US4681606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drip chamber
Assignee: Terumo BCT Inc
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Filing: 1986-02-26
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Granted: 1987-07-21
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Expires: 2006-02-26
Abstract
Abstract A flow-through chamber for conveying blood including an elongated container having sides, a top and a bottom for mounting with its longitudinal axis in a vertical orientation, an inflow tube formed integrally with the container, extending vertically along a side of the container and entering the container through a chamber inlet at a flow direction transverse to the longitudinal axis and at a location spaced from the bottom of the chamber, and an outflow tube formed integrally with the chamber, extending vertically along a side of the container and entering the container at its bottom at a chamber outlet.
Inventors
- 👤 Jack C. Swan, Jr.
- 👤 Paolo Poggioli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:24
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3627
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
74 words
An in-line flow-through chamber for conveying blood comprising an elongated container having sides, a top and a bottom for mounting with its longitudinal axis in a vertical orientation, an inflow tube formed integrally with said container, extending upward vertically along a side of said container and entering said container through a chamber inlet at a flow direction transverse to said longitudinal axis and at a location spaced from the bottom of said chamber, and
Claim 2
Dependent Claim
74 words
An in-line flow-through chamber for conveying blood comprising an elongated container having sides, a top and a bottom for mounting with its longitudinal axis in a vertical orientation, an inflow tube formed integrally with said container, extending upward vertically along a side of said container and entering said container through a chamber inlet at a flow direction transverse to said longitudinal axis and at a location spaced from the bottom of said chamber, and
Claim 3
Dependent Claim
110 words
An outflow tube formed integrally with said chamber, extending vertically along a side of said container so that tubes attached to said inflow tube and said outflow tube are in line with each other, said outflow tube having its entrance at the bottom of said container and extending upward, said container providing a storage volume with uninhibited flow from said inflow tube to said outflow tube, said container including a port at the top of said container for communication with a pressure monitor, whereby said port is at a position spaced from the direction of flow of blood into said container to avoid directing spurts of blood to said port.
Claim 4
Dependent Claim
110 words
An outflow tube formed integrally with said chamber, extending vertically along a side of said container so that tubes attached to said inflow tube and said outflow tube are in line with each other, said outflow tube having its entrance at the bottom of said container and extending upward, said container providing a storage volume with uninhibited flow from said inflow tube to said outflow tube, said container including a port at the top of said container for communication with a pressure monitor, whereby said port is at a position spaced from the direction of flow of blood into said container to avoid directing spurts of blood to said port.
Claim 5
Dependent Claim
16 words
The chamber of claim 1 wherein said bottom of said container slopes toward said chamber outlet.
Claim 6
Dependent Claim
21 words
The chamber of claim 1 wherein said chamber inlet is about half-way between the bottom and the top of said container.
Claim 7
Dependent Claim
21 words
The chamber of claim 1 wherein said container also has a port at its top for supplying liquid to said container.
Claim 8
Dependent Claim
21 words
The chamber of claim 1 wherein said container and integral inflow tube and outflow tube are formed of blow molded plastic.
Claim 9
Dependent Claim
15 words
The chamber of claim 5 wherein said elongated container has a generally circular horizontal cross-section.
References Cited (Backward Citations)
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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) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |