US3881479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating device for use in anesthesiology
Assignee: Individual
•
Filing: 1974-03-13
•
Granted: 1975-05-06
•
Expires: 1994-03-13
Abstract
Abstract A patient ventilating device, for use in anesthesiology, comprises a cannula having an oxygen jet tube connected thereto so as to terminate within the lumen of the cannula and to be directed towards an outlet end thereof, the cannula being surrounded by a cuff adapted to be inflated to retain the device in position in the patient''s trachea.
Inventors
- 👤 Edward Carden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:56
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0463; A61M16/0096; Y; Y10; Y10S; Y10S128/00; Y10S128/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A ventilating device connected to a supply of high pressure oxygen for use in anaesthesiology comprising: a cannula having a lumen approximately 6.5 cm. in axial length, an oxygen jet tube disposed within and connected to the cannula and terminating within the lumen thereof, the jet tube being directed toward an outlet end of the cannula, the oxygen jet tube being of a smaller diameter than the diameter of the lumen, an inflatable cuff circumscribing the cannula with the axial length of the cannula being slightly in excess of the length of the cuff, the supply of high pressure oxygen communicating with the jet tube for facilitating respiration in A patient.
Claim 2
Dependent Claim
111 words
A ventilating device connected to a supply of high pressure oxygen for use in anaesthesiology comprising: a cannula having a lumen approximately 6.5 cm. in axial length, an oxygen jet tube disposed within and connected to the cannula and terminating within the lumen thereof, the jet tube being directed toward an outlet end of the cannula, the oxygen jet tube being of a smaller diameter than the diameter of the lumen, an inflatable cuff circumscribing the cannula with the axial length of the cannula being slightly in excess of the length of the cuff, the supply of high pressure oxygen communicating with the jet tube for facilitating respiration in A patient.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1 wherein the oxygen jet tube extends along the interior of and substantially parallel to the axis of the cannula.
Claim 4
Dependent Claim
17 words
A device as claimed in claim 2 wherein the cannula terminates obliquely to define a tip thereon.
Claim 5
Dependent Claim
37 words
A device as claimed in claim 3 wherein the jet tube extends through the wall of the cannula at a location whose orientation, about the axis of the cannula, is approximately 90* from that of the tip.
Claim 6
Dependent Claim
49 words
A device as claimed in claim 1 wherein the oxygen jet tube is connected by way of a blow gun incorporating a depressible operating button for permitting oxygen flow to the jet tube from a pressure reducing valve and oxygen flow intermittently to the jet tube under manual control.
Claim 7
Dependent Claim
28 words
A device as claimed in claim 1 wherein the cuff is inflatable by way of an inflating tube which extends to the cannula alongside the oxygen jet tube.
Claim 8
Dependent Claim
22 words
A device as claimed in claim 6 wherein the inflating tube is provided with a plug whereby it may be blanked off.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |