Patent US2091370A successfully refreshed from Google Patents.
Patent US6095144A successfully refreshed from Google Patents.
US6095144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laryngeal mask assemblies
Assignee: Smiths Group PLC
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Filing: 1998-04-30
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Granted: 2000-08-01
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Expires: 2018-04-30
Abstract
Abstract A laryngeal mask assembly has a tubular shaft with a mask portion formed by a resilient skirt towards its patient end, which seals with tissue in the region of the hypopharynx. An inflatable cuff, with several annular reinforcing members, projects axially at the patient end of the assembly into the laryngeal inlet. Towards its patient end, the cuff has a flap that normally closes the passage through the cuff and prevents entry of the epiglottis. A pull cord attached with the flap enables the flap to be pulled to one side, deflecting the epiglottis and opening the passage through the cuff.
Inventors
- 👤 Eric Pagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:00
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/0409; A61M16/0418; A61M2210/00; A61M2210/06; A61M2210/0625; A61M2210/0656
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
101 words
A laryngeal mask assembly comprising: a tubular shaft with a patient end and a machine end; a mask portion towards said patient end of said tubular shaft, said mask portion being shaped to seal, in use, with tissue in the region of the hypopharnx, and a tubular cuff member attached at one end with said laryngeal mask assembly, said tubular cuff member extending substantially axially of said tubular shaft beyond said mask portion into the laryngeal inlet, and wherein an opposite end of said cuff member is axially expandable relative to said mask and forms an extension of said tubular shaft.
Claim 2
Dependent Claim
101 words
A laryngeal mask assembly comprising: a tubular shaft with a patient end and a machine end; a mask portion towards said patient end of said tubular shaft, said mask portion being shaped to seal, in use, with tissue in the region of the hypopharnx, and a tubular cuff member attached at one end with said laryngeal mask assembly, said tubular cuff member extending substantially axially of said tubular shaft beyond said mask portion into the laryngeal inlet, and wherein an opposite end of said cuff member is axially expandable relative to said mask and forms an extension of said tubular shaft.
Claim 3
Dependent Claim
53 words
A laryngeal mask assembly according to claim 1, wherein said cuff member includes a deflectable member at its patient end that, in one position, prevents entry of the epiglottis into the patient end of said assembly and, in another position, deflects the epiglottis away from the patient end of said laryngeal mask assembly.
Claim 4
Dependent Claim
42 words
A laryngeal mask assembly according to claim 2, wherein said laryngeal mask assembly includes a pull cord attached with said deflectable member, and wherein said pull cord is operable to move said deflectable member from said one position to said other position.
Claim 5
Dependent Claim
33 words
A laryngeal mask assembly according to claim 1, wherein said cuff member includes at least one annular reinforcing member arranged to keep open a central passage through a part of said cuff member.
Claim 6
Dependent Claim
20 words
A laryngeal mask assembly according to claim 4, wherein said cuff member includes a plurality of said annular reinforcement members.
Claim 7
Dependent Claim
105 words
A laryngeal mask assembly comprising: a tubular shaft with a patient end and a machine end; a mask portion towards said patient end of said tubular shaft, said mask portion being adapted to seal with tissue in the region of the hypopharnx; and a cuff member attached at one end with said laryngeal mask assembly and forming an extension of said tubular shaft, said cuff member being changeable from a first state where it prevents entry of the epiglottis into the patient end of said laryngeal mask assembly to a second state where it deflects the epiglottis away from the patient end of said assembly.
Claim 8
Dependent Claim
105 words
A laryngeal mask assembly comprising: a tubular shaft with a patient end and a machine end; a mask portion towards said patient end of said tubular shaft, said mask portion being adapted to seal with tissue in the region of the hypopharnx; and a cuff member attached at one end with said laryngeal mask assembly and forming an extension of said tubular shaft, said cuff member being changeable from a first state where it prevents entry of the epiglottis into the patient end of said laryngeal mask assembly to a second state where it deflects the epiglottis away from the patient end of said assembly.
Claim 9
Dependent Claim
19 words
A laryngeal mask assembly according to claim 1 or 6, wherein said mask portion is a non-inflatable resilient skirt.
Claim 10
Dependent Claim
16 words
A laryngeal mask assembly according to claim 1 or 6, wherein said cuff member is inflatable.
Claim 11
Dependent Claim
19 words
A laryngeal mask assembly according to claim 1 or 6, wherein said cuff member is a resilient funnel-shape member.
Claim 12
Dependent Claim
142 words
A laryngeal mask assembly comprising: a tubular shaft with a patient end and a machine end; a mask portion towards said patient end of said tubular shaft, said mask portion being shaped to seal, in use, with tissue in the region of the hypopharynx; and an inflatable tubular cuff member, said cuff member having an axial passage extending therethrough, and said cuff member extending substantially axially of said tubular shaft beyond said mask portion into the laryngeal inlet, said cuff member having a flap member folded over a patient end of said passage through said cuff member to prevent entry of the epiglottis to said cuff member; and a pull cord attached with said flap member and extending to said machine end of said shaft, said pull cord operable to deflect said flap member and open the passage through said cuff member.
Claim 13
Dependent Claim
142 words
A laryngeal mask assembly comprising: a tubular shaft with a patient end and a machine end; a mask portion towards said patient end of said tubular shaft, said mask portion being shaped to seal, in use, with tissue in the region of the hypopharynx; and an inflatable tubular cuff member, said cuff member having an axial passage extending therethrough, and said cuff member extending substantially axially of said tubular shaft beyond said mask portion into the laryngeal inlet, said cuff member having a flap member folded over a patient end of said passage through said cuff member to prevent entry of the epiglottis to said cuff member; and a pull cord attached with said flap member and extending to said machine end of said shaft, said pull cord operable to deflect said flap member and open the passage through said cuff member.
Claim 14
Dependent Claim
151 words
A laryngeal mask assembly comprising: a tubular shaft with a patient end and a machine end; a mask portion towards said patient end of said tubular shaft, said mask portion being shaped to seal, in use, with tissue in the region of the hypopharynx; and a resilient cuff member extending substantially axially of said tubular shaft beyond said mask portion into the laryngeal inlet, said cuff member having a funnel shape with two opposite sides that are deflectable between a first position in which said sides closely engage one another and a second position in which said sides are spaced from one another and there is an open passage along the cuff member; and a pull cord attached with said cuff member and extending to said machine end of said shaft, said pull cord operable to deflect said sides of said cuff member from said first position to said second position.
Claim 15
Dependent Claim
151 words
A laryngeal mask assembly comprising: a tubular shaft with a patient end and a machine end; a mask portion towards said patient end of said tubular shaft, said mask portion being shaped to seal, in use, with tissue in the region of the hypopharynx; and a resilient cuff member extending substantially axially of said tubular shaft beyond said mask portion into the laryngeal inlet, said cuff member having a funnel shape with two opposite sides that are deflectable between a first position in which said sides closely engage one another and a second position in which said sides are spaced from one another and there is an open passage along the cuff member; and a pull cord attached with said cuff member and extending to said machine end of said shaft, said pull cord operable to deflect said sides of said cuff member from said first position to said second position.
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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) | 2003-08-01 | 2004-01-31 | 2004-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-01 | 2008-01-31 | 2008-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-01 | 2012-01-31 | 2012-08-01 | $7700.00 | Window Closed / Lapsed |