Patent US3869771A successfully refreshed from Google Patents.
US3869771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for regulating positive end expiratory pressure
Assignee: Individual
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Filing: 1973-10-17
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Granted: 1975-03-11
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Expires: 1993-10-17
Abstract
Abstract A device for regulating the positive end expiratory pressure of a patient under anesthesia is disclosed. The device is suitable for insertion into an anesthesia circuit and comprises an enclosed container separated into two chambers by a wall terminating below the top of the container. A liquid contained in the container is movable between the two chambers by passing over the wall when the container is tilted. The container top has two openings through which two tubes project. A long tube extends downwardly and terminates at the bottom of one chamber and a short tube terminates near the top of the container. Air exhausted by the patient passes downwardly through the long tube and bubbles upwardly through the liquid located in the associated chamber of the container. The air, after bubbling upwardly, exhausts through the short tube. The level of liquid through which the exhausted air bubbles creates a resistance which regulates positive end expiratory pressure.
Inventors
- 👤 Charles W Bollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:16
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/20; A61M16/208; A61M16/01; A61M16/08; A61M16/0816; A63; A63B; A63B23/00; A63B23/18; A61M16/0057; A61M16/0078; A61M16/22; A61M2205/00; A61M2205/33; A61M2205/3331; A61M2205/3348
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
137 words
A device for regulating positive end expiratory pressure comprising: an enclosed container divided into two chambers by a wall, said wAll allowing a liquid housed in said container to be moved between said two chambers when said container is tilted in a predetermined manner from a normal upright position; a liquid housed in said chambers of said container; a first tube extending into one of said chambers, said first tube being attached to the bottom of said one of said chambers and including apertures located adjacent the end attached to the bottom of one of said chambers, said apertures communicating between the interior of said first tube and the interior of said one of said chambers; and, a second tube extending into said container so as to have one end terminate above said liquid in said chambers.
Claim 2
Independent Claim
137 words
A device for regulating positive end expiratory pressure comprising: an enclosed container divided into two chambers by a wall, said wAll allowing a liquid housed in said container to be moved between said two chambers when said container is tilted in a predetermined manner from a normal upright position; a liquid housed in said chambers of said container; a first tube extending into one of said chambers, said first tube being attached to the bottom of said one of said chambers and including apertures located adjacent the end attached to the bottom of one of said chambers, said apertures communicating between the interior of said first tube and the interior of said one of said chambers; and, a second tube extending into said container so as to have one end terminate above said liquid in said chambers.
Claim 3
Independent Claim
137 words
A device for regulating positive end expiratory pressure comprising: an enclosed container divided into two chambers by a wall, said wAll allowing a liquid housed in said container to be moved between said two chambers when said container is tilted in a predetermined manner from a normal upright position; a liquid housed in said chambers of said container; a first tube extending into one of said chambers, said first tube being attached to the bottom of said one of said chambers and including apertures located adjacent the end attached to the bottom of one of said chambers, said apertures communicating between the interior of said first tube and the interior of said one of said chambers; and, a second tube extending into said container so as to have one end terminate above said liquid in said chambers.
Claim 4
Independent Claim
137 words
A device for regulating positive end expiratory pressure comprising: an enclosed container divided into two chambers by a wall, said wAll allowing a liquid housed in said container to be moved between said two chambers when said container is tilted in a predetermined manner from a normal upright position; a liquid housed in said chambers of said container; a first tube extending into one of said chambers, said first tube being attached to the bottom of said one of said chambers and including apertures located adjacent the end attached to the bottom of one of said chambers, said apertures communicating between the interior of said first tube and the interior of said one of said chambers; and, a second tube extending into said container so as to have one end terminate above said liquid in said chambers.
Claim 5
Dependent Claim
50 words
A device for regulating positive end expiratory pressure as claimed in claim 1, including a connection means connected to the other ends of said tubes which prevents communication between the other ends of said tubes and is adapted for connecting the other ends of said tubes into an anesthesia circuit.
Claim 6
Dependent Claim
34 words
A device for regulating positive end expiratory pressure as claimed in claim 2, wherein said container is enclosed by a top and wherein said first and second tubes pass through apertures in said top.
Claim 7
Dependent Claim
41 words
A device for regulating positive end expiratory pressure as claimed in claim 3, wherein said wall terminates below the top of said container so as to provide an aperture between the top of said container and the top of said wall.
Claim 8
Dependent Claim
42 words
A device for regulating positive end expiratory pressure as claimed in claim 4, wherein said container is translucent and including graduations associated with said one of said chambers whereby said liquid level in said one of said chambers can be easily determined.
Claim 9
Dependent Claim
85 words
A device for regulating positive end expiratory pressure as claimed in claim 5, wherein said attachment means is a split-T having an input end, an output end and two legs, one leg being associated with said input end and the other being associated with said output end, the leg associated with said input end being connected to said first tube and the leg associated with said output end being connected to said second tube, said split-T including a wall separating said ends from one another.
Claim 10
Dependent Claim
41 words
A device for regulating positive end expiratory pressure as claimed in claim 1, wherein said wall terminates below the top of said container so as to provide an aperture between the top of said container and the top of said wall.
References Cited (Backward Citations)
US3661143A
Cited
US3699815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |