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WO2009066078A1 - A blade for a laryngoscope - Google Patents

A blade for a laryngoscope Download PDF

Info

Publication number
WO2009066078A1
WO2009066078A1 PCT/GB2008/003901 GB2008003901W WO2009066078A1 WO 2009066078 A1 WO2009066078 A1 WO 2009066078A1 GB 2008003901 W GB2008003901 W GB 2008003901W WO 2009066078 A1 WO2009066078 A1 WO 2009066078A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
body portion
lower wall
laryngoscope
nose portion
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/GB2008/003901
Other languages
French (fr)
Inventor
Paul Flecknell
Niall Mcferran
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sogeval UK Ltd
Original Assignee
Alstoe Ltd
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 Alstoe Ltd filed Critical Alstoe Ltd
Publication of WO2009066078A1 publication Critical patent/WO2009066078A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2503/00—Evaluating a particular growth phase or type of persons or animals
    • A61B2503/40—Animals

Definitions

  • This invention relates to a blade for a laryngoscope, and in particular, to a laryngoscope suitable for use with small animals.
  • Laryngoscopes have been used for a large number of years for intubation of humans, for example, during anaesthesia, in order to provide rapid access to the trachea and minimise damage to teeth, tempero-mandibular joints and other vulnerable structures.
  • a conventional laryngoscope comprises a handle joined by a folding blade that incorporates arrangements for lighting and there are several designs of these currently popular and available for use on humans. These typically include blade designs such as the Miller, Wisconsin and Macintosh blades that have been available for the last 50 years or so.
  • this has a circular profile extending through over 180 degrees with an elongate nose portion to guide insertion, and attachment means for attaching the blade to a handle.
  • the present invention is concerned with providing a design of blade for use on a laryngoscope which blade is particularly suited and designed for use with small animals.
  • the present invention provides a blade for a laryngoscope, the blade having: an elongate body portion open along at least a portion of its length and having a generally flattened upper wall and a curved lower wall defining an open passage; a nose portion formed as an extension of the lower wall at one end of the body portion; and attachment means at a second end of the body portion remote from said first end.
  • the cross-sectional curvature of the nose portion is substantially the same as that of the lower wall.
  • the nose portion is narrower than the lower wall and tapers in a direction away from said lower wall.
  • the upper and lower walls of the body portion in cross-section, extend around the longitudinal axis of the blade by an angle of less than 180°.
  • the blade is straight.
  • the preferred embodiment may further comprise means for transmitting light to the nose portion.
  • the means for transmitting light may comprise a tube extending along said body portion within the confines of said upper and lower walls. Preferably, the tube exits said body portion through an opening adjacent said second end of said body portion.
  • the upper and lower portions of the blade extend through less than 180 degrees in defining the open passage.
  • the blade is less bulky in its cross sectional dimension than the equivalent blade in use for human usage but for the anatomy of small animals is sufficient to define the needed passage.
  • the nose portion of the blade may be provided with suitable profiling to assist with the insertion into a patient.
  • the provision of the profiling removes sharp edges and corners and therefore removes the chances of damage being caused by the insertion of the blade.
  • the blade may incorporate a light source.
  • the blade including the nose portion is straight.
  • the blade is straight so that the tip can be viewed and if desired the epiglottis disengaged or fixed.
  • Figure 1 shows a side view of a preferred form of blade in accordance with the present invention:
  • Figure 2 shows a plan view of the blade shown in figure 1 ;
  • Figure 3 shows an end view of the blade in the direction of arrow A of figure 1.
  • the blade 10 for use with a laryngoscope.
  • the blade 10 has a main, elongate body portion 12 which extends into a nose portion 14 at a first end region 16 of the main portion 12.
  • the main body portion 12 is part tubular in shape, open along at least a portion of its length.
  • the body portion comprises an elongate open portion 22 which in cross-section has a generally flattened upper wall 24 and a curved lower wall 26 depending from the upper wall 24.
  • the lower wall 26 curves inwardly such that the lower and upper walls in combination partially enclose or define a tubular space or passage 27.
  • the upper and lower walls 24, 26 of the blade 10 extend through an angle of less than 180 degrees around the longitudinal axis of the blade in defining the open passage.
  • a boss or lateral extension 18 is formed at a second end region 20 of the body portion 12 opposite the nose portion 14 and has attachment means 30 preferably in the form of a connector which enables the attachment of the blade 10 to a handle of a laryngoscope.
  • the boss is conveniently formed integral with the body portion 12.
  • a passage or opening 32 is provided in the side wall 26 of the body portion 12 adjacent to the second end 20 of the body portion.
  • the nose portion 14 is formed at one end of the main body portion 12 as an extension of the lower portion of the lower wall 26.
  • the nose portion 14 may be formed with suitable profiling to assist insertion of the device but as can be seen in the drawings in this embodiment its cross-sectional curvature is similar to or the same as the upper portion of the lower wall 26.
  • the particular design of the blade allows access of the blade to a narrower oro-pharynx typically found with small animals, significantly reducing the chances of damage thereto.
  • the attachment means 30 may be a conventional mounting such as is currently in use and a detailed description is not required.
  • a tube or conduit 36 passes through the attachment means 30 and the opening 32 to extend along a portion of the length of the main body portion 2.
  • the tube is open at its left hand end as seen in Figure 1 , adjacent the first end region 16.
  • the tube transmits light from the handle of the laryngoscope to illuminate the trachea.
  • the blade 10 in the example shown is generally straight so that the tip can be viewed and if desired the epiglottis disengaged or fixed. However, it will be appreciated that the blade 10 may also be suitably curved for specific applications.

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

A blade (10) for a laryngoscope has an elongate body portion (12) open along at least a portion of its length. The body portion has a generally flattened upper wall (24) and a curved lower wall (26) defining an open passage (27). A nose portion (14) is formed as an extension of the lower wall (26) at one end (16) of the body portion. An attachment means (30) is provided at a second end (20) of the body portion (12) for attaching the blade to the laryngoscope.

Description

A Blade For A Laryngoscope
This invention relates to a blade for a laryngoscope, and in particular, to a laryngoscope suitable for use with small animals.
Laryngoscopes have been used for a large number of years for intubation of humans, for example, during anaesthesia, in order to provide rapid access to the trachea and minimise damage to teeth, tempero-mandibular joints and other vulnerable structures. A conventional laryngoscope comprises a handle joined by a folding blade that incorporates arrangements for lighting and there are several designs of these currently popular and available for use on humans. These typically include blade designs such as the Miller, Wisconsin and Macintosh blades that have been available for the last 50 years or so.
With regard to the conventional Wisconsin blade this has a circular profile extending through over 180 degrees with an elongate nose portion to guide insertion, and attachment means for attaching the blade to a handle.
In recent years there has been an increase in the use of intubation by veterinarians particularly associated with the increase in the use of gas anaesthetics in this area.
Small animals, such as dogs and cats, have different anatomical dimensions and make up to humans as well as between themselves. This means that the conventional blade arrangements available for human usage are inappropriate for use with small animals.
At present veterinarians are using child sized blades on small animals with all the difficulty that this brings about and the problems that this can cause because this is all that is really available for them.
The present invention is concerned with providing a design of blade for use on a laryngoscope which blade is particularly suited and designed for use with small animals.
Accordingly, the present invention provides a blade for a laryngoscope, the blade having: an elongate body portion open along at least a portion of its length and having a generally flattened upper wall and a curved lower wall defining an open passage; a nose portion formed as an extension of the lower wall at one end of the body portion; and attachment means at a second end of the body portion remote from said first end. In a preferred form of the invention the cross-sectional curvature of the nose portion is substantially the same as that of the lower wall. The nose portion is narrower than the lower wall and tapers in a direction away from said lower wall.
Preferably, the upper and lower walls of the body portion, in cross-section, extend around the longitudinal axis of the blade by an angle of less than 180°.
In one embodiment the blade is straight.
The preferred embodiment may further comprise means for transmitting light to the nose portion. The means for transmitting light may comprise a tube extending along said body portion within the confines of said upper and lower walls. Preferably, the tube exits said body portion through an opening adjacent said second end of said body portion.
The upper and lower portions of the blade extend through less than 180 degrees in defining the open passage.
This means that the blade is less bulky in its cross sectional dimension than the equivalent blade in use for human usage but for the anatomy of small animals is sufficient to define the needed passage.
The nose portion of the blade may be provided with suitable profiling to assist with the insertion into a patient.
The provision of the profiling removes sharp edges and corners and therefore removes the chances of damage being caused by the insertion of the blade.
The blade may incorporate a light source.
In one configuration of the invention the blade including the nose portion is straight. The blade is straight so that the tip can be viewed and if desired the epiglottis disengaged or fixed. The invention will now be illustrated, by description of an example made in accordance with the present invention, and with reference to the accompanying drawings, in which:
Figure 1 shows a side view of a preferred form of blade in accordance with the present invention:
Figure 2 shows a plan view of the blade shown in figure 1 ; and
Figure 3 shows an end view of the blade in the direction of arrow A of figure 1.
Now referring to the drawings there is shown a blade 10 for use with a laryngoscope. The blade 10 has a main, elongate body portion 12 which extends into a nose portion 14 at a first end region 16 of the main portion 12.
The main body portion 12 is part tubular in shape, open along at least a portion of its length. The body portion comprises an elongate open portion 22 which in cross-section has a generally flattened upper wall 24 and a curved lower wall 26 depending from the upper wall 24. The lower wall 26 curves inwardly such that the lower and upper walls in combination partially enclose or define a tubular space or passage 27. The upper and lower walls 24, 26 of the blade 10 extend through an angle of less than 180 degrees around the longitudinal axis of the blade in defining the open passage.
A boss or lateral extension 18 is formed at a second end region 20 of the body portion 12 opposite the nose portion 14 and has attachment means 30 preferably in the form of a connector which enables the attachment of the blade 10 to a handle of a laryngoscope.
The boss is conveniently formed integral with the body portion 12.
A passage or opening 32 is provided in the side wall 26 of the body portion 12 adjacent to the second end 20 of the body portion.
The nose portion 14 is formed at one end of the main body portion 12 as an extension of the lower portion of the lower wall 26. The nose portion 14 may be formed with suitable profiling to assist insertion of the device but as can be seen in the drawings in this embodiment its cross-sectional curvature is similar to or the same as the upper portion of the lower wall 26.
The particular design of the blade allows access of the blade to a narrower oro-pharynx typically found with small animals, significantly reducing the chances of damage thereto.
The attachment means 30 may be a conventional mounting such as is currently in use and a detailed description is not required.
A tube or conduit 36 passes through the attachment means 30 and the opening 32 to extend along a portion of the length of the main body portion 2. The tube is open at its left hand end as seen in Figure 1 , adjacent the first end region 16. The tube transmits light from the handle of the laryngoscope to illuminate the trachea.
The blade 10 in the example shown is generally straight so that the tip can be viewed and if desired the epiglottis disengaged or fixed. However, it will be appreciated that the blade 10 may also be suitably curved for specific applications.

Claims

Claims
1 A blade (10) for a laryngoscope, the blade having: an elongate body portion (12) open along at least a portion of its length and having a generally flattened upper wall (24) and a curved lower wall (26) defining an open passage (27); a nose portion (14) formed as an extension of the lower wall (26) at one end (16) of the body portion; and attachment means (30) at a second end (20) of the body portion (12) remote from said first end (16).
2 A blade as claimed in claim 1 wherein the cross-sectional curvature of the nose portion (14) is substantially the same as that of the lower wall (26).
3 A blade as claimed in claim 1 or 2 wherein the nose portion (14) is narrower than the lower wall (26).
4 A blade as claimed in any preceding claim wherein the nose portion (14) tapers in a direction away from said lower wall (26).
5 A blade as claimed in any preceding claim wherein the upper and lower walls (24, 26) of the body portion (12), in cross-section, extend around the longitudinal axis of the blade by an angle of less than 180°.
6 A blade as claimed in any preceding claim wherein said blade is straight.
7 A blade as claimed in any preceding claim further comprising means (36) for transmitting light to the nose portion (14).
8 A blade as claimed in claim 7 wherein said means (36) for transmitting light comprises a tube extending along said body portion (12) within the confines of said upper and lower walls (24, 26).
9 A blade as claimed in claim 8 wherein said tube (36) exits said body portion (12) through an opening (32) adjacent said second end of said body portion (12).
PCT/GB2008/003901 2007-11-22 2008-11-24 A blade for a laryngoscope Ceased WO2009066078A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0722879A GB0722879D0 (en) 2007-11-22 2007-11-22 A blade for a laryngoscope
GB0722879.4 2007-11-22

Publications (1)

Publication Number Publication Date
WO2009066078A1 true WO2009066078A1 (en) 2009-05-28

Family

ID=38925859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/003901 Ceased WO2009066078A1 (en) 2007-11-22 2008-11-24 A blade for a laryngoscope

Country Status (2)

Country Link
GB (1) GB0722879D0 (en)
WO (1) WO2009066078A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD862696S1 (en) 2018-07-30 2019-10-08 Teleflex Medical Incorporated Laryngoscope blade
USD863555S1 (en) 2018-07-30 2019-10-15 Teleflex Medical Incorporated Laryngoscope blade
US12185923B2 (en) 2019-03-14 2025-01-07 Teleflex Medical Incorporated Universal laryngoscope blade for both conventional handles and fiber-illuminated handles

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112933A (en) * 1977-01-21 1978-09-12 Moses John A Laryngoscope of the straight blade type
US5065738A (en) * 1990-01-16 1991-11-19 Dam David J Van Laryngoscope blade sheath
US5993383A (en) * 1999-05-27 1999-11-30 Haase; Brian J. Laryngoscope blade with tongue controlling wing sections
WO2001010293A1 (en) * 1999-08-06 2001-02-15 King Lewis Peter William Laryngoscope blade
US6231505B1 (en) * 1999-09-20 2001-05-15 Tyson Edward Martin Laryngoscope blade
US20020068854A1 (en) * 2000-12-06 2002-06-06 Heine Helmut A. Laryngoscope

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112933A (en) * 1977-01-21 1978-09-12 Moses John A Laryngoscope of the straight blade type
US5065738A (en) * 1990-01-16 1991-11-19 Dam David J Van Laryngoscope blade sheath
US5993383A (en) * 1999-05-27 1999-11-30 Haase; Brian J. Laryngoscope blade with tongue controlling wing sections
WO2001010293A1 (en) * 1999-08-06 2001-02-15 King Lewis Peter William Laryngoscope blade
US6231505B1 (en) * 1999-09-20 2001-05-15 Tyson Edward Martin Laryngoscope blade
US20020068854A1 (en) * 2000-12-06 2002-06-06 Heine Helmut A. Laryngoscope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD862696S1 (en) 2018-07-30 2019-10-08 Teleflex Medical Incorporated Laryngoscope blade
USD863555S1 (en) 2018-07-30 2019-10-15 Teleflex Medical Incorporated Laryngoscope blade
US12185923B2 (en) 2019-03-14 2025-01-07 Teleflex Medical Incorporated Universal laryngoscope blade for both conventional handles and fiber-illuminated handles

Also Published As

Publication number Publication date
GB0722879D0 (en) 2008-01-02

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