction.
  • a detection unit holding member provided on the side, and a support unit that fixedly supports the other end side of the detection unit holding member in the predetermined direction and arranges the detection unit holding member with a predetermined arrangement surface and an interval.
  • the pulse wave detection device wherein, on the other end side of the detection unit holding member, the support unit that supports the facing surface, and the placement surface that is disposed in a direction along the facing surface.
  • the detecting unit holding member includes the detecting unit on the one end side, and the load detecting unit is arranged on the one end side so as to contact the facing surface of the detecting unit holding member. It is arrange
  • the detection unit holding member includes the detection unit on the one end side of a predetermined surface, and the support unit on the facing surface facing the surface on which the detection unit is provided.
  • the load detection unit is provided on the other end side, and the load detection unit is provided on the one end side of the facing surface and on the end side from the position where the detection unit is disposed.
  • the pulse wave detection device includes a placement plate having the support portion that supports the facing surface of the detection portion holding member, and the placement surface that is disposed in a direction along the facing surface, The load detection unit is disposed on the facing surface of the detection unit holding member in contact with the arrangement surface of the arrangement plate.
  • each of the detection unit and the load detection unit is electrically connected to a control unit for obtaining a detection result by the detection unit and the load detection unit by a lead wire.
  • the conducting wire is wired from the other end side to the detection unit and the load detection unit from a position where the support unit of the detection unit holding member is disposed.
  • the pulse wave detection device wherein the pulse wave detection unit that detects a pulse wave by the light emitting unit and the light receiving unit of the detection unit, and whether the detected pulse wave satisfies a predetermined detection criterion An instruction to increase or weaken the load applied to the detection unit when the pulse wave determination unit does not determine that the detected pulse wave satisfies the detection criterion.
  • the notification unit and the pulse wave detection unit until the pulse wave determination unit determines that the detected pulse wave satisfies the detection criterion when it is not determined that the detection pulse wave satisfies the detection criterion.
  • the pulse wave is repeatedly detected, and when the pulse wave determination unit determines that the detected pulse wave satisfies the detection criterion, the notification unit instructs the amount of load applied to the detection unit.
  • the detection unit holding member is disposed in contact with the support unit and the load detection unit.
  • the load detection unit is arranged on the end side from the position where the detection unit is arranged. Therefore, the distance from the support part which is a fulcrum is longer from the measurement object to the detection part to which the load is applied, to the load detection part for detecting the pressure applied to the detection part holding member.
  • the detection unit holding member is contacted by the support unit and the load detection unit, and when a load is applied to the detection unit by the measurement target, the detection unit holding member is stably supported, A load can be stably applied to the detection unit.
  • the detection unit holding member includes a detection unit, a support unit, and a load detection unit.
  • the support part provided in the detection part holding member can be arrange
  • the pulse wave detection device includes an arrangement plate having an arrangement surface along an opposing surface of the detection unit holding member, and the support unit is arranged on the arrangement plate.
  • the pulse wave detection device includes a pulse wave detection unit, a pulse wave determination unit, a notification unit, and a storage control unit.
  • the pulse wave is instructed to increase or decrease the pressure and is repeatedly detected until it is determined that the detection criterion is satisfied.
  • the load amount when the pulse wave determination unit determines a pulse wave that satisfies a predetermined detection criterion is stored as a reference load amount. Until a pulse wave satisfying a predetermined standard is detected, the intensity of the load is instructed, repeatedly detected, and the load amount at which the pulse wave is judged is stored as a reference, so that the pulse wave is reliably detected. Based on a possible pressure standard, it is possible to detect a pulse wave in a state where the strength of the load is adjusted.
  • FIG. 2 is a block diagram showing an electrical configuration of the pulse wave detection device 1.
  • FIG. It is the side view which looked at the pulse wave detection apparatus 1 from the front. It is the figure which looked at the pulse-wave detection apparatus 1 from the right side surface.
  • 4 is a flowchart showing a pulse wave detection process of the pulse wave detection device 1.
  • It is a perspective view which shows the whole structure of the pulse wave detection apparatus 200 of 2nd Embodiment.
  • FIG. 1 is a perspective view showing the overall configuration of the pulse detection device 1 of the first embodiment.
  • the pulse wave detection device 1 includes a light emitting unit 11 composed of two light emitting elements, a light receiving unit 12 composed of a light receiving element, a holding plate 13, a placement plate 14, a pressure sensor 15, a notification unit 16, and a circuit board 20. And a conductive wire cable 5.
  • the light emitting unit 11 and the light receiving unit are placed on the circuit board 20.
  • the light emitting element 11 is a pair of LEDs that emit light.
  • the light receiving element 12 is a photodiode that receives light.
  • reporting part 16 is red LED, yellow LED, and yellow-green LED.
  • the light emitting unit 11, the light receiving unit 12, and the notification unit 16 are disposed on the surface of the holding plate 13.
  • the holding plate 13 is a rectangular flat plate.
  • the arrangement plate 14 has a rectangular flat plate.
  • the light emitting unit 11, the light receiving unit 12, the pressure sensor 15, and the notification unit 16 of the pulse wave detection device 1 are electrically connected by a control device 2 and a conductive wire cable 5 described later.
  • a control device 2 As shown in FIG.
  • the holding portion 13 is supported by three points having the same height by the upper end of the pressure sensor 15 and the upper ends of the two support portions 14A. Since the light emitting unit 11 and the light receiving unit 12 are arranged in the center of the holding unit 3 by the two support units 14A and the pressure sensor 15, the light emitting unit 11 and the light receiving unit 12 are stable when pressed by a measuring finger. Regarding the positional relationship in which the light emitting unit 11 and the light receiving unit 12 and the pressure sensor 15 are arranged in the left-right direction, the distance from the support unit 14A to the center of the pressure sensor 15 is the distance from the support unit 14A to the light emitting unit 11 and the light receiving unit. The distance to the center of 12 may be more than the distance.
  • the pressure sensor used in this embodiment is formed by dispersing conductive particles almost uniformly in an insulating resin material.
  • the pressure sensor has a structure in which, when pressed, the conductive particles dispersed in the resin material conduct and the electric resistance value decreases.
  • the pressure sensor 15 exhibits an electrical characteristic in which the electrical resistance value decreases almost in inverse proportion to the load applied to the pressure sensor 15. For this reason, the smaller the load applied to the pressure sensor, the larger the change in the electric resistance value in the predetermined pressure range, and the larger the load, the smaller the change in the electric resistance value in the predetermined pressure range. That is, the pressure sensor 15 has a characteristic that it is easy to detect a change in the electric resistance value on the low load side.
  • FIG. 2 is a block diagram illustrating an electrical configuration of the light emitting unit 11, the light receiving unit 12, the pressure sensor 15, and the circuit board 20 provided in the pulse wave detection device 1.
  • the pulse wave detection device 1 is provided with the light emitting unit 11, the light receiving unit 12, and the pressure sensor 15 as described above.
  • the light emitting unit 12 and the pressure sensor 15 of the pulse wave detection device 1 are electrically connected to the circuit board 20.
  • the circuit board 20 includes a pulse wave detection circuit unit 21, an A / D conversion circuit unit 24, a control circuit unit 25, and an input / output interface 30.
  • the light receiving unit 11 of the pulse wave detection device 1 is electrically connected to the pulse wave detection circuit unit 21 of the control device 2.
  • the pulse wave detection circuit unit 21 includes a current-voltage conversion circuit 22 and an amplifier circuit 23.
  • the holding plate 13 is displaced downward with the instruction portion 14A as a fulcrum.
  • the left end of the holding plate 13 is greatly displaced downward, but the right end is not so displaced because it is supported. Since the lead wire cable 5 is wired from the right end side of the holding plate 13, even if the number of times the pulse wave detection device 1 is used and the number of displacements of the holding plate 13 is increased, the possibility of disconnection is suppressed. be able to.
  • the ROM 28 stores various programs, and stores various programs such as a pulse wave detection process for detecting a pulse wave described later.
  • the ROM 28 stores in advance a pressure threshold value (pulse wave measurement threshold value) T1 and the like suitable for detecting the pulse wave of the fingertip of the measurement finger that presses the light emitting unit 11 and the light receiving unit 12.
  • a pressure threshold value pulse wave measurement threshold value
  • the ROM 28 may store a pressure threshold capable of detecting a pulse wave in association with user information for each individual.
  • the CPU 26 performs various calculations and controls based on various programs stored in the ROM 28.
  • FIG. 3 is a side view of the pulse wave detection device 1 viewed from the front of FIG.
  • FIG. 4 is a side view of the pulse wave detection device 1 as viewed from the right side of FIG.
  • the pressure sensor 15 provided on the arrangement plate 14 is arranged on the end side in the left direction from the position where the light emitting unit 11 and the light receiving unit 12 are arranged on the upper surface of the holding plate 13. .
  • a measurement finger that is a subject is placed on the light emitting unit 11 and the light receiving unit 12. Of the light emitted by the light emitting unit 11, the light that reaches the blood vessel of the measurement finger and is reflected is received by the light receiving unit 12.
  • the pressure sensor 15 is in contact with a position that is largely displaced with a load less than the load applied to the light receiving portion of the holding plate 13 and receives a pressing force to the holding plate 13, thereby detecting the change in the pressing force finely. it can.
  • the pulse wave detection device 1 is a device that receives light reflected by a blood vessel of a measurement finger that is a measurement target by the light receiving unit 11 and detects a pulse wave of the measurement finger.
  • the light receiving unit 11 needs to receive the reflected light continuously for a predetermined time.
  • the force pressed against the light receiving unit 11 and the light emitting unit 12 requires accuracy. It is desirable that the pressing force does not change during light reception for a predetermined time. Further, the pressing force necessary to receive the light for measuring the pulse wave of the measuring finger has individual differences depending on the measuring finger.
  • the pressure sensor 15 since the pressure sensor 15 has a configuration capable of finely detecting changes in the pressing force, it is possible to accurately detect the pressing force necessary for detecting the pulse wave of the measuring finger.
  • FIG. 5 is a flowchart showing the processing procedure of the pulse wave detection process of the pulse wave detection device 1 executed by the CPU 26.
  • the CPU 26 executes the pulse wave detection process in steps S1 to S8 shown in FIG. 5 according to the program stored in the ROM 28.
  • the pulse wave detection process is started when the power of the pulse wave detection device 1 is turned on.
  • a signal for causing the red LED to emit light is output.
  • reporting part 16 showed the example comprised by LED, a display may be sufficient.
  • the notification unit 16 is a display, the display displays a determination result indicating that the pressure is not within a predetermined range according to the signal. For example, characters such as “the pressure pressed by the finger is not in the proper range” are displayed on the display as the determination result.
  • the CPU 26 When the pressure is within the appropriate range (S1: YES), the CPU 26 notifies the determination result indicating that the pressure is within the predetermined range by notifying the notification unit 16 (S3).
  • the CPU 26 outputs a signal that causes the notification unit 16 to notify the determination result indicating that the pressure is within the predetermined range.
  • the notification unit 16 having received this signal displays a determination result indicating that the pressure is not within the predetermined range.
  • the CPU 26 outputs a signal for causing the yellow LED to emit light, and the notification unit 16 causes the yellow LED to emit light.
  • the notification unit 16 is configured by a display, characters such as “the pressure pressed with a finger is in an appropriate range” are displayed on the display as a determination result.
  • the CPU 26 refers to the light intensity data and the pressure data measured in S4 for a predetermined time, and based on the light received by the light receiving unit 12 during the period when the pressure is determined to be within the predetermined range, the pulse wave Is detected (S5).
  • the CPU 26 determines whether or not the pressure data for a predetermined time measured in S4 is a pressure within a predetermined range.
  • the CPU 26 specifies the light intensity during the period when the pressure is determined to be within the predetermined range.
  • the CPU 26 detects a pulse wave based on the specified light intensity.
  • step S14 biological information such as a pulse wave detected in the process of step S6 or step S10 is output to the PC 35 connected to the pulse wave detection device 1.
  • the destination to which the pulse wave is output may be a general-purpose display device (not shown).
  • the configuration of the pulse wave detection device 200 according to the second embodiment will be described with reference to FIG.
  • the pressure sensor 15 is placed on the upper surface of the arrangement plate 14 and the upper end is in contact with the holding plate 13.
  • the arrangement of the pressure sensor 215 is different from that of the first embodiment.
  • the pulse wave detection device 200 according to the second embodiment is different from the pulse wave detection device 1 according to the first embodiment only in the arrangement of the pressure sensor 215, and thus the description of other identical configurations is omitted.
  • the pressure sensor 215 is disposed on the lower surface of the holding plate 13 with the vertical direction reversed from that of the first embodiment.
  • the bottom surface of the pressure sensor 215 is the lower surface of the holding plate 13 and is disposed on the left end side from the position where the light receiving unit 11 and the light emitting unit 12 are disposed.
  • the pressure sensor 215 is arrange
  • the pulse wave detection device 300 of the third embodiment has a configuration in which the arrangement of the pressure sensor 315 is different from that of the first embodiment.
  • the support portion 14 ⁇ / b> A is provided on the arrangement plate 14 and arranged so as to contact the holding plate 13.
  • the pulse wave detection device 300 according to the third embodiment is different from the pulse wave detection device 1 according to the first embodiment only in the arrangement of the pressure sensor 315 and the arrangement of the support portion 314A. Will not be described.
  • the pressure sensor 315 is disposed on the lower surface of the holding plate 13 with the vertical direction reversed from that of the first embodiment.
  • the bottom surface of the pressure sensor 315 is the lower surface of the holding plate 13 and is arranged on the left end side from the position where the light receiving unit 11 and the light emitting unit 12 are arranged.
  • the pressure sensor 315 is arrange
  • FIG. As shown in FIG. 7, in the pulse wave detection device 300, the support portion 314 ⁇ / b> A is provided on the lower surface of the holding plate 313 with the vertical direction reversed from that of the first embodiment.
  • the two support portions 314A are disposed on the lower surface of the holding plate 313 in the front-rear direction of the right end portion.
  • the support portion 314 ⁇ / b> A is disposed such that the lower end is in contact with the arrangement plate 14.
  • the pulse wave detection device 300 may be configured not to include the arrangement plate 14 because the support portion 314 ⁇ / b> A and the pressure sensor 315 are arranged on the holding plate 313.
  • the lower end of the support portion 314 ⁇ / b> A and the lower end that is the apex for detecting the pressure of the pressure sensor 315 may be arranged on a plane.
  • the configuration is not limited to that of the first embodiment, the second embodiment, and the third embodiment described above.
  • the pulse wave detection device 1 is not limited to the above-described configuration as long as the pressure sensor 15 can be arranged between the holding plate 13 and the arrangement plate 14.
  • the configuration may be such that the support portion 14 ⁇ / b> A is disposed on the holding plate 13 and the pressure sensor 15 is disposed on the placement plate 14. At this time, the lower end of the support portion 14 ⁇ / b> A is disposed so as to contact the upper surface of the arrangement plate 14, and the upper end of the pressure sensor 15 is disposed so as to contact the lower surface of the holding plate 13.
  • the holding plate 13 and the arrangement plate 14 may not be arranged in parallel. What is necessary is just to have the space

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Hematology (AREA)
  • Cardiology (AREA)
  • Physiology (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

L'invention vise à fournir un dispositif de détection d'onde d'impulsion, qui peut détecter d'infimes modifications de la force de pression sur une unité de détection par un objet. Une plaque de retenue (13) d'un dispositif de détection d'onde d'impulsion (1) est disposée de façon à s'appuyer contre une section de support (14A) et un capteur de pression (15). À ce moment, le capteur de pression (15) est disposé vers un côté d'extrémité de la plaque de retenue (13) davantage vers la gauche que la position sur la plaque de retenue (13), dans laquelle sont disposées une unité de réception de lumière (11) et une unité d'émission de lumière (12), ladite plaque de retenue (13) ayant l'unité de réception de lumière (11) et l'unité d'émission de lumière (12) disposées sur son premier côté d'extrémité, qui est le côté gauche, et la section de support (14A) étant disposée sur l'autre côté d'extrémité, qui est le côté droit. La distance de la section de support (14A), qui est un point d'appui, au capteur de pression (15), qui détecte une pression appliquée à la plaque de retenue (13), est amenée à être plus longue que la distance de la section de support (14A) à la position dans laquelle sont disposées l'unité de réception de lumière (11) et l'unité d'émission de lumière (12), sur laquelle est appliquée une charge provenant d'un objet à mesurer.
PCT/JP2015/059600 2014-03-31 2015-03-27 Dispositif de détection d'onde d'impulsion WO2015152043A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-071273 2014-03-31
JP2014071273A JP2015192702A (ja) 2014-03-31 2014-03-31 脈波検出装置

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WO2015152043A1 true WO2015152043A1 (fr) 2015-10-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113367667A (zh) * 2021-04-29 2021-09-10 吴天赐 一种妇产科电子脉搏仪

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102655738B1 (ko) 2016-12-27 2024-04-05 삼성전자주식회사 접촉형 혈압 측정 장치
KR102580267B1 (ko) 2018-01-18 2023-09-19 삼성전자주식회사 생체 신호 측정 장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10108846A (ja) * 1996-10-03 1998-04-28 Nippon Koden Corp 生体信号検出用挟持具
JP2009066042A (ja) * 2007-09-11 2009-04-02 Mitsuba Corp 脈波計測装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10108846A (ja) * 1996-10-03 1998-04-28 Nippon Koden Corp 生体信号検出用挟持具
JP2009066042A (ja) * 2007-09-11 2009-04-02 Mitsuba Corp 脈波計測装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113367667A (zh) * 2021-04-29 2021-09-10 吴天赐 一种妇产科电子脉搏仪
CN113367667B (zh) * 2021-04-29 2022-08-09 深圳市康美生科技有限公司 一种妇产科电子脉搏仪

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