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WO1994009695A1 - Laryngoscope a emission lumineuse et appareil stroboscopique d'examen du larynx - Google Patents

Laryngoscope a emission lumineuse et appareil stroboscopique d'examen du larynx Download PDF

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Publication number
WO1994009695A1
WO1994009695A1 PCT/JP1993/001033 JP9301033W WO9409695A1 WO 1994009695 A1 WO1994009695 A1 WO 1994009695A1 JP 9301033 W JP9301033 W JP 9301033W WO 9409695 A1 WO9409695 A1 WO 9409695A1
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WO
WIPO (PCT)
Prior art keywords
light
laryngoscope
emitting
mirror
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1993/001033
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English (en)
Japanese (ja)
Inventor
Takao Kanbe
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU45853/93A priority Critical patent/AU4585393A/en
Publication of WO1994009695A1 publication Critical patent/WO1994009695A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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 light-emitting laryngoscope and a stoma-type laryngeal observation device that accurately illuminate the larynx of a subject 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 placed in a supine position, a normal test 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 bulb, which is opposite to the handle 3 A miniature bulb 8 is attached to the connection part of the mirror 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 observe vocal cord movements by stroboscopy.
  • 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 cord 6 is strobed, so that when the endoscope 13 provided in the middle of the optical fiber 12 is used, the movement of the vocal cord 6 is apparently stopped or observed as a slow movement close to it. can do. That is, as shown in FIG.
  • the image of the vocal cord 6 observed by the endoscope 13 is composed of the periodic points 15a, 15b, 15c, 1 of the vibration waveform 15 of the vocal cord 6.
  • 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 light-emitting laryngoscope apparatus that solves the technical problems of the conventional example.
  • one configuration of the present invention includes a half mirror, a reflecting mirror arranged to define a closed room between the half mirror, a light source arranged in the sealed room, and the half mirror or the reflecting mirror.
  • a light-emitting laryngoscope apparatus having a main body attached and fixed to a mirror;
  • Other configurations of the present invention include a light emitting laryngoscope apparatus using a power supply for the light source as an external power supply, and a light emitting laryngoscope apparatus using a power supply for the light source as a battery-type built-in power supply.
  • a strobe-type laryngeal observation device includes a control device that receives a signal, outputs a signal for strobe light emission of a predetermined frequency corresponding to the frequency, and supplies the signal to the light-emitting laryngoscope apparatus.
  • the present invention provides a solid and transparent laryngoscope main body having at least a light exit surface and a main body portion for guiding light from an external light source, and a half attached to the light exit surface of the main body.
  • a light-emitting laryngoscope apparatus comprising a mirror and a mirror surface layer formed on the outer surface of the body other than the half mirror portion and reflecting light to guide the light toward one direction of the half mirror.
  • a half mirror is attached to a light emitting portion of a hollow laryngoscope main body, an optical fiber is inserted into the main body instead of the mirror surface layer on the outer surface of the main body, and light from an external light source is transmitted to the light source.
  • a light-emitting laryngoscope apparatus configured to be guided into the main body by a fiber, reflected inside the main body, and guided to a half mirror. The invention's effect
  • 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 source is hermetically sealed in a closed room, even if the laryngoscope is disinfected with alcohol after the inspection, the light source and other electrical components will not be damaged.
  • the power source is a battery-powered built-in power source, portability is improved and operability is also improved.
  • Flash light is guided from an external light source through an optical fiber to the solid laryngoscope body with a mirror surface layer, and emitted through a half mirror.
  • a more powerful strobe light emitter can be provided as an external light source instead of a miniature bulb, and accurate and reliable vocal cord observation can be performed.
  • the laryngoscope body is solid, the laryngoscope body is more compact than a hollow laryngoscope body that contained a light source such as a miniature bulb and required a sealing function on the body. This eliminates the need for the seal configuration, simplifying the configuration and reducing the cost.
  • 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 view of observing the movement of the vocal cords by conventional stroboscopy
  • Fig. 5 generally shows the principle of observing vocal cord movement by stroboscopy.
  • FIG. 6 is a view of observing a subject's vocal cords using the first embodiment of the light-emitting laryngoscope apparatus of the present invention
  • FIG. 7 is a perspective view of the light-emitting laryngoscope apparatus shown in FIG. 6,
  • FIG. 8 is an enlarged longitudinal sectional view of a main part of the light-emitting laryngoscope apparatus shown in FIG. 6,
  • FIG. 9 is an exploded perspective view of a main part of the light-emitting laryngoscope shown in FIG. 6,
  • FIG. 10 is a side view showing a second embodiment of the light-emitting laryngoscope apparatus of the present invention in partial cross-section,
  • FIG. 11 is a view of observing the movement of the vocal cords by stroboscopy using the light emitting laryngoscope apparatus of the present invention
  • FIG. 12 is an enlarged longitudinal sectional view showing a modification of the main part of the light-emitting laryngoscope apparatus shown in FIG. 8,
  • FIG. 13 is an enlarged longitudinal sectional view of a main part of a third embodiment of the light-emitting laryngoscope apparatus of the present invention.
  • FIG. 14 is a modification of the light-emitting laryngoscope apparatus shown in FIG. It is a principal part enlarged longitudinal cross-sectional view which shows.
  • FIG. 15 is an enlarged longitudinal sectional view of a main part showing another modification of the light-emitting laryngoscope apparatus shown in FIG.
  • the light-emitting laryngoscope device 21 shown in FIGS. 6 and 7 has a closed chamber 2 surrounded by a reflecting mirror 24 and a half mirror 25 at the tip of a handle 23 extending freely from the main body 22. 6 is formed.
  • the miniature bulb 27 provided in the sealed room 26 is connected to a commercial AC power source installed at an appropriate place in the examination room through a power cord 28 extending through the handle 23 and the main body 22. Alternatively, it is connected to an external power supply (not shown) such as a stabilized DC power supply.
  • the handle 23 is housed in the main body part 22 so as to be extendable and contractible, and the extension length is fixed by an adjusting screw 29.
  • 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 from the miniature bulb 27 provided at the focal position of the paraboloid is reflected by the light reflecting surface and then radiated forward as almost parallel light, and the parallel light and the miniature bulb 27 emit light.
  • the direct light is irradiated forward.
  • the half mirror 25 has a half-mirror coating on its outer surface and an anti-reflection coating on its inner surface, and transmits light from the rear while transmitting light from the front, as is called a transflective mirror. Has the function of reflecting. Therefore, the light emitted from the miniature bulb 27 passes through the half mirror 25 and is irradiated forward.
  • a blind 30 for blocking light transmission is provided at the base of the half-mirror 25, to prevent light from leaking along the handle 23 to the opposite side of the miniature bulb 27.
  • the examiner feels the light from the miniature bulb 27 dazzling.
  • 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 light-emitting laryngoscope device 21 When using the light-emitting laryngoscope device 21, as shown in FIG. 6, turn on the power switch (not shown) of the external power supply, and turn on the miniature bulb 27. Then, the body part 22 is grasped firmly and inserted into the oral cavity from the distal end side of the device, and the larynx is illuminated. This and In this case, the light emitted from the miniature bulb 27 passes through the half mirror 25 together with the light reflected by the reflector 24 and the direct light to illuminate the vocal cords 6. The illuminated vocal cord 6 image is reflected by the half mirror 25 and enters the examiner's field of view, where necessary inspections are performed.
  • the light-emitting laryngoscope apparatus 21 has a miniature bulb 27 stored in a closed chamber 26, and has a blind 30 As the examiner is shut off, the examiner will never feel dazzled and can concentrate on the examination.
  • the closed chamber 26 has a sealing function, moisture or breath in the throat enters the closed chamber 26 and adversely affects the electric systems such as the miniature bulb 27 and the power cord 28, and the half mirror. There is no fogging inside of 25.
  • the sealing function also protects the inside of the device 21 when it is cleaned with rubbing alcohol after use. In addition, the cleaning operation is simple because it is only necessary to wipe the entire surface with gauze or the like soaked in an alcohol solution.
  • the reflector 24 and the half-mirror 25 are gradually heated from the inside by the heat generated by the miniature bulb 27. Since there is about twice that of, 9, there is no danger that only a part of the body 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 kind of the power cord 28 that is connected to the external power supply is not required, and the power cord can be handled freely as long as it does not get in the way, and at the same time, the portability is improved.
  • the light emitting laryngoscope apparatus 21 described above can be used as a stroboscopic copy.
  • the micro pressure applied to the subject's throat The control device 45 turns on / off the external power supply, that is, the miniature bulb power supply, in synchronization with the vibration of the vocal cords detected by the phone 10.
  • the miniature bulb 27 flashes strobely in accordance with the movement of the vocal cords, and the intermittently illuminated vibrations of the 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.
  • FIG. 12 is a modified example of the embodiment shown in FIG. 8.
  • the half mirror 25 and the blind 30 are flush with each other.
  • a blind 30 that blocks light at the base of the half mirror 25 is adhered to the lower end of the half mirror 25 from the rear side to secure the supporting strength of the half mirror 25.
  • FIG. 13 shows a third embodiment of the light-emitting laryngoscope apparatus of the present invention.
  • This light-emitting laryngoscope device 61 has an earpick-like shape integrally formed of a solid main body portion 62 a having a shape suitable for grasping and a solid distal head portion 62 b having a light emitting surface. It has a solid laryngoscope body 62.
  • the laryngoscope body 62 is formed by casting using a transparent material such as glass or acrylic so as to guide light from an external light source.
  • the molded and transparent solid laryngoscope main body 62 gold, silver, aluminum, or the like is deposited or coated except for the light incident surface and the light output surface, and reflects light toward the inside of the main body.
  • a mirror layer 63 is formed.
  • the laryngoscope body 62 is formed of glass, the mirror surface layer 63 may be omitted if the total reflection function of the glass is properly used.
  • a half-mirror 64 is formed by attaching a dielectric multilayer film to the light exit surface on the front surface of the head 6 2 b of the laryngoscope body 62, and the light incident surface at the lower end of the body portion 62 a is provided.
  • An optical fiber cable 65 serving as an optical transmission path to an external light source is connected.
  • the optical fiber cable 65 covers the optical fiber 65b with a cable sheath 65a made of synthetic resin.
  • the distal end (light emitting end) of the optical fiber 65b is incident on the laryngoscope body 62.
  • Laryngoscope by joining a part of outer skin 65 a to mirror surface layer 63 Connected to body 62.
  • An illumination light source or a strobe light emitter (not shown) is connected as an external light source to an end (light incident end) of the optical fiber cable 65. Similar to the case shown in FIG. 4, this strobe light emitter emits a strobe light in synchronization with the vibration detected by a microphone (not shown) pressed against the subject's throat. Strobe light blinking at 400 to 500 Hz is transmitted by the optical fiber cable 65 and emitted into the laryngoscope body 62.
  • Illumination light (during normal laryngeal examination) or strobe light (during vocal fold vibration examination) emitted from the end of the optical fiber 65b into the laryngoscope body 62 is used for the solid body of the laryngoscope body 62. After proceeding straight through 62 a, the light is reflected by the arc-shaped portion of the mirror layer 63 of the solid distal head 62 b and further passes through the half mirror 64 to be projected to the larynx or especially to the vocal cords.
  • a large-sized strobe light bulb with high power can be used as the strobe light source in the strobe light emitter, which is compared to a method in which a miniature bulb is driven to blink.
  • a clearer strobe image can be obtained, and the durability and reliability are excellent.
  • the laryngoscope body 62 is formed by casting using glass or acrylic, it can be repeatedly molded using a ⁇ type, and a cost reduction effect by mass production can be expected.
  • the laryngoscope body 62 is solid, the laryngoscope body is smaller than a hollow laryngoscope body that stores miniature bulbs, as compared with a body that required a sealing function.
  • the structure Since there is no need to provide a sealing function to the structure 2, the structure is simplified by that much, and it is almost maintenance-free and can be used stably for a long period of time. In addition, only a part of the laryngoscope body 62 is locally heated, so that the subject is not burned.
  • FIG. 14 shows a modification of the embodiment of FIG. 13, and the same parts as those of FIG. 13 are denoted by the same reference numerals.
  • the optical fiber cable 65 is connected to the lower end of the main body portion 62 a of the laryngoscope body 62, but the light emitting laryngoscope shown in FIG. In the device 6 ⁇ , near the lower end of the solid body 6 2 a of the solid laryngoscope body 6 2
  • the metal cylinder 66 is integrally connected, and the lower cylinder 67 accommodating the miniature bulb 68 and the battery 69 is screwed into this cylinder 66.
  • the battery 69 is pressed against the miniature bulb 68 via the panel by the lid 70. According to this, compared to the embodiment of FIG. 13, an optical fiber leading to an external light source is not required, so that the optical fiber does not interfere and the portability is improved.
  • the miniature bulb 68 is a tip head 6 2 b of the laryngoscope body 62.
  • the thickness dimension a of the tip head 62 b can be made thinner by the absence of the miniature bulb 68, so the laryngoscope The operation of moving and changing the position of the main body 62 in the throat becomes easy.
  • the solid laryngoscope body 62 may be removed and a simple hollow metal structure may be used as shown in FIG. 8 or FIG. According to this, the light from the miniature bulb 68 is guided through the hollow structure and emitted from the half mirror 64.
  • FIG. 15 shows another modification of the embodiment of FIG.
  • the optical fiber cable 65 is connected to the lower end of the solid body portion 62 a of the laryngoscope body 62, but the light-emitting laryngoscope shown in FIG.
  • the hollow laryngoscope main body ⁇ 2 has a hollow main body portion 7 2a composed of a metal or glass tube, and an optical fiber cable 75 (the jacket 75a and the light
  • the optical fiber 75b (comprising the fiber 75b) may be introduced.
  • the optical fiber 75b is inserted deep into the body part 72a of the laryngoscope body ⁇ 2, and strobe light is emitted inside the hollow head part 72b bonded to the body part 72a by bonding.
  • the inner surface of the head 72b is formed by depositing or coating gold, silver, or aluminum to form the mirror surface layer 73, the illumination light emitted from the tip of the optical fiber 75b (normal larynx)
  • the flash light (during the examination) or the strobe light (during the vocal fold examination) is reflected by the mirror surface layer 73, passes through the half mirror 74, and is emitted outside the laryngoscope body 72.
  • This embodiment also has the same effect as the embodiment of FIG.
  • the hollow head 7 2 b is adhered to the portion 7 2 a to form the head mirror body 7 2, and the mirror layer 7 3 is applied only to the inner surface of the head 7 2 b.
  • the application area is smaller than that of, and the cost can be reduced accordingly.
  • the optical fiber 75b is inserted deep into the main body portion 72a, but the optical fiber 75b is stopped until it enters the middle of the hollow main body portion 72a or near the lower end. It is also possible.

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  • 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)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)

Abstract

Dans le laryngoscope à émission lumineuse ci-décrit, un réflecteur (24) est utilisé pour délimiter une chambre hermétique (26) entre le réflecteur et un miroir semi-réfléchissant (25), et une source lumineuse (27) dans la chambre hermétique (26) de façon à émettre la lumière de manière autonome. La réflexion de la lumière dans un chemin optique allant de la source lumineuse (27) à l'÷il du practicien ne doit se produire qu'une fois. Etant donné que ce laryngoscope ne dépend pas d'une source lumineuse externe, il peut être utilisé aisément même par une personne peu expérimentée, et permet l'examen des cordes vocales (6) d'une personne gisant sur le dos. La chaleur émise par la source lumineuse (27) s'accumule dans la chambre hermétique (26) et empêche toute condensation sur le miroir semi-réfléchissant (25). Les composants électriques, tels que la source lumineuse (27), qui sont enfermés dans la chambre hermétique (26), ne sont pas endommagés lorsqu'on désinfecte à l'alcool la totalité du laryngoscope après un contrôle. La chaleur dégagée par la source lumineuse (27) est répartie et transmise de manière homogène au miroir semi-réfléchissant (25) et au réflecteur (24), ce qui évite tout risque qu'un échauffement local puisse provoquer une brûlure du larynx.
PCT/JP1993/001033 1992-10-30 1993-07-23 Laryngoscope a emission lumineuse et appareil stroboscopique d'examen du larynx Ceased WO1994009695A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU45853/93A AU4585393A (en) 1992-10-30 1993-07-23 Light-emitting laryngoscope and stroboscopic larynx inspection apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPPCT/JP92/01409 1992-10-30
PCT/JP1992/001409 WO1994009701A1 (fr) 1992-10-30 1992-10-30 Laryngoscope a eclairage autonome et dispositif stroboscopique d'examen du larynx

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WO1994009695A1 true WO1994009695A1 (fr) 1994-05-11

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

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Cited By (2)

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JP2001161640A (ja) * 1999-10-05 2001-06-19 Ethicon Endo Surgery Inc 画像センサーを一体に取り付けた外科手術装置
US6840903B2 (en) 2002-03-21 2005-01-11 Nuvista Technology Corporation Laryngoscope with image sensor

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JP3477248B2 (ja) 1994-08-30 2003-12-10 ペンタックス株式会社 電子内視鏡装置
US5667480A (en) * 1995-10-20 1997-09-16 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
IT1306199B1 (it) * 1999-01-12 2001-05-30 Giorgio Mezzoli Dispositivo per l'autovisione del condotto uditivo esterno e/o dellamembrana timpanica.
DE10317856A1 (de) 2002-04-18 2003-11-06 Atmos Medizintechnik Gmbh & Co Laryngostroboskop

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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

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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

Patent Citations (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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001161640A (ja) * 1999-10-05 2001-06-19 Ethicon Endo Surgery Inc 画像センサーを一体に取り付けた外科手術装置
US6840903B2 (en) 2002-03-21 2005-01-11 Nuvista Technology Corporation Laryngoscope with image sensor

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Publication number Publication date
WO1994009701A1 (fr) 1994-05-11
AU2805792A (en) 1994-05-24
AU4585393A (en) 1994-05-24

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