CA2346248A1 - Laryngeal mask airway device - Google Patents
Laryngeal mask airway device Download PDFInfo
- Publication number
- CA2346248A1 CA2346248A1 CA002346248A CA2346248A CA2346248A1 CA 2346248 A1 CA2346248 A1 CA 2346248A1 CA 002346248 A CA002346248 A CA 002346248A CA 2346248 A CA2346248 A CA 2346248A CA 2346248 A1 CA2346248 A1 CA 2346248A1
- Authority
- CA
- Canada
- Prior art keywords
- laryngeal
- backplate
- pharyngeal
- region
- cuff
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0402—Special features for tracheal tubes not otherwise provided for
- A61M16/0409—Special features for tracheal tubes not otherwise provided for with mean for closing the oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0434—Cuffs
- A61M16/0445—Special cuff forms, e.g. undulated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0434—Cuffs
- A61M16/0443—Special cuff-wall materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0488—Mouthpieces; Means for guiding, securing or introducing the tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/06—Head
- A61M2210/0625—Mouth
- A61M2210/0656—Epiglottis
Abstract
A modified laryngeal mask airway device (LMA-device) (20) is provided with means to improve ease of insertion, reliability of function and higher seal pressure (i.e., cuff pressure ratio). The LMA-device (20) includes an indent ed section (140) of the airway tube (47) to offer locating means and purchase f or the inserting finger, and extended mask aperture bars (115, 117) to increase the effective ventilating area of the mask (20) and reduce the possibility o f epiglottis displacement occasioned by mask insertion. The LMA-device (20) further includes a modification of the airway tube angle (137) of attachment to the mask (20), and provision of a posterior or back-cushion (77) covering the entire posterior surface of the mask (20).
Claims (10)
1. A laryngeal-mask airway device comprising:
an inflatable main-cuff which, when inflated, has the shape of a torus generated by an asymmetrical oval having a wider proximal region and a narrower distal region, said main-cuff having an inflation port connected to said proximal region and being a molded product of relatively thin and softly pliant elastomeric material; and a backplate comprising a bowl having a transversely concave laryngeal-side and a convex pharyngeal-side, said backplate being hermetically bonded to a periphery of said main-cuff establishing separation between a laryngeal-chamber region and a pharyngeal region, said backplate further comprising an external tube joint adjacent to said proximal region of said main-cuff, said tube joint being formed on said pharyngeal-side and extending from said pharyngeal-side into said pharyngeal region, said tube joint further including a passageway extending through said backplate for communication between said pharyngeal and laryngeal-chamber regions, said bowl having a longitudinal distal rib for longitudinally supporting the distal region of said main-cuff.
an inflatable main-cuff which, when inflated, has the shape of a torus generated by an asymmetrical oval having a wider proximal region and a narrower distal region, said main-cuff having an inflation port connected to said proximal region and being a molded product of relatively thin and softly pliant elastomeric material; and a backplate comprising a bowl having a transversely concave laryngeal-side and a convex pharyngeal-side, said backplate being hermetically bonded to a periphery of said main-cuff establishing separation between a laryngeal-chamber region and a pharyngeal region, said backplate further comprising an external tube joint adjacent to said proximal region of said main-cuff, said tube joint being formed on said pharyngeal-side and extending from said pharyngeal-side into said pharyngeal region, said tube joint further including a passageway extending through said backplate for communication between said pharyngeal and laryngeal-chamber regions, said bowl having a longitudinal distal rib for longitudinally supporting the distal region of said main-cuff.
2. A laryngeal-mask airway device as set forth in claim 1, wherein said distal rib extends into and through the interior of the distal region of said main-cuff.
3. A laryngeal-mask airway device as set forth in claim 2, wherein said distal rib has a distal tip which contacts the distal tip of said main-cuff:
4. A laryngeal-mask airway device as set forth in claim 1, wherein said distal rib is seated on the anterior surface of the distal region of said main-cuff.
5. A backplate for a laryngeal-mask airway device, said backplate comprising a bowl having a transversely concave laryngeal-side and a convex pharyngeal-side, said laryngeal-side having an airway aperture, said backplate being hermetically bonded to a periphery of a main-cuff establishing separation between a laryngeal-chamber region and a pharyngeal region, said backplate further comprising an external tube joint adjacent to said proximal region of said main-cuff, said tube joint being formed on said pharyngeal-side and extending from said pharyngeal-side into said pharyngeal region, said tube joint further including a passageway extending through said backplate for communication between said pharyngeal and laryngeal-chamber regions, said passageway opening through said airway aperture into said laryngeal-chamber region, said backplate further comprising a first mask aperture bar having opposing proximal and distal ends adjoining said laryngeal side proximally and distally of said airway aperture, respectively, said distal end of said first mask aperture bar being longitudinally positioned generally near the longitudinal mid-point of said laryngeal-side, or distally of said laryngeal-side to limit the angle between the mask aperture bar and the major plane of the main-cuff.
6. A backplate as set forth in claim 5, wherein said backplate comprises a second mask aperture bar having proximal and distal ends adjoining said laryngeal-side at generally the same longitudinal positions along said laryngeal-side as the corresponding proximal and distal ends of said first mask aperture bar.
7. A backplate as set forth in claim 6, wherein said backplate has a sagittal plane on opposite sides of which said first and second mask aperture bars are disposed.
8. A backplate as set forth in claim 7, wherein said first and second mask aperture bars are symmetrical relative to said sagittal plane.
9. A backplate for a laryngeal-mask airway device, said backplate comprising a bowl having a transversely concave laryngeal-side and a convex pharyngeal-side, said backplate being hermetically bonded to a periphery of a main-cuff establishing separation between a laryngeal-chamber region and a pharyngeal region, said backplate further comprising an external tube joint adjacent to said proximal region of said main-cuff, said tube joint being formed on said pharyngeal-side and extending from said pharyngeal-side into said pharyngeal region, said tube joint further including a passageway extending through said backplate for communication between said pharyngeal and laryngeal-chamber regions, said tube joint having an anterior outer surface in which is formed an indentation for directing the backplate.
10. A laryngeal-mask airway device comprising:
an inflatable main-cuff which, when inflated, has the shape of a torus generated by an asymmetrical oval having a wider proximal region and a narrower distal region, said main-cuff having an inflation port connected to said proximal region and being a molded product of relatively thin and softly pliant elastomeric material;
a backplate comprising a bowl having a transversely concave laryngeal-side and a convex pharyngeal-side, said backplate being hermetically bonded to a periphery of a main-cuff establishing separation between a laryngeal-chamber region and a pharyngeal region, said backplate further comprising an external tube joint adjacent to said proximal region of said main-cuff, said tube joint being formed on said pharyngeal-side and extending from said pharyngeal-side into said pharyngeal region, said tube joint further including a passageway extending through said backplate for communication between said pharyngeal and laryngeal-chamber regions, the portion of said bowl bonded to said main-cuff defining a bowl plane, said tube joint having a longitudinal axis forming an acute angle with a bowl plane; and a back-cushion bonded to said pharyngeal-side, said back-cushion having a sufficient resistance to compression to enable a reduced acute angle between the tube joint and bowl plane.
an inflatable main-cuff which, when inflated, has the shape of a torus generated by an asymmetrical oval having a wider proximal region and a narrower distal region, said main-cuff having an inflation port connected to said proximal region and being a molded product of relatively thin and softly pliant elastomeric material;
a backplate comprising a bowl having a transversely concave laryngeal-side and a convex pharyngeal-side, said backplate being hermetically bonded to a periphery of a main-cuff establishing separation between a laryngeal-chamber region and a pharyngeal region, said backplate further comprising an external tube joint adjacent to said proximal region of said main-cuff, said tube joint being formed on said pharyngeal-side and extending from said pharyngeal-side into said pharyngeal region, said tube joint further including a passageway extending through said backplate for communication between said pharyngeal and laryngeal-chamber regions, the portion of said bowl bonded to said main-cuff defining a bowl plane, said tube joint having a longitudinal axis forming an acute angle with a bowl plane; and a back-cushion bonded to said pharyngeal-side, said back-cushion having a sufficient resistance to compression to enable a reduced acute angle between the tube joint and bowl plane.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2650215A CA2650215C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
CA2650214A CA2650214C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
CA2650217A CA2650217C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9821771.4A GB9821771D0 (en) | 1998-10-06 | 1998-10-06 | Improvements relating to laryngeal mask airway devices |
GB9821771.4 | 1998-10-06 | ||
PCT/GB1999/003309 WO2000020062A2 (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2650214A Division CA2650214C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
CA2650215A Division CA2650215C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
CA2650217A Division CA2650217C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2346248A1 true CA2346248A1 (en) | 2000-04-13 |
CA2346248C CA2346248C (en) | 2009-12-01 |
Family
ID=10840092
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2650214A Expired - Fee Related CA2650214C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
CA002346248A Expired - Fee Related CA2346248C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
CA2650215A Expired - Fee Related CA2650215C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
CA2650217A Expired - Fee Related CA2650217C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2650214A Expired - Fee Related CA2650214C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2650215A Expired - Fee Related CA2650215C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
CA2650217A Expired - Fee Related CA2650217C (en) | 1998-10-06 | 1999-10-06 | Laryngeal mask airway device |
Country Status (11)
Country | Link |
---|---|
US (4) | US7156100B1 (en) |
EP (4) | EP1839696A3 (en) |
AT (1) | ATE303839T1 (en) |
AU (1) | AU6113399A (en) |
CA (4) | CA2650214C (en) |
DE (2) | DE99947765T1 (en) |
DK (1) | DK1119386T3 (en) |
ES (1) | ES2252977T3 (en) |
GB (1) | GB9821771D0 (en) |
HK (1) | HK1037985A1 (en) |
WO (1) | WO2000020062A2 (en) |
Cited By (7)
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US7806119B2 (en) | 2003-08-14 | 2010-10-05 | Intersurgical Uab | Airway device |
US8215307B2 (en) | 2002-08-14 | 2012-07-10 | Intersurgical Uab | Airway device |
US9592358B2 (en) | 2008-06-04 | 2017-03-14 | Intersurgical Ag | Respiratory interface devices |
US9937311B2 (en) | 2012-01-27 | 2018-04-10 | Ashkal Developments Limited | Stopper device |
USD842456S1 (en) | 2015-12-15 | 2019-03-05 | Intersurgical Ag | Airway device |
US10625037B2 (en) | 2013-12-17 | 2020-04-21 | Intersurgical Ag | Intubating airway device |
US11701484B2 (en) | 2017-12-13 | 2023-07-18 | Ashkal Developments Limited | Airway device |
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- 1998-10-06 GB GBGB9821771.4A patent/GB9821771D0/en not_active Ceased
-
1999
- 1999-10-05 US US09/412,954 patent/US7156100B1/en not_active Expired - Fee Related
- 1999-10-06 AT AT99947765T patent/ATE303839T1/en active
- 1999-10-06 AU AU61133/99A patent/AU6113399A/en not_active Abandoned
- 1999-10-06 DE DE99947765T patent/DE99947765T1/en active Pending
- 1999-10-06 CA CA2650214A patent/CA2650214C/en not_active Expired - Fee Related
- 1999-10-06 EP EP07011947A patent/EP1839696A3/en not_active Withdrawn
- 1999-10-06 ES ES99947765T patent/ES2252977T3/en not_active Expired - Lifetime
- 1999-10-06 CA CA002346248A patent/CA2346248C/en not_active Expired - Fee Related
- 1999-10-06 EP EP05019293A patent/EP1609497A3/en not_active Withdrawn
- 1999-10-06 DK DK99947765T patent/DK1119386T3/en active
- 1999-10-06 CA CA2650215A patent/CA2650215C/en not_active Expired - Fee Related
- 1999-10-06 CA CA2650217A patent/CA2650217C/en not_active Expired - Fee Related
- 1999-10-06 DE DE69927167T patent/DE69927167T2/en not_active Expired - Lifetime
- 1999-10-06 EP EP99947765A patent/EP1119386B1/en not_active Revoked
- 1999-10-06 EP EP05019292A patent/EP1600192A3/en not_active Withdrawn
- 1999-10-06 WO PCT/GB1999/003309 patent/WO2000020062A2/en active IP Right Grant
-
2001
- 2001-12-11 HK HK01108682A patent/HK1037985A1/en not_active IP Right Cessation
-
2005
- 2005-07-29 US US11/193,525 patent/US7506648B2/en not_active Expired - Fee Related
-
2006
- 2006-04-26 US US11/411,633 patent/US7493901B2/en not_active Expired - Fee Related
-
2008
- 2008-09-22 US US12/235,015 patent/US20090007920A1/en not_active Abandoned
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US8215307B2 (en) | 2002-08-14 | 2012-07-10 | Intersurgical Uab | Airway device |
US10040231B2 (en) | 2002-08-14 | 2018-08-07 | Muhammed Aslam Nasir | Airway device |
US7806119B2 (en) | 2003-08-14 | 2010-10-05 | Intersurgical Uab | Airway device |
US9592358B2 (en) | 2008-06-04 | 2017-03-14 | Intersurgical Ag | Respiratory interface devices |
US9937311B2 (en) | 2012-01-27 | 2018-04-10 | Ashkal Developments Limited | Stopper device |
US10625037B2 (en) | 2013-12-17 | 2020-04-21 | Intersurgical Ag | Intubating airway device |
USD842456S1 (en) | 2015-12-15 | 2019-03-05 | Intersurgical Ag | Airway device |
USD877888S1 (en) | 2015-12-15 | 2020-03-10 | Intersurgical Ag | Airway device |
US11701484B2 (en) | 2017-12-13 | 2023-07-18 | Ashkal Developments Limited | Airway device |
Also Published As
Publication number | Publication date |
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CA2650215A1 (en) | 2000-04-13 |
HK1037985A1 (en) | 2002-03-01 |
DK1119386T3 (en) | 2006-01-23 |
WO2000020062A2 (en) | 2000-04-13 |
CA2650217A1 (en) | 2000-04-13 |
US7493901B2 (en) | 2009-02-24 |
DE99947765T1 (en) | 2005-06-23 |
EP1600192A2 (en) | 2005-11-30 |
DE69927167T2 (en) | 2006-06-14 |
AU6113399A (en) | 2000-04-26 |
US20090007920A1 (en) | 2009-01-08 |
EP1119386A2 (en) | 2001-08-01 |
US20060254596A1 (en) | 2006-11-16 |
CA2650217C (en) | 2011-05-24 |
WO2000020062A3 (en) | 2000-07-06 |
CA2650214C (en) | 2011-06-21 |
GB9821771D0 (en) | 1998-12-02 |
CA2650215C (en) | 2010-05-04 |
EP1839696A2 (en) | 2007-10-03 |
DE69927167D1 (en) | 2005-10-13 |
EP1839696A3 (en) | 2009-11-18 |
EP1609497A2 (en) | 2005-12-28 |
US7156100B1 (en) | 2007-01-02 |
EP1609497A3 (en) | 2006-05-03 |
EP1600192A3 (en) | 2006-05-10 |
ATE303839T1 (en) | 2005-09-15 |
CA2346248C (en) | 2009-12-01 |
US20050274383A1 (en) | 2005-12-15 |
EP1119386B1 (en) | 2005-09-07 |
ES2252977T3 (en) | 2006-05-16 |
US7506648B2 (en) | 2009-03-24 |
CA2650214A1 (en) | 2000-04-13 |
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