WO2019203098A1 - 生体音測定装置、生体音測定装置の作動方法、生体音測定装置の作動プログラム - Google Patents

生体音測定装置、生体音測定装置の作動方法、生体音測定装置の作動プログラム Download PDF

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Publication number
WO2019203098A1
WO2019203098A1 PCT/JP2019/015680 JP2019015680W WO2019203098A1 WO 2019203098 A1 WO2019203098 A1 WO 2019203098A1 JP 2019015680 W JP2019015680 W JP 2019015680W WO 2019203098 A1 WO2019203098 A1 WO 2019203098A1
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WIPO (PCT)
Prior art keywords
sound
measuring device
measurement
biological
sound measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/015680
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English (en)
French (fr)
Japanese (ja)
Inventor
松本　直樹
賢治 橋野
朝井　慶
直人 大上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Healthcare Co Ltd
Original Assignee
Omron Healthcare Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Omron Healthcare Co Ltd filed Critical Omron Healthcare Co Ltd
Priority to DE112019002033.1T priority Critical patent/DE112019002033B4/de
Priority to CN201980026018.XA priority patent/CN112004476A/zh
Publication of WO2019203098A1 publication Critical patent/WO2019203098A1/ja
Priority to US17/060,172 priority patent/US12036064B2/en
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
    • A61B7/00—Instruments for auscultation
    • A61B7/003—Detecting lung or respiration noise
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B7/00—Instruments for auscultation
    • A61B7/02—Stethoscopes
    • A61B7/04—Electric stethoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
    • A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds

Definitions

  • the present invention relates to a biological sound measuring device that is used in contact with the body surface of a living body, an operating method thereof, and an operating program.
  • a microphone for breathing sounds as airflow sounds to ventilate the respiratory tract and alveoli body sounds such as side noise or abnormal sounds during breathing that occur in pathological conditions such as wheezing or pleural friction sounds, or heart sounds
  • body sounds such as side noise or abnormal sounds during breathing that occur in pathological conditions such as wheezing or pleural friction sounds, or heart sounds
  • a device that extracts an electrical signal see, for example, Patent Document 1.
  • Patent Document 1 describes an adhesive patch for measuring an acoustic signal from a human body.
  • the adhesive patch includes a first microphone for recording an acoustic signal from the body and a second microphone for recording an ambient noise signal, and the first patch is based on a detection signal of the second microphone. The noise of the signal detected by one microphone is removed.
  • Patent Document 2 and Patent Document 3 disclose a sensitivity adjustment method for each microphone in an electronic device equipped with a plurality of microphones.
  • this sensitivity adjustment method sound generated from a speaker is measured by a plurality of microphones, and the sensitivity of the plurality of microphones is adjusted from the measurement result.
  • the sensitivity ratio or sensitivity difference of the plurality of microphones is maintained at a predetermined value. Need to be. However, it is assumed that the sensitivity ratio or sensitivity difference of a plurality of microphones may deviate from the value at the time of manufacture due to the usage environment of the apparatus and aging.
  • a speaker that generates a test sound is provided in the apparatus, and the sensitivity ratio or the sensitivity difference is calculated based on the intensity of the test sound measured by each of a plurality of microphones. Can be sought.
  • a biological sound measuring device that measures a biological sound in contact with the body surface of a living body has a sound measuring device for measuring the body sound in a space sealed by the body surface of the living body, and the outside of the space.
  • a sound measuring device for measuring ambient sounds is arranged in a place that is not sealed by the body surface.
  • Patent Documents 2 and 3 describe performing sensitivity adjustment of a plurality of microphones. However, these plurality of microphones are not used for measurement of body sound and do not recognize the above-described problems.
  • the present invention has been made in view of the above circumstances, and the biological sound measuring apparatus and biological sound measuring apparatus that can prevent a decrease in measurement accuracy when measuring a biological sound using a plurality of sound measuring devices are provided. It is an object of the present invention to provide a method and an operation program for a biological sound measurement device.
  • a first sound measuring device for measuring biological sounds A housing that houses the first sound measuring instrument and has an opening that is closed by the body surface in a state of being pressed against the body surface of a living body; A second sound measuring device provided outside the housing for measuring sound around the housing; A sound is generated from the sound generation unit in a state where the opening of the housing is not closed, and the sound intensity measured by the first sound measuring device and the sound intensity measured by the second sound measuring device are measured.
  • a biological sound measuring device comprising a main body having a control unit for adjusting sensitivity.
  • the sound is generated from the sound generation unit in a state where the opening of the housing is not blocked, the sound is generated under substantially the same conditions by the first sound measuring device and the second sound measuring device. Measurement can be performed. Therefore, it can be determined with high accuracy whether or not the relationship of measurement sensitivity satisfies the condition. Further, if the condition is not satisfied, for example, it is notified that the measurement accuracy of the body sound cannot be ensured. For this reason, it is possible to prevent the measurement of the body sound in a state where the condition is not satisfied, and it is possible to prevent a decrease in the measurement accuracy of the body sound.
  • the measurement sensitivities of the first sound measuring device and the second sound measuring device are adjusted so as to satisfy the above condition, for example. For this reason, it is possible to prevent the measurement of the body sound in a state where the condition is not satisfied, and it is possible to prevent a decrease in the measurement accuracy of the body sound.
  • the biological sound measuring device according to (2) The cover member is a living body sound measuring device that is made of a material that prevents transmission of sound that can be measured by the first sound measuring device and the second sound measuring device.
  • the sound from the outside is more difficult to reach inside the cover member due to the mounting of the cover member. For this reason, it can be determined with high accuracy whether the relationship of measurement sensitivity satisfies the condition.
  • This configuration eliminates the need for a special sensor or the like for detecting the attachment of the cover member, thereby enabling downsizing and cost reduction.
  • the biological sound measuring device is a biological sound measurement device provided in the cover member.
  • the cover member since the cover member has the sound generating portion, the main body can be downsized.
  • the control portion can easily control the sound generating portion, and the manufacturing cost can be reduced.
  • the biological sound measurement device is in the state where the opening of the housing is not closed, and the intensity of sound measured by the first sound measuring device or the second sound measuring device is predetermined.
  • a biological sound measurement device that generates the sound from the sound generation unit when the value is equal to or less than a second threshold.
  • the above determination can be performed in a state where the device is placed in a quiet environment. For this reason, this determination can be performed with high accuracy.
  • control unit can easily control the sound generation unit, and the manufacturing cost can be reduced.
  • a first sound measuring device for measuring a body sound for measuring a body sound, and an opening which is housed in the first sound measuring device and is blocked by the body surface when pressed against the body surface of the living body
  • An operating method of a biological sound measuring device comprising: a housing; and a second sound measuring device provided outside the housing for measuring sounds around the housing, A sound is generated from the sound generation unit in a state where the opening of the housing is not closed, and the sound intensity measured by the first sound measuring device and the sound intensity measured by the second sound measuring device are measured.
  • a method for operating a biological sound measuring device comprising the step of adjusting sensitivity.
  • An operating program for a biological sound measuring device comprising: a housing; and a second sound measuring device provided outside the housing for measuring sounds around the housing, A sound is generated from the sound generation unit in a state where the opening of the housing is not closed, and the sound intensity measured by the first sound measuring device and the sound intensity measured by the second sound measuring device are measured.
  • An operating program for a body sound measuring apparatus for causing a computer to execute a step of adjusting sensitivity.
  • the biological sound measuring device which can prevent the fall of the measurement precision at the time of measuring a biological sound using a several sound measuring device, the operating method of a biological sound measuring device, and the action
  • FIG. 2 is a side view illustrating a schematic configuration example of a main body unit 1 of the biological sound measuring device 100.
  • FIG. FIG. 2 is a schematic sectional view taken along line AA in the main body 1 shown in FIG.
  • It is a schematic diagram which shows schematic structure of the storage case 10 which accommodates the main-body part 1 shown in FIG.
  • It is a cross-sectional schematic diagram of the storage case 10 in a state in which the main body 1 is stored.
  • 5 is a flowchart for explaining an operation example of the biological sound measurement device 100 in an inspection mode.
  • It is a cross-sectional schematic diagram of a biological sound measuring device 100A, which is a modification of the biological sound measuring device 100.
  • FIG. 9 is a schematic cross-sectional view taken along the line BB in the biological sound measuring device 100C shown in FIG. It is a flowchart for demonstrating the operation example at the time of the test
  • the biological sound measurement device of the embodiment measures lung sounds (breathing sounds and sub-noises) as an example of biological sounds from a human living body, and notifies that when measuring sound includes wheezing. . By doing so, it is possible to support the determination of the necessity of medication to the measurement subject, the determination of whether to take the measurement subject to the hospital, or the diagnosis of the measurement subject by the doctor.
  • the biological sound measuring device of the embodiment includes a first sound measuring device for measuring lung sounds, a second sound measuring device for measuring ambient sounds, and a sound generation unit for generating test sounds. , And the space in which the first sound measuring device is accommodated is sealed by the body surface, and the lung sound of the living body is measured by the first sound measuring device.
  • the second sound measuring device is used for removing noise other than the lung sound included in the sound measured by the first sound measuring device.
  • the body part of the biological sound measuring device of the embodiment generates a test sound from the sounding part in a state where the space where the first sound measuring device is arranged is not sealed by the body surface. Then, based on the strength of the test sound measured by the first sound measuring device and the strength of the test sound measured by the second sound measuring device, the measurement sensitivity and the first sound measuring device of the first sound measuring device are measured. It is determined whether or not the relationship with the measurement sensitivity of the second sound measuring device satisfies a predetermined condition, and when it is determined that this relationship does not satisfy the condition, a notification is made or the first sound measuring device And adjustment of the measurement sensitivity of one or both of the second sound measuring device.
  • this notification examples include notification that wheezing cannot be detected, notification that prohibits measurement of body sound and prompts repair of the device, and the like.
  • the measurement sensitivity of one or both of the first sound measuring device and the second sound measuring device is adjusted so that the above condition is satisfied.
  • a biological sound measurement device 100 that is an embodiment of the biological sound measurement device of the present invention described below includes a main body 1 and a storage case 10 for storing the main body 1. It is constituted by.
  • FIG. 1 is a side view showing a schematic configuration example of the main body 1 of the biological sound measuring device 100.
  • the main body 1 has a rod-shaped gripping portion 1b made of a housing made of resin or metal, and a head portion 1a is provided on one end side of the gripping portion 1b.
  • control unit 4 that performs overall control of the whole body sound measuring device 100, a battery 5 that supplies a voltage necessary for operation, a liquid crystal display panel, an organic EL (Electro Luminescence) display panel, and the like. And a display unit 6 for displaying an image. Moreover, the terminal group 7 for making an electrical connection with the storage case 10 mentioned later is provided in the other end side of the holding part 1b.
  • the control unit 4 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, and controls each hardware of the biological sound measuring device 100 according to a program.
  • the ROM of the control unit 4 stores a program including an operation program for the biological sound measurement device.
  • the head unit 1a is provided with a measuring unit 3 projecting to one side (downward in FIG. 1) in a direction substantially orthogonal to the longitudinal direction of the gripping unit 1b, and a sounding unit 8.
  • a pressure receiving portion 3 a that is in contact with the body surface S of the living body that is the subject and receives pressure from the body surface S is provided.
  • the main body 1 is used by pressing the pressure receiving portion 3a of the measurement unit 3 against the body surface S with the index finger in a state where, for example, the index finger of the user's hand Ha is placed on the back surface of the measurement unit 3 in the head portion 1a.
  • FIG. 2 is a schematic sectional view taken along line AA in the main body 1 shown in FIG.
  • the measurement unit 3 accommodates the first sound measuring device M1 for measuring sound and the first sound measuring device M1 in the internal accommodation space SP1, and presses against the body surface S of the living body.
  • a bottomed cylindrical first housing 31 having an opening 31h that is closed by the body surface S in a state of being formed, a housing cover 32 that closes the opening 31h from the outside of the first housing 31 and covers the first housing 31;
  • a second sound measuring device M2 that measures sound; and a second housing 34 that forms an accommodation space SP2 that accommodates the second sound measuring device M2 and has an opening 34h.
  • the measurement unit 3 is fixed to the housing 2 by being fitted into an opening formed in the housing 2 constituting the head portion 1a in a state where a part of the housing cover 32 is exposed.
  • the tip of the exposed portion of the housing cover 32 from the housing 2 is a flat surface or a curved surface, and this flat surface or curved surface constitutes the pressure receiving portion 3a.
  • the housing 2 is made of a resin that can transmit sound.
  • the first sound measuring device M1 is for measuring a lung sound as a body sound.
  • the first sound measuring device M1 has a wider band (for example, 10 Hz to 10 kHz) than the frequency range of the lung sound (generally 10 Hz to 1 kHz). It is configured by a MEMS (Micro Electro Mechanical Systems) type microphone or a capacitance type microphone that measures sound in the following frequency range.
  • MEMS Micro Electro Mechanical Systems
  • the first sound measuring device M1 is electrically connected to the control unit 4 shown in FIG. 1 by a lead wire (not shown) and transmits the information of the measured sound to the control unit 4.
  • the pressure receiving portion 3a of the housing cover 32 contacts the body surface S, and the accommodation space SP1 is sealed by the body surface S via the housing cover 32 by the pressure from the body surface S. It becomes a state (hereinafter, this state is referred to as a sealed state).
  • the pressure receiving part 3a vibrates by the lung sound transmitted from the living body to the body surface S
  • the internal pressure of the accommodation space SP1 fluctuates due to this vibration, and the electric signal corresponding to the lung sound is generated by the fluctuation of the internal pressure. Will be measured by M1.
  • the first housing 31 has a substantially convex shape downward in FIG. 2, and is made of a material having higher acoustic impedance and higher rigidity than air such as resin or metal.
  • the first housing 31 is made of a material that reflects sound in the measurement frequency band of the first sound measuring device M1 so that sound is not transmitted from the outside into the accommodation space SP1 in a sealed state.
  • the housing cover 32 is a bottomed cylindrical member, and the shape of the hollow portion substantially matches the outer wall shape of the first housing 31.
  • the housing cover 32 is made of a material having acoustic impedance that is close to that of the human body, air, or water and has good biocompatibility.
  • a material of the housing cover 32 for example, silicone or elastomer is used.
  • the second sound measuring device M2 is for measuring the sound around the first housing 31 (environmental sound such as a human voice or rubbing sound between the main body 1 and the living body or clothes).
  • a MEMS microphone or a capacitive microphone that measures sound in a wider band (for example, a frequency range of 10 Hz to 10 kHz) than the frequency range of lung sounds.
  • the second sound measuring device M2 is electrically connected to the control unit 4 shown in FIG. 1 through a lead wire (not shown) and transmits the information of the measured sound to the control unit 4.
  • the second sound measuring device M2 is fixed to the surface of the first housing 31 opposite to the pressure receiving portion 3a side.
  • the periphery of the second sound measuring device M2 is covered with a second housing 34.
  • the second housing 34 is made of a material (for example, a resin) that allows sound generated around the main body 1 to easily enter the housing space SP2 that houses the second sound measuring device M2.
  • the second housing 34 has an opening 34h. For this reason, it has a structure in which sound generated around the main body 1 easily enters from the opening 34h.
  • the second sound measuring device M2 is provided in the measurement unit 3 in the example of FIG. 2, it is only necessary to be able to measure the sound generated around the first housing 31, and the installation location is particularly limited. is not.
  • the second sound measuring device M2 may be provided in a place where the user has a low possibility of touching the grip portion 1b other than the head portion 1a during use.
  • the sound generation unit 8 provided in the main body unit 1 shown in FIG. 1 is controlled by the control unit 4 to test sounds in frequency bands that can be measured by the first sound measuring device M1 and the second sound measuring device M2. Generate as sound.
  • the sound generation unit 8 may be anything as long as it can convert an electric signal into physical vibration. For example, various speakers can be used.
  • FIG. 3 is a schematic diagram showing a schematic configuration of a storage case 10 that stores the main body 1 shown in FIG.
  • FIG. 4 is a schematic cross-sectional view of the storage case 10 in a state where the main body 1 is stored.
  • the storage case 10 includes a base 11 and a bottomed cylindrical lid portion 12 that can be attached to and detached from the base 11.
  • the base 11 includes a display unit 13 for displaying an image by a liquid crystal display panel or an organic EL display panel, and a recess 14 for inserting the other end of the grip 1b of the main body 1 to support the main body 1.
  • a terminal group 15 disposed at the bottom of the recess 14, a contact sensor 16 for detecting contact between the base 11 and the lid 12, and a wiring 17 are provided.
  • the terminal group 15 of the base 11 is electrically connected to the terminal group 7 of the main body 1 with the main body 1 inserted in the recess 14.
  • the terminal group 15 is connected to the display unit 13 and the contact sensor 16 by wiring 17. Therefore, in a state where the main body 1 is inserted into the recess 14, the output signal of the contact sensor 16 is transmitted to the control unit 4 of the main body 1 via the wiring 17, the terminal group 15, and the terminal group 7.
  • the contact sensor 16 is configured by, for example, a piezoelectric element, and transmits a mounting detection signal to the control unit 4 when the lid 12 is mounted on the base 11.
  • control unit 4 of the main body 1 controls the display unit 13 via the terminal group 7, the terminal group 15, and the wiring 17.
  • the main body 1 is inserted into the recess 14 and supported by the base 11, and the lid 12 is attached to the base 11 (in other words, the storage case 10 is attached to the main body 1.
  • the main body 1 is disposed in the storage space SP3 surrounded by the inner wall of the lid 12 and the base 11.
  • the pressure receiving portion 3 a of the measurement unit 3 and the inner wall of the lid portion 12 are not in contact, and the opening 31 h of the first housing 31 of the measurement unit 3 is not blocked. It is in a state.
  • the sounding portion 8 of the main body 1 is placed inside the storage case 10 (inside the storage space SP3).
  • the storage case 10 does not block the opening 31 h of the first housing 31 of the main body 1, and the first housing 31 and the second sound are not blocked. It covers the measuring device M2.
  • the storage case 10 constitutes a cover member.
  • the material of the base 11 and the lid 12 of the storage case 10 is not particularly limited, but is preferably a material that makes it difficult for sound to enter the storage space SP3 from the outside of the storage case 10.
  • the material of the base 11 and the lid 12 of the storage case 10 is used to prevent transmission of sound in the measurable frequency band of each of the first sound measuring device M1 and the second sound measuring device M2 (this frequency band). It is preferable to use a material that can reflect the sound of As such a material, for example, a metal such as SUS, or a rubber such as silicone or urethane can be used.
  • the main body 1 of the biological sound measuring device 100 is equipped with a measurement mode in which lung sounds are measured to determine the presence or absence of wheezing (whether wheezing is detected).
  • the control unit 4 converts the lung sound into the lung sound based on the first sound measured by the first sound measuring device M1 and the second sound measured by the second sound measuring device M2. Determine whether wheezing is included.
  • control unit 4 uses the second sound measured by the second sound measuring device M2 to generate noise other than the lung sound mixed in the first sound measured by the first sound measuring device M1. Remove. Then, the control unit 4 determines that “wheezing is present” when the first sound after the noise removal becomes, for example, an intensity that can be determined as wheezing.
  • the control unit 4 refers to the second sound measured at that timing and refers to the second sound. If the intensity is high, it is determined that the influence of the external sound is large, and it is determined that there is no wheezing at that timing.
  • the relationship between the measurement sensitivity SM1 of the first sound measuring device M1 and the measurement sensitivity SM2 of the second sound measuring device M2 is set so as to satisfy a predetermined condition.
  • the measurement sensitivity SM1 and the measurement sensitivity SM2 are set in advance when the biological sound measuring device 100 is manufactured.
  • the measurement sensitivity of the sound measuring device refers to the ratio between the analog output voltage value or digital output value of the sound measuring device and the input sound pressure.
  • the above relationship is, for example, the ratio between the measurement sensitivity SM1 and the measurement sensitivity SM2, or the difference between the measurement sensitivity SM1 and the measurement sensitivity SM2.
  • the above-mentioned conditions are, for example, that the above ratio falls within a predetermined range, or that the above difference falls within a predetermined range.
  • the measurement sensitivity SM1 of the first sound measurement device M1 and the measurement sensitivity SM2 of the second sound measurement device M2 deviate from the values set at the time of manufacturing the biological sound measurement device 100 due to deterioration over time. Can occur.
  • the main body 1 of the biological sound measurement device 100 is equipped with an inspection mode for inspecting the relationship between the measurement sensitivities of the first sound measurement device M1 and the second sound measurement device M2. is doing.
  • control unit 4 determines whether or not the opening 31h of the first housing 31 is not closed. When it is determined that the state is this state, the control unit 4 outputs a test sound from the sound generation unit 8. generate.
  • the control unit 4 detects that the storage case 10 is attached to the main body unit 1, the control unit 4 determines that the opening 31 h of the first housing 31 is not blocked, and generates a test sound from the sound generation unit 8. generate.
  • control unit 4 When the control unit 4 receives a contact detection signal from the contact sensor 16, the control unit 4 detects that the storage case 10 is attached to the main body unit 1.
  • control unit 4 In the inspection mode, the control unit 4 generates a test sound from the sound generation unit 8, and then uses the test sound intensity m1 measured by the first sound measuring device M1 and the second sound measuring device M2. Based on the measured intensity m2 of the test sound, it is determined whether or not the relationship between the measurement sensitivity SM1 and the measurement sensitivity SM2 satisfies the above condition, and control is performed according to the determination result.
  • the control unit 4 When it is determined that the above relationship does not satisfy the above condition, the control unit 4 notifies the user that the measurement accuracy of the biological sound cannot be ensured, for example, as the control according to the determination result. Take control.
  • the control unit 4 performs notification by causing the display unit 13 of the storage case 10 to display, for example, a message indicating that wheezing cannot be detected or a message that prohibits measurement of lung sounds and prompts repair of the device.
  • a speaker may be mounted on the storage case 10 and notification may be performed by outputting these messages from the speaker.
  • the main unit 1 and an electronic device such as a smartphone are configured to be communicable, a message is transmitted from the control unit 4 to the electronic device, and a message or sound is output using the display or speaker of the electronic device. Good.
  • an LED Light Emitting Diode
  • the control unit 4 causes the LED to emit light in red, for example, if it is determined that the above relationship does not satisfy the above condition. The user may be notified that the measurement accuracy is not ensured.
  • control unit 4 adjusts one or both of the measurement sensitivities SM1 and SM2 so that the relationship satisfies the condition as control according to the determination result. You may go.
  • control unit 4 adjusts the measurement sensitivity SM1 by adjusting the gain of the amplifier mounted on the first sound measuring device M1, and the control unit 4 adjusts the gain of the amplifier mounted on the second sound measuring device M2.
  • the measurement sensitivity SM2 is adjusted by adjusting the gain.
  • FIG. 5 is a flowchart for explaining an operation example of the biological sound measurement device 100 in the examination mode.
  • the control unit 4 determines whether or not the storage case 10 is attached to the main body 1 (step S1).
  • step S1 YES
  • a test sound is generated from the sound generator 8 (step S2).
  • control unit 4 When the storage case 10 is not attached to the main body unit 1, the control unit 4 repeats the process of step S1.
  • the control unit 4 displays a message prompting storage in the storage case 10 on the display unit 6 of the main body 1 when the time when it is determined that the storage case 10 is not attached to the main body 1 is a predetermined time or longer. It may be displayed and notified to the user.
  • step S2 When a test sound is generated in step S2, the test sound is measured by each of the first sound measuring device M1 and the second sound measuring device M2 (step S3).
  • the control unit 4 determines the test intensity m1 measured by the first sound measuring instrument M1 and the test intensity measured by the second sound measuring instrument M2. m2 is obtained, the measurement sensitivity SM1 is calculated from the intensity m1 and the intensity of the test sound, and the measurement sensitivity SM2 is calculated from the intensity m2 and the intensity of the test sound (step S4).
  • control unit 4 obtains a ratio or difference between the measurement sensitivity SM1 and the measurement sensitivity SM2 calculated in step S4, and determines whether or not the ratio or difference is within a predetermined range (predetermined range) ( Step S5).
  • step S5 When this ratio or difference is within a predetermined range (step S5: YES), the control unit 4 displays on the display unit 13 of the storage case 10 that wheezing can be detected. To the user (step S6).
  • step S5 NO
  • the control unit 4 displays on the display unit 13 of the storage case 10 that wheezing cannot be detected. To the user (step S7).
  • step S7 the control unit 4 causes the first sound measuring device M1 and the second sound measurement so that the relationship between the measurement sensitivities SM1 and SM2 calculated in step S4 satisfies the above conditions.
  • the sensitivity of one or both of the devices M2 may be adjusted, and then the process of step S6 may be performed.
  • this condition is not satisfied, for example, a notification that wheezing cannot be detected, a notification that prohibits the use of the device and prompts repairs are performed. For this reason, it is possible to prevent the measurement of the lung sound in a state where this condition is not satisfied, and it is possible to prevent a decrease in the measurement accuracy of the lung sound.
  • the measurement sensitivities of the first sound measuring device M1 and the second sound measuring device M2 are adjusted so as to satisfy the above conditions. For this reason, it is possible to prevent the measurement of the lung sound in a state where the condition is not satisfied, and it is possible to prevent a decrease in the measurement accuracy of the lung sound.
  • the biological sound measuring device 100 when the main body 1 is stored in the storage case 10, the first sound measuring device M1 and the second sound measuring device M2 mounted on the main body 1 are External sounds other than the test sound generated from the sound generation unit 8 are difficult to reach.
  • the material of the base 11 and the lid 12 of the storage case 10 is a material that can prevent transmission of sound in the measurable frequency band of each of the first sound measuring device M1 and the second sound measuring device M2. The following effects can be obtained.
  • the first sound measuring device M ⁇ b> 1 and the second sound measuring device M ⁇ b> 2 mounted on the main body 1 are connected to the test sound generated from the sound generator 8. Will be able to measure only. Therefore, the determination in step S5 in FIG. 5 can be performed with higher accuracy.
  • the material of the base 11 and the lid 12 of the storage case 10 prevents the transmission of sound in the measurable frequency band of each of the first sound measuring device M1 and the second sound measuring device M2. It is assumed that it is made of a material that can be used.
  • control unit 4 detects that the storage case 10 is attached to the main body unit 1 based on the sound intensity measured by the first sound measuring device M1 or the second sound measuring device M2. May be.
  • the control unit 4 causes the first sound measuring device M1 or the second sound measuring device M2 to start measuring the sound, and the first sound measuring device M1 or the second sound measuring device.
  • the intensity of the sound measured by the container M2 is equal to or less than a predetermined first threshold value, it may be detected that the storage case 10 is attached to the main body 1.
  • the storage case 10 when the storage case 10 is attached to the main body 1, the sound from the outside hardly reaches the first sound measuring device M1 and the second sound measuring device M2. For this reason, the intensity of the sound measured by each of the first sound measuring device M1 and the second sound measuring device M2 is larger than when the main body 1 is outside the storage space SP3 of the storage case 10. descend. Therefore, when the sound intensity measured by the first sound measuring device M1 or the second sound measuring device M2 is equal to or lower than the first threshold value, the storage case 10 is attached to the main body 1. It can be determined that
  • the contact sensor 16 can be omitted from the storage case 10, so that the cost of the storage case 10 can be reduced.
  • the contact sensor 16 is omitted, the terminals of the terminal group 7 of the control unit 4 can be reduced, and the main body 1 and the storage case 10 can be reduced in size and cost.
  • the sound generator 8 is provided in the main body 1, but the sound generator 8 may be provided in the storage case 10. This will be specifically described below.
  • FIG. 6 is a schematic cross-sectional view of a biological sound measuring device 100A, which is a modification of the biological sound measuring device 100.
  • the biological sound measuring device 100A shown in FIG. 6 is the biological sound measuring device 100 in which the main body 1 is changed to the main body 1A and the storage case 10 is changed to the storage case 10A.
  • the hardware configuration of the main unit 1A is the same as that of the main unit 1 except that the sound generation unit 8 is deleted.
  • the hardware configuration of the storage case 10A is the same as that of the storage case 10 except that the sound generating unit 8 is provided on the base 11, and the sound generating unit 8 and the terminal group 15 are connected by wiring not shown. It is.
  • the sounding portion 8 of the storage case 10 ⁇ / b> A is disposed in the storage space SP ⁇ b> 3 between the base 11 and the lid 12 in a state where the lid 12 is attached to the base 11.
  • This sounding part 8 is the same as the biological sound measuring apparatus 100 in that it is controlled by the control part 4 of the main body part 1A.
  • the sounding unit 8 is arranged in the storage space SP ⁇ b> 3 between the base 11 and the lid 12 in a state where the main body 1 ⁇ / b> A is stored in the storage case 10. For this reason, it is possible to determine with high accuracy whether or not the relationship between the measurement sensitivity SM1 and the measurement sensitivity SM2 satisfies the condition, like the biological sound measurement device 100. Further, since the sound generation part 8 is provided in the storage case 10A, the main body part 1A can be downsized.
  • the body sound measurement device 100 uses the storage case 10 for storing the main body 1, so that the environment suitable for the inspection mode (the opening 31 h is not blocked and the sound from the surroundings is blocked). ).
  • an environment suitable for the inspection mode can be obtained by using a cover member that covers a part of the main body 1 instead of the storage case 10. This will be specifically described below.
  • FIG. 7 is a side view of a biological sound measuring device 100B, which is a modification of the biological sound measuring device 100.
  • a biological sound measuring device 100B shown in FIG. 7 includes a main body 1B and a cover member 12A used in the inspection mode.
  • FIG. 7 shows a state where the cover member 12A is attached to the main body 1B.
  • the hardware configuration of the main unit 1B is the same as that of the main unit 1 except that the terminal group 7 is deleted.
  • the cover member 12A is a bottomed cylindrical member for covering the portion of the main body 1B where the measurement unit 3 and the sounding portion 8 are provided. 12 A of cover members are mounted
  • a gap is formed between the inner wall of the cover member 12A and the pressure receiving portion 3a. That is, in the state in which the cover member 12A is mounted on the main body 1B, the cover member 12A does not block the opening 31h of the first housing 31 of the main body 1B, and the first housing 31 and the second sound measuring device. It is the structure which covers M2 and the sound generation part 8.
  • the material of the cover member 12A is not particularly limited, but similarly to the storage case 10, it prevents transmission of sound in each measurable frequency band of the first sound measuring device M1 and the second sound measuring device M2 ( It is preferable to use a material that can reflect sound in this frequency band.
  • the operation of the biological sound measuring device 100B in the examination mode is performed by the control unit 4 in order to determine whether or not the cover member 12A is attached to the main body 1B, instead of the process of step S1 in the flowchart of FIG. And when it determines with 12 A of cover members having been mounted
  • the control unit 4 to detect that the cover member 12A is attached to the main body 1B, for example, the following method can be used.
  • the first method is a method in which a contact sensor is provided in the grip 1b of the main body 1B, and the attachment of the cover member 12A is detected by this contact sensor.
  • the second method is, for example, a method of providing an operation button for inputting that the mounting of the cover member 12A is completed on the grip portion 1b.
  • the user of the biological sound measurement device 100B presses the operation button after attaching the cover member 12A to the main body 1B.
  • a mounting completion signal is input to the control unit 4.
  • the control unit 4 detects that the cover member 12A is mounted on the main body 1B.
  • the body sound measuring device 100 described so far has a main body portion so that sounds other than the test sound generated from the sound generating portion 8 are not easily measured by the first sound measuring device M1 and the second sound measuring device M2. In the state where 1 is stored in the storage case 10, a test sound is generated from the sound generator 8.
  • the main body 1 exists in a quiet environment, the sound other than the test sound generated from the sound generation section 8 is small, so that the first case can be obtained without storing the main body 1 in the storage case 10. It is possible to inspect the measurement sensitivity of the sound measuring device M1 and the second sound measuring device M2.
  • a biological sound measuring device 100C that performs a measurement sensitivity test without using the storage case 10 will be described.
  • FIG. 8 is a schematic diagram showing a schematic configuration of a biological sound measuring device 100C which is a fourth modification of the biological sound measuring device 100.
  • the hardware configuration of the biological sound measuring device 100C is the same as that of the main body 1 of the biological sound measuring device 100 except that the measuring unit 3 is changed to the measuring unit 3A and the terminal group 7 is deleted.
  • the biological sound measurement device 100C is an example of a main body portion in claims.
  • FIG. 9 is a schematic sectional view taken along the line BB in the biological sound measuring device 100C shown in FIG. In FIG. 9, the same components as those in FIG.
  • the measurement unit 3A of the biological sound measurement device 100C has the same configuration as the measurement unit 3 except that a contact sensor 35 is added to the surface of the housing cover 32 constituting the pressure receiving portion 3a.
  • the contact sensor 35 is for detecting contact of an object with the pressure receiving portion 3a.
  • the contact sensor 35 includes, for example, a piezoelectric sensor or a set of a light emitting element that emits light toward the body surface S side and a light receiving element that receives reflected light of the light from the light emitting element.
  • the contact sensor 35 transmits a contact detection signal to the control unit 4 when detecting that an object has contacted the pressure receiving unit 3a.
  • FIG. 10 is a flowchart for explaining an operation example in the examination mode of the biological sound measurement device 100C shown in FIG. In FIG. 10, the same processes as those shown in FIG.
  • control unit 4 of the biological sound measurement device 100C determines whether or not an object is in contact with the pressure receiving unit 3a based on the output signal of the contact sensor 35 (step S10).
  • the opening 31h of the measurement unit 3A may be blocked by this object. For this reason, when the object is in contact with the pressure receiving unit 3a, the control unit 4 of the biological sound measurement device 100C determines that the opening 31h of the measurement unit 3A is closed, and the pressure receiving unit 3a. When the object is not in contact with this, it is determined that the opening 31h of the measurement unit 3A is not closed.
  • step S10 When the object is in contact with the pressure receiving unit 3a (step S10: YES), the control unit 4 of the biological sound measurement device 100C performs the determination in step S10 again. Note that the control unit 4 of the biological sound measurement device 100C displays a message that prompts the measurement unit 3A not to contact anything when the pressure is in contact with the pressure receiving unit 3a for a predetermined time or longer. May be displayed to inform the user.
  • step S10 When it is determined that no object is in contact with the pressure receiving unit 3a (step S10: NO), the control unit 4 of the biological sound measurement device 100C uses the first sound measurement device M1 or the second sound measurement device M2. Information on the measured sound is acquired, and it is determined whether or not the intensity of the acquired sound is equal to or less than a predetermined second threshold (step S11).
  • the second threshold value is a value for determining whether the environment is suitable for measurement of the test sound generated from the sound generation unit 8, and is a value sufficiently lower than the intensity of the test sound generated from the sound generation unit 8. Is set.
  • step S11 When the determination in step S11 is NO, the control unit 4 of the biological sound measurement device 100C performs the process in step S11 again. Note that the control unit 4 of the biological sound measurement device 100C displays a message prompting the user to place the biological sound measurement device 100C in a silent environment when the time during which the determination in step S11 is NO is a predetermined time or longer. May be displayed to inform the user.
  • step S11 When the determination in step S11 is YES, the control unit 4 of the biological sound measurement device 100C performs the processing from step S2 to step S5.
  • step S5 determines whether the control part 4 of the biological sound measuring device 100C is YES. If determination of step S5 is YES, the control part 4 of the biological sound measuring device 100C notifies a user by displaying on the display part 6 that the detection of wheezing is possible (step). S6a).
  • step S5 When the determination in step S5 is NO, the control unit 4 of the biological sound measurement device 100C notifies the user by displaying on the display unit 6 that wheezing cannot be detected (step S7a). .
  • a speaker may be mounted on the biological sound measurement device 100C, and in step S7a, it may be notified by outputting from the speaker that wheezing cannot be detected.
  • the biological sound measuring device 100C and an electronic device such as a smartphone are configured to be communicable, and a message indicating that wheezing cannot be detected is transmitted from the control unit 4 to the electronic device, and the display or speaker of the electronic device is used. Message display and voice output.
  • an LED is mounted instead of the display unit 6 of the biological sound measuring device 100C, and when the control unit 4 determines that the above relationship does not satisfy the above condition, the LED is caused to emit red light, for example. Thus, the user may be notified that the measurement accuracy is not ensured.
  • step S11 when the surrounding sound is low (step S11: YES), a test sound is generated from the sound generation unit 8. For this reason, it is possible to prevent the calculation accuracy of the measurement sensitivity from being lowered by sounds around the biological sound measurement device 100C other than the test sound, and the determination in step S5 of FIG. 10 can be performed with high accuracy.
  • the storage case 10 and the cover member 12A as described above are not necessary. For this reason, the manufacturing cost of an apparatus can be reduced.
  • step S11 in FIG. 10 is not essential if it is assumed that the inspection mode is set in a state where the biological sound measurement device 100C is in a silent environment.
  • the first sound measuring device M1 is used for measuring lung sounds as biological sounds, but may be used for measuring heart sounds as biological sounds, for example.
  • the housing cover 32 of the measurement unit 3 or the measurement unit 3A is not essential and may be omitted.
  • Body sound measuring device 1 1A, 1B Body portion 1b Grasping portion 1a Head portion 2 Housing 3, 3A Measuring unit 3a Pressure receiving portion 4 Control portion 5 Battery 6 Display portion 7 Terminal group 8 Sounding portion S Body surface Hand 31 First housing 31h Opening SP1 receiving space 32 Housing cover 34 Second housing 34h Opening SP2 receiving space 35 Contact sensor M1 First sound measuring device M2 Second sound measuring device 10, 10A Storage case 11 Base 12 Lid 12A Cover member 13 Display 14 Recess 15 Terminal group 16 Contact sensor

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PCT/JP2019/015680 2018-04-18 2019-04-10 生体音測定装置、生体音測定装置の作動方法、生体音測定装置の作動プログラム Ceased WO2019203098A1 (ja)

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CN201980026018.XA CN112004476A (zh) 2018-04-18 2019-04-10 生物声音测定装置及其动作方法和动作程序
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