US4338930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airway intubator
Assignee: Individual
•
Filing: 1980-09-08
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Granted: 1982-07-13
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Expires: 2000-09-08
Abstract
Abstract This invention relates to an oro-pharyngeal airway of generally ellipsoidal cross-sectional shape adapted to function as a guide and passageway for an endotracheal tube for intubation of a human larynx having distal and proximal halves and ends in which the proximal end is generally in the shape of a cylindrical tunnel of a size sufficient to accommodate a complementary endotracheal tube and in which the distal half and end is open along its lingual surface so as to permit the passage therethrough of the aforesaid complementary endotracheal tube.
Inventors
- 👤 R. Tudor Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0488; A61M16/049; A61M16/0493; A61M2209/00; A61M2209/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
83 words
An improved oro-pharyngeal airway adapted to function as a guide and passageway for an endotracheal tube for intubation of a human larynx, said airway having distal and proximal halves and ends of generally ellipsoidal, exterior cross-sectional shape, in which the airway has an air passage therethrough of a size sufficient to accommodate a complementary endotracheal tube and in which the distal half and end is open along its lingual surface so as to permit the passage therethrough of the aforesaid complementary endotracheal tube.
Claim 2
Dependent Claim
83 words
An improved oro-pharyngeal airway adapted to function as a guide and passageway for an endotracheal tube for intubation of a human larynx, said airway having distal and proximal halves and ends of generally ellipsoidal, exterior cross-sectional shape, in which the airway has an air passage therethrough of a size sufficient to accommodate a complementary endotracheal tube and in which the distal half and end is open along its lingual surface so as to permit the passage therethrough of the aforesaid complementary endotracheal tube.
Claim 3
Dependent Claim
22 words
An oro-pharyngeal airway as described in claim 1, in which the proximal end of the airway is open along its superior surface.
Claim 4
Dependent Claim
23 words
An oro-pharyngeal airway as described in claims 1 or 2, in which the proximal end has an interior shape of generally circular cross-section.
Claim 5
Dependent Claim
23 words
An oro-pharyngeal airway as described in claims 1 or 2, in which the proximal end has an interior shape of generally ellipsoidal cross-section.
References Cited (Backward Citations)
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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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |