US4717403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid trap for medical application
Assignee: SPACE-LABS Inc 4200 150TH NE P O BOX 97013 REDMOND WASHINGTON 98073-9713 A CORP OF CALIFORNIA
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Filing: 1986-04-17
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Granted: 1988-01-05
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Expires: 2006-04-17
Abstract
Abstract A water trap for use in a capnographic sampling line is disclosed. It includes a main body, a liquid collection chamber in communication with ambient atmosphere through a first channel, a cylindrically shaped separation chamber which communicates at a first end with ambient atmosphere through the top of the main body and at its end opposite the first end with the collection chamber, and a sampling gas input channel in communication with ambient atmosphere and which extends into the separation chamber tangentially to the interior wall thereof.
Inventors
- 👤 Pradip V. Choksi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:46
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/097; A61M; A61M2209/00; A61M2209/08; A61M2209/082; Y; Y10; Y10S; Y10S55/00; Y10S55/35
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
An apparatus for separating liquid from gas in a sampled airstream from a patient, comprising: a moisture collection cup; and moisture separation means mounted on said moisture collection cup, said moisture separation means having: (a) a cylindrical separation chamber having a volume that is substantially smaller than the volume of said collection cup; (b) an input channel tangentially open to the interior of said separation chamber; (c) a gas outlet port positioned above said input channel; (d) a moisture outlet channel positioned below said input channel and extending between said separation chamber and moisture collection cup, said separation chamber being devoid of any physical structure between said input channel and gas outlet part; and (e) a channel extending into the upper portion of said moisture collection cup.
Claim 2
Independent Claim
127 words
An apparatus for separating liquid from gas in a sampled airstream from a patient, comprising: a moisture collection cup; and moisture separation means mounted on said moisture collection cup, said moisture separation means having: (a) a cylindrical separation chamber having a volume that is substantially smaller than the volume of said collection cup; (b) an input channel tangentially open to the interior of said separation chamber; (c) a gas outlet port positioned above said input channel; (d) a moisture outlet channel positioned below said input channel and extending between said separation chamber and moisture collection cup, said separation chamber being devoid of any physical structure between said input channel and gas outlet part; and (e) a channel extending into the upper portion of said moisture collection cup.
Claim 3
Dependent Claim
62 words
The apparatus of claim 1, further comprising: an annular wall portion integrally formed with said moisture separation means and extending downwardly therefrom to receive said moisture collection cup, said annular wall portion comprising at least one outer circumferential groove, said apparatus further comprising: an O-ring positioned in said at least one groove to form a fluid seal with said moisture separation cup.
Claim 4
Dependent Claim
43 words
The apparatus of claim 1 wherein said apparatus further comprises a plug disposed to fit within the upper end of said separation chamber and extending only partway down said separation chamber, said plug comprising a channel therethrough to form said gas outlet 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) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |