Patent US2486866A successfully refreshed from Google Patents.
Patent US3926196A successfully refreshed from Google Patents.
US3926196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airway
Assignee: Thermo Fisher Scientific Inc
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Filing: 1974-08-05
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Granted: 1975-12-16
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Expires: 1994-08-05
Abstract
Abstract An airway has upper and lower elongated, substantially planar surfaces connected in spaced relation by two rows of longitudinally spaced apart struts on opposite sides of a central channel. Convergent inner surfaces of the struts guide a suction tube through the airway and the spaces between the struts allow for drainage of the central channel to prevent occlusion.
Inventors
- 👤 Walter J Bornhorst
- 👤 Steven J Coleman
- 👤 James W O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:30
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267; A61M; A61M16/00; A61M16/04; A61M16/0488; A61M16/049; A61M16/0493; A61M16/0495; A61M29/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
212 words
An oral airway for providing both an air passage to a person''s trachea and a channel through which to insert a flexible tube into the trachea comprising: a curved section adapted to fit over a person''s tongue and extending to the entrance of the trachea connected to one end of a second section adapted to fit between and support a person''s teeth, the other end of said second section being adapted to extend out of a person''s mouth to serve as the entrance of said airway, said curved and second sections forming an upper surface and a lower surface, said upper surface being spaced from and connected to said lower surface by two rows of struts, said two rows of struts together with said upper and lower surfaces defining said channel, said struts in each of said rows being separated from one another to form open passages therebetween, wherein struts in each of said rows define surfaces facing said channel which converge toward the longitudinal midline of said channel to form tube guides for directing the end of a tube inserted through said entrance toward said midline to thereby guide said tube through said channel and into the trachea, and means mounted on said airway to inhibit inward displacement of said airway.
Claim 2
Dependent Claim
212 words
An oral airway for providing both an air passage to a person''s trachea and a channel through which to insert a flexible tube into the trachea comprising: a curved section adapted to fit over a person''s tongue and extending to the entrance of the trachea connected to one end of a second section adapted to fit between and support a person''s teeth, the other end of said second section being adapted to extend out of a person''s mouth to serve as the entrance of said airway, said curved and second sections forming an upper surface and a lower surface, said upper surface being spaced from and connected to said lower surface by two rows of struts, said two rows of struts together with said upper and lower surfaces defining said channel, said struts in each of said rows being separated from one another to form open passages therebetween, wherein struts in each of said rows define surfaces facing said channel which converge toward the longitudinal midline of said channel to form tube guides for directing the end of a tube inserted through said entrance toward said midline to thereby guide said tube through said channel and into the trachea, and means mounted on said airway to inhibit inward displacement of said airway.
Claim 3
Dependent Claim
11 words
The invention of claim 1, wherein no strut crosses said midline.
Claim 4
Dependent Claim
34 words
The invention of claim 2, wherein struts in said second section are set directly opposite each other to form a well defined entrance opening to said channel and provide support for a person''s teeth.
Claim 5
Dependent Claim
21 words
The invention of claim 2, wherein struts in one row are in a staggered relationship to struts in the other row.
Claim 6
Dependent Claim
52 words
The invention of claim 4, wherein said struts along said curved section in one of said rows do not overlap said struts along said curved section in the other row, so that no part of any strut is perpendicularly across said channel from any part of another strut in said curved section.
Claim 7
Dependent Claim
121 words
The invention of claim 4, wherein said struts are generally flat, solid plates, each of said plates being connected along its entire length perpendicularly to said upper and lower surfaces and having concave ends each with a radius of curvature approximately equal to one half the distance separating said upper and lower surfaces, each end thus forming a semicircle tangent to said upper and lower surfaces, said plates being positioned so that the surfaces of said plates face said channel and converge toward said midline and so that said semi-circular ends of said plates are aligned approximately directly across said channel from one another to form lateral passages extending completely through said airway perpendicularly of said midline to facilitate fluid drainage.
Claim 8
Dependent Claim
70 words
The invention of claim 6, comprising directly opposed struts in said second section which do not extend to the outside edges of said upper and lower surfaces of said airway, the outside edge portions of said upper and lower surfaces in combination with said opposed struts defining passages at each side of said airway to serve as entrances to the oro-pharangeal cavity through which a flexible tube may be inserted.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |