WO2021060452A1 - Sonde d'estimation de bio-informations et dispositif d'estimation de bio-informations - Google Patents

Sonde d'estimation de bio-informations et dispositif d'estimation de bio-informations Download PDF

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Publication number
WO2021060452A1
WO2021060452A1 PCT/JP2020/036218 JP2020036218W WO2021060452A1 WO 2021060452 A1 WO2021060452 A1 WO 2021060452A1 JP 2020036218 W JP2020036218 W JP 2020036218W WO 2021060452 A1 WO2021060452 A1 WO 2021060452A1
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WIPO (PCT)
Prior art keywords
probe
biological information
bottom wall
sensor
sensors
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PCT/JP2020/036218
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English (en)
Japanese (ja)
Inventor
良輔 正森
悠気 上杉
洋介 村木
Original Assignee
トリプル・ダブリュー・ジャパン株式会社
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Priority to JP2021549031A priority Critical patent/JP7162382B2/ja
Publication of WO2021060452A1 publication Critical patent/WO2021060452A1/fr

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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
    • A61B5/20—Measuring for diagnostic purposes; Identification of persons for measuring urological functions restricted to the evaluation of the urinary system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings

Definitions

  • the technology disclosed here relates to a probe for estimating biological information and a biological information estimating device.
  • Patent Document 1 describes a bladder based on a sensor that transmits ultrasonic waves into the body and detects the reflected waves of the ultrasonic waves, and the presence / absence and / or size of the reflected waves from the bladder detected by the sensors.
  • a urine volume estimation device including an estimation unit for estimating the urine volume of the above is disclosed.
  • Patent Document 2 discloses a non-invasive urine volume estimation sensor unit composed of a plurality of sensors using an ultrasonic transducer and having a sensor group set to an arrangement and an ultrasonic emission angle so that each sensor can detect the bladder shape. Has been done.
  • Patent Document 3 states that one or more transducers for transmitting at least one ultrasonic beam into the body so as to include a parenchymal portion of the bladder and an ultrasonic echo signal from the bladder are received and described above.
  • a device for measuring the volume of urine in the bladder is disclosed, which comprises means for determining the magnitude of the harmonic component of the first frequency in the received signal.
  • Ultrasonic sensors are also used in technology for estimating biological information other than urine volume.
  • Patent Document 4 discloses a biological information estimation device that estimates biological information based on ultrasonic measurement information collected through an ultrasonic sensor.
  • the main purpose of the technology disclosed here is to provide a probe for estimating biological information that can accurately receive reflected waves of ultrasonic waves.
  • the probe for estimating biological information disclosed herein includes a first bottom wall, a second bottom wall arranged at a position recessed from the first bottom wall, the first bottom wall, and the first bottom wall.
  • a housing having a side wall connecting the two bottom walls and having a recess formed by the second bottom wall and the side wall, and a housing arranged inside the recess to transmit ultrasonic waves and / or reflect ultrasonic waves. It includes at least one sensor that receives waves and a backing material that covers at least one of the sensors.
  • the biological information estimation device disclosed here includes the biological information estimation probe and a main body device unit connected to the probe by wire or wirelessly.
  • FIG. 2 is a cross-sectional view taken along the line AA of the housing 11 shown in FIG. It is a perspective view which shows the inside of the housing 11 which concerns on 1st Embodiment.
  • FIG. 2 is a cross-sectional view taken along the line BB of the housing 11 shown in FIG. It is sectional drawing which shows an example of the backing material 913 which is known conventionally.
  • FIG. 7 is a cross-sectional view of the housing 21 shown in FIG. 7 in the direction of arrow AA.
  • FIG. 7 is a cross-sectional view of the housing 21 shown in FIG. 7 in the direction of arrow BB. It is sectional drawing which shows the state which formed the backing material 213 in the housing 21 shown in FIG. It is a block diagram which shows the structure of the biological information estimation apparatus 10 which includes the probe 1 for biological information estimation and the main body apparatus part 5. It is waveform data which shows the result of an Example. It is waveform data which shows the result of the comparative example.
  • the probe for estimating biological information according to the first embodiment will be described.
  • the probe is used to estimate biological information.
  • the biological information is not particularly limited as long as it is information obtained from the living body, for example, urine volume, peristaltic movement of the digestive tract, stool volume, heartbeat, respiration, lung function (water accumulation condition), liver function, bone abnormality, etc. Can be mentioned. Therefore, the above-mentioned probe is a probe for urine volume estimation, a probe for peristaltic motion estimation, a probe for stool volume estimation, a probe for heartbeat detection, a probe for breathing detection, and a probe for lung function detection. It can be a probe, a probe for detecting liver function, or a probe for detecting bone abnormality.
  • the probe for estimating biological information of the present embodiment is preferably a probe for estimating urine volume or a probe for estimating peristalsis because it is suitable for use in estimating urine volume or peristalsis. I'm a child.
  • the probe of the present embodiment will be described by taking a probe for estimating urine volume as an example.
  • the probe for estimating biological information is not limited to the probe for estimating urine volume.
  • the urine volume estimation probe is equipped with at least one sensor that transmits ultrasonic waves and receives reflected waves of the ultrasonic waves, and the urine volume in the bladder of the subject based on the received reflected wave information. Is used to estimate.
  • the subjects are not particularly limited, but are, for example, patients with dysuria or urinary incontinence, or elderly people who have difficulty in going to the toilet on their own.
  • the urine volume estimation probe is fixed to the part of the skin of the subject's abdomen corresponding to the bladder (for example, the lower abdomen) by a fixing means such as a tape and a belt.
  • a gel or the like for improving the permeability of ultrasonic waves to the abdomen may be applied between the urine volume estimation probe and the abdomen.
  • FIG. 1 is a perspective view showing a probe 1 for estimating urine volume.
  • the urine volume estimation probe 1 (hereinafter, also simply referred to as “probe 1”) includes a housing 11 and a lid 12.
  • the housing 11 is a box-shaped container having an opening. At least one sensor that transmits ultrasonic waves and receives reflected waves of the ultrasonic waves is arranged inside the housing 11. The configuration of the housing 11 will be described in detail later.
  • the lid body 12 is combined with the housing 11 so as to cover the opening of the housing 11.
  • the lid body 12 may include an insertion port 121 for inserting a cable used for connecting the probe 1 and the main body device unit described later.
  • the lid body 12 may be provided with an arrow 122 on the surface thereof, which indicates the direction of the probe 1 when the probe 1 is attached to the abdomen of the subject.
  • FIG. 2 is a plan view showing the inside of the housing 11 according to the first embodiment.
  • FIG. 3 is a cross-sectional view of the housing 11 shown in FIG. 2 in the direction of arrow AA.
  • the housing 11 is provided with a recess 111 having a bottom surface portion (hereinafter referred to as a second bottom wall) 111a and a side surface portion (hereinafter referred to as a side wall) 111b, and a housing 11 projecting outward from the side wall 111b. It is provided with a stepped portion (hereinafter, first bottom wall) 112. That is, the housing 11 connects the first bottom wall 112, the second bottom wall 111a arranged at a position recessed from the first bottom wall 112, and the first bottom wall 112 and the second bottom wall 111a. It has a side wall 111b, and a recess 111 is formed by the second bottom wall 111a and the side wall 111b.
  • the sensor 13 described above is arranged inside the recess 111 of the housing 11.
  • the first bottom walls 112 and 112 shown in FIG. 3 are provided so as to project in the left-right direction of the housing 11, respectively.
  • the left-right direction of the housing 11 means the left-right direction when the urine volume estimation probe is attached to the body surface of the subject.
  • the outer surfaces of the recess 111 and the first bottom wall 112 serve as the contact surface with the body surface of the subject.
  • the contact surface so as to have the first bottom wall 112 as shown in FIG. 3 without flattening the contact surface, it is possible to increase the force on the body surface of the probe per unit area. As a result, the adhesion of the housing 11 to the body surface can be improved.
  • FIG. 4 is a perspective view showing the inside of the housing 11 according to the first embodiment.
  • the sensor 13 is provided inside the housing 11.
  • the sensor 13 has a piezoelectric element, and transmits ultrasonic waves and receives reflected waves of the ultrasonic waves.
  • the piezoelectric element vibrates according to the driving voltage to generate ultrasonic waves, and when it receives ultrasonic waves, it generates an electric signal corresponding to the vibration.
  • the shape of the sensor 13 is not particularly limited, and may be any shape such as a disk shape or a rectangular plate shape.
  • the number of sensors 13 is not particularly limited, and may be at least one or may be plural.
  • a housing 11 in which four sensors 13 are arranged is shown.
  • FIGS. 2 and 4 show the housing 11 in which the first sensor 13A, the second sensor 13B, the third sensor 13C, and the fourth sensor 13D are arranged.
  • the number of sensors 13 is plurality, it is possible to acquire the biological information of the subject in a wider range.
  • the first sensor 13A, the second sensor 13B, the third sensor 13C, and the fourth sensor 14D are not distinguished from each other, they are simply referred to as "sensor 13".
  • Each sensor 13 is arranged on the second bottom wall 111a so that one surface is in direct contact with the inner surface of the second bottom wall 111a or indirectly via an adhesive or the like.
  • the plurality of sensors 13 are arranged side by side in a predetermined parallel arrangement direction.
  • the plurality of sensors 13 are arranged at different positions in the vertical direction of the housing 11.
  • the vertical direction of the housing 11 means the vertical direction when the urine volume estimation probe is attached to the body surface of the subject. That is, it is preferable that the plurality of sensors 13 are arranged side by side in the vertical direction when the urine volume estimation probe is attached to the body surface of the subject.
  • the first sensor 13A, the second sensor 13B, the third sensor 13C, and the fourth sensor 13D are arranged in this order from the bottom.
  • the bladder swells three-dimensionally as the amount of urine stored increases, and in particular, it swells significantly in the vertical direction.
  • the configuration in which a plurality of sensors are arranged side by side in the vertical direction as described above is suitable for more accurately detecting the bladder inflating in the vertical direction. With the above configuration, it is possible to improve the estimation accuracy of the urine volume in the bladder.
  • the ultrasonic transmission angles of the plurality of sensors 13 may be all the same, some may be the same, or all may be different from each other. From the viewpoint of acquiring the biological information of the subject in a wider range, it is preferable that the plurality of sensors 13 have different ultrasonic transmission angles. When it is desired to detect biological information widely in the vertical direction, such as when detecting a bladder, it is preferable that the plurality of sensors 13 have different ultrasonic transmission angles in the vertical direction.
  • FIG. 5 is a cross-sectional view of the housing 11 shown in FIG. 2 in the direction of arrow BB.
  • the urine volume estimation probe of the present embodiment includes a backing material 113 that covers the sensors 13A to 13D inside the housing 11. In FIGS. 2 to 4 described above, the backing material is not shown.
  • the "backing material that covers the surface of the sensor” means a backing material that is provided so as to completely cover the surface of the sensor.
  • the backing material 113 fills the recess 111 so as to completely cover the sensor 13.
  • the backing material 113 is partially filled from the second bottom wall 11a of the recess 111.
  • the sensor 13 is responsible for transmitting ultrasonic waves and receiving reflected waves of ultrasonic waves.
  • the sensor 13 vibrates during ultrasonic wave transmission, but if the extra vibration is large, the ultrasonic wave reception accuracy may decrease.
  • the backing material 113 shown in FIG. 5 is provided to suppress excessive vibration of the sensor 13. As a result, the reflected wave of ultrasonic waves can be received with high accuracy.
  • FIG. 6 is a cross-sectional view showing an example of a conventionally known backing material 913.
  • a configuration in which the backing material 913 is provided only on the upper surface 93a of the sensor 93 is conventionally known.
  • the backing material is not provided on the side surfaces 93b and 93b of the sensor 93, and vibration in the side surface direction cannot be suppressed. Therefore, the sensor 93 shown in FIG. 6 may have poor reception accuracy of the reflected wave of ultrasonic waves.
  • the backing material 113 is provided so as to cover not only the upper surface but also the side surface of the sensor 13, ultrasonic waves are reflected more than before. It is possible to improve the wave reception accuracy.
  • the method for forming the backing material 113 shown in FIG. 5 is not particularly limited, but it is preferably formed by pouring the raw material into the inside of the housing 11 and then curing it.
  • the backing material 113 is formed by curing the poured raw material, as shown in FIG. 5, the backing material 113 is placed so that the surface of the backing material 113 is horizontal with respect to the second bottom wall 111a of the housing 11. Can be formed.
  • the raw material may be poured so as not to exceed the first bottom wall 112, using the first bottom wall 112 (see FIG. 3) as a guideline for the height. That is, the backing material 113 may be formed at a height that does not exceed the first bottom wall 112. As a result, it is possible to prevent the backing material 113 from being excessively inserted.
  • the backing material 113 shown in FIG. 5 is formed so as to cover all the surfaces of the sensors 13A to 13D.
  • all the surfaces of the sensor 13 mean all the surfaces of the surface of the sensor 13 that are exposed to the outside (that is, can be covered with the backing material 113).
  • one surface of the sensor 13 is in contact with the inner surface of the second bottom wall 111a. Therefore, the backing material 113 covers all the surfaces of the sensor 13 except the one surface.
  • the backing material 113 does not have to cover the surfaces of all the sensors 13, and may cover the surfaces of at least one sensor 13.
  • a sensor whose surface is not covered with a backing material has a higher output than a sensor whose surface is covered. Therefore, for example, in the case of a probe for a target person having a large physique, a sensor that is not covered with a backing material may be provided to ensure a high sensor output.
  • the raw material of the backing material 113 is not particularly limited as long as it can suppress the extra vibration of the sensor 13.
  • the backing material 113 is formed by pouring a raw material into the housing 11 and then curing it, it is preferable to use a raw material having low viscosity at the time of pouring and high density and high hardness after curing.
  • examples of such raw materials include thermosetting resins, ultraviolet curable resins, and two-component mixed resins.
  • a sensor (sensor for transmitting and receiving ultrasonic waves) that transmits ultrasonic waves and receives the ultrasonic waves is exemplified as a sensor.
  • the sensor may be, for example, a sensor that only transmits ultrasonic waves (ultrasonic transmission sensor) or a sensor that only receives reflected waves of ultrasonic waves (ultrasonic wave reception sensor). That is, the sensor may be at least one selected from the group consisting of the ultrasonic transmission / reception sensor, the ultrasonic wave transmission sensor, and the ultrasonic wave reception sensor.
  • At least one ultrasonic transmission / reception sensor is arranged inside the recess of the housing.
  • at least one ultrasonic wave transmission sensor and at least one ultrasonic wave reception sensor are inside the recess of the housing 11. , Should be arranged.
  • At least one sensor arranged inside the recess of the housing transmits ultrasonic waves and receives reflected waves of the ultrasonic waves.
  • it is a sensor for transmitting and receiving ultrasonic waves, and when the transmission of ultrasonic waves and the reception of reflected waves of ultrasonic waves are performed by separate sensors, it is a sensor for ultrasonic transmission or a sensor for receiving ultrasonic waves.
  • Second Embodiment> The probe for estimating biological information according to the second embodiment will be described.
  • FIG. 7 is a plan view showing the inside of the housing 21 according to the second embodiment.
  • FIG. 8 is a cross-sectional view of the housing 21 shown in FIG. 7 in the direction of arrow AA.
  • FIG. 9 is a cross-sectional view of the housing 21 shown in FIG. 7 in the direction of arrow BB.
  • the second embodiment is different from the first embodiment in that the housing 21 includes a protrusion 214 protruding inward on the inner surface of the side wall 211b.
  • the points different from those of the first embodiment will be mainly described with reference to FIGS. 7 to 9, and some common points will be omitted.
  • the housing 21 of the second embodiment includes a recess 211 having a second bottom wall 211a and a side wall 211b, and first bottom walls 212 and 212 protruding outward from the side wall 211b. That is, the housing 21 connects the first bottom wall 212, the second bottom wall 211a arranged at a position recessed from the first bottom wall 212, and the first bottom wall 212 and the second bottom wall 211a. It has a side wall 211b, and a recess 211 is formed by the second bottom wall 211a and the side wall 211b. Inside the recess 211 of the housing 21, four sensors 13A to 13D are arranged side by side in the vertical direction.
  • the housing 21 is provided with a protruding portion 214 protruding inward of the housing 21 on the inner surface of the side wall 211b. As shown in FIG. 9, the protruding portion 214 is inclined so that the first sensor 13A side, that is, the lower side of the housing 21 is high, and the fourth sensor 13D side, that is, the upper side of the housing 21 is low.
  • the protruding portion 214 is preferably provided in the vertical direction of the side wall 211b, that is, along the parallel direction of the plurality of sensors 13. This makes it easy to provide the backing material 213 so as to cover the plurality of sensors 13 arranged in the parallel direction without exceeding the protrusion 214 in the height direction (that is, the depth direction) of the recess 211.
  • the protruding portion 214 is preferably provided at a position lower than the first bottom wall 212, that is, between the first bottom wall 212 and the second bottom wall 211a. This makes it easy to provide the backing material 213 in the height direction of the recess 211 to a height that does not exceed the first bottom wall 212.
  • FIG. 10 is a cross-sectional view showing a state in which the backing material 213 is formed on the housing 21 shown in FIG.
  • the backing material 213 shown in FIG. 10 is similar to the backing material 113 (see FIG. 5) of the first embodiment in that it covers the surfaces of the sensors 13A to 13D.
  • the backing material 213 is provided from the second bottom wall 211a to the protruding portion 214.
  • the surface of the backing material 213 is inclined with respect to the second bottom wall 211a.
  • the surface of the backing material 213 is inclined with respect to the second bottom wall 211a to make the surface horizontal, that is, the second.
  • the amount of backing material can be reduced as compared with the case where the backing material is substantially parallel to the bottom wall 211a. As a result, it is possible to reduce the cost of the backing material and to reduce the weight and size of the housing 21.
  • the backing material 213 is formed by pouring the raw material into the housing 21 to the height of the protrusion 214 and then curing the material. That is, the backing material 213 is formed at a height that does not exceed the protrusion 214.
  • the projecting portion 214 in this way, it is possible to provide a guideline for the height when the raw material of the backing material 213 is poured.
  • the protruding portion 214 it is possible to prevent the raw material from overflowing due to the surface tension generated in the protruding portion 214 even when the raw material of the backing material 213 is slightly added more than an appropriate amount. ..
  • the height of the backing material 213 from the second bottom wall 211a can be limited, so that the backing material 213 can be prevented from flowing into the first side wall 212.
  • a space can be secured on the first side wall 212.
  • the wiring of each sensor 13 and the substrate for operating each sensor 13 can be arranged in this space.
  • the backing material 213 of the second embodiment does not have to cover the surfaces of all the sensors 13, and may cover the surface of at least one sensor 13.
  • a sensor whose surface is not covered with a backing material has a higher output than a sensor whose surface is covered. Therefore, for example, in the case of a probe for a target person having a large physique, a sensor that is not covered with a backing material may be provided to ensure a high sensor output.
  • the protrusion 214 shown in FIG. 9 is provided so as to be inclined with respect to the second bottom wall 211a, but the shape of the protrusion 214 is not limited to this.
  • the protrusion 214 may be provided substantially parallel to the second bottom wall 211a.
  • the surface of the backing material 213 may be substantially parallel to the second bottom wall 211a.
  • the biological information estimation device of the present embodiment includes the above-mentioned biological information estimation probe and a main body device unit connected to the probe by wire or wirelessly.
  • FIG. 11 is a block diagram showing a configuration of a biological information estimation device 10 including a biological information estimation probe 1 and a main body device unit 5.
  • the main unit 5 includes a transmission unit 51 that outputs a drive voltage to the sensors 13 (sensors 13A to 13D), a reception unit 52 that receives an electric signal from the sensor 13, and a transmission unit 51 and a reception unit 52.
  • the transmission unit 51 supplies a drive voltage to the sensor 13.
  • the transmission unit 51 has a pulse generator 51a and an amplification unit 51b.
  • the pulse generator 51a generates a pulse signal having a predetermined pulse width and voltage value.
  • the pulse generator 51a may be configured so that the pulse width, the number of pulses, and the frequency can be changed.
  • the amplification unit 51b amplifies the pulse signal from the pulse generator 51a and outputs it as a drive voltage to the sensor 13.
  • the receiving unit 52 receives the electric signal from the sensor 13.
  • the receiving unit 52 includes an amplification unit 52a, a detection unit 52b, and an A / D conversion unit 52c.
  • the amplification unit 52a amplifies the received signal from the sensor 13 and outputs it to the detection unit 52b.
  • the detection unit 52b demodulates the received signal (for example, amplitude modulated wave) received from the amplification unit 52a by a method such as envelope detection, and outputs the processed signal to the A / D conversion unit 52c.
  • the A / D conversion unit 52c A / D-converts the received signal from the detection unit 52b and outputs it to the control unit 57.
  • the switch 53 selects a sensor connected to the transmission unit 51 and the reception unit 52 from the sensors 13A to 13D.
  • the notification unit 54 is, for example, a vibrator, an LED lamp, an alarm, or the like.
  • Various information for example, the position of the probe with respect to the bladder, the arrival of the urination timing, etc. is notified to the subject by the vibration of the vibrator, the lighting mode of the LED lamp, the sound of the alarm, and the like.
  • the communication unit 55 communicates with an external communication device.
  • the communication unit 55 communicates with the Bluetooth (registered trademark) standard.
  • the storage unit 56 temporarily stores the received signal received from the receiving unit 52.
  • the control unit 57 has one or more processors, and controls the transmission unit 51, the reception unit 52, the switch 53, the notification unit 54, and the communication unit 55.
  • control unit 57 controls the switch 53 to switch the sensor 13 connected to the transmission unit 51 and the reception unit 52.
  • the control unit 57 controls the transmission unit 51 to output the drive voltage to the sensor 13.
  • control unit 57 controls the reception unit 52 to convert the reception signal of the sensor 13 into a digital signal, and performs signal processing such as averaging processing on the reception signal from the reception unit 52.
  • the control unit 57 determines the position of the probe 1 with respect to the bladder, the amount of urine in the bladder, the arrival of the urination timing, etc. based on the received signal from the receiving unit 52, and performs processing according to the analysis result. (For example, the notification unit 54 is activated).
  • control unit 57 controls the communication unit 55 to transmit information regarding the reception signal from the reception unit 52 to the outside. Further, the control unit 57 receives a signal from the outside via the communication unit 55 and performs processing according to the signal (for example, the notification unit 54 is operated).
  • the memory 58 stores parameters such as ultrasonic frequency, output, number of pulses, gain (amplification rate), and standby time.
  • FIG. 11 shows a configuration example in which the probe 1 and the main body device portion 5 are physically separated.
  • the configuration of the probe 1 and the main body device portion 5 is not limited to this, and both may be integrally configured.
  • a housing including a recess having a bottom surface portion and a side surface portion, and a step portion provided so as to project outward from the side surface portion.
  • At least one sensor arranged inside the recess and transmitting ultrasonic waves and / or receiving reflected waves of ultrasonic waves.
  • a probe for estimating biological information which comprises a backing material for covering the surface of at least one of the sensors.
  • the backing material may be formed at a height that does not exceed the surface of the stepped portion.
  • the biological information estimation probe includes a plurality of the sensors, and when the probe is attached to the body surface of the subject, the plurality of sensors may be arranged side by side in the vertical direction.
  • the probe for estimating biological information includes a plurality of sensors that transmit ultrasonic waves
  • the sensors that transmit ultrasonic waves may have different ultrasonic wave transmission angles.
  • the housing may be provided with an inwardly protruding protrusion on the inner surface of the side surface.
