US3598113A - Disposable laryngoscope construction - Google Patents

Disposable laryngoscope construction Download PDF

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Publication number
US3598113A
US3598113A US3598113DA US3598113A US 3598113 A US3598113 A US 3598113A US 3598113D A US3598113D A US 3598113DA US 3598113 A US3598113 A US 3598113A
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Prior art keywords
handle
light
blade
unit
lamp
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Expired - Lifetime
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William C Moore
William S Pilgrim
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Welch Allyn Inc
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Welch Allyn Inc
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/267Instruments 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/00103Constructional details of the endoscope body designed for single use
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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 with illuminating arrangements
    • A61B1/07Instruments 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 with illuminating arrangements using light-conductive means, e.g. optical fibres

Abstract

A disposable laryngoscope having a unitary plastic blade and handle. The handle is hollow and in use contains a light unit having batteries, a lamp and an operating switch. The light unit is not disposable and is removed for reuse before the blade and handle assembly is thrown away. The disposable part of the instrument includes a fiber optic bundle which carries light from the lamp within the handle to a point near the distal end of the blade.

Description

SESO QqZ SF? i KR 39598;].13 l

unlleu ma [72] Inventors Skaneatelm;

William S. Pilgrim, Port Byron, both 01, N.Y. 1211 Appl. No. 766,157 [22] Filed Oct. 9.1968 [451 Patented Aug. 10,1971 1731 Assignee Welch Allyn, Inc.

Sltlneatlles Falk, N.Y.

[54] DISPOSAilLE LARYNGOSCOPE CONSTRUCTION 2 Chlme, 10 Drawing Figs.

[52] U.S.Cl. 128/11, 128/397 [51] lnt.C1. A6111 1/26, A61b 1/06, A61b 1/24 [50] FleldolSeareh 128/6,10,

11,16, 23, 9,115.18, 22, 7, 8, 395, 396, 397, 398; 240/1 EL 2.18, 2 M

SEARCH ROOM [56] References Cited UNITED STATES PATENTS 2,885,537 5/1959 Wood,lr. 128/16X 3,384,076 5/1968 Speelman... 128/9 2.358.867 9/1944 Madan 240/1 El UX 3,016,785 1/1962 K'apany 240/1 ElX 3,417,746 12/1968 Moore etal. 128/6 3,426,749 2/1969 .lephcott 128/11 Primary Examiner-Richard A. Gaudet Assistant Examiner-Channing L. Pace Attorney-Burns & Jenny ABSTRACT: A disposable laryngoscope having a unitary plastic blade and handle, The handle is hollow and in use contains a light unit having batteries, a lamp and an operating switch. The light unit is not disposable and is removed for reuse before the blade and handle assembly is thrown away. The disposable part of the instrument includes a fiber optic bundle which carries light from the lamp within the handle to a point near the distal end of the blade.

I, I I, II

PATENTEDwmonsn mm 1 or 2 INVENTOES.

WILLIAM c. MOORE WILLIAM s. PILGRIM PATENTED AUG] men 3,598,113

sum 2 OF 2" DISPOSABLE LARYNGOSCOPE CONSTRUCTION BACKGROUND OF THE INVENTION This invention relates generally to medical instruments, and has particular reference to a disposable laryngoscope having a novel construction. I I

A layrngoscope, like any other instrument that enters a body cavity, must be sterilized after each use. This is usually accomplished by autoclaving and this operation has become increasingly expensive due to ever-increasing labor costs. Thus, autoclaving requires that a nurse, technician or other attendant pick up the instrument after use by the doctor, take it to the autoclave, perhaps give it a preliminary cleaning or washing, place the instrument in the autoclave and then after an interval take it out again, etc. Obviously, if the autoclave itself must be started up and turned off after each use, the operation takes even more time. In short, sterilizing an instrument has become so expensive that whenever an instrument can be produced cheaply enough it is more economical to use -a new one each time than to sterilize to permit reuse.

In addition to the expense and bother of having to continually autoclave the relatively costly, permanent type of laryngoscope, most of these instruments in common use employ as a light source a lamp that is located near the distal end of the blade. This has the advantage of placing the light source close to the area being examined or treated, but is disadvantageous in that having a lamp in the patients mouth is undesirable because of heat and the possibility of breakage. Also, locating the lamp at or near the distal end of the laryngoscope blade limits the size ofthe lamp that can be used and thus the amount of light output.

SIJM MARY OF THE INVENTION The laryngoscope of the prcsenl'invention is comprised of two principal parts: a blade and handle unit that is disposable and a light unit that is not. The blade and handle are preferably made, of plastic. The handle is hollow and is adapted to receive with a free sliding fit the light unit which is not unlike a penlight and comprises a lamp, batteries and an operating switch in a cylindrical case.

The light unit is releasably held in the laryngoscope handle by a screwcap that engages the handle open end and can be turned to operate the light unit switch. A preformed bundle of light transmitting optical fibers is carried by the blade and handle unit to conduct light from the light unit lamp within the handle to a point near the distal end ofthe blade.

Because of its molded plastic construction, the blade and The fiber bundle eliminates the heat problem caused by a I lamp at the distal end of a blade and is, of course. far safer. The fiber bundle also permits a larger lamp to be used since the lamp is in the handle rather than on the blade, and the available light can he used more cfficiently.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 8 is a transverse sectional view taken on line 8-8 of FIG. 1;

FIG. 9 is a fragmentary front elevation ofa modified form of the disposable laryngoscope; and

FIG. 10 is a transverse sectional view taken on line 10-10 of FIG. 9

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to thedrawings, wherein like reference numbers designate the same part in each of the views, 10 generally indicates the blade and handle unit of the laryngoscope of the invention. This unit comprises a blade 11 and a tubular handle 12 that are integrally connected to provide a one piece or unitary structure. In the embodiment disclosed, the blade and handle are molded ofa suitable plastic material.

The blade 11 is connected to the closed end 14 of the handle and includes a spatula portion 15, a flange portion 16 and a rounded tip 17. The longitudinal axis of the spatula is curved adjacent the handle and then has a substantially straight portion 18 extending to the tip. The flange 16 is connected to one side edge of the spatula and is disposed at right angles to the transverse axis thereof. A subfiange 20 is formed on the outer edge of the flange 16, the transverse axis of the subfiange being substantially perpendicular to the plane of flange 16 and parallel to the transverse axis ofthe spatula.

The end of handle 12 opposite the blade is open, and a closure is provided in the form of a cap 21 that is adapted to be threaded onto the handle. A battery pack-lamp unit, generally indicated at 22 in FIG. 6, is insertable with a sliding fit in the hollow handle, the unit being maintained in the handle by the cap 21. The battery pack-lamp unit, also referred to herein as simply the light unit, comprises a cylindrical metal casing 24, a lamp 25, a pushbutton switch 26 and batteries (not shown) that are contained withing the housing.

The light unit 22 is constructed and operates essentially like a flashlight or penlight and is not considered to be novel per se. The operating switch 26 is normally spring biased outwardly into an open circuit position. When the switch is pushed inwardly, a circuit is completed through the batteries, lamp, casing, switch and back to the batteries. When the light unit is mounted in the instrument handle, the switch 26 can be actuated to turn the lamp on or off by turning the cap 21 a few degrees in either direction.

When the light unit is inserted in the handle 12, a shoulder 27 on the unitabuts against a shoulder 28 in the handle interior and the lamp 25 is received in a reduced diameter portion 30 of the interior. Light from the lamp is conducted from within the handle to a point near the distal or tip end of the blade by means of a bundle 31 of optical fibers or filaments, the fibers beingofakno wn clad glass or plastic type. Fiber bundle 31 may be preformed by securing the fibers together in the configuration shown in FIG. I, and the opposite ends of the bundles may be optically ground and polished.

One end ofthe fiber bundle is substantially cylindrical and is received in a cylindrical opening 32 in the closed end ofthe instrument handle, the opening communicating with the portion 30 of the handle interior so that the bundle receives substantially all of the light that emanates from the light unit lamp 25. The opposite end of the bundle has an oval or rectangular cross section so that it offers a minimum amount of interference to viewing or instrumentation. This end of the bundle terminates at a point between the midlength point ofthe blade and its distal end and is held in position by small lugs 34, FIGS. 1 and 8, integral with the blade. As indicated in FIG. 3, above the opening 32 at the closed end of the handle the bundle bends toward the blade flange 16 so that from that point to its distal end substantially all ofthe bundle is positioned beneath and protected by the subfiange 20.

To use the lzgynwopc, the light unit 22 is inserted in the handle and ca?) ZTis engaged with the open end and turned far enough to depress the switch 26 and light the lamp 25. The light from the lamp is transmitted by the fiber bundle 31 with negligible light loss toits distal end from which the light emerges and illuminates the field being examined and/or treated. After use, the light unit is removed from the handle and put aside and the blade and handle unit, including its fiber bundle, is thrown away.

The light unit, which is not disposable, need not be sterilized because it has been completely enclosed by the handle and has had no contact with the patient. Thus, the need for sterilization of any kind has been eliminated. Moreover, since the blade and handle unit is used but once, its sterile condition can be assured by shipping it from the manufacturer in such condition wrapped in a sealed package. The plastic blade of the disposable laryngoscope of thejnvention is less likely to be injurious to the patients teeth than a metal blade and, as noted above, the fiber bundle arrangement eliminates the need to locate the lamp at the distal end of the blade which is dangerous and produces heat. It was also pointed out that the fiber bundle permits the use ofa larger lamp than can be used by most conventional laryngoscopes. While only one blade shape has been disclosed, it will be apparent that the blade and handle unit can be produced with a variety of blade shapes and sizes for different specific uses ofthe instrument.

FIGS. 9 and 10 illustrate a slightly modified form of the invention wherein the blade includes a wall 35 that is parallel to the flange l6 and spaced therefrom to provide an enclosure for the fiber bundle 31'. With this arrangement, the only part of the bundle that is exposed is the light emitting distal end indicated at 36 in H0. 9.

From the foregoing description it will be apparent that the invention provides a novel and highly useful laryngoscope construction which ensures maximum cleanliness and is economical and convenient to use. As will be understood by those familiar with the art, the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed are, therefore, to'be considered in all respects as illustrative rather than restrictive, the scope of the invention being indicated by the appended claims.

What we claim is:

l. In combination with a nondisposable light unit having a power source, lamp and operating switch: a disposable laryngoscope comprising a hollow elongated handle, a blade integrally connected to one end of the handle, and extending therefrom in substantially right angular relationship and of such length as to extend into a larynx being examined, said handle being open at its opposite end, the handle and blade being of a unitary plastic construction, the light unit being fully enclosed with a free slidingfit in the handle, a closure member threaded on the open end of the handle to releasably hold the light unit therein, the closure member coacting with the light unit switch whereby rotation of the former actuates the latter, and a bundle oflight transmitting clad optical fibers extending from a point inside the handle adjacent the light unit lamp to a point spaced therefrom near the distal end of the blade.

2. An instrument as defined in claim 1 wherein said blade includes a flange a portion of which overlies the optical fiber bundle.

Claims (2)

1. In combination with a nondisposable light unit having a power source, lamp and operating switch: a disposable laryngoscope comprising a hollow elongated handle, a blade integrally connected to one end of the handle, and extending therefrom in substantially right angular relationship and of such length as to extend into a larynx being examined, said handle being open at its opposite end, the handle and blade being of a unitary plastic construction, the light unit being fully enclosed with a free sliding fit in the handle, a closure member threaded on the open end of the handle to releasably hold the light unit therein, the closure member coactinG with the light unit switch whereby rotation of the former actuates the latter, and a bundle of light transmitting clad optical fibers extending from a point inside the handle adjacent the light unit lamp to a point spaced therefrom near the distal end of the blade.
2. An instrument as defined in claim 1 wherein said blade includes a flange a portion of which overlies the optical fiber bundle.
US3598113A 1968-10-09 1968-10-09 Disposable laryngoscope construction Expired - Lifetime US3598113A (en)

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Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766909A (en) * 1971-07-20 1973-10-23 A Ozbey Laryngoscope with disposable blade and light guide
US3771514A (en) * 1971-06-29 1973-11-13 Concept Laryngoscope
US3826248A (en) * 1971-09-21 1974-07-30 G Gobels Laryngoscope
US3943920A (en) * 1974-12-06 1976-03-16 Ronald E. Kandel Laryngoscope blade
US3986854A (en) * 1974-09-23 1976-10-19 Vicon Products Corporation Method of making autoclavable instrument with sintered fiber glass rod
US4086919A (en) * 1976-07-09 1978-05-02 Bullard James R Laryngoscope
US4306547A (en) * 1979-11-20 1981-12-22 Lowell James R Rigid fiberoptic laryngoscope
FR2505645A1 (en) * 1981-05-18 1982-11-19 Heine Optotech Gmbh Co Kg Laryngoscope
WO1983001373A1 (en) * 1981-10-16 1983-04-28 Upsher, Michael, S. A laryngoscope including a separate disposable blade and its methode of use
US4550717A (en) * 1984-04-09 1985-11-05 Karl Berger Throat examination device
US4557256A (en) * 1984-07-23 1985-12-10 Jack Bauman Examination device with an improved blade connection
US4570614A (en) * 1983-05-06 1986-02-18 Jack Bauman Laryngoscope with disposable blade and light conductor
US4573451A (en) * 1984-11-08 1986-03-04 Jack Bauman Laryngoscope blade with a bendable tip
US4583528A (en) * 1984-11-08 1986-04-22 Jack Bauman Examining device with improved optical coupling between the light source and light conductor
US4583527A (en) * 1984-12-24 1986-04-22 Musicant Belmont S Disposable cushioning device for a laryngoscope
US4607623A (en) * 1984-11-08 1986-08-26 Jack Bauman Unitary insert support frame for the handle of an examining device
US4669449A (en) * 1986-02-18 1987-06-02 Jack Bauman Submergible laryngoscope metallic housing for fiber optics power source
US4679547A (en) * 1986-02-19 1987-07-14 Jack Bauman Fluid submersible laryngoscope
US4694822A (en) * 1986-04-01 1987-09-22 Jack Bauman Submergible laryngoscope battery housing
US4905669A (en) * 1987-09-28 1990-03-06 James R. Bullard Laryngoscope
US4947829A (en) * 1988-05-10 1990-08-14 Bullard James R Modular blade laryngoscope
US5003963A (en) * 1987-09-28 1991-04-02 James Roger Bullard Laryngoscope
US5095888A (en) * 1990-07-09 1992-03-17 Circon Corporation Intubating stylet for a laryngoscope
US5261392A (en) * 1992-04-03 1993-11-16 Achi Corporation Laryngoscope with interchangeable fiberoptic assembly
US5277173A (en) * 1992-10-09 1994-01-11 Fred Cantele Chemiluminiscent disposable laryngoscope
US5501651A (en) * 1994-06-13 1996-03-26 Bauman; Jack Fluid submersible laryngoscope preventing electrolytic current flow
US5575758A (en) * 1994-10-17 1996-11-19 Vital Signs, Inc. Laryngoscope blade
US5643221A (en) * 1990-05-04 1997-07-01 Bullard; James Roger Controlled targeting laryngoscope
US5772581A (en) * 1997-04-22 1998-06-30 Gaines; James F. Penlight laryngoscope
US5800342A (en) * 1994-03-18 1998-09-01 Lee; Jai S. Method of endotracheal intubation
US5879304A (en) * 1993-11-12 1999-03-09 Truphatek International Ltd. Single use laryngoscope blade
US6217514B1 (en) * 1999-02-05 2001-04-17 Gruhan Technologies, Inc. Laryngoscope
US6623425B2 (en) 2001-07-23 2003-09-23 Cartledge Medical Products, Llc Modified laryngoscope blade to reduce dental injuries during intubation
EP1481631A1 (en) * 2003-05-28 2004-12-01 Heine Optotechnik GmbH & Co. KG Laryngoscope handle
FR2870105A1 (en) * 2004-05-12 2005-11-18 Gilles Ayoun Laryngoscope for medically examining larynx of patient, has end cover integrated to tongue-depressor blade and presenting length intended to serve as handle for laryngoscope and to completely house elongated box
US20060189847A1 (en) * 2003-02-11 2006-08-24 Anaesthesia Airways Pty Limited Single use laryngoscope
FR2887754A1 (en) * 2005-06-30 2007-01-05 Gilles Ayoun Laryngoscope
US20070129606A1 (en) * 2004-02-29 2007-06-07 Eugeny Pecherer Metal laryngoscope blade
US20070213594A1 (en) * 2006-03-08 2007-09-13 Nguyen Nghia X Laryngoscope for intubation and method of use
US20080004498A1 (en) * 2004-11-23 2008-01-03 Eugeny Pecherer Handheld Penknife-Like Laryngoscope
US20080177147A1 (en) * 2007-01-24 2008-07-24 Jonathan Simons Laryngoscope
US20090187078A1 (en) * 2006-04-27 2009-07-23 Colin Dunlop Light source apparatus
US20090271286A1 (en) * 1996-01-22 2009-10-29 Commerce Technology Licensing, L.L.C. Method and system for customizing marketing services on networks communicating with hypertext tagging conventions
US20100022843A1 (en) * 2007-03-11 2010-01-28 Eugeny Pecherer Laryngoscopes and rechargeable illumination units for use therewith
US20100036204A1 (en) * 2008-08-05 2010-02-11 Fridolin Anders Laryngoscope Spatula
US20100041953A1 (en) * 2004-02-29 2010-02-18 Truphatek International Ltd., Metal laryngoscope blade with illumination assembly
US20110060190A1 (en) * 2007-08-07 2011-03-10 Truphatek International Ltd. Laryngoscope apparatus with enhanced viewing capability
US20110245805A1 (en) * 2010-04-05 2011-10-06 Intuitive Surgical Operations, Inc. Curved cannula
US20120029293A1 (en) * 2010-07-30 2012-02-02 Vasan Nilesh R Disposable, Self-Contained Laryngoscope and Method of Using Same
GB2497349A (en) * 2011-12-09 2013-06-12 Intersurgical Ag Laryngoscope with moulded cover
US8512234B2 (en) 2011-04-07 2013-08-20 Truphatek International Ltd. Laryngoscope assembly with enhanced viewing capability
US20140228645A1 (en) * 2013-02-13 2014-08-14 Idean Ahmad Pourshams Laryngoscope blade
WO2014150077A2 (en) * 2013-03-15 2014-09-25 Lucent Medical Systems, Inc. Partially disposable endoscopic device
US20140316206A1 (en) * 2010-07-30 2014-10-23 Nilesh R. Vasan Disposable, self-contained laryngoscope and method of using same
US20140336466A1 (en) * 2008-10-30 2014-11-13 Indian Ocean Medical Inc. Guiding device for use with laryngoscope

Families Citing this family (2)

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DE3119725C2 (en) * 1981-05-18 1983-02-24 Heine Optotechnik Gmbh & Co Kg, 8036 Herrsching, De
GB2533158B (en) * 2014-12-12 2017-02-22 Tsai Yih-Chiou Laryngoscope handle

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US3417746A (en) * 1968-02-27 1968-12-24 Welch Allyn Inc Illuminating endoscope with disposable elements
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US2358867A (en) * 1942-01-13 1944-09-26 Edward K Madan Flashlight
US2885537A (en) * 1955-05-26 1959-05-05 Jr Elwood S Wood Illuminated surgical and dental instruments
US3016785A (en) * 1957-05-20 1962-01-16 Narinder S Kapany Method and means for transmitting images through a bundle of transparent fibers
US3426749A (en) * 1965-05-20 1969-02-11 Longworth Scient Instr Co Ltd Disposable cover for laryngoscope blade
US3384076A (en) * 1966-11-14 1968-05-21 Propper Mfg Co Inc Otoscope head
US3417746A (en) * 1968-02-27 1968-12-24 Welch Allyn Inc Illuminating endoscope with disposable elements

Cited By (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771514A (en) * 1971-06-29 1973-11-13 Concept Laryngoscope
US3766909A (en) * 1971-07-20 1973-10-23 A Ozbey Laryngoscope with disposable blade and light guide
US3826248A (en) * 1971-09-21 1974-07-30 G Gobels Laryngoscope
US3986854A (en) * 1974-09-23 1976-10-19 Vicon Products Corporation Method of making autoclavable instrument with sintered fiber glass rod
US3943920A (en) * 1974-12-06 1976-03-16 Ronald E. Kandel Laryngoscope blade
US4086919A (en) * 1976-07-09 1978-05-02 Bullard James R Laryngoscope
US4306547A (en) * 1979-11-20 1981-12-22 Lowell James R Rigid fiberoptic laryngoscope
FR2505645A1 (en) * 1981-05-18 1982-11-19 Heine Optotech Gmbh Co Kg Laryngoscope
WO1983001373A1 (en) * 1981-10-16 1983-04-28 Upsher, Michael, S. A laryngoscope including a separate disposable blade and its methode of use
US4570614A (en) * 1983-05-06 1986-02-18 Jack Bauman Laryngoscope with disposable blade and light conductor
US4550717A (en) * 1984-04-09 1985-11-05 Karl Berger Throat examination device
US4557256A (en) * 1984-07-23 1985-12-10 Jack Bauman Examination device with an improved blade connection
US4607623A (en) * 1984-11-08 1986-08-26 Jack Bauman Unitary insert support frame for the handle of an examining device
US4583528A (en) * 1984-11-08 1986-04-22 Jack Bauman Examining device with improved optical coupling between the light source and light conductor
US4573451A (en) * 1984-11-08 1986-03-04 Jack Bauman Laryngoscope blade with a bendable tip
US4583527A (en) * 1984-12-24 1986-04-22 Musicant Belmont S Disposable cushioning device for a laryngoscope
US4669449A (en) * 1986-02-18 1987-06-02 Jack Bauman Submergible laryngoscope metallic housing for fiber optics power source
US4729367A (en) * 1986-02-18 1988-03-08 Jack Bauman Submergible laryngoscope with handle fluid sealing means
US4679547A (en) * 1986-02-19 1987-07-14 Jack Bauman Fluid submersible laryngoscope
US4694822A (en) * 1986-04-01 1987-09-22 Jack Bauman Submergible laryngoscope battery housing
US4905669A (en) * 1987-09-28 1990-03-06 James R. Bullard Laryngoscope
US5003963A (en) * 1987-09-28 1991-04-02 James Roger Bullard Laryngoscope
US4947829A (en) * 1988-05-10 1990-08-14 Bullard James R Modular blade laryngoscope
US5643221A (en) * 1990-05-04 1997-07-01 Bullard; James Roger Controlled targeting laryngoscope
US5095888A (en) * 1990-07-09 1992-03-17 Circon Corporation Intubating stylet for a laryngoscope
US5261392A (en) * 1992-04-03 1993-11-16 Achi Corporation Laryngoscope with interchangeable fiberoptic assembly
US5277173A (en) * 1992-10-09 1994-01-11 Fred Cantele Chemiluminiscent disposable laryngoscope
US5879304A (en) * 1993-11-12 1999-03-09 Truphatek International Ltd. Single use laryngoscope blade
US5800342A (en) * 1994-03-18 1998-09-01 Lee; Jai S. Method of endotracheal intubation
US5840013A (en) * 1994-03-18 1998-11-24 Lee; Jai S. Method of introducing a tubular member at a site in the body
US5501651A (en) * 1994-06-13 1996-03-26 Bauman; Jack Fluid submersible laryngoscope preventing electrolytic current flow
US5575758A (en) * 1994-10-17 1996-11-19 Vital Signs, Inc. Laryngoscope blade
US20090271286A1 (en) * 1996-01-22 2009-10-29 Commerce Technology Licensing, L.L.C. Method and system for customizing marketing services on networks communicating with hypertext tagging conventions
US5772581A (en) * 1997-04-22 1998-06-30 Gaines; James F. Penlight laryngoscope
US6217514B1 (en) * 1999-02-05 2001-04-17 Gruhan Technologies, Inc. Laryngoscope
US6623425B2 (en) 2001-07-23 2003-09-23 Cartledge Medical Products, Llc Modified laryngoscope blade to reduce dental injuries during intubation
US20040034281A1 (en) * 2001-07-23 2004-02-19 Richard Cartledge Modified laryngoscope blade to reduce dental injuries during intubation
US7044910B2 (en) 2001-07-23 2006-05-16 Cartledge Medical Products, Inc. Modified laryngoscope blade to reduce dental injuries during intubation
US7878973B2 (en) * 2003-02-11 2011-02-01 Anaesthesia Airways Pty Limited Single use laryngoscope
US20060189847A1 (en) * 2003-02-11 2006-08-24 Anaesthesia Airways Pty Limited Single use laryngoscope
EP1481631A1 (en) * 2003-05-28 2004-12-01 Heine Optotechnik GmbH & Co. KG Laryngoscope handle
US20100041953A1 (en) * 2004-02-29 2010-02-18 Truphatek International Ltd., Metal laryngoscope blade with illumination assembly
US20070129606A1 (en) * 2004-02-29 2007-06-07 Eugeny Pecherer Metal laryngoscope blade
US7736304B2 (en) 2004-02-29 2010-06-15 Truphatek International Ltd. Metal laryngoscope blade
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Also Published As

Publication number Publication date Type
DE1937817B2 (en) 1971-03-18 application
GB1229690A (en) 1971-04-28 application
DE6929423U (en) 1973-07-05 grant
DE1937817A1 (en) 1970-04-02 application

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