WO2014133222A1 - Système d'auscultation numérique - Google Patents

Système d'auscultation numérique Download PDF

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Publication number
WO2014133222A1
WO2014133222A1 PCT/KR2013/003704 KR2013003704W WO2014133222A1 WO 2014133222 A1 WO2014133222 A1 WO 2014133222A1 KR 2013003704 W KR2013003704 W KR 2013003704W WO 2014133222 A1 WO2014133222 A1 WO 2014133222A1
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WO
WIPO (PCT)
Prior art keywords
stethoscope
unit
digital signal
sound
output
Prior art date
Application number
PCT/KR2013/003704
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English (en)
Korean (ko)
Inventor
김규학
김원기
Original Assignee
연세대학교 원주산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 연세대학교 원주산학협력단 filed Critical 연세대학교 원주산학협력단
Publication of WO2014133222A1 publication Critical patent/WO2014133222A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B7/00—Instruments for auscultation
    • A61B7/02—Stethoscopes
    • A61B7/04—Electric stethoscopes

Definitions

  • the present invention relates to a digital stethoscope system, and more particularly, to a digital stethoscope system for outputting a stethoscope sound to a plurality of users.
  • the medical staff When a patient undergoes surgery at a medical institution or undergoes anesthesia during a procedure, the medical staff must listen to the patient's heart sound or lung sound to check from time to time whether the patient's health condition changes suddenly by surgery or anesthesia.
  • the listening of the patient's heart sound to the pulmonary sound is generally performed by a conventional stethoscope.
  • a conventional stethoscope only one medical staff using the stethoscope can check the health state of the patient and the distance from the patient. Has the disadvantage of keeping it close enough.
  • the heart sounds or lung sounds of a patient listened to by a conventional stethoscope may be mixed with noises transmitted from the inside of the body irrespective of the patient's health condition, thereby preventing the patient from checking the actual health condition.
  • an object of the present invention is to provide a digital stethoscope system that allows a plurality of users to listen at the same time.
  • a digital stethoscope system includes a stethoscope driver and a stethoscope output unit, and the stethoscope driver converts an analog vibration sound having a predetermined wavelength band into a first digital signal.
  • a stethoscope which amplifies the first digital signal and outputs the second digital signal;
  • a controller which transmits a second digital signal output from the stethoscope unit to a transmitter according to a user input;
  • a transmitter configured to transmit a second digital signal transmitted from the controller to the stethoscope output unit, wherein the stethoscope output unit comprises: a receiver configured to receive a second digital signal transmitted from the transmitter; And an output unit converting the received second digital signal into an analog signal sound and outputting the sound having a predetermined amplitude.
  • the second digital signal may be transmitted and received between the transmitter and the receiver through a wireless communication network.
  • the wireless communication network may include a Bluetooth network.
  • the stethoscope driver may further include a filter unit including at least one of a high pass filter, a low pass filter, and a digital attenuator for processing the second digital signal output from the stethoscope unit.
  • the filter unit may distinguish the heart sound and the lung sound of the subject included in the second digital signal by a combination of the high pass filter and the low pass filter.
  • the stethoscope driver may further include an input unit for controlling whether the power is applied, the stethoscope mode and the volume of the output sound.
  • the stethoscope mode may include a plurality of output modes in which the second digital signal is processed differently according to at least one of a subject's age, a physique, and a blood pressure.
  • the input unit may include at least one button unit to which an input signal is applied by contact or pressure of the user, and may have a three-dimensional shape that is larger than the stethoscope part and smaller than the size of the user's hand. have.
  • a digital stethoscope system by converting and amplifying a stethoscope sound into a digital signal, and by transmitting the amplified digital signal through a wireless communication network to output an analog sound, a plurality of other users even if the user operates the stethoscope drive unit Allow users to listen together to the subject's stethoscope.
  • the stethoscope driver and the stethoscope output unit are physically separated, the stethoscope sound can be listened to together even when the subject is far from the subject.
  • FIG. 1 is a block diagram illustrating a digital stethoscope system according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of the digital stethoscope system of FIG. 1.
  • 3A is a graph in which a subject's heart sound is received using the digital stethoscope system of FIG. 1.
  • 3B is a graph in which the sound of the subject's heart is output as sound using the digital stethoscope system of FIG. 1.
  • stethoscope driving unit 110 stethoscope
  • amplifying unit 113 A / D conversion unit
  • filter unit 121 high pass filter
  • control unit 140 input unit
  • mode adjusting unit 150 transmitting unit
  • first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.
  • the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.
  • FIG. 1 is a block diagram illustrating a digital stethoscope system according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of the digital stethoscope system of FIG. 1.
  • the digital stethoscope system 1000 includes a stethoscope driver 100 and a stethoscope output unit 200.
  • the stethoscope driving unit 100 is a part which a doctor, a nurse, etc. (hereinafter, referred to as a user) directly contact the subject's body in order to stethoscope a heart sound or a pulmonary sound of a patient, an interviewee, etc. (hereinafter, referred to as a subject). It includes a stethoscope 110, the controller 130 and the transmitter 150. In some embodiments, the stethoscope driver 100 may further include a first filter unit 120 or an input unit 140.
  • the stethoscope 110 directly contacts the subject's body and receives a vibration sound transmitted to the skin within the subject's body.
  • the vibration sound may be an analog vibration sound having a predetermined wavelength band.
  • the stethoscope 110 includes an A / D converter 113 for converting the analog vibration sound into a digital signal and a first amplifier 111 for amplifying the converted digital signal. According to an embodiment, the stethoscope 110 may further include a microphone (not shown) for receiving the analog vibration sound.
  • the stethoscope 110 may be made of metal or a material having high vibration.
  • the stethoscope 110 may have a side shape of a cone in order to easily receive the analog vibration sound of the subject.
  • the first filter unit 120 filters the digital signal output from the stethoscope unit 110.
  • the first filter unit 120 may include a high pass filter 121 for filtering a component having a high wavelength in the digital signal.
  • the first filter unit 120 may include a low pass filter 123 for filtering a component having a low wavelength in the digital signal.
  • the first filter unit 120 may include a digital attenuator 125 that reduces the digital signal to a predetermined amplitude or less.
  • the high pass filter 121 and the low pass filter 123 may be one or a plurality, respectively. In this case, the high pass filter 121 and the low pass filter 123 may be combined to distinguish the heart sound and the lung sound transmitted from the subject's body.
  • the subject's heart sound may correspond to a digital signal in a lower band than a closed sound
  • the subject's lung sound may correspond to a digital signal in a higher band than a heart sound. Therefore, due to the combination of the high pass filter 121 and the low pass filter 123, the heartbeat and the closed sound of the subject corresponding to the digital signal of the different sound range can be distinguished.
  • the controller 130 processes the digital signal received from the stethoscope 110 or the first filter 120 according to a user input.
  • the controller 130 may include, for example, a microprocessor.
  • the controller 130 may individually process the heart sound and the lung sound of the subject separated from the first filter unit 120.
  • the controller 130 may receive electric energy from a power source (not shown).
  • the input unit 140 receives a user input for auscultating a subject's heart sound or lung sound.
  • the input unit 140 may have a three-dimensional shape as a whole, larger than the stethoscope 110 and smaller than the size of the user's hand (ie, having a cross-sectional area narrower than the width of the palm).
  • the input unit 140 has a shape similar to that of a computer mouse, for example.
  • the input unit 140 may include at least one button unit receiving an input signal by a user's contact or pressure.
  • the input unit 140 may include a power button unit 141 for controlling on / off of power applied to the control unit 130 from the power source.
  • the input unit 140 is a mode adjusting unit 145 for adjusting a plurality of output modes for processing a digital signal differently according to at least one of the subject's age, physique (height, weight, etc.) and blood pressure. ) May be included.
  • the input unit 140 may include a sound control unit 143 for adjusting the volume of sound output from the output unit 240 to be described later.
  • the transmitter 150 transmits the digital signal transmitted from the controller 130 to the stethoscope output unit 200.
  • the transmitter 150 may transmit the digital signal through a wireless communication network.
  • the transmitter 150 may transmit a digital signal to the stethoscope output unit 200 through a Bluetooth network.
  • the stethoscope output unit 200 includes a receiver 210, a D / A converter 215, and an output unit 240. According to an embodiment, the stethoscope output unit 200 may further include a second amplifier 220 and a second filter 230.
  • the receiver 210 receives a digital signal transmitted from the transmitter 150.
  • the receiver 210 may include a reception antenna (not shown) that can be connected to a Bluetooth network.
  • the D / A converter 215 converts the received digital signal into an analog signal.
  • the second amplifier 220 amplifies the analog signal converted by the D / A converter 215 by a predetermined size. That is, when a digital signal is transmitted and received between the transmitter 150 and the receiver 210 through a wireless communication network, in order to compensate for the signal portion lost in the transmission and reception process, the digital signal received by the receiver 210 is converted.
  • the amplified analog signal can be amplified again by a predetermined amount.
  • the second filter unit 230 filters the amplified analog signal. Similar to the first filter unit 120, the second filter unit 230 may include at least one of a high pass filter, a low pass filter, and a digital attenuator. In addition, the second filter unit 230 may include a noise removing filter (not shown) that removes components having a frequency that is not related to the actual heart sound or the closed sound. Alternatively, according to an embodiment, the second filter unit 230 may include one or a plurality of high pass filters and a low pass for distinguishing and outputting the heart and lung sounds of the subject in the same manner as the first filter unit 120. It can include a combination of filters.
  • the output unit 240 outputs an analog signal converted by the D / A converter 215 or a signal filtered by the second filter unit 230 as a sound having a predetermined amplitude.
  • the stethoscope output unit 200 is illustrated as an external speaker having two speakers in FIG. 2, this is merely an example, and the stethoscope output unit 200 may have an earphone shape that can be worn on a user's ear.
  • the stethoscope output unit 200 may be a conventional Bluetooth earphone.
  • 3A is a graph in which a subject's heart sound is received using the digital stethoscope system of FIG. 1.
  • 3B is a graph in which the sound of the subject's heart is output as sound using the digital stethoscope system of FIG. 1.
  • the user makes the stethoscope 110 of the stethoscope driver 100 contact the subject's body, for example, the breast. Subsequently, the user applies power to the stethoscope driver 100 through the power button unit 141 included in the input unit 140 of the stethoscope driver 100. In addition, while holding the input unit 140 in one hand, from the first portion to the second portion of the front chest of the subject, the stethoscope 110 moves slowly so as to maintain a contact state while the heartbeat or the lung sound of the subject To receive. In this case, the user may adjust the mode adjusting unit 145 to properly filter or amplify the received heart sound or lung sound in consideration of the age, the physique, and the blood pressure of the subject.
  • the heart rate of the subject received by the stethoscope 110 may appear as shown in FIG. 3A. That is, as shown in FIG. 3A, the subject's heart rate may be received by the stethoscope 110 in the form of a vibration sound having some peaks among irregular vibrations.
  • the analog vibration sound transmitted through the subject's skin is converted into a digital signal by the stethoscope unit 110, the controller 130, and the transmitter 150 of the stethoscope driver 100, and is output through a Bluetooth network. It is received by the receiving unit 210 of the unit 200. At this time, the digital signal received by the receiver 210 is amplified and filtered again, and is output as an acoustic signal having a predetermined amplitude by the output unit 240.
  • the output sound signal may be, for example, shown in FIG. 3B. That is, as shown in FIG. 3B, the acoustic signal output from the output unit 240 may be a vibration sound having substantially the same waveform as the heartbeat of FIG. 3A but having only an amplitude. For example, the acoustic signal may be output as a sound having an appropriately large amplitude so that a plurality of users who are placed in a constant space, such as an operating room, can listen to the stethoscope sound at the same time.
  • the digital stethoscope system by converting and amplifying a stethoscope sound into a digital signal, and transmitting the amplified digital signal through a wireless communication network to output an analog sound, one user to operate the stethoscope drive unit In some cases, a plurality of other users may be together to listen to the subject's stethoscope.
  • the stethoscope driver and the stethoscope output unit are physically separated, the stethoscope sound can be listened to together even when the subject is far from the subject.
  • the present invention can be applied to the stethoscope art for listening to vibration sounds transmitted from inside the body of a subject.

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

Abstract

La présente invention concerne un système d'auscultation numérique comprenant un dispositif d'attaque d'auscultation et un dispositif de sortie d'auscultation. Le dispositif d'attaque d'auscultation comprend : une unité d'auscultation permettant de recevoir un son de vibration analogique possédant une bande de longueur d'onde prédéfinie pour convertir le son de vibration analogique reçu en un premier signal numérique, puis d'amplifier le premier signal numérique pour sortir un second signal numérique ; une unité de commande permettant d'émettre le second signal numérique sorti de l'unité d'auscultation vers une unité d'émission en fonction d'une entrée d'un utilisateur ; et l'unité d'émission permettant d'émettre le second signal numérique émis par l'unité de commande vers l'unité de sortie d'auscultation. Le dispositif de sortie d'auscultation comprend : une unité de réception permettant de recevoir le second signal numérique émis par l'unité d'émission ; et une unité de sortie permettant de convertir le second signal numérique reçu en un son de signal analogique de façon à sortir le son possédant l'amplitude prédéfinie.
PCT/KR2013/003704 2013-02-27 2013-04-30 Système d'auscultation numérique WO2014133222A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0020841 2013-02-27
KR1020130020841A KR101303613B1 (ko) 2013-02-27 2013-02-27 디지털 청진 시스템

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WO2014133222A1 true WO2014133222A1 (fr) 2014-09-04

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010097170A (ko) * 2000-04-20 2001-11-08 서정주 전자 청진기
KR100669532B1 (ko) * 2005-03-24 2007-01-15 썬메디텍 (주) 유에스비디지털청진기
KR100789705B1 (ko) * 2007-02-05 2008-01-03 동진메디칼 주식회사 다기능 디지털 청진기를 이용한 무선 청진 시스템
KR20110047181A (ko) * 2011-04-19 2011-05-06 문종섭 블루투스 통신을 사용한 무선 전자 청진기

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010097170A (ko) * 2000-04-20 2001-11-08 서정주 전자 청진기
KR100669532B1 (ko) * 2005-03-24 2007-01-15 썬메디텍 (주) 유에스비디지털청진기
KR100789705B1 (ko) * 2007-02-05 2008-01-03 동진메디칼 주식회사 다기능 디지털 청진기를 이용한 무선 청진 시스템
KR20110047181A (ko) * 2011-04-19 2011-05-06 문종섭 블루투스 통신을 사용한 무선 전자 청진기

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