US4586922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous system for delivering a beneficial agent
Assignee: Alza Corp
•
Filing: 1985-02-15
•
Granted: 1986-05-06
•
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
2026-10-23 15:21
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1407
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
A formulation chamber for use in an intravenous delivery system, comprising in combination: (a) a formulation chamber comprising: a wall surrounding a lumen; an inlet for admitting fluid into the chamber; and, an outlet for letting fluid leave the chamber; and, (b) a device for delivering a beneficial agent in the chamber, the device comprising: an inner flexible container containing a beneficial agent, a layer of an osmotically effective solute at least partly encapsulating the container, an outer wall surrounding the container and formed of a material permeable to the passage of fluid and substantially impermeable to the passage of solute, and a passageway communicating with the container and the exterior of the device for delivering the agent at a rate controlled by the device into the formulation chamber over a prolonged period of time.
Claim 2
Dependent Claim
135 words
A formulation chamber for use in an intravenous delivery system, comprising in combination: (a) a formulation chamber comprising: a wall surrounding a lumen; an inlet for admitting fluid into the chamber; and, an outlet for letting fluid leave the chamber; and, (b) a device for delivering a beneficial agent in the chamber, the device comprising: an inner flexible container containing a beneficial agent, a layer of an osmotically effective solute at least partly encapsulating the container, an outer wall surrounding the container and formed of a material permeable to the passage of fluid and substantially impermeable to the passage of solute, and a passageway communicating with the container and the exterior of the device for delivering the agent at a rate controlled by the device into the formulation chamber over a prolonged period of time.
Claim 3
Dependent Claim
47 words
The formulation chamber for use in an intravenous delivery system according to claim 1, wherein when the chamber is a member of the system, the device delivers the agent at a rate controlled by the device into a fluid that enters the formulation chamber from the system.
Claim 4
Dependent Claim
48 words
The formulation chamber for use in an intravenous delivery system according to claim 1, wherein when the chamber is a member of the system, the device delivers the agent a rate controlled by the device into a fluid provided by the system and flows through the formulation chamber.
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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) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |