US3908665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oro-pharyngeal airway
Assignee: Individual
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Filing: 1974-05-20
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Granted: 1975-09-30
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Expires: 1994-05-20
Abstract
Abstract An improved oro-pharyngeal airway which comprises a relatively short straight bite portion having an extended elongated body portion formed in the general shape of the normal pharyngeal contour wherein the outer diameter of the body portion progressively increases from the distal to proximate end portions thereof so as to relieve any obstruction to the flow of air by the base of the tongue falling back on the posterior pharyngeal wall.
Inventors
- 👤 John A Moses
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:38
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267; A61M; A61M16/00; A61M16/04; A61M16/0488; A61M16/049; A61M16/0493; A61M16/0495
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
An oro-pharyngeal airway for use in the practice of anesthesiology and resuscitation for insertion into a patient''s mouth and pharynx to relieve obstruction to the flow of air that may be occasioned by the base of the tongue falling back in the posterior pharyngeal wall comprising: a generally straight bite portion having a transversely extending flange at one end thereof, an extended curved body portion integrally connected to said bite portion, said curved body portion functioning to maintain the patency of a pharynx passageway; said curved body portion having a distal end portion connected to said bite portion and a terminal proximate end portion to define a unitary airway, said body portion including spaced apart upper and lower curved walls, and an interconnecting wall for rigidly maintaining the spatial relationship between said upper and lower Curved walls, said curved body portion having a cross-sectional area which progressively increases from said distal end portion to said proximal end portion.
Claim 2
Dependent Claim
158 words
An oro-pharyngeal airway for use in the practice of anesthesiology and resuscitation for insertion into a patient''s mouth and pharynx to relieve obstruction to the flow of air that may be occasioned by the base of the tongue falling back in the posterior pharyngeal wall comprising: a generally straight bite portion having a transversely extending flange at one end thereof, an extended curved body portion integrally connected to said bite portion, said curved body portion functioning to maintain the patency of a pharynx passageway; said curved body portion having a distal end portion connected to said bite portion and a terminal proximate end portion to define a unitary airway, said body portion including spaced apart upper and lower curved walls, and an interconnecting wall for rigidly maintaining the spatial relationship between said upper and lower Curved walls, said curved body portion having a cross-sectional area which progressively increases from said distal end portion to said proximal end portion.
Claim 3
Dependent Claim
26 words
The invention as defined in claim 1 wherein said upper and lower curved walls have a thickness which progressively increases from said distal to proximal ends.
Claim 4
Dependent Claim
27 words
The invention as defined in claim 2 wherein said upper and lower curved walls and interconnecting wall defines a passageway which is substantially uniform in cross section.
Claim 5
Dependent Claim
16 words
The invention as defined in claim 1 wherein the extended body portion is C-shaped in cross-section.
Claim 6
Dependent Claim
17 words
The invention as defined in claim 1 wherein said extended body portion is H-shaped in cross section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |