CA2100998A1 - Laryngeal Mask Airway with Concentric Drainage of Oesophagus Discharge - Google Patents
Laryngeal Mask Airway with Concentric Drainage of Oesophagus DischargeInfo
- Publication number
- CA2100998A1 CA2100998A1 CA 2100998 CA2100998A CA2100998A1 CA 2100998 A1 CA2100998 A1 CA 2100998A1 CA 2100998 CA2100998 CA 2100998 CA 2100998 A CA2100998 A CA 2100998A CA 2100998 A1 CA2100998 A1 CA 2100998A1
- Authority
- CA
- Canada
- Prior art keywords
- mask
- cuff
- tube
- inflatable
- distal end
- 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
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
- Prostheses (AREA)
Abstract
A laryngeal mask airway is described which is fitted with an evacuation or drainage tube which passes through the back of the mask and terminates concentrically within an inflatable-cuff formation at the distal end of the mask. In the case of a laryngeal mask which relies on an inflatable ring to establish a seal around the laryngeal inlet, the inflatable-cuff formation results from sealed passage of the evacuation tube through the distal region of the inflatable ring, the distal end of which is centrally apertured and re-entrantly folded into sealed junction with the distal end of the tube. When the mask is inflated, its distal end establishes a cuff, sealing the tube against the upper oesophageal sphincter. In the presently preferred embodiment, an auxiliary inflatable cuff is carried at the back side of the mask and, when inflated, establishes a cushioned reference between the evacuation tube and the posterior wall of the pharynx, enabling more effective sealing of the mask to the laryngeal inlet and of the drainage cuff to the oesophageal sphincter, in the circumstance of negative pressure applied to the evacuation tube.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9215650.4 | 1992-07-23 | ||
GB929215650A GB9215650D0 (en) | 1992-05-21 | 1992-07-23 | Laryngeal mask airway with concentric drainage of oesophagus discharge |
US91928992A | 1992-07-24 | 1992-07-24 | |
US07/919,289 | 1992-07-24 | ||
US07/952,586 US5241956A (en) | 1992-05-21 | 1992-09-28 | Laryngeal mask airway with concentric drainage of oesophagus discharge |
USC.I.P.952586 | 1992-09-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2100998A1 true CA2100998A1 (en) | 1994-01-24 |
CA2100998C CA2100998C (en) | 1996-07-23 |
Family
ID=27266301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2100998 Expired - Lifetime CA2100998C (en) | 1992-07-23 | 1993-07-21 | Laryngeal mask airway with concentric drainage of oesophagus discharge |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2100998C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110464955A (en) * | 2019-02-20 | 2019-11-19 | 周星光 | Multichannel Bendable laryngeal mask class airway device, system and method |
-
1993
- 1993-07-21 CA CA 2100998 patent/CA2100998C/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110464955A (en) * | 2019-02-20 | 2019-11-19 | 周星光 | Multichannel Bendable laryngeal mask class airway device, system and method |
Also Published As
Publication number | Publication date |
---|---|
CA2100998C (en) | 1996-07-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request |