Patent US1745939A successfully refreshed from Google Patents.
US4536201A
Expired / Lapsed
US
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System for venting gases in fluids passing through a conduit
Assignee: Gambro Lundia AB
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Filing: 1984-04-24
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Granted: 1985-08-20
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Expires: 2004-04-24
Abstract
Abstract An apparatus as disclosed for the venting of gases contained in fluids passing through a primary conduit in connection with medical treatments comprising throttling means interposed in the primary conduit, pump means downstream of the throttling means for drawing the fluid through said primary conduit, means for enhanced bubble formation in the fluid positioned between the throttling means and pump means in the primary conduit, and venting means disposed in the primary conduit downstream of the pump means, the venting means for removing gaseous bubbles from the fluid when the fluid is passed therethrough.
Inventors
- 👤 Fritz L. Brorsson
- 👤 Bengt A. G. Dahlberg
- 👤 Bengt M. Holmberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:30
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/16; A61M1/1654; A61M1/1656; A61M1/1658
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
110 words
An apparatus for the venting of gases contained in the fluid passing through a primary conduit in connection with medical treatments comprising: throttling means interposed in said primary conduit; pump means downstream of said throttling means for drawing said fluid through said primary conduit; means for enhanced bubble formation in said fluid positioned between said throttling means and pump means in said primary conduit; a shunt conduit in fluid communication with said means for enhanced bubble formation and said primary conduit; and venting means disposed in said primary conduit downstream of said pump means, said venting means for removing gaseous bubbles from said fluid when said fluid is passed therethrough.
Claim 2
Independent Claim
110 words
An apparatus for the venting of gases contained in the fluid passing through a primary conduit in connection with medical treatments comprising: throttling means interposed in said primary conduit; pump means downstream of said throttling means for drawing said fluid through said primary conduit; means for enhanced bubble formation in said fluid positioned between said throttling means and pump means in said primary conduit; a shunt conduit in fluid communication with said means for enhanced bubble formation and said primary conduit; and venting means disposed in said primary conduit downstream of said pump means, said venting means for removing gaseous bubbles from said fluid when said fluid is passed therethrough.
Claim 3
Dependent Claim
44 words
The apparatus for the venting of gases as defined in claim 1, wherein said means for enhanced bubble formation comprises an expansion chamber having an inlet port and an outlet port, said inlet port positioned lower in said expansion chamber than said outlet port.
Claim 4
Dependent Claim
31 words
The apparatus for the venting of gases as defined in claim 2, further comprising a non-return valve positioned in said primary conduit downstream of said outlet port from said expansion chamber.
Claim 5
Independent Claim
41 words
The apparatus for venting of gases as defined in claims 2 or 3, wherein said shunt conduit is in fluid communication with said expansion chamber at a point in said expansion chamber capable of emptying said expansion chamber of said liquid.
Claim 6
Independent Claim
44 words
The apparatus for venting of gases as defined in claims 2 or 3, further comprising a valve positioned on said shunt conduit adapted to close said shunt conduit at a negative working pressure and open when said negative pressure rises to nominally lower values.
Claim 7
Dependent Claim
33 words
The apparatus for venting gases as defined in claim 5, wherein said valve is comprised of a compressible tube, said tube being compressed together to close said shunt conduit at normal working pressure.
Claim 8
Dependent Claim
35 words
The apparatus for venting of gases as defined in claim 6, further comprising a pinch device positioned on said compressible tube, said pinch device capable of entirely collapsing said compressible tube at normal working pressure.
Claim 9
Dependent Claim
41 words
The apparatus for venting of gases as defined in claim 1, wherein said venting means comprises a venting chamber having an inlet port and an outlet port, said inlet port being positioned higher in said venting chamber than said outlet port.
Claim 10
Dependent Claim
24 words
The apparatus for venting of gases as described in claim 8, wherein said inlet port is positioned tangentially with respect to said venting chamber.
Claim 11
Dependent Claim
31 words
The apparatus for venting of gases as described claim 9, wherein said outlet port is positioned tangentially in countercurrent to a vortex formation of the fluid produced by said inlet port.
Claim 12
Dependent Claim
57 words
The apparatus for venting of gases as defined in claim 1, wherein said venting chamber is provided with a venting outlet positioned at the highest point of said venting chamber for emitting gases contained in said chamber, and a float valve positioned in said venting chamber to prevent said fluid from being sucked out through said outlet.
Claim 13
Dependent Claim
16 words
The apparatus for venting gases as defined in claim 1, wherein said throttling means is adjustable.
Claim 14
Dependent Claim
26 words
The apparatus for venting of gases from a liquid as defined in claim 1, further comprising a suction pump means positioned downstream from said venting chamber.
Claim 15
Dependent Claim
44 words
The apparatus for venting of gases from a liquid as defined in claim 12, wherein said suction pump means downstream from said venting chamber draws said liquid through said shunt conduit when said negative pressure in said system is of a nominally lower value.
Claim 16
Independent Claim
139 words
An apparatus for the venting of gases contained in a fluid passing through a primary conduit in connection with medical treatments comprising: throttling means interposed in said primary conduit; pump means downstream of said throttling means for drawing said fluid through said primary conduit; an expansion chamber having an inlet port and an outlet port, said expansion chamber positioned between said throttling means and pump means in said primary conduit; a shunt conduit in fluid communication with said expansion chamber, said shunt conduit connected at a point in said expansion chamber capable of emptying said expansion chamber of said liquid in said primary conduit in cooperation with said pump means; and venting means disposed in said primary conduit downstream of said pump means, said venting means for removing gaseous bubbles from said fluid when said fluid is passed therethrough.
Claim 17
Independent Claim
139 words
An apparatus for the venting of gases contained in a fluid passing through a primary conduit in connection with medical treatments comprising: throttling means interposed in said primary conduit; pump means downstream of said throttling means for drawing said fluid through said primary conduit; an expansion chamber having an inlet port and an outlet port, said expansion chamber positioned between said throttling means and pump means in said primary conduit; a shunt conduit in fluid communication with said expansion chamber, said shunt conduit connected at a point in said expansion chamber capable of emptying said expansion chamber of said liquid in said primary conduit in cooperation with said pump means; and venting means disposed in said primary conduit downstream of said pump means, said venting means for removing gaseous bubbles from said fluid when said fluid is passed therethrough.
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) | 1988-08-19 | 1989-02-18 | 1989-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-19 | 1993-02-18 | 1993-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-19 | 1997-02-18 | 1997-08-20 | $7700.00 | Window Closed / Lapsed |