Patent US5016255A successfully refreshed from Google Patents.
US6012452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laryngeal mask assemblies
Assignee: Smiths Group PLC
•
Filing: 1998-10-08
•
Granted: 2000-01-11
•
Expires: 2018-10-08
Abstract
Abstract A laryngeal mask airway has a foam cuff formed on the patient surface of a plate attached at the patient end of a tube. The cuff is of a self-skinning foam so that the skin of the foam forms the outer surface of the cuff and seals with the plate. An air lumen extruded along the tube opens at one end into the interior of the cuff and at the other end connects with an air line. The cuff can be compressed for insertion and removal by applying suction to the air line.
Inventors
- 👤 Eric Pagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:57
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/0409; A61M16/0434; A61M16/0436; A61M16/0445
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A laryngeal mask assembly including a tube and a mask portion at a patient end of said tube, said mask portion comprising a mount member joined with said patient end of said tube and said tube opening into a center of said mask portion, said mount member having an outwardly-projecting plate member and a foam cuff attached with said plate member, the improvement wherein said cuff is provided by a self-skinning foam material that forms a skin which itself provides an outer surface of said cuff, said skin of the foam material being sealed with said plate member, said assembly having an air passage opening into said cuff by which suction can be applied to said cuff to compress it for insertion.
Claim 2
Dependent Claim
122 words
A laryngeal mask assembly including a tube and a mask portion at a patient end of said tube, said mask portion comprising a mount member joined with said patient end of said tube and said tube opening into a center of said mask portion, said mount member having an outwardly-projecting plate member and a foam cuff attached with said plate member, the improvement wherein said cuff is provided by a self-skinning foam material that forms a skin which itself provides an outer surface of said cuff, said skin of the foam material being sealed with said plate member, said assembly having an air passage opening into said cuff by which suction can be applied to said cuff to compress it for insertion.
Claim 3
Dependent Claim
25 words
A laryngeal mask assembly according to claim 1, wherein said air passage is provided at least in part by a lumen extruded along said tube.
Claim 4
Dependent Claim
27 words
A laryngeal mask assembly according to claim 1, wherein the said skin of the foam material is sealed around an edge of said plate member by welding.
Claim 5
Dependent Claim
32 words
A laryngeal mask assembly according to claim 1, wherein said plate member has two opposite sides, and wherein the foam material of said cuff extends on both sides of said plate member.
Claim 6
Dependent Claim
31 words
A laryngeal mask assembly according to claim 1, wherein the said air passage is connectable with a bore through said tube such that said cuff is inflated slightly during positive ventilation.
Claim 7
Dependent Claim
116 words
A laryngeal mask assembly comprising: a tube; an air passage extending along said tube; a mount member joined with a patient end of said tube, said mount member having an outwardly-projecting plate member; a generally elliptical cuff attached with said plate member such that said tube opens into a center of said cuff, said cuff being provided by a self-skinning foam material that forms a skin which itself provides an outer surface of said cuff, said skin of the foam material being sealed with said plate member, and said air passage opening into said cuff between said plate member and said skin such that suction can be applied to said cuff to compress it for insertion.
Claim 8
Dependent Claim
116 words
A laryngeal mask assembly comprising: a tube; an air passage extending along said tube; a mount member joined with a patient end of said tube, said mount member having an outwardly-projecting plate member; a generally elliptical cuff attached with said plate member such that said tube opens into a center of said cuff, said cuff being provided by a self-skinning foam material that forms a skin which itself provides an outer surface of said cuff, said skin of the foam material being sealed with said plate member, and said air passage opening into said cuff between said plate member and said skin such that suction can be applied to said cuff to compress it for insertion.
References Cited (Backward Citations)
US3640282A
Cited
GB1308882A
Cited
US3799173A
Cited
EP0072230A1
Cited
GB2111394A
Cited
GB2128561A
Cited
GB2205499A
Cited
US4995388A
Cited
EP0448878A2
Cited
GB2249959A
Cited
US5303697A
Cited
US5277178A
Cited
US5391248A
Cited
US5305743A
Cited
GB2267034A
Cited
US5241956A
Cited
US5249571A
Cited
US5282464A
Cited
US5297547A
Cited
US5355879A
Cited
US5392774A
Cited
US5342858A
Cited
US5771888A
Cited
WO1995033506A1
Cited
US5477851A
Cited
US5513627A
Cited
GB2298797A
Cited
US5771889A
Cited
US5819733A
Cited
US5623921A
Cited
WO1998016273A1
Cited
WO1998050096A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-10 | 2003-07-12 | 2004-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-10 | 2007-07-12 | 2008-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-10 | 2011-07-12 | 2012-01-11 | $7700.00 | Window Closed / Lapsed |