US4741734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasing means for adding agent using releasing means to IV fluid
Assignee: Alza Corp
•
Filing: 1985-02-15
•
Granted: 1988-05-03
•
Expires: 2005-02-15
Abstract
Abstract A formulation chamber is disclosed comprising a wall surrounding a lumen containing a device for delivering a beneficial agent. The chamber has an inlet for admitting a fluid into the chamber and an outlet for letting an agent formulation leave the chamber. The chamber is adapted for use in an intravenous delivery system for delivering an agent formulation to a patient.
Inventors
- 👤 Felix Theeuwes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:27
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1407
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A formulation chamber adapted for communication with a drip chamber, the formulation chamber comprising: (a) a wall that surrounds and defines; (b) a lumen for containing an intravenously administrable beneficial agent; (c) an inlet for admitting a pharmaceutically acceptable liquid into the lumen; (d) an outlet for letting pharmaceutical liquid leave lumen; and, (e) means in the lumen for releasing a beneficial agent present in the lumen into the pharmaceutical liquid that enters the lumen, said means releasing the agent at a rate controlled by the means and substantially independent of the volume rate of pharmaceutical liquid that flows through the lumen.
Claim 2
Dependent Claim
102 words
A formulation chamber adapted for communication with a drip chamber, the formulation chamber comprising: (a) a wall that surrounds and defines; (b) a lumen for containing an intravenously administrable beneficial agent; (c) an inlet for admitting a pharmaceutically acceptable liquid into the lumen; (d) an outlet for letting pharmaceutical liquid leave lumen; and, (e) means in the lumen for releasing a beneficial agent present in the lumen into the pharmaceutical liquid that enters the lumen, said means releasing the agent at a rate controlled by the means and substantially independent of the volume rate of pharmaceutical liquid that flows through the lumen.
References Cited (Backward Citations)
US2954028A
Cited
US3001525A
Cited
GB982107A
Cited
US3305446A
Cited
CH497181A
Cited
US3322114A
Cited
US4061141A
Cited
US3797494A
Cited
US3993073A
Cited
US3854480A
Cited
US3995631A
Cited
US3797485A
Cited
US3756237A
Cited
US3760984A
Cited
US3948254A
Cited
US3756390A
Cited
US3845770A
Cited
US3921636A
Cited
US4177256A
Cited
US3848603A
Cited
US3921635A
Cited
US3941126A
Cited
US3993072A
Cited
US3976068A
Cited
US4203439A
Cited
US4111202A
Cited
US4323457A
Cited
US4256108A
Cited
US4217894A
Cited
US4233973A
Cited
US4256104A
Cited
US4456471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |