US4439189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pleural drainage system
Assignee: Baxter International Inc
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Filing: 1981-06-18
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Granted: 1984-03-27
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Expires: 2001-06-18
Abstract
Abstract A system for draining pleural cavities. A container having a plurality of cavities is employed with a vacuum source and an inlet from the patient. In the first cavity, a port is defined to limit the liquid contained therein. This port opens into a second cavity for collection of drained fluids. A vacuum regulator mechanism is incorporated at one end of the container to prevent injury to the patient. Thus, a water seal is defined about the inlet tube. A separate cavity collects drained fluids and a third area provides vacuum control.
Inventors
- 👤 John E. Sargeant
- 👤 Jack L. Hoffa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/60; A61M1/61; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
A pleural drainage system, comprising a container having a first cavity, a second cavity, and a wall therebetween, said wall having a port, the lower edge of said port defining a first level, said port allowing unrestricted fluid communication above said first level between said first and second cavities; an inlet tube extending downwardly into said first cavity to an opening at a second level below said first level; a third cavity in said inlet tube, said third cavity having a volume greater than the volume of said first cavity below said first level; and a vacuum source above said first level.
Claim 2
Dependent Claim
102 words
A pleural drainage system, comprising a container having a first cavity, a second cavity, and a wall therebetween, said wall having a port, the lower edge of said port defining a first level, said port allowing unrestricted fluid communication above said first level between said first and second cavities; an inlet tube extending downwardly into said first cavity to an opening at a second level below said first level; a third cavity in said inlet tube, said third cavity having a volume greater than the volume of said first cavity below said first level; and a vacuum source above said first level.
Claim 3
Dependent Claim
140 words
A pleural drainage system, comprising a container having a first cavity, a second cavity positioned adjacent and extending below said first cavity, and a wall therebetween, said wall having a port, the lower edge of said port defining a first level, said port allowing unrestricted fluid communication above said first level from said first cavity to said second cavity between said first and second cavity; an inlet tube extending downwardly into said first chamber to an opening at a second level below said first level; a third cavity in said inlet tube, said third cavity having a volume exceeding the volume of said first cavity below said first level, said third cavity being positioned above said first level; and a vacuum source above said first level in said first cavity and in communication with said second cavity through said port.
Claim 4
Dependent Claim
140 words
A pleural drainage system, comprising a container having a first cavity, a second cavity positioned adjacent and extending below said first cavity, and a wall therebetween, said wall having a port, the lower edge of said port defining a first level, said port allowing unrestricted fluid communication above said first level from said first cavity to said second cavity between said first and second cavity; an inlet tube extending downwardly into said first chamber to an opening at a second level below said first level; a third cavity in said inlet tube, said third cavity having a volume exceeding the volume of said first cavity below said first level, said third cavity being positioned above said first level; and a vacuum source above said first level in said first cavity and in communication with said second cavity through said port.
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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) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |