US3867946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binasopharyngeal airway
Assignee: Individual
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Filing: 1973-10-29
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Granted: 1975-02-25
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Expires: 1993-10-29
Abstract
Abstract An elastomeric nasopharyngeal airway comprising a tubular portion open at one end for receiving a gas supply device and two nasopharyngeal tube sections connected at the opposite end for insertion through the nose and nasopharynx. The tube sections each have diametrically opposed internal ridges which engage each other upon bending of the tube sections to prevent complete collapse which might otherwise obstruct or restrict passage of gas through the tube sections. Tip formations on the tube sections divert the gas streams to impinge on each other and thus reduce direct impingement of the gas streams on the surrounding portions of the patient''s tissues.
Inventors
- 👤 Robert A Huddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:08
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M16/00; A61M16/04; A61M16/0461; A61M16/06; A61M16/0666; A61M31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A pharyngeal airway comprising a one-piece tubular member of elastomeric material, said member having a tubular portion open at one end to receive a gas supply device, and a pair of spaced nasopharyngeal tube sections communicating with said tubular portion at the opposite end of said tubular portion, the ends of said tubular sections remote from said tubular portion being inclined oppositely to each other, and the passages of said tube sections adjacent the apices of said inclined ends curving inwardly toward each other whereby to deflect the respective gas streams into impingement with each other.
Claim 2
Dependent Claim
96 words
A pharyngeal airway comprising a one-piece tubular member of elastomeric material, said member having a tubular portion open at one end to receive a gas supply device, and a pair of spaced nasopharyngeal tube sections communicating with said tubular portion at the opposite end of said tubular portion, the ends of said tubular sections remote from said tubular portion being inclined oppositely to each other, and the passages of said tube sections adjacent the apices of said inclined ends curving inwardly toward each other whereby to deflect the respective gas streams into impingement with each other.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |