US6050264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laryngeal mask assemblies
Assignee: Smiths Group PLC
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Filing: 1997-09-05
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Granted: 2000-04-18
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Expires: 2017-09-05
Abstract
Abstract A laryngeal mask assembly has a laryngeal mask device with a tube opening into a mask. The assembly includes an obturator inserted along the tube during insertion, with the patient end of the obturator lying adjacent the patient end of the tube so as to prevent the epiglottis entering the tube. The obturator has an air passage extending along its length and a handle projecting rearwardly from a stop, which limits how far the obturator can be inserted in the tube.
Inventors
- 👤 Brian George Greenfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:29
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/0409; A61M16/0429; A61M16/0475; A61M16/0477; A61M16/0484; A61M16/0488; A61M2210/00; A61M2210/06; A61M2210/0625; A61M2210/0656
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A method of inserting a laryngeal mask device comprising a mask and an elongate tube that opens at a patient end of said tube into a hollow recess on a forward surface of a support of said mask surrounded by an inflatable cuff, comprising the steps of: inserting an obturator into said tube so that a patient end of said obturator is located adjacent said patient end of said tube without protruding substantially therefrom, the dimensions of the patient end of the obturator being such as to prevent entry of the epiglottis into a bore at the patient end of the tube during insertion of the laryngeal mask device into a patient; inserting an assembly of said laryngeal mask device and said obturator into a patient so that said obturator engages and deflects the epiglottis during said inserting, said mask locates in the patient's hypopharynx and opens on a forward side to the patient's airway; and subsequently removing said obturator while leaving said laryngeal mask device in the patient's hypopharynx.
Claim 2
Independent Claim
170 words
A method of inserting a laryngeal mask device comprising a mask and an elongate tube that opens at a patient end of said tube into a hollow recess on a forward surface of a support of said mask surrounded by an inflatable cuff, comprising the steps of: inserting an obturator into said tube so that a patient end of said obturator is located adjacent said patient end of said tube without protruding substantially therefrom, the dimensions of the patient end of the obturator being such as to prevent entry of the epiglottis into a bore at the patient end of the tube during insertion of the laryngeal mask device into a patient; inserting an assembly of said laryngeal mask device and said obturator into a patient so that said obturator engages and deflects the epiglottis during said inserting, said mask locates in the patient's hypopharynx and opens on a forward side to the patient's airway; and subsequently removing said obturator while leaving said laryngeal mask device in the patient's hypopharynx.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-18 | 2003-10-18 | 2004-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-18 | 2007-10-18 | 2008-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-18 | 2011-10-18 | 2012-04-18 | $7700.00 | Window Closed / Lapsed |