WO1994009701A1 - Laryngoscope a eclairage autonome et dispositif stroboscopique d'examen du larynx - Google Patents

Laryngoscope a eclairage autonome et dispositif stroboscopique d'examen du larynx

Info

Publication number
WO1994009701A1
WO1994009701A1 PCT/JP1992/001409 JP9201409W WO9409701A1 WO 1994009701 A1 WO1994009701 A1 WO 1994009701A1 JP 9201409 W JP9201409 W JP 9201409W WO 9409701 A1 WO9409701 A1 WO 9409701A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
self
mirror
light
laryngoscope
Prior art date
Application number
PCT/JP1992/001409
Other languages
English (en)
Japanese (ja)
Inventor
Takao Kanbe
Original Assignee
Takao Kanbe
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takao Kanbe filed Critical Takao Kanbe
Priority to PCT/JP1992/001409 priority Critical patent/WO1994009701A1/fr
Priority to AU28057/92A priority patent/AU2805792A/en
Priority to PCT/JP1993/001033 priority patent/WO1994009695A1/fr
Priority to AU45853/93A priority patent/AU4585393A/en
Publication of WO1994009701A1 publication Critical patent/WO1994009701A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/267—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes
    • A61B1/2673—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes for monitoring movements of vocal chords

Definitions

  • the present invention relates to a self-luminous laryngoscope and a spout laryngeal observation device that accurately illuminate a subject's larynx so that vocal cords and the like can be accurately observed without skill.
  • a laryngoscope 1 shown in FIG. 1 is a medical device for observing a subject's vocal cords in combination with a forehead mirror 2.
  • the laryngoscope 1 has a handle 3 having a length inserted into the throat of a subject, and a coin dog reflecting mirror 4 inclined at an appropriate angle fixed to the tip of a handle 3.
  • the light emitted by the freely illuminating light source 5 in the examination room is received by the frame mirror 2 mounted on the head of the examiner, guided into the subject's mouth, and further inserted into the mouth. It is reflected again by the reflector 4 and illuminates the vocal cords 6.
  • the image of the vocal cords 6 illuminated by light is reflected by the reflector 4 and then passes through the central hole 2a of the forehead mirror 2 and enters the examiner's view.
  • the examiner must use a gauze 14 to pull the tongue of the subject that interferes with the examination forward and operate the laryngoscope 1 with the free hand.
  • a slight optical path shift causes image skipping. Therefore, considerable skill is required to adjust the angles of both the forehead mirror 2 and the laryngoscope 1 to an angle suitable for the examination and to properly capture the image of the vocal cord 6.
  • the examiner himself has a drawback in that the glare received from the light source 5 hinders the clear vision of the observation target. Furthermore, even if a patient, such as a bedridden patient, is to be examined while lying on his or her back, a normal inspection cannot be performed without the help of a fiberscope or the like, because a proper inspection system and light source cannot be obtained. Met. Another problem is that the laryngoscope 1 is liable to be clouded by the subject's exhalation, and has to be wiped off whenever the reflecting surface becomes cloudy, resulting in poor inspection efficiency.
  • FIG. 2 shows a conventional laryngoscope 7 with a light bulb, in which a miniature light bulb 8 is attached to the connection between the handle 3 and the reflector 4. Since the miniature bulb 8 illuminates the vocal cords 6 directly from above, the lighting environment of the vocal cords 6 and its surroundings is remarkably improved.
  • the miniature bulb 8 is mounted in an exposed manner, the light enters the examiner's eyes, and there is a problem in glare.
  • the laryngoscope 7 is cleaned with alcohol for disinfecting after use, the miniature bulb 8 and its lead wire are easily damaged by alcohol, shortening the life of electrical components, and have a drawback that alcohol cleaning is not possible.
  • Other cleaning methods have the problem that cleaning takes too long.
  • the reflector 4 is locally heated by the heat generated by the miniature bulb 8, the intensively heated portion of the reflector 4 may touch the larynx and cause burns to the subject.
  • the heated reflector 4 is convenient for eliminating cloudiness due to exhalation, since the miniature bulb 8 itself is not sealed, heat dissipation to the surroundings is remarkable, and clouding is eliminated. There was a problem that the effect was limited.
  • a laryngoscope 9 with a light bulb in which a miniature bulb 8 is attached to the tip of the reflector 4 instead of the connection between the handle 3 and the reflector 4 is also known.
  • laryngoscopes are also used for vocal cord examinations, which use stroboscopy to observe vocal cord movements.
  • the stroboscopic copy presses the microphone 10 against the subject's throat, and the vibration of the electrically picked-up vocal cords, for example, about 400 Hz, is generated by the stroboscopic light. 1 and the light emitted from the tip of the optical fiber 1 2 is synchronized with the vibration of the vocal cords 6 and blinks.
  • the vocal cords 6 are illuminated by a strobe light, so that when the endoscope 13 provided in the middle of the optical fiber 12 is viewed, the movement of the vocal cords 6 is apparently stopped or observed as a slow movement close to it. can do.
  • the image of the vocal cord 6 observed by the endoscope 13 is composed of the periodic points 15 a, 15 b, and 15 c 15 of the vibration waveform 15 of the vocal cord 6.
  • the flash fires intermittently only in the case of d Open 6a, medium open 6b, slightly open 6c, fully closed 6d, and vocal cord movement as a whole can be observed as a slow-motion strobe image.
  • conventional stroboscopy since the optical fiber 12 is inserted through the nostril into the throat, the subject who is stimulated by the nasal mucosa has considerable pain, and the endoscope 13 has a large field of view. There was a drawback that the whole area was difficult to observe due to the small range.
  • An object of the present invention is to provide a self-luminous laryngoscope apparatus which solves the technical problems of the above conventional example.
  • one configuration of the present invention includes a half mirror, a reflecting mirror arranged to define a tightly closed room between the half mirror, a light source arranged in the closed room, the half mirror or the reflecting mirror.
  • the present invention relates to a self-luminous laryngoscope apparatus including a grip portion attached to and fixed to a mirror.
  • Other configurations of the present invention include a self-luminous laryngoscope apparatus using a power supply for a light source as an external power supply, and a self-luminous laryngoscope apparatus using a battery-type built-in power supply for a light source.
  • the present invention provides a device arranged at a position where the vocal cords can be observed by the self-luminous laryngoscope device, a microphone pressed against the larynx to detect the frequency of the vocal cords, and a signal of the vocal cord frequency. And a controller for outputting a strobe light emission signal of a predetermined frequency corresponding to the frequency and supplying the signal to the self-emission laryngoscope apparatus.
  • the light is reflected only once by the half mirror, so the operation of the laryngoscope is easy and no skill is required for the inspection.
  • the light from the light source illuminates the vocal cords, but does not reach the examiner's eyes, so that the examiner is not obstructed by the glare.
  • the power source is a battery-powered built-in power source, portability is improved and operability is also improved.
  • Fig. 1 is a view of observing the subject's vocal cords using a conventional external light source type laryngoscope and a forehead mirror,
  • FIG. 2 is a perspective view showing an example of a conventional laryngoscope with a light bulb
  • FIG. 3 is a perspective view showing an example of a laryngoscope with a bulb in which a miniature bulb light source is attached to the tip of a reflector,
  • Fig. 4 is a diagram of observing vocal cord movement by conventional stroboscopy
  • Fig. 5 is a diagram generally showing the principle of observing vocal cord movement by stroboscopy
  • FIG. 6 is a view of observing the vocal cords of a subject using the first embodiment of the self-luminous laryngoscope apparatus of the present invention
  • FIG. 7 is a perspective view of the self-luminous laryngoscope apparatus shown in FIG. 6,
  • FIG. 8 is an enlarged vertical sectional view of a main part of the self-luminous laryngoscope shown in FIG. 6,
  • FIG. 9 is an exploded perspective view of a main part of the self-luminous laryngoscope shown in FIG. 6,
  • FIG. 10 is a side view partially showing a second embodiment of the self-luminous laryngoscope apparatus of the present invention.
  • FIG. 11 is a view of observing the movement of the vocal cords by stroboscopy using the self-luminous laryngoscope apparatus of the present invention.
  • the self-luminous laryngoscope apparatus 21 shown in FIGS. 6 and 7 is a closed chamber surrounded by a reflecting mirror 24 and a half mirror 25 at the tip of a handle 23 extending freely from the inside of the gripping part 22. 26 is formed. Further, the miniature bulb 27 provided in the sealed room 26 is connected to a commercial AC power supply or a DC power supply installed at a suitable place in the examination room via a power cord 28 extending through the handle 23 and the gripping portion 22. Connected to an external power supply (not shown) such as a stabilized power supply. The handle 23 is accommodated in the grip portion 22 so as to be extendable and contractible, and the extension length is fixed by an adjusting screw 29. As shown in FIG.
  • the reflecting mirror 24 forms a paraboloid and is curved, and its inner surface is a light reflecting surface. For this reason, the light emitted by the miniature bulb 27 provided at the focal position of the paraboloid is reflected by the light reflecting surface and then irradiated forward as substantially parallel light, and the parallel light and the miniature bulb 27 emit light.
  • the direct light is irradiated forward.
  • the half mirror 25 has an outer surface coated with a half mirror and an inner surface coated with an anti-reflection coating, and transmits light from the rear while reflecting light from the front as a semi-transmissive mirror is called. Has functions. Therefore, the light emitted from the miniature ball 27 passes through the half mirror 25 and is irradiated forward.
  • a blind 30 for blocking light transmission is provided to prevent light from leaking along the handle 23 to the opposite side of the miniature bulb 27. Therefore, there is no problem that the examiner dazzles the light from the miniature bulb 27.
  • the half mirror 25 and the reflecting mirror 24 are tightly adhered to each other at an outer peripheral portion of the elliptical reflecting mirror 24 to form a unit 32.
  • the unit 32 is screw-fitted to the outer periphery of the miniature bulb holding portion 31 at the tip of the handle 23 via a sealing O-ring (not shown) or the like. For this reason, when the miniature bulb 27 is cut, the miniature bulb 27 may be replaced after turning the unit 32 in the direction in which the screw is loosened to remove it from the tip of the handle 23.
  • the self-luminous laryngoscope device 21 When using the self-luminous laryngoscope device 21, turn on the power switch (not shown) of the external power source and turn on the miniature bulb 27 as shown in FIG. And the gripper 2 Hold 2 firmly and insert it into the oral cavity from the distal end of the device to illuminate the larynx. At this time, the light emitted from the miniature bulb 27, both the light reflected by the reflecting mirror 24 and the direct light, passes through the half mirror 25 and illuminates the vocal cords 6. The illuminated image of the vocal cord 6 is reflected by the half mirror 25 into the field of view of the examiner, and the necessary examination is performed.
  • the self-luminous laryngoscope apparatus 21 has a miniature bulb 27 stored in a closed chamber 26, and blindly irradiates the examiner with light. Since the 0 is blocked, the examiner does not feel any dazzling and can concentrate on the examination. Also, even if the self-luminous laryngoscope device 21 is used and then cleaned with alcohol for disinfecting, the miniature bulb 27 and the power cord 28 do not come into contact with the alcohol, only the half mirror 25 and the reflector. Only the exposed parts, such as 24 or handle 23, are subject to disinfection and do not shorten the life of electrical components. In addition, the cleaning operation is also easy because it is only necessary to wipe the entire surface with a gauze soaked in an alcohol solution.
  • the reflecting mirror 24 and the half mirror 25 are gradually heated from the inside by the heat generated by the miniature bulb 27, but the heat dissipation area of both can be calculated simply by using the conventional laryngoscope with a light bulb. Since there is about twice as large as, 9, there is no danger that only a part will be heated and burn the subject's larynx. Further, since the uniformly heated half mirror 25 is hardly clouded by the exhalation, the image of the vocal cord 6 reflected by the half mirror 25 is not clouded.
  • the power supply of the miniature bulb 27 was used as an external power supply.
  • Several batteries 43 may be incorporated in 2.
  • Reference numeral 4 denotes a lid that can be attached and detached when replacing the battery. At the same time, the lid is turned on and clicked to turn on or off the miniature bulb.
  • the above-mentioned self-luminous laryngoscope device 21 can be used as a stroboscopic device.
  • the control device 45 synchronizes with the vibration of the vocal cords detected by the microphone mouth phone 10 pressed against the subject's throat, Turn the miniature bulb power on and off.
  • the miniature bulb 27 flashes strobe-like in accordance with the movement of the vocal cords, and the vibration of the intermittently illuminated vocal cords can be observed as a strobe image.
  • unlike conventional stroboscopy there is no need to insert an optical fiber 12 or the like through the nostril of the subject, so that the subject does not feel pain and the examination is quick and easy. It is possible.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Pulmonology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Physiology (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)

Abstract

Laryngoscope à éclairage autonome, dans lequel un rétroréflecteur (24) est agencé de manière qu'il délimite avec un miroir semi-réfléchissant (25) une chambre hermétique (26) dans laquelle est montée une source lumineuse (27) dont la lumière n'est réfléchie qu'une seule fois par le miroir semi-réfléchissant (25) sur la trajectoire qu'elle suit entre la source lumineuse et l'÷il de l'opérateur. Grâce à l'absence d'une source lumineuse extérieure, le maniement ne présente aucune difficulté même pour une personne sans formation spéciale, et l'examen des cordes vocales (6) est possible lorsque le sujet est couché sur le dos. La chaleur dégagée par la source lumineuse (27) s'accumule dans la chambre hermétique (26) et peut donc empêcher toute condensation sur le miroir semi-réfléchissant (25). En outre, puisque la source lumineuse (27) est enfermée dans la chambre hermétique (26), on peut, après l'examen, stériliser l'ensemble du dispositif avec de l'alcool sans abîmer les composants électriques tels que la source lumineuse (27). La chaleur dégagée par la source lumineuse (27) se disperse et est transférée à la fois au miroir semi-réfléchissant (25) et au rétroréflecteur (24), ce qui évite tout risque de brûlures dues à un échauffement localisé.
PCT/JP1992/001409 1992-10-30 1992-10-30 Laryngoscope a eclairage autonome et dispositif stroboscopique d'examen du larynx WO1994009701A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP1992/001409 WO1994009701A1 (fr) 1992-10-30 1992-10-30 Laryngoscope a eclairage autonome et dispositif stroboscopique d'examen du larynx
AU28057/92A AU2805792A (en) 1992-10-30 1992-10-30 Self-luminous laryngoscope and stroboscopic larynx inspection device
PCT/JP1993/001033 WO1994009695A1 (fr) 1992-10-30 1993-07-23 Laryngoscope a emission lumineuse et appareil stroboscopique d'examen du larynx
AU45853/93A AU4585393A (en) 1992-10-30 1993-07-23 Light-emitting laryngoscope and stroboscopic larynx inspection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1992/001409 WO1994009701A1 (fr) 1992-10-30 1992-10-30 Laryngoscope a eclairage autonome et dispositif stroboscopique d'examen du larynx

Publications (1)

Publication Number Publication Date
WO1994009701A1 true WO1994009701A1 (fr) 1994-05-11

Family

ID=14042633

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP1992/001409 WO1994009701A1 (fr) 1992-10-30 1992-10-30 Laryngoscope a eclairage autonome et dispositif stroboscopique d'examen du larynx
PCT/JP1993/001033 WO1994009695A1 (fr) 1992-10-30 1993-07-23 Laryngoscope a emission lumineuse et appareil stroboscopique d'examen du larynx

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP1993/001033 WO1994009695A1 (fr) 1992-10-30 1993-07-23 Laryngoscope a emission lumineuse et appareil stroboscopique d'examen du larynx

Country Status (2)

Country Link
AU (2) AU2805792A (fr)
WO (2) WO1994009701A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5725479A (en) * 1995-10-20 1998-03-10 Ethicon Endo-Surgery, Inc. Method and devices for endoscopic vessel harvesting
US5741132A (en) * 1996-03-13 1998-04-21 Usui Kokusai Sangyo Kaisha Ltd. Mirror for dental examination
US5902315A (en) * 1997-08-28 1999-05-11 Ethicon Endo-Surgery, Inc. Optical tissue dissector/retractor
US5922004A (en) * 1997-08-28 1999-07-13 Ethicon Endo-Surgery, Inc. Method for performing optical tissue dissection/retraction
US6193653B1 (en) 1998-02-06 2001-02-27 Ethicon Endo-Surgery, Inc. Methods and devices for visualizing, dissecting and harvesting vessels and the like
JP2002534202A (ja) * 1999-01-12 2002-10-15 メッツォーリ ジョルジオ 耳の自己検査装置
DE20321679U1 (de) 2002-04-18 2008-11-13 Atmos Medizintechnik Gmbh & Co. Laryngostroboskop

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139489A (en) * 1999-10-05 2000-10-31 Ethicon Endo-Surgery, Inc. Surgical device with integrally mounted image sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6187532A (ja) * 1984-10-05 1986-05-02 旭光学工業株式会社 喉頭ストロボスコ−プ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5496287A (en) * 1978-01-14 1979-07-30 Asahi Optical Co Ltd Larynx strobescope
JPS63130001U (fr) * 1987-02-17 1988-08-25
JPH0467833A (ja) * 1990-07-09 1992-03-03 Sadajiro Sano 照明付検査鏡
JPH04132532A (ja) * 1990-09-26 1992-05-06 Dainippon Printing Co Ltd デンタルミラーおよびその製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6187532A (ja) * 1984-10-05 1986-05-02 旭光学工業株式会社 喉頭ストロボスコ−プ

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5725479A (en) * 1995-10-20 1998-03-10 Ethicon Endo-Surgery, Inc. Method and devices for endoscopic vessel harvesting
US5741132A (en) * 1996-03-13 1998-04-21 Usui Kokusai Sangyo Kaisha Ltd. Mirror for dental examination
US5902315A (en) * 1997-08-28 1999-05-11 Ethicon Endo-Surgery, Inc. Optical tissue dissector/retractor
US5922004A (en) * 1997-08-28 1999-07-13 Ethicon Endo-Surgery, Inc. Method for performing optical tissue dissection/retraction
US6193653B1 (en) 1998-02-06 2001-02-27 Ethicon Endo-Surgery, Inc. Methods and devices for visualizing, dissecting and harvesting vessels and the like
JP2002534202A (ja) * 1999-01-12 2002-10-15 メッツォーリ ジョルジオ 耳の自己検査装置
DE20321679U1 (de) 2002-04-18 2008-11-13 Atmos Medizintechnik Gmbh & Co. Laryngostroboskop

Also Published As

Publication number Publication date
AU2805792A (en) 1994-05-24
WO1994009695A1 (fr) 1994-05-11
AU4585393A (en) 1994-05-24

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