  • the surface of the backing material may be inclined with respect to the bottom surface portion.
  • the biological information estimation probe includes a urine volume estimation probe, a peristaltic motion estimation probe, a heartbeat detection probe, a respiration detection probe, a lung function detection probe, and a liver function. It may be a detector for detection or a probe for detecting bone abnormality.
  • the technique disclosed herein provides a biological information estimation device including the probe for estimating biological information and a main body device unit connected to the probe by wire or wirelessly.
  • the probe for estimating biological information of the first embodiment was used, and as a comparative example, the probe for estimating biological information without a backing material was used to receive the reflected wave of ultrasonic waves.
  • the results of Examples are shown in FIG. 12, and the results of Comparative Examples are shown in FIG.
  • the waveform represented between the horizontal axis scales 20 to 100 indicates noise.
  • noise was reduced as compared with the comparative example shown in FIG.
  • the signal represented near the horizontal axis scale 110 is a signal of the reflected wave that is the target.
  • the signal of the reflected wave was smaller than that in the comparative example shown in FIG. 13, but the SN ratio was improved as much as the noise was reduced. From these results, it was confirmed that the reception accuracy of the reflected wave of the ultrasonic wave can be improved by the configuration provided with the backing material.

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Abstract

L'invention concerne une sonde d'estimation de volume d'urine (1) comprenant : un boîtier (11) qui présente une première paroi de fond (112), une deuxième paroi de fond (111a) disposée dans une position plus en retrait que la première paroi de fond (112), et une paroi latérale (111b) pour relier la première paroi de fond (112) et la seconde paroi de fond (111a), un évidement (111) étant formé par la seconde paroi de fond (111a) et la paroi latérale (111b) ; au moins un capteur (13) qui est disposé à l'intérieur de l'évidement (111) et qui transmet des ondes ultrasonores et/ou reçoit des ondes ultrasonores réfléchies ; et un matériau de support (113) pour recouvrir au moins un capteur (13).
PCT/JP2020/036218 2019-09-25 2020-09-25 Sonde d'estimation de bio-informations et dispositif d'estimation de bio-informations WO2021060452A1 (fr)

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JP2007282058A (ja) * 2006-04-10 2007-10-25 Nippon Ceramic Co Ltd 超音波センサ
JP2008048276A (ja) * 2006-08-18 2008-02-28 Fujifilm Corp 超音波トランスデューサ及び超音波トランスデューサアレイ
WO2016027508A1 (fr) * 2014-08-22 2016-02-25 オリンパス株式会社 Endoscope à ultrasons, dispositif d'alimentation en liquide pour endoscope à ultrasons, et système d'endoscope à ultrasons
WO2016199182A1 (fr) * 2015-06-12 2016-12-15 トリプル・ダブリュー・ジャパン株式会社 Dispositif d'estimation de quantité d'urine et méthode d'estimation de quantité d'urine
WO2017187755A1 (fr) * 2016-04-28 2017-11-02 富士フイルム株式会社 Unité de vibreurs à ultrasons

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Publication number Priority date Publication date Assignee Title
JPH0824259A (ja) * 1994-07-13 1996-01-30 Hitachi Ltd 針状超音波探触子
JP2007282058A (ja) * 2006-04-10 2007-10-25 Nippon Ceramic Co Ltd 超音波センサ
JP2008048276A (ja) * 2006-08-18 2008-02-28 Fujifilm Corp 超音波トランスデューサ及び超音波トランスデューサアレイ
WO2016027508A1 (fr) * 2014-08-22 2016-02-25 オリンパス株式会社 Endoscope à ultrasons, dispositif d'alimentation en liquide pour endoscope à ultrasons, et système d'endoscope à ultrasons
WO2016199182A1 (fr) * 2015-06-12 2016-12-15 トリプル・ダブリュー・ジャパン株式会社 Dispositif d'estimation de quantité d'urine et méthode d'estimation de quantité d'urine
WO2017187755A1 (fr) * 2016-04-28 2017-11-02 富士フイルム株式会社 Unité de vibreurs à ultrasons

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