WO2018124783A1 - Device and method for determining pressure in chamber, for high pressure oxygen treatment - Google Patents

Device and method for determining pressure in chamber, for high pressure oxygen treatment Download PDF

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Publication number
WO2018124783A1
WO2018124783A1 PCT/KR2017/015671 KR2017015671W WO2018124783A1 WO 2018124783 A1 WO2018124783 A1 WO 2018124783A1 KR 2017015671 W KR2017015671 W KR 2017015671W WO 2018124783 A1 WO2018124783 A1 WO 2018124783A1
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WO
WIPO (PCT)
Prior art keywords
pressure
admittance
eardrum
chamber
user
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PCT/KR2017/015671
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French (fr)
Korean (ko)
Inventor
신태민
송문
전세훈
김현성
남윤찬
신수연
장유림
윤석호
박종준
Original Assignee
연세대학교 원주산학협력단
(주)아이벡스메디칼시스템즈
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Publication of WO2018124783A1 publication Critical patent/WO2018124783A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G10/00—Treatment rooms or enclosures for medical purposes
    • A61G10/02—Treatment rooms or enclosures for medical purposes with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms
    • A61G10/023—Rooms for the treatment of patients at over- or under-pressure or at a variable pressure
    • A61G10/026—Rooms for the treatment of patients at over- or under-pressure or at a variable pressure for hyperbaric oxygen therapy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor means
    • A61G2203/32—General characteristics of devices characterised by sensor means for force

Definitions

  • the present invention relates to an apparatus and a method for determining the pressure in the chamber, and more particularly to a method for determining the pressure that is not overlying the patient's eardrum in an environment where the pressure fluctuates.
  • the tympanic membrane is a thin, transparent silver-white membrane with a thickness of about 0.1 mm and consists of three layers.
  • the tympanic membrane is located at the boundary between the outer ear and the middle ear, and its overall shape is conical, with the pointed tip of the cone pointing toward the inside of the middle ear, which can act as a diaphragm that vibrates the sound waves transmitted through the ear canal.
  • hyperbaric oxygen treatment is a treatment performed by administering oxygen in a closed oxygen chamber at a high pressure of 1 atm or more for a predetermined time, and is generally used for decompression and arterial air embolism of divers, and is also used to treat carbon monoxide.
  • the closed oxygen chamber for hyperbaric oxygen treatment is referred to as a hyperbaric oxygen treatment device or a hyperbaric oxygen chamber.
  • Tympanometry is performed to check the motility and condition of the tympanic membrane.
  • the tympanic state of the patient cannot be identified. Therefore, a method for measuring the tympanic condition of the patient during hyperbaric oxygen treatment is required.
  • An object of the present invention is to provide a device for predicting a tympanic condition of a patient and determining a pressurizable pressure in a high pressure environment in which pressure is constantly changing.
  • an embodiment of the present invention is a device for determining the pressure of the chamber, a speaker for outputting sound of a predetermined frequency band directed to the eardrum of the user inside the chamber, the eardrum of the user Determines the pressure in the chamber based on a microphone for receiving the reflected wave from the microphone, a measuring unit for measuring the admittance in the eardrum, and the measured admittance based on the magnitude of the output sound and the magnitude of the component corresponding to the sound in the reflected wave. It can be provided an apparatus comprising a pressure determining unit to.
  • a device characterized in that it further comprises a tympanum state information generating unit for generating the user's tympanum state information based on the measured admittance and the determined pressure.
  • the tympanum state information includes at least one or more of the degree of warpage of the tympanic membrane, whether the tympanic membrane is currently in a steady state, a pressure range corresponding to the current state of the tympanic membrane, and a degree of danger. Can provide.
  • the tympanic state information generating unit generates the tympanic state information as the normal state of the eardrum when the measured admittance is the maximum admittance, and when the measured admittance is the minimum admittance, the inside and outside of the tympanic membrane.
  • the pressure difference in the E is out of a preset range, it is possible to provide a device characterized in that the state of the tympanic membrane to generate a state of the tympanic state is dangerous.
  • the measurement unit may measure the second admittance corresponding to the determined pressure
  • the pressure determiner may provide an apparatus, characterized in that for updating the pressure based on the admittance and the second admittance.
  • the measurement unit measures the second admittance in the tympanic membrane while the pressure in the chamber is pressurized based on the determined pressure, the pressure determining unit is measured when the measured second admittance has a maximum value, It is possible to provide a device characterized in that the pressure is updated by adding the pressure corresponding to the second admittance to the pressure corresponding to the admittance.
  • a device characterized in that it further comprises a pressure regulator for adjusting the pressure in the chamber based on the determined pressure.
  • the pressure is a pressurized pressure that can be pressurized to the user
  • the pressure determiner determines the current pressure in the chamber as the pressurized pressure when the measured admittance is the maximum
  • the pressure adjuster is measured by the eardrum
  • a device further comprising a guide information generating unit for generating guide information for inducing the maximum admittance based on the measured admittance and the determined pressure.
  • the pressure determiner is based on the control command received from the external device located outside in response to the transmitted admittance It is possible to provide an apparatus characterized by determining.
  • a speaker for directing the sound of a predetermined frequency band to the user's eardrum inside the chamber, a microphone for receiving the reflected wave reflected from the eardrum of the user, the output
  • a measurement unit for measuring the admittance in the user's eardrum based on the magnitude of the measured sound and the component corresponding to the sound among the reflected waves
  • a pressure determination unit for determining the pressure in the chamber, the measured admittance and the determined pressure
  • the apparatus may include a tympanum state information generating unit for generating tympanic state information.
  • the method for determining the pressure of the chamber to direct the sound of a predetermined frequency band to the user's eardrum inside the chamber receiving the reflected wave reflected from the user's eardrum, Measuring the admittance in the eardrum of the user based on the magnitude of the sound and the magnitude of the component corresponding to the sound in the reflected wave, and determining the pressure in the chamber based on the measured admittance can do.
  • the patient's eardrum can be predicted even when the volume of the ear canal changes due to the movement of the patient during the time from the pressure change point to the start point of maintaining the pressure equilibrium.
  • the difference between the pressure and the pressure inside the body can prevent barotrauma to the patient's eardrum.
  • FIG. 1 is a diagram illustrating an overall system including an apparatus for determining the pressure of a chamber according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of an apparatus according to an embodiment of the present invention.
  • FIG. 3 is a diagram illustrating a process of measuring admittance and determining pressure in a tympanic membrane in accordance with an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a process of extracting a component corresponding to sound from reflected waves according to an embodiment of the present invention.
  • 5A to 5C are views illustrating a process of determining the pressure in a chamber according to an embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating a method of determining the pressure of a chamber according to an embodiment of the present invention.
  • the apparatus may include a pressure determining device 10 and an external device 20 including a computer device, a mobile phone, and the like, connected to the pressure determining device 10 through a network 30.
  • the network 30 refers to a connection structure capable of exchanging information between nodes such as terminals and servers, and may include wireless communication and wired communication.
  • the wireless communication may use at least one of, for example, LTE, LTE-A, CDMA, WCDMA, UMTS, WiBro, or GSM as a cellular communication protocol.
  • the wireless communication may include, for example, short-range communication.
  • the short range communication may include, for example, at least one of Wi-Fi, Bluetooth, Zigbee, RF (Radio Frequancy) communication, near field communication (NFC), global positioning system (GPS), and the like. .
  • the wired communication may include, for example, at least one of a universal serial bus (USB), a high definition multimedia interface (HDMI), a reduced standard 232 (RS-232), a plain old telephone service (POTS), and the like.
  • the network 300 may include a telecommunications network, for example, at least one of a computer network (eg, LAN or WAN), the Internet, or a telephone network.
  • the external device 20 is a terminal that can receive or store card information on an electronic card, and is a smartphone, a tablet personal computer, a mobile phone, a video phone, an e-book.
  • E-book readers desktop PCs, laptop PCs, netbook computers, workstations, servers, personal digital assistants, portable multimedia players (PMPs) , MP3 player, mobile medical device, camera, or wearable device (e.g. smart glasses, headmounted-device (HMD)), electronic clothing, electronic bracelets, electronic necklaces, electronic accessories ), An electronic tattoo, a smart mirror, or a smart watch), and may include a separate control device that can control the pressure determining device 10 from the outside, but is not limited thereto. It is not.
  • the pressure determination device 10 outputs a sound of a predetermined frequency band directed to the user's eardrum inside the chamber, receives the reflected wave reflected from the user's eardrum, and outputs the sound from the user's eardrum based on the output sound and the magnitude of the reflected wave. By measuring the admittance of, the pressure in the chamber can be determined.
  • the pressure determining device 10 has an entrance on the side, and can partition the inside of the device 10 so as to separate the device 10 into one or more sealed spaces, and can be separated into one or more airtight spaces in the diaphragm. have.
  • the pressure determining device 10 may include an oxygen supply device installed in one or more sealed spaces to supply high pressure oxygen, and may further include a power supply device supplying power to the oxygen supply device. .
  • the pressure determining device 10 may predict the pressure equilibrium state by measuring the volume of the ear canal of the patient in a high pressure environment and analyzing the admittance of the tympanic membrane for a user or a patient in the chamber based on the basic theory of tympanic mobility test. The pressure to reach pressure equilibrium can be determined.
  • the tympanic motility test is an acoustic emission measurement and a test for measuring the sound absorption rate of the tympanic membrane.
  • the difference between the internal pressure and the external pressure can be estimated based on the eardrum based on the test result and the internal pressure of the chamber.
  • the state where the admittance is maximum may mean that the internal pressure and the external pressure are the same as the eardrum has the maximum absorption rate.
  • the air is blown through the eustachian tube to secure the compressed air volume in the middle ear, thereby obtaining the compressed air volume in the middle ear, thereby achieving pressure equalization of the middle ear.
  • the eardrum When the pressure in the pressure determining device 10 is pressurized, the eardrum may be recessed toward the middle ear cavity, and when the pressure is reduced, the eardrum may expand in the ear canal direction.
  • the pressure determining device 10 may include a speaker 101, a microphone 102, a measuring unit 103, and a pressure determining unit 104.
  • the configuration of the pressure determining device 10 is not limited to those disclosed above.
  • the pressure determining device 10 may further include a tympanic state information generating unit 105, a pressure adjusting unit 106, a guide information generating unit (not shown), and a communication unit (not shown).
  • the speaker 101 may direct sound of a predetermined frequency band to the eardrum of the user inside the chamber and output the sound.
  • the speaker 101 may direct and output a single sound of 220 Hz to 230 Hz toward the eardrum.
  • the speaker 101 may generate a single sound of 226 Hz directed toward the eardrum of the user in the chamber through a digital to analog converter (DAC).
  • DAC digital to analog converter
  • the sound transmitted from the speaker 101 may have various features. As a characteristic irrespective of the frequency of the sound transmitted from the speaker 101, there may be friction generated by the friction between the isogol connecting part, the force of the air particles striking the middle ear structure, the mechanical shape of the cochlea tube, and the like. As a characteristic related to the frequency of the sound transmitted from the speaker 101, there are rigidity, elasticity, and the like, which correlate with flexibility, such as a tympanic membrane and isogol.
  • the microphone 102 may receive the reflected wave reflected from the eardrum of the user. As an example, the microphone 102 may receive the reflected wave returned by the reflected eardrum by the pressure.
  • the measurement unit 103 may measure an admittance in the eardrum of the user based on the magnitude of the output sound and the magnitude of a component corresponding to the sound among the reflected waves. At this time, the measurement unit 103 passes the received reflected wave through a filter having a predetermined frequency pass band, removes noise included in the received reflected wave by Fourier fast transform (FFT), and removes a component corresponding to sound from the reflected wave. It can be measured. For example, the measuring unit 103 may perform an analog to digital converter (ADC) on the reflected wave received through the microphone 102 at a sampling rate of 7.232 kHz.
  • ADC analog to digital converter
  • the sampling rate is generally 452Hz according to the Nyquist theory, which can be reproduced completely without loss of information in the sampling process with proper sampling interval of limited band frequency, but only 226Hz component is extracted through Fourier fast conversion.
  • the measurement unit 103 may take a 2nd order IIR peak filter having a passband of 226Hz to remove noise except for the signal of the 226Hz band, and then apply the Fourier fast transform to the filtered signal to receive the microphone 102.
  • the component corresponding to the sound output through the speaker 101 among the reflected waves can be measured.
  • the measurement unit 103 When the measurement unit 103 measures the admittance of the eardrum using sound in the 226 Hz band at the entrance to the ear canal, the measurement unit 103 may include both the volume of the ear canal and the admittance information of the eardrum, and the measurement unit 103 may be measured by the user's eardrum. In measuring the admittance at, it may be measured using the maximum value of the sound in the 226 Hz band generated through the speaker 101 and the maximum value of the component corresponding to the sound among the reflected waves.
  • the total admittance TA (Total Admittance) including the volume and admittance of the ear canal can be obtained through a speaker and a microphone as shown in Equation 1 above.
  • the human middle ear has a phase difference of approximately 90 degrees between the sound output from the speaker 101 and the reflected wave received from the microphone 102 at 226 Hz, and the real value converges to zero. Therefore, the admittance Y is matched 1: 1 with the acoustic susceptance B and can be expressed by Equation 2 below.
  • the total admittance that can be measured through the microphone 101 and the speaker 102 may be expressed as the sum of the ear canal volume (ECV) and the admittance of the tympanic membrane (TMA: Tympanic Membrane Admittance).
  • ECV ear canal volume
  • TMA Tympanic Membrane Admittance
  • the eardrum expands to the maximum and loses the ability to absorb sound.
  • the admittance of the eardrum converges to zero, so there is no pressure difference between the inside and outside of the eardrum. If the tympanic membrane's admittance has a maximum value, it can be said that the tympanic membrane is at pressure equilibrium.
  • the admittance of the tympanic membrane becomes zero and the total admittance measured at this time may represent only the ear canal volume.
  • the ear canal volume can be expressed as in Equation 3. Where p is the air density, c is the speed of sound waves, f is the frequency of sound, and v is the volume of enclosure. If the atmospheric pressure and temperature is 20 degrees, and using a frequency of 226 hz, the ear canal volume can be obtained as shown in Equation 4 below.
  • the measurement unit 103 may measure the admittance in the eardrum of the user based on the magnitude of the output sound and the magnitude of a component corresponding to the sound among the reflected waves.
  • the measurement unit 103 may estimate the middle ear pressure based on the eardrum of the user using an admittance of the eardrum and an external pressure such as a chamber pressure applied to the outside based on the eardrum, thereby measuring the pressure difference.
  • You may.
  • the measured pressure difference exceeds 800 daPa, early symptoms of barotrauma such as pain may occur, and when reaching 1200 daPa, it is impossible to open and close the eustachian tube by the patient's own effort, Pressure equalization of the internal pressure will not be achieved. If this pressure continues to increase, physical damage such as severe pain, rupture, perforation, or hearing loss can occur.
  • the pressure determiner 104 may determine the pressure in the chamber based on the measured admittance. Taking the operation of the pressure determiner 104 as an example through FIG. 3, FIG. 3 is a diagram illustrating a process of measuring admittance in the eardrum and determining a pressure according to an embodiment of the present invention.
  • the user may enter the chamber and pressurize the chamber pressure 302 at 200 daPa based on the atmospheric pressure (S301).
  • the measurement unit 103 measures that the admittance 301 of the tympanic membrane gradually converges to zero, and then induces pressure equilibrium through the user's effort. This gradually increases to reach a pressure equilibrium state S302 where the internal pressure 303 and the external pressure 302 are equal, and at this time, the measurement unit 103 can measure the maximum value of the admittance of the tympanic membrane.
  • the chamber pressure 303 is pressurized at 200 daPa (S303), the pressure becomes unbalanced, and the admittance of the eardrum converges to zero again.
  • the chamber pressure 303 is reduced to 400 daPa (S304)
  • the external pressure 302 becomes As it decreases, the pressure equilibrium gradually increases, and the tympanic admittance becomes the maximum value.
  • the chamber pressure 302 becomes lower than the internal pressure 303 as the decompression continues, the pressure becomes unbalanced again and the admittance of the tympanic membrane becomes zero. Converges to. That is, it can be estimated that the pressure is in equilibrium when the difference 304 between the chamber pressure 302 and the internal pressure 303 is zero, or when the admittance of the tympanic membrane reaches a maximum value.
  • the measurement unit 103 may continuously measure the admittance of the user's eardrum to determine whether the user is currently in an equilibrium state, and the pressure determination unit 104 ) May determine the current pressure at the time when the user's admittance becomes the maximum value as the pressurized pressure that can be pressed to the user in the chamber.
  • the admittance 301 measured by the measuring unit 103 gradually hunts to zero, and according to the user's effort, the internal pressure 303 increases.
  • the admittance 301 measured by the measuring unit 103 has a maximum value.
  • the pressure determiner 104 may determine the maximum value of the admittance 301 as a pressurized pressure capable of pressing 200 daPa, which is the pressure at the time point, to the user.
  • the pressure balance means that the external pressure in the tympanic membrane is the same, and the admittance measured by the measuring unit 103 may have a maximum value when the external pressure in the tympanic membrane is the same. Therefore, the pressure balance, the maximum admittance and the maximum value of the admittance can be used interchangeably, and the pressure determination unit 104 can determine the pressure at the time when the pressure equilibrium is achieved as the pressure in the chamber, and the determined pressure can be pressurized to the user. May be pressurized pressure.
  • the elastic force of the tympanic membrane indicates the ability to absorb sound. At the point where the admittance converges to zero, the elastic force is the lowest and the sound absorption of the tympanic membrane is low. At this time, the tympanic membrane is tense and the reflection is increased, and the ear is bruised due to the pressure difference between the inside and the outside of the middle ear, and the sound is hard to be heard.
  • the elastic force of the eardrum is the highest at the point where the admittance is maximum, and the sound absorption of the eardrum is high. This is the best environment for transmitting sound energy, and the eardrum loosens, resulting in less reflection and increased absorption. This is when the external auditory meatus and middle ear pressure are equal, and the internal pressure and external pressure are the same point of time with respect to the eardrum.
  • the measuring unit 103 measures the admittance in the user's eardrum based on the magnitude of the output sound and the magnitude of the component corresponding to the sound among the reflected waves, and the pressure determining unit 104 measures the pressure in the chamber based on the measured admittance. Can be determined.
  • the pressure is a pressure that can be pressurized to the user, it means a pressure that can reach the pressure equilibrium by the user without generating a trauma directly to the user's eardrum because it is pressurizable pressure.
  • the tympanic state information generating unit 105 may generate the tympanic state information of the user based on the measured admittance and the determined pressure.
  • the tympanic condition information may include, but is not limited to, information about the flexural information of the tympanic membrane, whether the tympanic membrane is currently in a normal state, the pressure range corresponding to the current state of the tympanic membrane, the degree of danger, the level of danger, and whether the pressure is in equilibrium It may further include various information related to the condition of the tympanic membrane.
  • the tympanic state information generating unit 105 determines that the state of the tympanic membrane is in a normal state and generates a tympanic state information, and measures the measuring unit ( If the admittance measured at 103 is the minimum admittance converged to zero, the pressure is in an unbalanced state, and the eardrum state information may be generated by determining that the current state of the eardrum is a dangerous state.
  • the measurement unit 103 may measure the second admittance corresponding to the determined pressure, but the pressure determiner 104 may update the pressure based on the admittance and the second admittance.
  • the measuring unit 103 measures the second admittance in the middle ear film while the pressure in the chamber is pressurized based on the determined pressure, but the pressure determining unit 104 measures the admittance measured when the measured second admittance has the maximum value.
  • the pressure may be updated by adding a pressure corresponding to the second admittance to a pressure corresponding to.
  • the pressure regulator 106 may adjust the pressure in the chamber based on the determined pressure.
  • the pressure determiner 104 may determine the current pressure in the chamber as the pressurized pressure, and when the measured admittance is the minimum, the eardrum state information generator ( 105 may generate the eardrum state information indicating that the user's eardrum state is dangerous, and the pressure controller 106 may reduce the pressure in consideration of the user's eardrum state when the measured admittance is minimum.
  • FIGS. 5A to 5C are views illustrating a process of determining the pressure in a chamber according to an embodiment of the present invention.
  • the embodiments described with reference to FIGS. 5A to 5C illustrate only one example for aiding an understanding of various embodiments of the present disclosure, and the present invention is not limited to the description of FIGS. 5A to 5C. It is apparent that various other embodiments may exist.
  • the pressure determining device 10 may pressurize to continuously monitor the eardrum state of the patient.
  • the pressurization range can be selected according to the chamber pressure pressurization limit point and the barotrauma generation point according to the pressure difference on the basis of the pressure equilibrium time point, and the measuring unit 103 pressurizes a predetermined range of pressure from the pressure equilibrium point of time. By continuously measuring the admittance, the presence or absence of pressure equilibrium can be confirmed.
  • the pressure determiner 104 may update the pressurizable pressure.
  • the initial pressurizable pressure was 800 daPa
  • the internal pressure 303 of the patient increased when the pressure became 600 daPa during the pressurization of the chamber pressure 302 through the pressure adjusting unit 106, so that the pressure difference 304 became zero.
  • the pressure determining unit 104 updates the pressurized pressure at the time point at which the pressure can be observed to be updated to 1400 daPa ( S502).
  • the guidance information generation unit (not shown) for generating guidance information for inducing the maximum admittance based on the measured admittance and the determined pressure is guided to guide the patient to balance the pressure through the guidance information for a predetermined time In the case of waiting (S503), and if the pressure balance is made within a predetermined time, it is possible to continue the pressurization after updating the pressable pressure (S504).
  • the generated guide information may be voice guidance and may be generated through various methods such as an image and an image.
  • the chamber internal pressure 302 may be reduced.
  • the measurement unit 103 may know that the pressure difference 304 is about 200 daPa when the admittance of the tympanic membrane increases when the pressure inside the chamber is decompressed, and the pressure equilibrium is performed when the pressure difference 304 becomes zero. It can be measured.
  • the measuring unit 103 continuously measures the admittance 301 in the tympanic membrane, and the pressure determined by the pressure determining unit 104 is 800 daPa, and the chamber pressure (
  • the pressure determining unit measures the maximum admittance in the measuring unit 103 at 800 daPa which is a predetermined pressure.
  • the pressure in the chamber can be determined as 1400 daPa plus 600 daPa at. In this case, the pressure may be a pressurizable pressure pressurizable to the user.
  • the pressure determining unit 104 may determine the pressure in the chamber and measure while the pressure in the chamber changes.
  • the pressure determiner 104 may update the predetermined pressure.
  • the present invention may further include a communication unit (not shown) for transmitting the measured admittance to an external device located outside
  • the pressure determiner 104 is a control received from the external device in response to the transmitted admittance
  • the pressure can be determined based on the command.
  • the communication unit may transmit the admittance measured by the measuring unit 103 to a computer located outside, and the pressure determiner 104 may determine the pressure based on a control command received from the computer located outside.
  • the pressure adjusting unit 106 may adjust the pressure based on the control command received from the computer.
  • the device 10 for determining the pressure can be applied only when there is no abnormality in the audiometer, and when the stiffness of the osseous bone is increased, the As-type tympanic motion having a small difference between the conduction degree at atmospheric pressure and the conduction degree under pressure is obtained.
  • the pressure determining device 10 includes a speaker for directing and outputting sound of a predetermined frequency band to the eardrum, a microphone for receiving the reflected wave reflected from the eardrum of the user, the magnitude of the output sound and Generates the eardrum status information of the user based on the measurement unit for measuring the admittance in the eardrum of the user based on the magnitude of the component corresponding to the sound of the reflected wave, the pressure determination unit for determining the pressure in the chamber and the measured admittance and the determined pressure
  • the eardrum state information generating unit may be included.
  • FIG. 4 is a diagram illustrating a process of extracting a component corresponding to a sound from reflected waves according to an embodiment of the present invention.
  • a predetermined frequency band is passed through a speaker in step S402.
  • the sound having the direction can be directed to the eardrum, and in step S403, the reflected wave reflected from the eardrum of the user can be received through the microphone.
  • the sound signal is sampled using the reflected wave received in step S404 in a predetermined frequency band, and in step S405, a 2nd order IIR filter is taken to detect a signal corresponding to the sound among the reflected waves.
  • a Fourier fast transform may be performed to detect a signal corresponding to the sound in the reflected wave, and the admittance may be measured based on the magnitude of the sound output in step S407 and the magnitude of the component corresponding to the sound in the reflected wave. Thereafter, the admittance information measured in step S408 may be transmitted to the external device.
  • the process of extracting a component corresponding to the sound from the reflected wave described in FIG. 4 is only one of various embodiments of the present disclosure, and is not limited thereto.
  • FIG. 6 is a flowchart illustrating a method of determining the pressure of a chamber according to an embodiment of the present invention.
  • the method of determining the pressure of the chamber according to FIG. 6 describes the contents processed in each part of the pressure determining device 10 described with reference to FIGS. 1 to 5. Therefore, even if not described below, the detailed description is omitted because it can be included or inferred in the operation description of the pressure determining device described with reference to FIGS.
  • the pressure determination apparatus 10 outputs sound of a predetermined frequency band to a user's eardrum inside the chamber, and receives a reflected wave reflected from the user's eardrum in step S602.
  • the admittance in the tympanic membrane is measured based on the magnitude of the sound output in step S603 and the magnitude of the component corresponding to the sound in the reflected wave, and the pressure in the chamber can be determined based on the admittance measured in step S604.

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Abstract

A device for determining a pressure in a chamber comprises: a speaker for directing and outputting a sound of a predetermined frequency band to an eardrum of a user inside a chamber; a microphone for receiving a reflected wave reflected from a user's eardrum; a measurement unit for measuring admittance of a user's eardrum on the basis of the size of an output sound and the size of a component corresponding to a sound in a reflected wave; and a pressure determination unit for determining a pressure in a chamber on the basis of measured admittance.

Description

고압산소 치료를 위한 챔버 내 압력을 결정하는 장치 및 방법Apparatus and method for determining pressure in a chamber for hyperbaric oxygen treatment
본원은 챔버 내의 압력을 결정하는 장치 및 그 방법에 관한 것으로 보다 상세하게는 압력이 변동하는 환경에서 환자의 고막에 무리가 되지 않는 압력을 결정하는 방법에 관한 것이다.The present invention relates to an apparatus and a method for determining the pressure in the chamber, and more particularly to a method for determining the pressure that is not overlying the patient's eardrum in an environment where the pressure fluctuates.
고막은 두께 0.1mm 정도의 얇고 투명한 은백색의 막으로서, 세 겹으로 이루어져 있다. 고막은 외이(外耳)와 중이(中耳)의 경계에 위치하고, 전체적인 모양은 원추형으로서 뾰족한 원추 끝이 중이의 안쪽으로 향해있으며, 외이도를 통해 전달된 음파를 진동시키는 진동판의 역할을 할 수 있다. The tympanic membrane is a thin, transparent silver-white membrane with a thickness of about 0.1 mm and consists of three layers. The tympanic membrane is located at the boundary between the outer ear and the middle ear, and its overall shape is conical, with the pointed tip of the cone pointing toward the inside of the middle ear, which can act as a diaphragm that vibrates the sound waves transmitted through the ear canal.
한편, 고압산소 치료는 1기압 이상의 고압인 밀폐된 산소실에서 일정 시간 동안 산소를 투여하여 시행되는 치료로써, 일반적으로 다이버들의 감압증과 동맥 공기 색전증에 가장 많이 사용되고 있으며, 일산화탄소 치료에 사용되기도 한다. 이 때, 고압산소 치료를 위한 밀폐된 산소실을 고압산소 치료기 또는 고압산소 챔버라고 한다. On the other hand, hyperbaric oxygen treatment is a treatment performed by administering oxygen in a closed oxygen chamber at a high pressure of 1 atm or more for a predetermined time, and is generally used for decompression and arterial air embolism of divers, and is also used to treat carbon monoxide. . At this time, the closed oxygen chamber for hyperbaric oxygen treatment is referred to as a hyperbaric oxygen treatment device or a hyperbaric oxygen chamber.
하지만, 고압산소 치료 시, 챔버에 의해 기압이 변화하는 경우 인체 기압 조절 기능이 기압의 변화를 따라가지 못해 고막의 팽창이 발생하게 되고, 챔버에 의해 외이에 가해지는 압력과 중이 압력간의 차이로 인해 압력 평형이 깨지게 되는 경우, 고막이 파열되거나 천공 등 여러 가지 손상이 발생할 수 있다. However, in the case of hyperbaric oxygen treatment, when the air pressure is changed by the chamber, the pressure control function of the human body cannot follow the change of air pressure, causing the expansion of the tympanic membrane, and due to the difference between the pressure applied to the outer ear by the chamber and the middle ear pressure. If the pressure equilibrium is broken, various damages such as tearing of the eardrum or perforation can occur.
고막의 운동성 및 상태를 확인하기 위해 고막운동성 검사(Tympanometry)를 수행하고 있으나 고압산소치료 중에는 환자의 고막 상태를 파악할 수 없는 단점이 있다. 이에 고압산소 치료 시 환자의 고막상태를 측정하기 위한 방법이 요구된다. Tympanometry is performed to check the motility and condition of the tympanic membrane. However, during hyperbaric oxygen therapy, the tympanic state of the patient cannot be identified. Therefore, a method for measuring the tympanic condition of the patient during hyperbaric oxygen treatment is required.
본원의 배경이 되는 기술은 한국특허공개공보 제2011-0047309호에 개시되어 있다.Background art of the present application is disclosed in Korea Patent Publication No. 2011-0047309.
본원은 전술한 종래 기술의 문제점을 해결하기 위한 것으로서, 지속적으로 압력이 변화하는 고압 환경에서 환자의 고막 상태를 예측하고, 가압 가능한 압력을 결정하는 장치를 제공하는 것을 목적으로 한다. An object of the present invention is to provide a device for predicting a tympanic condition of a patient and determining a pressurizable pressure in a high pressure environment in which pressure is constantly changing.
또한, 압력 변화 시점부터 환자의 압력 평형 유지 시작 지점까지의 긴 시간 동안 환자의 움직임에 의해 외이도의 용적이 변하는 경우에도 환자의 고막 상태를 예측하고, 가압 가능한 압력을 결정하는 장치를 제공하는 것을 목적으로 한다. It is also an object of the present invention to provide a device for predicting the condition of the tympanic membrane of the patient and determining the pressurized pressure even when the volume of the ear canal changes due to the movement of the patient for a long time from the time of the pressure change to the start point of maintaining the pressure equilibrium of the patient. It is done.
다만, 본원의 실시예가 이루고자 하는 기술적 과제는 상기된 바와 같은 기술적 과제들도 한정되지 않으며, 또 다른 기술적 과제들이 존재할 수 있다.However, the technical problem to be achieved by the embodiments of the present application is not limited to the technical problems as described above, and other technical problems may exist.
상기한 기술적 과제를 달성하기 위한 기술적 수단으로서, 본원의 일 실시예는 챔버의 압력을 결정하는 장치에 있어서, 소정 주파수 대역의 사운드를 챔버 내부의 사용자의 고막에 지향하여 출력하는 스피커, 사용자의 고막에서 반사된 반사파를 수신하는 마이크, 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 사용자의 고막에서의 어드미턴스를 측정하는 측정부 및 측정된 어드미턴스에 기초하여 챔버 내의 압력을 결정하는 압력 결정부를 포함하는 것을 특징으로 하는 장치를 제공할 수 있다. As a technical means for achieving the above technical problem, an embodiment of the present invention is a device for determining the pressure of the chamber, a speaker for outputting sound of a predetermined frequency band directed to the eardrum of the user inside the chamber, the eardrum of the user Determines the pressure in the chamber based on a microphone for receiving the reflected wave from the microphone, a measuring unit for measuring the admittance in the eardrum, and the measured admittance based on the magnitude of the output sound and the magnitude of the component corresponding to the sound in the reflected wave. It can be provided an apparatus comprising a pressure determining unit to.
또한 본원의 일 실시예에 따르면 측정된 어드미턴스 및 결정된 압력에 기초하여 사용자의 고막 상태 정보를 생성하는 고막 상태 정보 생성부를 더 포함하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to an embodiment of the present application may provide a device characterized in that it further comprises a tympanum state information generating unit for generating the user's tympanum state information based on the measured admittance and the determined pressure.
또한 본원의 일 실시예에 따르면 고막 상태 정보는 고막의 휨 정도, 고막이 현재 정상 상태인지 여부, 고막의 현재 상태에 대응하는 압력의 범위, 위험 정도 중 적어도 하나 이상을 포함하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to one embodiment of the present application, the tympanum state information includes at least one or more of the degree of warpage of the tympanic membrane, whether the tympanic membrane is currently in a steady state, a pressure range corresponding to the current state of the tympanic membrane, and a degree of danger. Can provide.
또한 본원의 일 실시예에 따르면 고막 상태 정보 생성부는 측정된 어드미턴스가 최대 어드미턴스인 경우, 고막의 상태를 정상 상태인 것으로 고막 상태 정보를 생성하고, 측정된 어드미턴스가 최소 어드미턴스인 경우 상기 고막 내부와 외부에서의 압력 차가 기 설정 기 설정된 범위를 벗어나는 경우, 고막의 상태가 위험한 상태인 것으로 고막 상태 정보를 생성하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to an embodiment of the present application, the tympanic state information generating unit generates the tympanic state information as the normal state of the eardrum when the measured admittance is the maximum admittance, and when the measured admittance is the minimum admittance, the inside and outside of the tympanic membrane. When the pressure difference in the E is out of a preset range, it is possible to provide a device characterized in that the state of the tympanic membrane to generate a state of the tympanic state is dangerous.
또한 본원의 일 실시예에 따르면 측정부는 결정된 압력에 대응하는 제 2 어드미턴스를 측정하되, 압력 결정부는 어드미턴스 및 제 2 어드미턴스에 기초하여 압력을 갱신하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to an embodiment of the present application, the measurement unit may measure the second admittance corresponding to the determined pressure, the pressure determiner may provide an apparatus, characterized in that for updating the pressure based on the admittance and the second admittance.
또한 본원의 일 실시예에 따르면 측정부는 결정된 압력에 기초하여 챔버 내 압력이 가압되는 중, 고막에서의 제 2 어드미턴스를 측정하되, 압력 결정부는 측정된 제 2 어드미턴스가 최대값을 갖는 경우, 측정된 어드미턴스에 대응하는 압력에 제 2 어드미턴스에 대응하는 압력을 더하여 압력을 갱신하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to one embodiment of the present application, the measurement unit measures the second admittance in the tympanic membrane while the pressure in the chamber is pressurized based on the determined pressure, the pressure determining unit is measured when the measured second admittance has a maximum value, It is possible to provide a device characterized in that the pressure is updated by adding the pressure corresponding to the second admittance to the pressure corresponding to the admittance.
또한 본원의 일 실시예에 따르면 결정된 압력에 기초하여 챔버 내 압력을 조절하는 압력 조절부를 더 포함하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to an embodiment of the present application can provide a device characterized in that it further comprises a pressure regulator for adjusting the pressure in the chamber based on the determined pressure.
또한 본원의 일 실시예에 따르면 압력은 사용자에게 가압 가능한 가압 압력이되, 압력 결정부는 측정된 어드미턴스가 최대인 경우, 챔버 내의 현재 압력을 가압 압력으로 결정하고, 압력 조절부는 측정된 어드미턴스가 상기 고막 내부와 외부에서의 압력 차가 기 설정 기 설정된 범위를 벗어나는 경우, 챔버 내의 압력을 감압하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to one embodiment of the present application, the pressure is a pressurized pressure that can be pressurized to the user, the pressure determiner determines the current pressure in the chamber as the pressurized pressure when the measured admittance is the maximum, the pressure adjuster is measured by the eardrum When the pressure difference between the inside and outside the predetermined range, it is possible to provide a device characterized in that to reduce the pressure in the chamber.
또한 본원의 일 실시예에 따르면 측정된 어드미턴스 및 결정된 압력에 기초하여 어드미턴스가 최대가 되도록 유도하는 안내 정보를 생성하는 안내 정보 생성부를 더 포함하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to an embodiment of the present application may provide a device further comprising a guide information generating unit for generating guide information for inducing the maximum admittance based on the measured admittance and the determined pressure.
또한 본원의 일 실시예에 따르면 측정된 어드미턴스를 외부에 위치한 외부 장치로 전송하는 통신부를 더 포함하고, 압력 결정부는 전송된 어드미턴스에 대응하여 외부에 위치한 외부 장치로부터 수신된 제어 명령에 기초하여 압력을 결정하는 것을 특징으로 하는 장치를 제공할 수 있다. In addition, according to an embodiment of the present application further includes a communication unit for transmitting the measured admittance to an external device located outside, the pressure determiner is based on the control command received from the external device located outside in response to the transmitted admittance It is possible to provide an apparatus characterized by determining.
또한 본원의 일 실시예에 따르면 챔버의 압력을 결정하는 장치에 있어서, 소정 주파수 대역의 사운드를 챔버 내부의 사용자의 고막에 지향하여 출력하는 스피커, 사용자의 고막에서 반사된 반사파를 수신하는 마이크, 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 사용자의 고막에서의 어드미턴스를 측정하는 측정부, 챔버 내의 압력을 결정하는 압력 결정부, 측정된 어드미턴스 및 결정된 압력에 기초하여 사용자의 고막 상태 정보를 생성하는 고막 상태 정보 생성부를 포함하는 장치를 제공할 수 있다. In addition, according to an embodiment of the present invention in the apparatus for determining the pressure of the chamber, a speaker for directing the sound of a predetermined frequency band to the user's eardrum inside the chamber, a microphone for receiving the reflected wave reflected from the eardrum of the user, the output A measurement unit for measuring the admittance in the user's eardrum based on the magnitude of the measured sound and the component corresponding to the sound among the reflected waves, a pressure determination unit for determining the pressure in the chamber, the measured admittance and the determined pressure The apparatus may include a tympanum state information generating unit for generating tympanic state information.
또한 본원의 일 실시예에 따르면 챔버의 압력을 결정하는 방법에 있어서 소정 주파수 대역의 사운드를 챔버 내부의 사용자의 고막에 지향하여 출력하는 단계, 사용자의 고막에서 반사된 반사파를 수신하는 단계, 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 사용자의 고막에서의 어드미턴스를 측정하는 단계, 측정된 어드미턴스에 기초하여 챔버 내의 압력을 결정하는 단계를 포함하는 것을 특징으로 하는 방법을 제공할 수 있다. In addition, according to an embodiment of the present invention in the method for determining the pressure of the chamber to direct the sound of a predetermined frequency band to the user's eardrum inside the chamber, receiving the reflected wave reflected from the user's eardrum, Measuring the admittance in the eardrum of the user based on the magnitude of the sound and the magnitude of the component corresponding to the sound in the reflected wave, and determining the pressure in the chamber based on the measured admittance can do.
상술한 과제 해결 수단은 단지 예시적인 것으로서, 본원을 제한하려는 의도로 해석되지 않아야 한다. 상술한 예시적인 실시예 외에도, 도면 및 발명의 상세한 설명에 추가적인 실시예가 존재할 수 있다.The above-mentioned means for solving the problems are merely exemplary and should not be construed as limiting the present application. In addition to the above-described exemplary embodiments, additional embodiments may exist in the drawings and detailed description of the invention.
전술한 본원의 과제 해결 수단에 의하면, 지속적으로 압력이 변화하는 고압 환경에서 환자의 고막 상태의 예측이 가능하고, 이에 따라 환자에 가압 가능한 압력을 결정할 수 있다. According to the above-described problem solving means of the present application, it is possible to predict the condition of the tympanic patient of the patient in a high pressure environment in which the pressure is constantly changing, it is possible to determine the pressure that can be applied to the patient.
압력 변화 시점부터 환자의 압력 평형 유지 시작 지점까지의 시간 동안 환자의 움직임에 의해 외이도의 용적이 변하는 경우에도 환자의 고막 상태를 예측할 수 있고, 가압 가능한 압력을 결정함으로써 고압 산소치료 시 챔버에 의한 외부 압력과 신체 내부 압력 간의 차이에 따라 환자의 고막에 발생하는 바로트라우마를 방지할 수 있다.The patient's eardrum can be predicted even when the volume of the ear canal changes due to the movement of the patient during the time from the pressure change point to the start point of maintaining the pressure equilibrium. The difference between the pressure and the pressure inside the body can prevent barotrauma to the patient's eardrum.
도 1은 본원발명의 일 실시예에 따른 챔버의 압력을 결정하는 장치를 포함하는 전체 시스템을 나타내는 도면이다. 1 is a diagram illustrating an overall system including an apparatus for determining the pressure of a chamber according to an embodiment of the present invention.
도 2는 본원발명의 일 실시예에 따른 장치의 구성도이다. 2 is a block diagram of an apparatus according to an embodiment of the present invention.
도 3은 본원발명의 일 실시예에 따른 고막에서의 어드미턴스를 측정하고, 압력을 결정하는 과정을 나타내는 도면이다. 3 is a diagram illustrating a process of measuring admittance and determining pressure in a tympanic membrane in accordance with an embodiment of the present invention.
도 4는 본원발명의 일 실시예에 따른 반사파 중 사운드에 대응하는 성분을 추출하는 과정을 나타내는 도면이다.4 is a diagram illustrating a process of extracting a component corresponding to sound from reflected waves according to an embodiment of the present invention.
도 5a 내지 5c는 본원발명의 일 실시예에 따른 챔버 내 압력을 결정하는 과정을 나타내는 도면이다.5A to 5C are views illustrating a process of determining the pressure in a chamber according to an embodiment of the present invention.
도 6은 본원발명의 일 실시예에 따른 챔버의 압력을 결정하는 방법을 나타내는 흐름도이다.6 is a flowchart illustrating a method of determining the pressure of a chamber according to an embodiment of the present invention.
아래에서는 첨부한 도면을 참조하여 본원이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본원의 실시예를 상세히 설명한다. 그러나 본원은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다. 그리고 도면에서 본원을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 붙였다. DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present disclosure. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.
본원 명세서 전체에서, 어떤 부분이 다른 부분과 "연결"되어 있다고 할 때, 이는 "직접적으로 연결"되어 있는 경우뿐 아니라, 그 중간에 다른 소자를 사이에 두고 "전기적으로 연결"되어 있는 경우도 포함한다. Throughout this specification, when a portion is "connected" to another portion, this includes not only "directly connected" but also "electrically connected" with another element in between. do.
본원 명세서 전체에서, 어떤 부재가 다른 부재 "상에", "상부에", "상단에", "하에", "하부에", "하단에" 위치하고 있다고 할 때, 이는 어떤 부재가 다른 부재에 접해 있는 경우뿐 아니라 두 부재 사이에 또 다른 부재가 존재하는 경우도 포함한다. Throughout this specification, when a member is said to be located on another member "on", "upper", "top", "bottom", "bottom", "bottom", this means that any member This includes not only the contact but also the presence of another member between the two members.
본원 명세서 전체에서, 어떤 부분이 어떤 구성요소를 "포함" 한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성 요소를 더 포함할 수 있는 것을 의미한다. Throughout this specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding the other components unless specifically stated otherwise.
도 1은 본원발명의 일 실시예에 따른 챔버의 압력을 결정하는 장치를 포함하는 전체 시스템을 나타내는 도면이다. 도 1을 참조하면, 압력 결정 장치(10) 및 압력 결정 장치(10)와 네트워크(30)로 연결된 컴퓨터 장치, 핸드폰 등을 포함하는 외부 장치(20)를 포함한다. 1 is a diagram illustrating an overall system including an apparatus for determining the pressure of a chamber according to an embodiment of the present invention. Referring to FIG. 1, the apparatus may include a pressure determining device 10 and an external device 20 including a computer device, a mobile phone, and the like, connected to the pressure determining device 10 through a network 30.
네트워크(30)는 단말들 및 서버들과 같은 각각의 노드 상호 간에 정보 교환이 가능한 연결 구조를 의미하는 것으로, 무선 통신 및 유선 통신을 포함할 수 있다. 상기 무선 통신은, 예를 들면 셀룰러 통신 프로토콜로서, 예를 들면 LTE, LTE-A, CDMA, WCDMA, UMTS, WiBro, 또는 GSM 등 중 적어도 하나를 사용할 수 있다. 또한 상기 무선 통신은, 예를 들면, 근거리 통신을 포함할 수 있다. 상기 근거리 통신은, 예를 들면, Wi-Fi, Bluetooth, 지그비(Zigbee), RF(Radio Frequancy) 통신, NFC(near field communication), 또는 GPS(global positioning system) 등 중 적어도 하나를 포함할 수 있다. 상기 유선 통신은, 예를 들면, USB(universal serial bus), HDMI(high definition multimedia interface), RS-232(recommended standard 232), 또는 POTS(plain old telephone service) 등 중 적어도 하나를 포함할 수 있다. 네트워크(300)는 통신 네트워크(telecommunications network), 예를 들면, 컴퓨터 네트워크(computer network)(예: LAN 또는 WAN), 인터넷(Internet), 또는 전화망(telephone network) 중 적어도 하나를 포함할 수 있다. The network 30 refers to a connection structure capable of exchanging information between nodes such as terminals and servers, and may include wireless communication and wired communication. For example, the wireless communication may use at least one of, for example, LTE, LTE-A, CDMA, WCDMA, UMTS, WiBro, or GSM as a cellular communication protocol. In addition, the wireless communication may include, for example, short-range communication. The short range communication may include, for example, at least one of Wi-Fi, Bluetooth, Zigbee, RF (Radio Frequancy) communication, near field communication (NFC), global positioning system (GPS), and the like. . The wired communication may include, for example, at least one of a universal serial bus (USB), a high definition multimedia interface (HDMI), a reduced standard 232 (RS-232), a plain old telephone service (POTS), and the like. . The network 300 may include a telecommunications network, for example, at least one of a computer network (eg, LAN or WAN), the Internet, or a telephone network.
외부 장치(20)는 전자 카드에 대한 카드 정보를 수신하거나 또는 내부에 저장할 수 있는 단말로써, 스마트폰(smartphone), 태블릿 PC(tablet personal computer), 이동 전화기(mobile phone), 화상 전화기, 전자책 리더기(e-book reader), 데스크탑 PC (desktop PC), 랩탑 PC(laptop PC), 넷북 컴퓨터(netbook computer), 워크스테이션(workstation), 서버, PDA(personal digital assistant), PMP(portable multimedia player), MP3 플레이어, 모바일 의료기기, 카메라, 또는 웨어러블 장치(wearable device) (예: 스마트 안경, 머리 착용형 장치(headmounted-device(HMD)), 전자 의복, 전자 팔찌, 전자 목걸이, 전자 앱세서리(appcessory), 전자 문신, 스마트 미러, 또는 스마트 와치(smart watch))중 적어도 하나를 포함할 수 있고, 외부에서 압력 결정 장치(10)를 제어할 수 있는 별도의 제어 장치를 포함할 수 있으나 이에 한정되는 것은 아니다. The external device 20 is a terminal that can receive or store card information on an electronic card, and is a smartphone, a tablet personal computer, a mobile phone, a video phone, an e-book. E-book readers, desktop PCs, laptop PCs, netbook computers, workstations, servers, personal digital assistants, portable multimedia players (PMPs) , MP3 player, mobile medical device, camera, or wearable device (e.g. smart glasses, headmounted-device (HMD)), electronic clothing, electronic bracelets, electronic necklaces, electronic accessories ), An electronic tattoo, a smart mirror, or a smart watch), and may include a separate control device that can control the pressure determining device 10 from the outside, but is not limited thereto. It is not.
압력 결정 장치(10)는 소정 주파수 대역의 사운드를 챔버 내부의 사용자의 고막에 지향하여 출력하여, 사용자의 고막에서 반사된 반사파를 수신하고, 출력된 사운드 및 반사파의 크기에 기초하여 사용자의 고막에서의 어드미턴스를 측정하여, 챔버 내의 압력을 결정할 수 있다. The pressure determination device 10 outputs a sound of a predetermined frequency band directed to the user's eardrum inside the chamber, receives the reflected wave reflected from the user's eardrum, and outputs the sound from the user's eardrum based on the output sound and the magnitude of the reflected wave. By measuring the admittance of, the pressure in the chamber can be determined.
압력 결정 장치(10)는 측면에 출입구를 구비하고, 장치(10)를 밀폐된 하나 이상의 공간으로 분리할 수 있도록 장치(10) 내부를 격막할 수 있고, 격막에 하나 이상의 밀페 공간으로 분리될 수 있다. 또한, 압력 결정 장치(10)는 밀폐된 하나 이상의 공간 내부에 설치되어 고압의 산소를 공급하는 산소 공급 장치를 구비할 수 있으며, 산소 공급 장치에 전원을 공급하는 전원 공급 장치를 더 구비할 수 있다. The pressure determining device 10 has an entrance on the side, and can partition the inside of the device 10 so as to separate the device 10 into one or more sealed spaces, and can be separated into one or more airtight spaces in the diaphragm. have. In addition, the pressure determining device 10 may include an oxygen supply device installed in one or more sealed spaces to supply high pressure oxygen, and may further include a power supply device supplying power to the oxygen supply device. .
이와 같은 압력 결정 장치(10)는 챔버 내의 사용자 또는 환자에 대하여 고막운동성 검사의 기본 이론을 바탕으로 고압환경에서 환자의 외이도 용적을 측정하고, 고막의 어드미턴스를 분석하여 압력 평형 상태를 예측할 수 있으며, 압력 평형 상태에 도달하기 위한 압력을 결정할 수 있다. The pressure determining device 10 may predict the pressure equilibrium state by measuring the volume of the ear canal of the patient in a high pressure environment and analyzing the admittance of the tympanic membrane for a user or a patient in the chamber based on the basic theory of tympanic mobility test. The pressure to reach pressure equilibrium can be determined.
고막 운동성 검사는 어쿠스틱 이미턴스 측정이며, 고막의 소리 흡수율을 측정하는 검사로서, 검사결과와 챔버의 내부압력을 통해 고막을 기준으로 내압과 외압을 차를 추정할 수 있다. 어드미턴스가 최대가 되는 상태가 고막이 최대 흡수율을 갖는 상태로 내압과 외압이 동일함을 의미할 수 있다. 유스타키오관을 통해 공기를 불어넣어 중이 내의 압축된 공기 용적을 확보하여 중이의 압축된 공기 용적을 확보하여 중이의 압력 평형을 이루게 된다. 압력 결정 장치(10) 내의 압력이 가압되는 경우 고막이 중이강 쪽으로 함몰되고, 압력이 감압되는 경우 고막이 외이도 방향으로 팽창될 수 있다. The tympanic motility test is an acoustic emission measurement and a test for measuring the sound absorption rate of the tympanic membrane. The difference between the internal pressure and the external pressure can be estimated based on the eardrum based on the test result and the internal pressure of the chamber. The state where the admittance is maximum may mean that the internal pressure and the external pressure are the same as the eardrum has the maximum absorption rate. The air is blown through the eustachian tube to secure the compressed air volume in the middle ear, thereby obtaining the compressed air volume in the middle ear, thereby achieving pressure equalization of the middle ear. When the pressure in the pressure determining device 10 is pressurized, the eardrum may be recessed toward the middle ear cavity, and when the pressure is reduced, the eardrum may expand in the ear canal direction.
이와 같은 압력 결정 장치(10)의 동작과 관련하여 이하 도 2를 통해 자세히 설명하고자 한다. This operation of the pressure determining device 10 will be described in detail with reference to FIG. 2.
도 2는 본원발명의 일 실시예에 따른 압력 결정 장치(10)의 구성도이다. 도 2를 참조하면, 압력 결정 장치(10)는 스피커(101), 마이크(102), 측정부(103), 압력 결정부(104)를 포함할 수 있다. 다만, 압력 결정 장치(10)의 구성이 앞서 개시된 것들로 한정되는 것은 아니다. 일 예로, 압력 결정 장치(10)는 고막 상태 정보 생성부(105), 압력 조절부(106), 안내 정보 생성부(미도시) 및 통신부(미도시)를 더 포함할 수 있다. 2 is a block diagram of a pressure determining apparatus 10 according to an embodiment of the present invention. Referring to FIG. 2, the pressure determining device 10 may include a speaker 101, a microphone 102, a measuring unit 103, and a pressure determining unit 104. However, the configuration of the pressure determining device 10 is not limited to those disclosed above. For example, the pressure determining device 10 may further include a tympanic state information generating unit 105, a pressure adjusting unit 106, a guide information generating unit (not shown), and a communication unit (not shown).
스피커(101)는 소정 주파수 대역의 사운드를 챔버 내부의 사용자의 고막에 지향하여 출력할 수 있다. 예를 들면, 스피커(101)는 220Hz 내지 230Hz의 단일음을 고막에 지향하여 출력할 수 있다. 좀 더 상세히 말하면 스피커(101)는 226Hz의 단일음을 DAC(Digital to Analog Converter)를 통해 챔버 내 사용자의 고막에 지향하여 발생시킬 수 있다. The speaker 101 may direct sound of a predetermined frequency band to the eardrum of the user inside the chamber and output the sound. For example, the speaker 101 may direct and output a single sound of 220 Hz to 230 Hz toward the eardrum. In more detail, the speaker 101 may generate a single sound of 226 Hz directed toward the eardrum of the user in the chamber through a digital to analog converter (DAC).
스피커(101)에서 전달되는 소리는 여러 특징을 가질 수 있다. 스피커(101)에서 전달되는 소리의 주파수와는 상관없는 특성으로 이소골 연결부위의 마찰, 공기 입자가 중이 구조물에 부딪히는 힘, 와우관의 기계적 형태 등에 의해 발생하는 마찰이 있을 수 있다. 스피커(101)에서 전달되는 소리의 주파수와 관련이 있는 특성으로 고막, 이소골 등 유연성과 상관성이 있는 강직도, 탄성력 등이 있다. The sound transmitted from the speaker 101 may have various features. As a characteristic irrespective of the frequency of the sound transmitted from the speaker 101, there may be friction generated by the friction between the isogol connecting part, the force of the air particles striking the middle ear structure, the mechanical shape of the cochlea tube, and the like. As a characteristic related to the frequency of the sound transmitted from the speaker 101, there are rigidity, elasticity, and the like, which correlate with flexibility, such as a tympanic membrane and isogol.
마이크(102)는 사용자의 고막에서 반사된 반사파를 수신할 수 있다. 일 예로, 마이크(102)는 압력에 의해 팽창된 고막에 반사되어 돌아온 반사파를 수신할 수 있다. The microphone 102 may receive the reflected wave reflected from the eardrum of the user. As an example, the microphone 102 may receive the reflected wave returned by the reflected eardrum by the pressure.
측정부(103)는 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 사용자의 고막에서의 어드미턴스를 측정할 수 있다. 이 때, 측정부(103)는 수신된 반사파를 소정 주파수 통과 대역을 가지는 필터에 통과시키고, 푸리에 고속변환(FFT)하여 수신된 반사파에 포함된 노이즈를 제거하여, 반사파 중 사운드에 대응하는 성분을 측정할 수 있다. 예를 들어, 측정부(103)는 마이크(102)를 통해 수신된 반사파를 7.232kHz 대역의 샘플링 레이트(Sampling rate)로 ADC(Analog to Digital Converter)할 수 있다. 이 때, 한정된 대역의 주파수를 적절한 샘플링 간격을 취하면 샘플링 과정에서 정보의 유실 없이 완전히 재생될 수 있는 나이퀴스트 이론에 따라 일반적으로 필요한 샘플링 레이트는 452Hz이나, 푸리에 고속변환을 통해 226Hz 성분만을 추출하기 위해 226Hz의 2^5배인 7.232kHz가 샘플링 레이트로 설정될 수 있다. 측정부(103)는 226Hz 대역의 신호를 제외한 노이즈를 제거하기 위해 226Hz의 통과대역을 가지는 2nd order IIR Peak Filter를 취할 수 있고, 이후 필터링된 신호에 푸리에 고속변환을 적용하여 마이크(102)에 수신된 반사파 중 스피커(101)를 통해 출력된 사운드에 대응하는 성분을 측정할 수 있다. The measurement unit 103 may measure an admittance in the eardrum of the user based on the magnitude of the output sound and the magnitude of a component corresponding to the sound among the reflected waves. At this time, the measurement unit 103 passes the received reflected wave through a filter having a predetermined frequency pass band, removes noise included in the received reflected wave by Fourier fast transform (FFT), and removes a component corresponding to sound from the reflected wave. It can be measured. For example, the measuring unit 103 may perform an analog to digital converter (ADC) on the reflected wave received through the microphone 102 at a sampling rate of 7.232 kHz. At this time, the sampling rate is generally 452Hz according to the Nyquist theory, which can be reproduced completely without loss of information in the sampling process with proper sampling interval of limited band frequency, but only 226Hz component is extracted through Fourier fast conversion. For example, 7.232 kHz, 2 ^ 5 times 226 Hz, can be set as the sampling rate. The measurement unit 103 may take a 2nd order IIR peak filter having a passband of 226Hz to remove noise except for the signal of the 226Hz band, and then apply the Fourier fast transform to the filtered signal to receive the microphone 102. The component corresponding to the sound output through the speaker 101 among the reflected waves can be measured.
측정부(103)는 외이도 입구에서 226Hz 대역의 사운드를 이용하여 고막의 어드미턴스를 측정하는 경우, 외이도의 용적과 고막의 어드미턴스 정보를 모두 포함하여 측정될 수 있으며, 측정부(103)는 사용자의 고막에서의 어드미턴스를 측정하는데 있어서, 스피커(101)를 통해 발생되는 226Hz 대역의 사운드의 최대값 및 반사파 중 사운드에 대응하는 성분의 크기의 최대값을 이용하여 측정할 수 있다. When the measurement unit 103 measures the admittance of the eardrum using sound in the 226 Hz band at the entrance to the ear canal, the measurement unit 103 may include both the volume of the ear canal and the admittance information of the eardrum, and the measurement unit 103 may be measured by the user's eardrum. In measuring the admittance at, it may be measured using the maximum value of the sound in the 226 Hz band generated through the speaker 101 and the maximum value of the component corresponding to the sound among the reflected waves.
Figure PCTKR2017015671-appb-M000001
Figure PCTKR2017015671-appb-M000001
외이도의 용적과 어드미턴스를 포함하는 전체 어드미턴스 TA(Total Admittance)는 상기된 수학식 1과 같이 스피커와 마이크를 통해 얻을 수 있다. 인간의 중이는 226Hz에서 스피커(101)에서 출력된 사운드 및 마이크(102)에서 수신된 반사파 간의 위상차이가 약 90도가 되고, 실수값은 0에 수렴하게 된다. 따라서 어드미턴스 Y는 어쿠스틱 서셉턴스 B와 1:1로 매칭되며 아래 수학식 2와 같이 나타낼 수 있다. The total admittance TA (Total Admittance) including the volume and admittance of the ear canal can be obtained through a speaker and a microphone as shown in Equation 1 above. The human middle ear has a phase difference of approximately 90 degrees between the sound output from the speaker 101 and the reflected wave received from the microphone 102 at 226 Hz, and the real value converges to zero. Therefore, the admittance Y is matched 1: 1 with the acoustic susceptance B and can be expressed by Equation 2 below.
Figure PCTKR2017015671-appb-M000002
Figure PCTKR2017015671-appb-M000002
한편, 수학식 1에서 마이크(101) 및 스피커(102)를 통해 측정할 수 있는 전체 어드미턴스는 외이도 용적(ECV: Ear Canal Volume)과 고막의 어드미턴스 (TMA: Tympanic Membrane Admittance)의 합으로 표현할 수 있다. 일반적으로 사람의 고막은 고막 내부와 외부의 압력차가 200daPa를 넘을 경우 고막이 최대로 팽창하여 소리를 흡수하는 능력을 상실하게 되고 고막의 어드미턴스는 0에 수렴하게 되므로, 고막의 내부와 외부의 압력차가 없을 경우 고막의 어드미턴스는 최대값을 갖고 이 때, 고막이 압력 평형 상태에 있는 것이라고 할 수 있다. 한편, 고막이 최대로 팽창하여 압력 불평형 상태에 있는 경우, 고막의 어드미턴스는 0이되고 이 때 측정되는 전체 어드미턴스는 외이도 용적 만을 나타낼 수 있다. Meanwhile, in Equation 1, the total admittance that can be measured through the microphone 101 and the speaker 102 may be expressed as the sum of the ear canal volume (ECV) and the admittance of the tympanic membrane (TMA: Tympanic Membrane Admittance). . In general, when the pressure difference between the inside and outside of the eardrum exceeds 200 daPa, the eardrum expands to the maximum and loses the ability to absorb sound. The admittance of the eardrum converges to zero, so there is no pressure difference between the inside and outside of the eardrum. If the tympanic membrane's admittance has a maximum value, it can be said that the tympanic membrane is at pressure equilibrium. On the other hand, when the tympanic membrane is in a state of maximum pressure unbalance, the admittance of the tympanic membrane becomes zero and the total admittance measured at this time may represent only the ear canal volume.
Figure PCTKR2017015671-appb-M000003
Figure PCTKR2017015671-appb-M000003
외이도 용적은 수학식 3과 같이 나타낼 수 있다. 이 때, p는 공기 밀도, c는 음파의 속도, f는 소리의 주파수, v는 내부 부피(volume of enclosure)가 된다. 대기압과 온도가 20도이고, 226hz의 주파수를 사용하는 경우, 외이도 용적은 아래 수학식 4와 같이 구할 수 있다. The ear canal volume can be expressed as in Equation 3. Where p is the air density, c is the speed of sound waves, f is the frequency of sound, and v is the volume of enclosure. If the atmospheric pressure and temperature is 20 degrees, and using a frequency of 226 hz, the ear canal volume can be obtained as shown in Equation 4 below.
Figure PCTKR2017015671-appb-M000004
Figure PCTKR2017015671-appb-M000004
이와 같이, 측정부(103)는 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 사용자의 고막에서의 어드미턴스를 측정할 수 있다. As such, the measurement unit 103 may measure the admittance in the eardrum of the user based on the magnitude of the output sound and the magnitude of a component corresponding to the sound among the reflected waves.
한편, 측정부(103)는 고막의 어드미턴스와 고막을 기준으로 외부에 가해지는 챔버 압력 등의 외부 압력을 이용하여 사용자의 고막을 기준으로 중이 내부 압력을 추정할 수 있고, 이를 통해 압력차를 측정할 수도 있다. 일반적으로 측정된 압력차가 800daPa를 넘을 경우, 통증과 같은 바로트라우마(barotrauma) 초기 증상이 발생할 수 있고, 1200daPa에 도달할 경우, 환자 스스로의 노력에 의한 유스타키오관 개폐가 불가능하게 되며, 외부 압력에 대한 내부 압력의 압력 평형을 이룰 수 없게 된다. 이를 계속하여 압력차가 커지는 경우, 극심한 통증, 파열, 천공과 같은 물리적 손상을 입거나 청력 손실에 이를 수 있다. Meanwhile, the measurement unit 103 may estimate the middle ear pressure based on the eardrum of the user using an admittance of the eardrum and an external pressure such as a chamber pressure applied to the outside based on the eardrum, thereby measuring the pressure difference. You may. In general, when the measured pressure difference exceeds 800 daPa, early symptoms of barotrauma such as pain may occur, and when reaching 1200 daPa, it is impossible to open and close the eustachian tube by the patient's own effort, Pressure equalization of the internal pressure will not be achieved. If this pressure continues to increase, physical damage such as severe pain, rupture, perforation, or hearing loss can occur.
