US2648329A - Laryngoscope - Google Patents

Laryngoscope Download PDF

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Publication number
US2648329A
US2648329A US251883A US25188351A US2648329A US 2648329 A US2648329 A US 2648329A US 251883 A US251883 A US 251883A US 25188351 A US25188351 A US 25188351A US 2648329 A US2648329 A US 2648329A
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Prior art keywords
insulator
cap
socket
housing
laryngoscope
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Expired - Lifetime
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US251883A
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Morch Ernst Trier
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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
    • A61B1/06Instruments 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
    • A61B1/0661Endoscope light sources
    • A61B1/0669Endoscope light sources at proximal end of an endoscope

Definitions

  • the present invention relates in general to medical and surgical instruments, and it deals more particularly with laryngoscopes.
  • a feature of the invention in providing a handle capable of receiving a variety of interchangeable blades for use in larynogosccpy, and a particularly important feature lies in the arrangement ,I provide for detachably mounting the blades on the handle.
  • Another object is to provide a larynogcscope having' novel means for illuminating the interior of the throat and larynx to he examined hy the laryngoscopist.
  • blades carry no lamp bulbs or other electrical components, a factor which contributes to their economy and at the same time obviates the diniH culties which heretofore have attenfed the sterilization of such blades.
  • Another important feature resides in the manner in which I have assembled all of the electrical components, including a light source, on the handle ci my unit a compact and sturdy assembly which may readily dctached from the blades for the purpose of sterilizing the latter or for substituting one for another.
  • Still another feature lies in my arrangement for concentrating roc-using upon the parts being examined, light from light source positioned on the handle of my device and spaced at a considerable distance from said parts.
  • Another object is to provide a laryngoscroo having a compact self-contained source of elect cal power for energizing the light source, wl'ierehy the unit is portable and easily manipulated he laryngoscopist. l'n the latter co ection, e. further feature resides in the pro n of circuit controlling switch of novel cons notion.
  • Fig. 1 is a side elevational View of my laryngo scope, indicating its mode or use in connection with a diagrammatic showing or" a patient,
  • Fig. 2 is a fragmentary perspective view of the laryngoscope, illustrating a preferred form of blade and also showing the upper end or the handle upon which the blade is adapted. to be mounted,
  • Fig. 3 is an enlarged transverse cross section taken along the line 3 3 of Fig. l in the direction of the arrows,
  • Fig. el is an enlarged transverse cross section taken along the line i-li of Fig, l in the direction of the arrows, and
  • Fig. 5 is an exploded view of the major switch components of my unit.
  • the handle le of my laryngoscope comprises a tubular shell or housing which is adapted to receive a pair of dry cells I2 of the Flashlight loattery type, these being disposed end to end in a manner well known to those familiar with. the use of such cells.
  • One end of the housing is closed by a headpiecc it which is secured in place by screws i5.
  • the headpiece will be described in more detail presently but it may be noted at this point that it coin tains a socket i8 for receiving a small incandescent lamp 2Q.
  • One terminal of the lamp is in direct Contact with the headpiece and thus is connected through the headpiece to the metallic shell it; the other lamp terminal is connected by an insulated conductor (not shown) extending through the headpiece to the central post oi th upper dry cell.
  • the opposite end or the tubular housing l is internally threaded to receive a screw cap 22, the latter having an outwardly extending annular shoulder 243, which abuts against the end of the housing to limit the distance the cap can be screwed into the housing.
  • a circular well 2&5 which receives a generally disc-shaped insulator 22; as best seen in 1F ig. 5, the insulator has a pair of integral laterally spaced legs 23a adapted to seat against the bottom of the well and hold the main body or the insulator spaced above the bottom as shown in Fig. e.
  • a screw s@ extending through a central hole in the end of the cap 22 and into a threaded hole lith in the insulator holds the latter in place in the well.
  • the upper face of the insulator 23 contains a circular recess 23e in which is seated the large end or a generally conical compression spring The small end of the spring presses upwardly on the base of the lower dry cell i2 to make electrical contact therewith and also to maintain the cells in contact with one another as is well known in the art.
  • the lower end of the spring extends nally inward from the end of the rib whereby said socket is offset laterally from said shank, said socket being spaced above the level of said shank, a lamp supported in said socket and adapted to be energized by the batteries in said housing thereby to project a beam of light longitudinally of the blade along one edge thereof, said edge of the blade being turned upwardly and inwardly toward the center of the blade to form a Cshaped channel along the edge, said last channel being substantially coaxial with said lamp and socket thereby to guide the light from the lamp longitudinally of the blade toward the free end thereof and prevent the beam from spreading laterally beyond said one edge.
  • a tubular battery housing a headpiece mounted on said housing at one end thereof, said headpiece having a pair of laterally spaced ribs disposed crosswise of the axis of the housing with a trough-shaped channel between the ribs terminating at its lateral edges in undercuts running longitudinally of the confronting inner surfaces of the ribs, an elongate blade having at one end a trough-shaped shank slidably received in said channel with its opposite longitudinal edges seated against said undercuts whereby said ribs are on either side of said shank, one of said ribs extending higher above the shank than the other and also being thicker than the other rib in transverse cross section, said one rib containing a socket extending longitudinally inward from the end of the rib whereby said socket is oiset laterally from said shank, said socket being spaced above the level of said shank, a lamp supported in said socket and adapted to be energized by the batteries in said housing
  • a laryngoscope as in claim 2 having latch means for releasably securing said shank in said channel, said latch means comprising a socket extending inwardly from the channel, a detent positioned in said socket, spring means in the socket urging said detent outwardly toward said shank, and a dimple in said shank for receiving the detent.
  • a laryngoscope as in claim 2 having a cupshaped cap screw-threadedly attached to the end of the tubular battery housing opposite said headpiece, a circular insulator in said cap, means for securing said insulator to the cap in spaced relation to the base thereof, said means including spacers between the insulator and the base of the cap and a central screw extending axially from the cap and having threaded connection with the insulator for drawing same toward the base of the cap, a switch plate in the cap between the base thereof and said insulator pivoted on said screw, a spring encircling the screw between the plate and the base of the cap urging the plate against said insulator, a ring encircling said cap and rotatable thereon, means connecting said plate to said ring to turn therewith between two end positions, a coil spring mounted on said insulator to press against the end battery in said housing, and said spring having a terminal extending through the insulator in a position to be engaged by a portion of said plate in one

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

Description

E. T. MRCH Aug. 11, 1953 LARYNGOSCOPE Filed 001'.. 18. 1951 l l n Patented Aug. 11, 1953 UNITED STAT S PATENT OFFICE The present invention relates in general to medical and surgical instruments, and it deals more particularly with laryngoscopes.
It is the object of the invention, broadly speaking, to provide an improved form oi laryngoscope which is relatively simple and economical to construct and to use which is versatile and readily adapted for use with patients of all ages and sizes; which is rugged and durable; and in which the critical components may easily be sterilized, using standard equipment and techinques.
A feature of the invention in providing a handle capable of receiving a variety of interchangeable blades for use in larynogosccpy, and a particularly important feature lies in the arrangement ,I provide for detachably mounting the blades on the handle.
Another object is to provide a larynogcscope having' novel means for illuminating the interior of the throat and larynx to he examined hy the laryngoscopist. According to my invention, blades carry no lamp bulbs or other electrical components, a factor which contributes to their economy and at the same time obviates the diniH culties which heretofore have attenfed the sterilization of such blades. Another important feature resides in the manner in which I have assembled all of the electrical components, including a light source, on the handle ci my unit a compact and sturdy assembly which may readily dctached from the blades for the purpose of sterilizing the latter or for substituting one for another. Still another feature lies in my arrangement for concentrating roc-using upon the parts being examined, light from light source positioned on the handle of my device and spaced at a considerable distance from said parts.
Another object is to provide a laryngoscroo having a compact self-contained source of elect cal power for energizing the light source, wl'ierehy the unit is portable and easily manipulated he laryngoscopist. l'n the latter co ection, e. further feature resides in the pro n of circuit controlling switch of novel cons notion.
Other objects or the invention, together with additional features of novelty whereby such ob jects are achieved, will appear in the course of the following description.
In the accompanying drawings which form part of the specification and to be read in conjunction therewith, and which like reference numerals are employed to indicate 'lie parts of the various views:
Fig. 1 is a side elevational View of my laryngo scope, indicating its mode or use in connection with a diagrammatic showing or" a patient,
Fig. 2 is a fragmentary perspective view of the laryngoscope, illustrating a preferred form of blade and also showing the upper end or the handle upon which the blade is adapted. to be mounted,
Fig. 3 is an enlarged transverse cross section taken along the line 3 3 of Fig. l in the direction of the arrows,
Fig. el is an enlarged transverse cross section taken along the line i-li of Fig, l in the direction of the arrows, and
Fig. 5 is an exploded view of the major switch components of my unit.
Referring more particularly to the drawings, the handle le of my laryngoscope comprises a tubular shell or housing which is adapted to receive a pair of dry cells I2 of the Flashlight loattery type, these being disposed end to end in a manner well known to those familiar with. the use of such cells.
One end of the housing is closed by a headpiecc it which is secured in place by screws i5. The headpiece will be described in more detail presently but it may be noted at this point that it coin tains a socket i8 for receiving a small incandescent lamp 2Q. One terminal of the lamp is in direct Contact with the headpiece and thus is connected through the headpiece to the metallic shell it; the other lamp terminal is connected by an insulated conductor (not shown) extending through the headpiece to the central post oi th upper dry cell.
The opposite end or the tubular housing l is internally threaded to receive a screw cap 22, the latter having an outwardly extending annular shoulder 243, which abuts against the end of the housing to limit the distance the cap can be screwed into the housing. Within the cap there is a circular well 2&5 which receives a generally disc-shaped insulator 22; as best seen in 1F ig. 5, the insulator has a pair of integral laterally spaced legs 23a adapted to seat against the bottom of the well and hold the main body or the insulator spaced above the bottom as shown in Fig. e. A screw s@ extending through a central hole in the end of the cap 22 and into a threaded hole lith in the insulator holds the latter in place in the well.
The upper face of the insulator 23 contains a circular recess 23e in which is seated the large end or a generally conical compression spring The small end of the spring presses upwardly on the base of the lower dry cell i2 to make electrical contact therewith and also to maintain the cells in contact with one another as is well known in the art. The lower end of the spring extends nally inward from the end of the rib whereby said socket is offset laterally from said shank, said socket being spaced above the level of said shank, a lamp supported in said socket and adapted to be energized by the batteries in said housing thereby to project a beam of light longitudinally of the blade along one edge thereof, said edge of the blade being turned upwardly and inwardly toward the center of the blade to form a Cshaped channel along the edge, said last channel being substantially coaxial with said lamp and socket thereby to guide the light from the lamp longitudinally of the blade toward the free end thereof and prevent the beam from spreading laterally beyond said one edge.
2. In a laryngoscope, a tubular battery housing, a headpiece mounted on said housing at one end thereof, said headpiece having a pair of laterally spaced ribs disposed crosswise of the axis of the housing with a trough-shaped channel between the ribs terminating at its lateral edges in undercuts running longitudinally of the confronting inner surfaces of the ribs, an elongate blade having at one end a trough-shaped shank slidably received in said channel with its opposite longitudinal edges seated against said undercuts whereby said ribs are on either side of said shank, one of said ribs extending higher above the shank than the other and also being thicker than the other rib in transverse cross section, said one rib containing a socket extending longitudinally inward from the end of the rib whereby said socket is oiset laterally from said shank, said socket being spaced above the level of said shank, a lamp supported in said socket and adapted to be energized by the batteries in said housing thereby to project a beam of light longitudinally of the blade along one edge thereof, and said blade having along said one edge a light-concentrating beam guide including an upstanding longitudinal iiange positioned beside the beam to prevent same from spreading laterally beyond said one edge of the blade.
3. A laryngoscope as in claim 2 having latch means for releasably securing said shank in said channel, said latch means comprising a socket extending inwardly from the channel, a detent positioned in said socket, spring means in the socket urging said detent outwardly toward said shank, and a dimple in said shank for receiving the detent.
4. A laryngoscope as in claim 2 having a cupshaped cap screw-threadedly attached to the end of the tubular battery housing opposite said headpiece, a circular insulator in said cap, means for securing said insulator to the cap in spaced relation to the base thereof, said means including spacers between the insulator and the base of the cap and a central screw extending axially from the cap and having threaded connection with the insulator for drawing same toward the base of the cap, a switch plate in the cap between the base thereof and said insulator pivoted on said screw, a spring encircling the screw between the plate and the base of the cap urging the plate against said insulator, a ring encircling said cap and rotatable thereon, means connecting said plate to said ring to turn therewith between two end positions, a coil spring mounted on said insulator to press against the end battery in said housing, and said spring having a terminal extending through the insulator in a position to be engaged by a portion of said plate in one of said positions.
ERNST TRIER MRCH.
References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 2,070,820 Allyn Feb. 16, 1937 2,433,705 Palmeter Dec. 30, 1947 FOREIGN PATENTS Number Country Date 612,116 Great Britain Nov. 9, 1948
US251883A 1951-10-18 1951-10-18 Laryngoscope Expired - Lifetime US2648329A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812760A (en) * 1954-05-28 1957-11-12 Fred P Miller Orthopedic brace joint
US3507272A (en) * 1967-02-18 1970-04-21 Laerdal A S Laryngoscope
US3595222A (en) * 1967-06-13 1971-07-27 William Noel Vellacott Laryngoscope
US3856001A (en) * 1973-08-24 1974-12-24 O Phillips Laryngoscope blade
US3943920A (en) * 1974-12-06 1976-03-16 Ronald E. Kandel Laryngoscope blade
US4294235A (en) * 1977-11-22 1981-10-13 Karl Storz Laryngoscope
US4295465A (en) * 1980-04-03 1981-10-20 N.A.D., Inc. Laryngoscope blade
US4360008A (en) * 1980-09-02 1982-11-23 Corazzelli Jr Frank G Laryngoscope
WO1983001373A1 (en) * 1981-10-16 1983-04-28 Upsher, Michael, S. A laryngoscope including a separate disposable blade and its methode of use
US4517964A (en) * 1979-11-28 1985-05-21 Upsher Michael S Dual bladed laryngoscope
US4550717A (en) * 1984-04-09 1985-11-05 Karl Berger Throat examination device
WO1986005377A1 (en) * 1985-03-19 1986-09-25 Sun William Y Sterile disposable laryngoscope blade sheath
US4638792A (en) * 1979-12-20 1987-01-27 Burgin Kermit H Adjustable speculum with incorporated lighting system
US4697578A (en) * 1981-07-17 1987-10-06 Burgin Kermit H Acrylooptic tongue depressor and handle therefor incorporating adjustable viewing optics
US4947896A (en) * 1988-11-04 1990-08-14 Bartlett Robert L Laryngoscope
US5347995A (en) * 1993-03-25 1994-09-20 Slater William M Laryngoscope blade cover
US5772581A (en) * 1997-04-22 1998-06-30 Gaines; James F. Penlight laryngoscope
US20090171155A1 (en) * 2007-12-27 2009-07-02 Koichi Tsunoda Oral cavity insertion instrument and pharyngoscope apparatus
US20100254646A1 (en) * 2007-08-31 2010-10-07 Hans Wendeberg Bearing, and Methods of Handling the Bearing
US20100312059A1 (en) * 2007-08-28 2010-12-09 Aircraft Medical Limited Laryngoscope
US20140316206A1 (en) * 2010-07-30 2014-10-23 Nilesh R. Vasan Disposable, self-contained laryngoscope and method of using same
US9226651B2 (en) 2007-08-28 2016-01-05 Aircraft Medical Limited Laryngoscope insertion section
US10342525B2 (en) * 2016-04-23 2019-07-09 Wesley Wilson Breast retractor tool
USD876625S1 (en) 2018-08-07 2020-02-25 Adroit Surgical, Llc Laryngoscope
USD955572S1 (en) * 2017-03-13 2022-06-21 Colorado Voice Clinic, P.C. Retractor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2070820A (en) * 1933-10-06 1937-02-16 William N Allyn Laryngoscope
US2433705A (en) * 1946-07-08 1947-12-30 William N Allyn Folding laryngoscope
GB612116A (en) * 1944-11-30 1948-11-09 Otto Popper Improvements in specula

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2070820A (en) * 1933-10-06 1937-02-16 William N Allyn Laryngoscope
GB612116A (en) * 1944-11-30 1948-11-09 Otto Popper Improvements in specula
US2433705A (en) * 1946-07-08 1947-12-30 William N Allyn Folding laryngoscope

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812760A (en) * 1954-05-28 1957-11-12 Fred P Miller Orthopedic brace joint
US3507272A (en) * 1967-02-18 1970-04-21 Laerdal A S Laryngoscope
US3595222A (en) * 1967-06-13 1971-07-27 William Noel Vellacott Laryngoscope
US3856001A (en) * 1973-08-24 1974-12-24 O Phillips Laryngoscope blade
US3943920A (en) * 1974-12-06 1976-03-16 Ronald E. Kandel Laryngoscope blade
US4294235A (en) * 1977-11-22 1981-10-13 Karl Storz Laryngoscope
US4517964A (en) * 1979-11-28 1985-05-21 Upsher Michael S Dual bladed laryngoscope
US4638792A (en) * 1979-12-20 1987-01-27 Burgin Kermit H Adjustable speculum with incorporated lighting system
US4295465A (en) * 1980-04-03 1981-10-20 N.A.D., Inc. Laryngoscope blade
US4360008A (en) * 1980-09-02 1982-11-23 Corazzelli Jr Frank G Laryngoscope
US4697578A (en) * 1981-07-17 1987-10-06 Burgin Kermit H Acrylooptic tongue depressor and handle therefor incorporating adjustable viewing optics
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
WO1986005377A1 (en) * 1985-03-19 1986-09-25 Sun William Y Sterile disposable laryngoscope blade sheath
US4947896A (en) * 1988-11-04 1990-08-14 Bartlett Robert L Laryngoscope
US5347995A (en) * 1993-03-25 1994-09-20 Slater William M Laryngoscope blade cover
US5772581A (en) * 1997-04-22 1998-06-30 Gaines; James F. Penlight laryngoscope
US10194791B2 (en) 2007-08-28 2019-02-05 Aircraft Medical Limited Laryngoscope insertion section
US20100312059A1 (en) * 2007-08-28 2010-12-09 Aircraft Medical Limited Laryngoscope
US10986989B2 (en) 2007-08-28 2021-04-27 Aircraft Medical Limited Laryngoscope insertion section
US9226651B2 (en) 2007-08-28 2016-01-05 Aircraft Medical Limited Laryngoscope insertion section
US9414743B2 (en) * 2007-08-28 2016-08-16 Aircraft Medical Limited Laryngoscope
US9662001B2 (en) 2007-08-28 2017-05-30 Aircraft Medical Limited Laryngoscope insertion section
US20100254646A1 (en) * 2007-08-31 2010-10-07 Hans Wendeberg Bearing, and Methods of Handling the Bearing
US20090171155A1 (en) * 2007-12-27 2009-07-02 Koichi Tsunoda Oral cavity insertion instrument and pharyngoscope apparatus
US9078559B2 (en) * 2007-12-27 2015-07-14 Koichi Tsunoda Oral cavity insertion instrument and pharyngoscope apparatus
US9289114B2 (en) * 2010-07-30 2016-03-22 Nilesh R. Vasan Disposable, self-contained laryngoscope and method of using same
US20140316206A1 (en) * 2010-07-30 2014-10-23 Nilesh R. Vasan Disposable, self-contained laryngoscope and method of using same
US10342525B2 (en) * 2016-04-23 2019-07-09 Wesley Wilson Breast retractor tool
USD955572S1 (en) * 2017-03-13 2022-06-21 Colorado Voice Clinic, P.C. Retractor
USD876625S1 (en) 2018-08-07 2020-02-25 Adroit Surgical, Llc Laryngoscope

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