압력 결정부(104)는 측정된 어드미턴스에 기초하여 챔버 내의 압력을 결정할 수 있다. 도 3을 통해 압력 결정부(104)의 동작을 예로 들면, 도 3은 본원발명의 일 실시예에 따른 고막에서의 어드미턴스를 측정하고, 압력을 결정하는 과정을 나타내는 도면이다. The pressure determiner 104 may determine the pressure in the chamber based on the measured admittance. Taking the operation of the pressure determiner 104 as an example through FIG. 3, FIG. 3 is a diagram illustrating a process of measuring admittance in the eardrum and determining a pressure according to an embodiment of the present invention.
도 3을 참조하면 사용자가 챔버 내에 입장하고, 대기압을 기준으로 챔버 압력(302)을 200daPa가압(S301)할 수 있다. 챔버 압력(302)이 증가함에 따라 측정부(103)에서 고막의 어드미턴스(301)는 점차 0에 수렴하게 되는 것을 측정하고 이후, 사용자의 노력을 통해 압력 평형을 유도하게 되면, 내부 압력(303)이 점차 증가하여 내부 압력(303)과 외부 압력(302)이 같아지는 압력 평형 상태(S302)에 이르게 되고, 이 때, 측정부(103)는 고막의 어드미턴스의 최대값을 측정할 수 있다. 이후, 챔버 압력(303)을 200daPa 가압(S303)하면, 압력 불평형 상태가 되어 고막의 어드미턴스는 다시 0에 수렴하게 되고, 챔버 압력(303)을 400daPa 감압(S304)하게 되면 외부 압력(302)가 줄어듦에 따라 점차 압력 평형 상태가 되어 고막의 어드미턴스는 최대값이 되고, 감압이 계속됨에 따라 챔버 압력(302)가 내부 압력(303)보다 낮아지는 경우, 다시 압력 불평형 상태가 되어 고막의 어드미턴스가 0에 수렴하게 된다. 즉, 챔버 압력(302) 및 내부 압력(303)의 차이(304)가 0인 경우, 또는 고막의 어드미턴스가 최대값이 되는 경우 압력 평형 상태에 있는 것으로 추정할 수 있다. Referring to FIG. 3, the user may enter the chamber and pressurize the chamber pressure 302 at 200 daPa based on the atmospheric pressure (S301). As the chamber pressure 302 increases, the measurement unit 103 measures that the admittance 301 of the tympanic membrane gradually converges to zero, and then induces pressure equilibrium through the user's effort. This gradually increases to reach a pressure equilibrium state S302 where the internal pressure 303 and the external pressure 302 are equal, and at this time, the measurement unit 103 can measure the maximum value of the admittance of the tympanic membrane. Subsequently, when the chamber pressure 303 is pressurized at 200 daPa (S303), the pressure becomes unbalanced, and the admittance of the eardrum converges to zero again. When the chamber pressure 303 is reduced to 400 daPa (S304), the external pressure 302 becomes As it decreases, the pressure equilibrium gradually increases, and the tympanic admittance becomes the maximum value. When the chamber pressure 302 becomes lower than the internal pressure 303 as the decompression continues, the pressure becomes unbalanced again and the admittance of the tympanic membrane becomes zero. Converges to. That is, it can be estimated that the pressure is in equilibrium when the difference 304 between the chamber pressure 302 and the internal pressure 303 is zero, or when the admittance of the tympanic membrane reaches a maximum value.
다시 말해 가압 또는 감압을 통해 압력이 변화하는 환경에서 측정부(103)는 사용자의 고막에서의 어드미턴스를 연속적으로 측정하여 사용자가 현재 압력 평형 상태에 있는지 여부를 측정할 수 있고, 압력 결정부(104)는 사용자의 어드미턴스가 최대값이 되는 시점에서의 현재 압력을 챔버 내 사용자에게 가압 가능한 가압 압력으로 결정할 수 있다.In other words, in an environment in which the pressure changes through pressurization or depressurization, the measurement unit 103 may continuously measure the admittance of the user's eardrum to determine whether the user is currently in an equilibrium state, and the pressure determination unit 104 ) May determine the current pressure at the time when the user's admittance becomes the maximum value as the pressurized pressure that can be pressed to the user in the chamber.
앞서 설명된 도 3을 예로 들면, 챔버 압력(302)이 증가함에 따라 측정부(103)를 통해 측정되는 어드미턴스(301)는 점차 0에 수렵하게 되고, 사용자의 노력에 따라 내부 압력(303)이 점차 증가하여 고막에서 압력 평형을 이루게 되는 경우, 측정부(103)를 통해 측정되는 어드미턴스(301)는 최대값을 가지게 된다. 압력 결정부(104)는 어드미턴스(301)가 최대값을 시점에서의 압력인 200daPa를 사용자에게 가압 가능한 가압 압력으로 결정할 수 있다.Referring to FIG. 3 described above, as the chamber pressure 302 increases, the admittance 301 measured by the measuring unit 103 gradually hunts to zero, and according to the user's effort, the internal pressure 303 increases. When gradually increasing to achieve pressure equilibrium in the tympanic membrane, the admittance 301 measured by the measuring unit 103 has a maximum value. The pressure determiner 104 may determine the maximum value of the admittance 301 as a pressurized pressure capable of pressing 200 daPa, which is the pressure at the time point, to the user.
본원발명에서 압력 평형이라 고막 내 외부의 압력이 동일한 것을 의미하며, 측정부(103)에서 측정한 어드미턴스는 고막 내 외부의 압력이 동일한 경우, 최대값을 가질 수 있다. 따라서 압력 평형 및 최대 어드미턴스, 어드미턴스의 최대값은 혼용되어 사용될 수 있으며, 압력 결정부(104)는 압력 평형이 이루어지는 시점의 압력을 챔버 내의 압력으로 결정할 수 있으며, 이 때 결정된 압력은 사용자에게 가압 가능한 가압 압력일 수 있다. In the present invention, the pressure balance means that the external pressure in the tympanic membrane is the same, and the admittance measured by the measuring unit 103 may have a maximum value when the external pressure in the tympanic membrane is the same. Therefore, the pressure balance, the maximum admittance and the maximum value of the admittance can be used interchangeably, and the pressure determination unit 104 can determine the pressure at the time when the pressure equilibrium is achieved as the pressure in the chamber, and the determined pressure can be pressurized to the user. May be pressurized pressure.
고막의 탄성력은 소리를 흡수할 수 있는 능력을 나타내며, 어드미턴스가 0에 수렴한 지점에서 탄성력이 가장 낮아 고막의 소리 흡수량이 낮다. 이 때, 고막이 팽팽히 긴장되어 반사가 커지며, 중이 내부와 외부의 압력차로 인해 귀가 멍해지는 현상이 발생하여 소리가 잘 들리지 않게 된다. 한편, 어드미턴스가 최대인 지점에서 고막의 탄성력이 가장 높으며 고막의 소리 흡수량이 높다. 이 지점이 소리 에너지를 전달하기 위한 최적의 환경이라 할 수 있으며, 고막이 느슨하게 이완되어 반사가 적고 흡수량이 증가하게 된다. 외이도와 중이강의 압력이 동등할 때이며, 고막을 기준으로 내압과 외압이 동일한 시점이 된다. The elastic force of the tympanic membrane indicates the ability to absorb sound. At the point where the admittance converges to zero, the elastic force is the lowest and the sound absorption of the tympanic membrane is low. At this time, the tympanic membrane is tense and the reflection is increased, and the ear is bruised due to the pressure difference between the inside and the outside of the middle ear, and the sound is hard to be heard. On the other hand, the elastic force of the eardrum is the highest at the point where the admittance is maximum, and the sound absorption of the eardrum is high. This is the best environment for transmitting sound energy, and the eardrum loosens, resulting in less reflection and increased absorption. This is when the external auditory meatus and middle ear pressure are equal, and the internal pressure and external pressure are the same point of time with respect to the eardrum.
측정부(103)는 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 사용자의 고막에서의 어드미턴스를 측정하고, 압력 결정부(104)는 측정된 어드미턴스에 기초하여 챔버 내의 압력을 결정할 수 있다. 이 때, 압력은 사용자에게 가압 가능한 압력이고, 가압 가능한 압력이라 사용자의 고막에 바로 트라우마를 발생시키지 않고, 사용자 스스로 압력 평형 도달할 수 있는 압력을 뜻할 수 있다. The measuring unit 103 measures the admittance in the user's eardrum based on the magnitude of the output sound and the magnitude of the component corresponding to the sound among the reflected waves, and the pressure determining unit 104 measures the pressure in the chamber based on the measured admittance. Can be determined. At this time, the pressure is a pressure that can be pressurized to the user, it means a pressure that can reach the pressure equilibrium by the user without generating a trauma directly to the user's eardrum because it is pressurizable pressure.
고막 상태 정보 생성부(105)는 측정된 어드미턴스 및 결정된 압력에 기초하여 사용자의 고막 상태 정보를 생성할 수 있다. 고막 상태 정보는 고막의 휨 정보, 고막이 현재 정상 상태인지 여부, 고막의 현재 상태에 대응하는 압력의 범위, 위험 정도, 위험 레벨, 압력 평형 상태 여부 등의 정보를 포함할 수 있으나 이에 한정되는 것은 아니며 고막의 상태와 관련된 다양한 정보들을 더 포함할 수 있다. The tympanic state information generating unit 105 may generate the tympanic state information of the user based on the measured admittance and the determined pressure. The tympanic condition information may include, but is not limited to, information about the flexural information of the tympanic membrane, whether the tympanic membrane is currently in a normal state, the pressure range corresponding to the current state of the tympanic membrane, the degree of danger, the level of danger, and whether the pressure is in equilibrium It may further include various information related to the condition of the tympanic membrane.
고막 상태 정보 생성부(105)는 측정부(103)에서 측정된 어드미턴스가 최대 어드미턴스인 경우, 압력 평형 상태에 있으며 현재 고막의 상태를 정상 상태인 것으로 판단하여 고막 상태 정보를 생성하고, 측정부(103)에서 측정된 어드미턴스가 0에 수렴하는 최소 어드미턴스인 경우, 압력 불평형 상태에 있으며, 현재 고막의 상태를 위험한 상태인 것으로 판단하여 고막 상태 정보를 생성할 수도 있다. When the admittance measured by the measuring unit 103 is the maximum admittance, the tympanic state information generating unit 105 determines that the state of the tympanic membrane is in a normal state and generates a tympanic state information, and measures the measuring unit ( If the admittance measured at 103 is the minimum admittance converged to zero, the pressure is in an unbalanced state, and the eardrum state information may be generated by determining that the current state of the eardrum is a dangerous state.
측정부(103)는 결정된 압력에 대응하는 제 2 어드미턴스를 측정하되, 압력 결정부(104)는 어드미턴스 및 제 2 어드미턴스에 기초하여 압력을 갱신할 수 있다. 측정부(103)는 결정된 압력에 기초하여 챔버 내 압력이 가압되는 중 고막에서의 제 2 어드미턴스를 측정하되, 압력 결정부(104)는 측정된 제 2 어드미턴스가 최대값을 갖는 경우, 측정된 어드미턴스에 대응하는 압력에 제 2 어드미턴스에 대응하는 압력을 더하여 압력을 갱신할 수 있다. 압력 조절부(106)는 결정된 압력에 기초하여 챔버 내 압력을 조절할 수 있다. The measurement unit 103 may measure the second admittance corresponding to the determined pressure, but the pressure determiner 104 may update the pressure based on the admittance and the second admittance. The measuring unit 103 measures the second admittance in the middle ear film while the pressure in the chamber is pressurized based on the determined pressure, but the pressure determining unit 104 measures the admittance measured when the measured second admittance has the maximum value. The pressure may be updated by adding a pressure corresponding to the second admittance to a pressure corresponding to. The pressure regulator 106 may adjust the pressure in the chamber based on the determined pressure.
예를 들면, 압력 결정부(104)는 측정부(103)에서 측정된 어드미턴스가 최대인 경우, 챔버 내의 현재 압력을 가압 압력으로 결정할 수 있고, 측정된 어드미턴스가 최소인 경우 고막 상태 정보 생성부(105)는 현재 사용자의 고막 상태가 위험하다는 고막 상태 정보를 생성하고, 압력 조절부(106)는 측정된 어드미턴스가 최소인 경우, 사용자의 고막 상태를 고려하여 압력을 감압할 수 있다. 상기된 실시예와 관련하여 이하 도 5a 내지 도5c를 통해 다시 한번 설명하고자 한다. For example, when the admittance measured by the measuring unit 103 is the maximum, the pressure determiner 104 may determine the current pressure in the chamber as the pressurized pressure, and when the measured admittance is the minimum, the eardrum state information generator ( 105 may generate the eardrum state information indicating that the user's eardrum state is dangerous, and the pressure controller 106 may reduce the pressure in consideration of the user's eardrum state when the measured admittance is minimum. With reference to the above embodiment will be described once again with reference to Figures 5a to 5c.
도 5a 내지 5c는 본원발명의 일 실시예에 따른 챔버 내 압력을 결정하는 과정을 나타내는 도면이다. 다만, 도 5a 내지 5c를 통해 설명되는 실시예는 본원의 다앙한 실시예 중 이해의 편의를 돕기 위한 일 예를 설명하고 있을 뿐으로, 도5a 내지 5c에 대한 설명으로 본원발명이 한정되는 것은 아니며, 이 밖에 다양한 실시예들이 더 존재할 수 있음이 자명하다. 5A to 5C are views illustrating a process of determining the pressure in a chamber according to an embodiment of the present invention. However, the embodiments described with reference to FIGS. 5A to 5C illustrate only one example for aiding an understanding of various embodiments of the present disclosure, and the present invention is not limited to the description of FIGS. 5A to 5C. It is apparent that various other embodiments may exist.
도 5a를 참조하면, 압력 결정 장치(10)는 환자의 고막 상태를 연속적으로 모니터링하기 위해 가압을 진행할 수 있다. 압력 차이(304)가 0인 경우, 고막을 기준으로 내부 압력(303)과 외부 압력(302)가 동일한 것을 알 수 있으므로, 이는 고막 내 외부의 압력이 평행 상태에 있음을 의미할 수 있다. 따라서, 압력 평형 시점을 기준으로 압력차에 따른 챔버 압력 가압 한계지점과 바로트라우마 발생지점에 따라 가압 가능 범위를 선정할 수 있으며, 측정부(103)는 압력평형 시점으로부터 일정범위의 압력을 가압하는 중 연속적으로 어드미턴스를 측정함으로서 환자의 압력 평형 유무를 확인할 수 있다. 또한, 가압 가능 압력 범위에 도달하기 전에 환자의 압력 평형이 관찰되는 경우, 압력 결정부(104)는 가압 가능한 압력을 갱신할 수도 있다. Referring to FIG. 5A, the pressure determining device 10 may pressurize to continuously monitor the eardrum state of the patient. When the pressure difference 304 is 0, since the internal pressure 303 and the external pressure 302 are equal to each other based on the eardrum, this may mean that the external pressure in the eardrum is in a parallel state. Therefore, the pressurization range can be selected according to the chamber pressure pressurization limit point and the barotrauma generation point according to the pressure difference on the basis of the pressure equilibrium time point, and the measuring unit 103 pressurizes a predetermined range of pressure from the pressure equilibrium point of time. By continuously measuring the admittance, the presence or absence of pressure equilibrium can be confirmed. In addition, when the pressure balance of the patient is observed before reaching the pressurizable pressure range, the pressure determiner 104 may update the pressurizable pressure.
S501에서 최초 가압 가능 압력은 800daPa 였으며, 압력 조절부(106)를 통해 챔버 압력(302)을 가압하는 중 600daPa가 되는 시점에서 환자의 내부 압력(303)이 증가하여 압력 차이(304)가 0이되고, 측정부(103)를 통해 측정된 어드미턴스가 최대값을 가져 압력 평형 상태에 도달하는 경우, 압력 결정부(104)는 가압 가능 압력을 관측된 시점에서 가압 제한 압력을 갱신하여 1400daPa로 갱신(S502)할 수 있다. In S501, the initial pressurizable pressure was 800 daPa, and the internal pressure 303 of the patient increased when the pressure became 600 daPa during the pressurization of the chamber pressure 302 through the pressure adjusting unit 106, so that the pressure difference 304 became zero. When the admittance measured through the measuring unit 103 reaches the pressure equilibrium state with the maximum value, the pressure determining unit 104 updates the pressurized pressure at the time point at which the pressure can be observed to be updated to 1400 daPa ( S502).
도 5b를 참조하면, 압력 조절부(106)에서 결정된 압력까지 조절된 이후에 가압 가능 압력까지 압력 평형 상태에 있어 고막 상태가 정상임을 나타내는 고막 상태 정보가 생성되지 않는 경우, 즉 압력 평형이 측정되지 않는 경우, 측정된 어드미턴스 및 결정된 압력에 기초하여 어드미턴스가 최대가 되도록 유도하는 안내 정보를 생성하는 안내 정보 생성부(미도시)는 안내 정보를 통해 환자가 압력 평형을 할 수 있도록 유도하고 일정 시간 동안 대기(S503)하고, 압력 평형이 일정 시간 내에 이루어질 경우, 가압 가능 압력을 갱신(S504) 한 후 계속해서 가압을 진행할 수 있다. 이 때, 생성되는 안내 정보는 음성 안내가 될 수 있으며, 영상, 이미지 등 다양한 방식을 통해 생성될 수 있다. Referring to FIG. 5B, if the tympanic membrane state information indicating that the tympanic state is normal in the pressure equilibrium state until the pressurizable pressure is adjusted to the determined pressure in the pressure adjusting unit 106 is not generated, that is, the pressure equilibrium is not measured. If not, the guidance information generation unit (not shown) for generating guidance information for inducing the maximum admittance based on the measured admittance and the determined pressure is guided to guide the patient to balance the pressure through the guidance information for a predetermined time In the case of waiting (S503), and if the pressure balance is made within a predetermined time, it is possible to continue the pressurization after updating the pressable pressure (S504). In this case, the generated guide information may be voice guidance and may be generated through various methods such as an image and an image.
도 5c를 참조하면, 일정 시간 내에 압력 평형이 이루어지지 않을 경우, 챔버 내부 압력(302)를 감압할 수 있다. 측정부(103)는 챔버 내부 압력을 감압 시 고막의 어드미턴스가 상승하는 시점에서 압력 차이(304)가 200daPa 내외인 것을 알 수 있으며, 압력 차이(304)가 0이 되는 시점에서 압력 평형이 이루어짐을 측정할 수 있다. Referring to FIG. 5C, when pressure equalization is not performed within a predetermined time, the chamber internal pressure 302 may be reduced. The measurement unit 103 may know that the pressure difference 304 is about 200 daPa when the admittance of the tympanic membrane increases when the pressure inside the chamber is decompressed, and the pressure equilibrium is performed when the pressure difference 304 becomes zero. It can be measured.
도 5a 내지 도 5c에서 측정부(103)는 고막에서의 어드미턴스(301)를 연속적으로 측정하고, 압력 결정부(104)를 통해 결정된 압력은 800daPa이고, 압력 조절부(106)를 통해 챔버 압력(302)를 200daPa로 가압한 이후, 600daPa가 된 시점에서 측정부(103)가 어드미턴스의 최대값을 측정하는 경우, 압력 결정부는 기 결정된 압력인 800daPa에 측정부(103)에서 최대 어드미턴스를 측정한 시점에서의 압력인 600daPa를 더한 1400daPa를 챔버 내 압력으로 결정할 수 있다. 이 때, 압력은 사용자에게 가압 가능한 가압 압력일 수 있다. 다시 말해, 측정부(103)를 통해 연속적으로 고막에서의 어드미턴스를 측정하는 중 최대 어드미턴스가 측정되는 경우, 압력 결정부(104)는 챔버 내의 압력을 결정할 수 있으며, 챔버 내의 압력이 변화하는 중 측정부(103)에서 다시 한번 최대 어드미턴스가 측정되는 경우, 압력 결정부(104)는 기 결정된 압력을 갱신할 수 있다. 5A to 5C, the measuring unit 103 continuously measures the admittance 301 in the tympanic membrane, and the pressure determined by the pressure determining unit 104 is 800 daPa, and the chamber pressure ( When the measuring unit 103 measures the maximum value of the admittance at the time when the pressure becomes 302 Da and 200 daPa, the pressure determining unit measures the maximum admittance in the measuring unit 103 at 800 daPa which is a predetermined pressure. The pressure in the chamber can be determined as 1400 daPa plus 600 daPa at. In this case, the pressure may be a pressurizable pressure pressurizable to the user. In other words, when the maximum admittance is measured while continuously measuring the admittance in the tympanic membrane through the measuring unit 103, the pressure determining unit 104 may determine the pressure in the chamber and measure while the pressure in the chamber changes. When the maximum admittance is measured once again in the unit 103, the pressure determiner 104 may update the predetermined pressure.
본원발명의 실시예에 따르면 측정된 어드미턴스를 외부에 위치한 외부 장치로 전송하는 통신부(미도시)를 더 포함할 수 있으며, 압력 결정부(104)는 전송된 어드미턴스에 대응하여 외부 장치로부터 수신된 제어 명령에 기초하여 압력을 결정할 수 있다. 예를 들어, 통신부는 측정부(103)에서 측정된 어드미턴스를 외부에 위치한 컴퓨터로 전송할 수 있으며, 압력 결정부(104)는 외부에 위치한 컴퓨터로부터 수신된 제어 명령에 기초하여 압력을 결정할 수 있다. 한편, 압력 조절부(106)는 컴퓨터로부터 수신된 제어 명령에 기초하여 압력을 조절할 수 있다. According to an embodiment of the present invention may further include a communication unit (not shown) for transmitting the measured admittance to an external device located outside, the pressure determiner 104 is a control received from the external device in response to the transmitted admittance The pressure can be determined based on the command. For example, the communication unit may transmit the admittance measured by the measuring unit 103 to a computer located outside, and the pressure determiner 104 may determine the pressure based on a control command received from the computer located outside. Meanwhile, the pressure adjusting unit 106 may adjust the pressure based on the control command received from the computer.
이와 같은 압력을 결정하는 장치(10)는 청력계에 이상이 없는 경우에만 적용이 가능하며, 이소골의 강성이 증가된 경우, 대기압에서 전도 정도와 압력 상태에서 전도 정도의 차이가 작은 As형 고막 운동도를 보이거나, 이소골의 강성을 잃어 고막의 운동능력이 비정상적으로 큰 Ad형 고막 운동도를 보이거나, 최대값이 0.2 이하를 보이는 B형 고막 운동도가 나타나거나, 최대값이 -100 내지 -200daPa 영역에 존재하는 C형 고막 운동도를 보이거나, E형 고막 운동도를 보이는 경우에는 적용할 수 없다. The device 10 for determining the pressure can be applied only when there is no abnormality in the audiometer, and when the stiffness of the osseous bone is increased, the As-type tympanic motion having a small difference between the conduction degree at atmospheric pressure and the conduction degree under pressure is obtained. Or stiffness of the osseous bone to show Ad-type tympanic mobility with abnormally high mobility of the tympanic membrane, type B tympanic mobility with a maximum value of 0.2 or less, or a maximum value of -100 to -200 daPa. It is not applicable to the case of showing type C tympanic mobility present in the region or showing type E tympanic mobility.
본원발명의 다른 실시예에 따르면, 압력을 결정하는 장치(10)는 소정 주파수 대역의 사운드를 고막에 지향하여 출력하는 스피커, 사용자의 고막에서 반사된 반사파를 수신하는 마이크, 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 사용자의 고막에서의 어드미턴스를 측정하는 측정부, 챔버 내의 압력을 결정하는 압력 결정부 및 측정된 어드미턴스 및 결정된 압력에 기초하여 사용자의 고막 상태 정보를 생성하는 고막 상태 정보 생성부를 포함할 수도 있다. ,According to another embodiment of the present invention, the pressure determining device 10 includes a speaker for directing and outputting sound of a predetermined frequency band to the eardrum, a microphone for receiving the reflected wave reflected from the eardrum of the user, the magnitude of the output sound and Generates the eardrum status information of the user based on the measurement unit for measuring the admittance in the eardrum of the user based on the magnitude of the component corresponding to the sound of the reflected wave, the pressure determination unit for determining the pressure in the chamber and the measured admittance and the determined pressure The eardrum state information generating unit may be included. ,
도 4는 본원발명의 일 실시예에 따른 반사파 중 사운드에 대응하는 성분을 추출하는 과정을 나타내는 도면이다 도 4를 참조하면, 단계 S401에서 측정 명령이 수신되면, 단계 S402에서 스피커를 통해 소정 주파수 대역을 갖는 사운드를 고막에 지향하여 출력하고, 단계 S403에서 사용자의 고막에서 반사된 반사파를 마이크를 통해 수신할 수 있다. 단계 S404에서 수신된 반사파를 소정 주파수 대역으로 소리 신호를 샘플링하고, 단계 S405에서 반사파 중 사운드에 대응하는 신호를 검출하기 위해 2nd order IIR Filter를 취해 필터링을 수행한다. 단계 S406에서 푸리에 고속변환을 수행하여 반사파 중 사운드에 대응하는 신호를 검출하고, 단계 S407에서 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 어드미턴스를 측정할 수 있다. 이후, 단계 S408에서 측정된 어드미턴스 정보를 외부 장치로 전송할 수 있다. 4 is a diagram illustrating a process of extracting a component corresponding to a sound from reflected waves according to an embodiment of the present invention. Referring to FIG. 4, when a measurement command is received in step S401, a predetermined frequency band is passed through a speaker in step S402. The sound having the direction can be directed to the eardrum, and in step S403, the reflected wave reflected from the eardrum of the user can be received through the microphone. The sound signal is sampled using the reflected wave received in step S404 in a predetermined frequency band, and in step S405, a 2nd order IIR filter is taken to detect a signal corresponding to the sound among the reflected waves. In operation S406, a Fourier fast transform may be performed to detect a signal corresponding to the sound in the reflected wave, and the admittance may be measured based on the magnitude of the sound output in step S407 and the magnitude of the component corresponding to the sound in the reflected wave. Thereafter, the admittance information measured in step S408 may be transmitted to the external device.
도 4에서 설명하는 반사파 중 사운드에 대응하는 성분을 추출하는 과정은 본원의 다양한 실시에 중 하나에 불과하므로 이에 한정되지 않는다. The process of extracting a component corresponding to the sound from the reflected wave described in FIG. 4 is only one of various embodiments of the present disclosure, and is not limited thereto.
도 6은 본원발명의 일 실시예에 따른 챔버의 압력을 결정하는 방법을 나타내는 흐름도이다. 도 6에 따른 챔버의 압력을 결정하는 방법은 도 1 내지 도 5를 통해 설명된 압력 결정 장치(10)의 각 부에서 처리되는 내용을 설명한다. 따라서 이하 설명되지 않은 내용이라 할지라도, 도 1 내지 도 5를 통해 설명된 압력 결정 장치의 동작 설명에 포함되거나 유추 가능하므로 자세한 설명은 생략된다. 6 is a flowchart illustrating a method of determining the pressure of a chamber according to an embodiment of the present invention. The method of determining the pressure of the chamber according to FIG. 6 describes the contents processed in each part of the pressure determining device 10 described with reference to FIGS. 1 to 5. Therefore, even if not described below, the detailed description is omitted because it can be included or inferred in the operation description of the pressure determining device described with reference to FIGS.
도 6을 참조하면, 단계 S601에서 압력 결정 장치(10)는 소정 주파수 대역의 사운드를 챔버 내부의 사용자의 고막에 지향하여 출력하고, 단계 S602에서 사용자의 고막에서 반사된 반사파를 수신한다. 단계 S603에서 출력된 사운드의 크기 및 반사파 중 사운드에 대응하는 성분의 크기에 기초하여 고막에서의 어드미턴스를 측정하고, 단계 S604에서 측정된 어드미턴스에 기초하여 챔버 내의 압력을 결정할 수 있다. Referring to FIG. 6, in operation S601, the pressure determination apparatus 10 outputs sound of a predetermined frequency band to a user's eardrum inside the chamber, and receives a reflected wave reflected from the user's eardrum in step S602. The admittance in the tympanic membrane is measured based on the magnitude of the sound output in step S603 and the magnitude of the component corresponding to the sound in the reflected wave, and the pressure in the chamber can be determined based on the admittance measured in step S604.
전술한 본원의 설명은 예시를 위한 것이며, 본원이 속하는 기술분야의 통상의 지식을 가진 자는 본원의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. 예를 들어, 단일형으로 설명되어 있는 각 구성 요소는 분산되어 실시될 수도 있으며, 마찬가지로 분산된 것으로 설명되어 있는 구성 요소들도 결합된 형태로 실시될 수 있다. The above description of the present application is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present application. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.
본원의 범위는 상기 상세한 설명보다는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본원의 범위에 포함되는 것으로 해석되어야 한다.The scope of the present application is indicated by the following claims rather than the above description, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present application.

Claims (13)

  1. 챔버의 압력을 결정하는 장치에 있어서, In the apparatus for determining the pressure of the chamber,
    소정 주파수 대역의 사운드를 상기 챔버 내부의 사용자의 고막에 지향하여 출력하는 스피커;A speaker for directing and outputting sound of a predetermined frequency band to a user's eardrum in the chamber;
    상기 사용자의 고막에서 반사된 반사파를 수신하는 마이크;A microphone for receiving the reflected wave reflected from the eardrum of the user;
    상기 출력된 사운드의 크기 및 상기 반사파 중 상기 사운드에 대응하는 성분의 크기에 기초하여 상기 사용자의 고막에서의 어드미턴스를 측정하는 측정부; 및 A measuring unit measuring an admittance in the eardrum of the user based on the magnitude of the output sound and the magnitude of a component corresponding to the sound among the reflected waves; And
    상기 측정된 어드미턴스에 기초하여 상기 챔버 내의 압력을 결정하는 압력 결정부를 포함하는 것을 특징으로 하는 장치. And a pressure determining portion that determines the pressure in the chamber based on the measured admittance.
  2. 제 1 항에 있어서,The method of claim 1,
    상기 측정된 어드미턴스 및 상기 결정된 압력에 기초하여 상기 사용자의 고막 상태 정보를 생성하는 고막 상태 정보 생성부를 더 포함하는 것을 특징으로 하는 장치. And a tympanic state information generating unit for generating the tympanic state information of the user based on the measured admittance and the determined pressure.
  3. 제 2 항에 있어서, The method of claim 2,
    상기 고막 상태 정보는 상기 고막의 휨 정도, 상기 고막이 현재 정상 상태인지 여부, 상기 고막의 현재 상태에 대응하는 압력의 범위, 위험 정도 중 적어도 하나 이상을 포함하는 것을 특징으로 하는 장치. The tympanic condition information includes at least one of a degree of warpage of the tympanic membrane, whether the tympanic membrane is currently in a normal state, a pressure range corresponding to a current state of the tympanic membrane, and a degree of danger.
  4. 제 3 항에 있어서,The method of claim 3, wherein
    상기 고막 상태 정보 생성부는 상기 측정된 어드미턴스가 최대 어드미턴스인 경우, 상기 고막의 상태를 정상 상태인 것으로 상기 고막 상태 정보를 생성하고, 상기 측정된 어드미턴스가 최소 어드미턴스이고, 상기 고막 내부와 외부에서의 압력 차가 기 설정 기 설정된 범위를 벗어나는 경우, 상기 고막의 상태가 위험한 상태인 것으로 상기 고막 상태 정보를 생성하는 것인, 장치. When the measured admittance is the maximum admittance, the tympanum state information generating unit generates the tympanum state information as the normal state of the eardrum, and the measured admittance is the minimum admittance, and the pressure inside and outside the tympanic membrane. And if the difference is outside a preset range, generating the eardrum state information that the state of the eardrum is in a dangerous state.
  5. 제 1 항에 있어서, The method of claim 1,
    상기 측정부는 상기 결정된 압력에 대응하는 제 2 어드미턴스를 측정하되, The measuring unit measures a second admittance corresponding to the determined pressure,
    상기 압력 결정부는 상기 어드미턴스 및 상기 제 2 어드미턴스에 기초하여 상기 압력을 갱신하는 것을 특징으로 하는 장치. And the pressure determiner updates the pressure based on the admittance and the second admittance.
  6. 제 5 항에 있어서,The method of claim 5, wherein
    상기 측정부는 상기 결정된 압력에 기초하여 상기 챔버 내 압력이 가압되는 경우, 상기 고막에서의 제 2 어드미턴스를 측정하되, The measuring unit measures a second admittance in the eardrum when the pressure in the chamber is pressurized based on the determined pressure,
    상기 압력 결정부는 상기 측정된 제 2 어드미턴스가 최대값을 갖는 경우, 상기 측정된 어드미턴스에 대응하는 압력에 상기 제 2 어드미턴스에 대응하는 압력을 더하여 상기 압력을 갱신하는 것을 특징으로 하는 장치. And when the measured second admittance has a maximum value, the pressure determining unit updates the pressure by adding a pressure corresponding to the second admittance to a pressure corresponding to the measured admittance.
  7. 제 1 항에 있어서, The method of claim 1,
    상기 결정된 압력에 기초하여 상기 챔버 내 압력을 조절하는 압력 조절부를 더 포함하는 것을 특징으로 하는 장치.And a pressure regulator for adjusting the pressure in the chamber based on the determined pressure.
  8. 제7 항에 있어서, The method of claim 7, wherein
    상기 압력은 상기 사용자에게 가압 가능한 가압 압력이되, The pressure is a pressurized pressure that can be pressurized to the user,
    상기 압력 결정부는 상기 측정된 어드미턴스가 최대인 경우, 상기 챔버 내의 현재 압력을 상기 가압 압력으로 결정하고, The pressure determining unit determines the present pressure in the chamber as the pressurized pressure when the measured admittance is maximum,
    상기 압력 조절부는 상기 측정된 어드미턴스가 최소인 상기 고막 내부와 외부에서의 압력 차가 기 설정 기 설정된 범위를 벗어나는 경우, 상기 챔버 내의 압력을 감압하는 것을 특징으로 하는 장치. The pressure adjusting unit may reduce the pressure in the chamber when the pressure difference between the inside and the outside of the tympanic membrane where the measured admittance is minimum is out of a predetermined range.
  9. 제 8 항에 있어서, The method of claim 8,
    상기 측정된 어드미턴스 및 상기 결정된 압력에 기초하여 상기 어드미턴스가 최대가 되도록 유도하는 안내 정보를 생성하는 안내 정보 생성부를 더 포함하는 것을 특징으로 하는 장치.And a guide information generator configured to generate guide information for guiding the admittance to a maximum based on the measured admittance and the determined pressure.
  10. 제 1 항에 있어서,The method of claim 1,
    상기 측정부는 상기 수신된 반사파를 소정 주파수 통과 대역을 가지는 필터에 통과시키고, 푸리에 고속변환(FFT)하여 상기 수신된 반사파에 포함된 노이즈를 제거하여, 상기 반사파 중 사운드에 대응하는 성분을 측정하는 것을 특징으로 하는 장치.The measurement unit passes the received reflected wave through a filter having a predetermined frequency pass band, removes noise included in the received reflected wave by performing Fourier fast transform (FFT), and measures a component corresponding to sound among the reflected waves. Characterized in that the device.
  11. 제 1 항에 있어서, The method of claim 1,
    상기 측정된 어드미턴스를 외부의 다른 장치로 전송하는 통신부를 더 포함하고,Further comprising a communication unit for transmitting the measured admittance to another external device,
    상기 압력 결정부는 상기 전송된 상기 어드미턴스에 대응하여 상기 외부의 다른 장치로부 터 수신된 제어 명령에 기초하여 상기 압력을 결정하는 것을 특징으로 하는 장치. And the pressure determiner determines the pressure based on a control command received from another external device in response to the transmitted admittance.
  12. 챔버의 압력을 결정하는 장치에 있어서, In the apparatus for determining the pressure of the chamber,
    소정 주파수 대역의 사운드를 상기 챔버 내부의 사용자의 고막에 지향하여 출력하는 스피커;A speaker for directing and outputting sound of a predetermined frequency band to a user's eardrum in the chamber;
    상기 사용자의 고막에서 반사된 반사파를 수신하는 마이크;A microphone for receiving the reflected wave reflected from the eardrum of the user;
    상기 출력된 사운드의 크기 및 상기 반사파 중 상기 사운드에 대응하는 성분의 크기에 기초하여 상기 사용자의 고막에서의 어드미턴스를 측정하는 측정부; A measuring unit measuring an admittance in the eardrum of the user based on the magnitude of the output sound and the magnitude of a component corresponding to the sound among the reflected waves;
    상기 챔버 내의 압력을 결정하는 압력 결정부; 및 A pressure determination unit determining a pressure in the chamber; And
    상기 측정된 어드미턴스 및 상기 결정된 압력에 기초하여 상기 사용자의 고막 상태 정보를 생성하는 고막 상태 정보 생성부를 포함하는 장치. And a tympanum state information generating unit generating the tympanic state information of the user based on the measured admittance and the determined pressure.
  13. 챔버의 압력을 결정하는 방법에 있어서, In the method of determining the pressure of the chamber,
    소정 주파수 대역의 사운드를 상기 챔버 내부의 사용자의 고막에 지향하여 출력하는 단계;Directing and outputting sound of a predetermined frequency band to the eardrum of the user inside the chamber;
    상기 사용자의 고막에서 반사된 반사파를 수신하는 단계;Receiving a reflected wave reflected from the eardrum of the user;
    상기 출력된 사운드의 크기 및 상기 반사파 중 상기 사운드에 대응하는 성분의 크기에 기초하여 상기 사용자의 고막에서의 어드미턴스를 측정하는 단계 및 Measuring an admittance in the eardrum of the user based on the magnitude of the output sound and the magnitude of a component corresponding to the sound among the reflected waves; and
    상기 측정된 어드미턴스에 기초하여 상기 챔버 내의 압력을 결정하는 단계를 포함하는 것을 특징으로 하는 방법.Determining the pressure in the chamber based on the measured admittance.
PCT/KR2017/015671 2017-01-02 2017-12-28 Device and method for determining pressure in chamber, for high pressure oxygen treatment WO2018124783A1 (en)

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