Patent US4548598A successfully refreshed from Google Patents.
US4548598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parenteral agent dispensing equipment
Assignee: Alza Corp
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Filing: 1984-02-03
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Granted: 1985-10-22
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Expires: 2004-02-03
Abstract
Abstract A parenteral delivery system and a formulation chamber are disclosed for administering a beneficial agent. The parenteral delivery system comprises a drip chamber and a formulation chamber. The formulation chamber comprises a wall surrounding an internal space and it has an inlet for admitting a liquid into the formulation chamber and an outlet for letting an agent formulation leave the formulation chamber The chamber houses an agent delivery system for releasing a beneficial agent into a liquid that enters the chamber.
Inventors
- 👤 Felix Theeuwes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:31
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1407
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
A formulation chamber for use in a parenteral delivery system, comprising: (a) a wall surrounding a lumen; (b) an inlet for admitting a fluid into the chamber; (c) an outlet for letting fluid leave the chamber; and (d) a plurality of tiny pills in the chamber, the tiny pills comprising: (1) a solid core of a beneficial parenterally administrable agent; and, (2) a wall surrounding the parenterally administrable agent, the wall formed of a parenterally acceptable material that releases the parenterally acceptable agent from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
Claim 2
Dependent Claim
102 words
A formulation chamber for use in a parenteral delivery system, comprising: (a) a wall surrounding a lumen; (b) an inlet for admitting a fluid into the chamber; (c) an outlet for letting fluid leave the chamber; and (d) a plurality of tiny pills in the chamber, the tiny pills comprising: (1) a solid core of a beneficial parenterally administrable agent; and, (2) a wall surrounding the parenterally administrable agent, the wall formed of a parenterally acceptable material that releases the parenterally acceptable agent from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
Claim 3
Dependent Claim
35 words
The formulation chamber for use in a parenteral delivery system according to claim 1, wherein the chamber comprises a film that aids in controlling the rate of release of agent formulation from the formulation chamber.
Claim 4
Dependent Claim
36 words
The formulation chamber for use in a parenteral delivery system according to claim 1, wherein the chamber comprises a porous film that aids in controlling the rate of release of agent formulation from the formulation chamber.
Claim 5
Dependent Claim
29 words
The formulation chamber for use in a parenteral delivery system according to claim 1, wherein the chamber comprises a perforated grid that supports the tiny pills in the chamber.
Claim 6
Dependent Claim
30 words
The formulation chamber for use in a parenteral delivery system according to claim 1, wherein the parenteral delivery system comprises a drip chamber in fluid communication with the formulation chamber.
Claim 7
Dependent Claim
103 words
An intravenous delivery system for administering a beneficial agent intravenously to a human, comprising: (a) a container of a pharmaceutically acceptable intravenous fluid; (b) a drip chamber in fluid communication with the container for determining the rate of fluid flow through the intravenous delivery system; and, (c) a formulation chamber comprising: (1) a wall surrounding a lumen; (2) a plurality of tiny pills containing agent in the lumen; and, (3) wherein the formulation chamber is in fluid communication with the drip chamber such that fluid flows into the formulation chamber and forms with agent released by the pills an agent formulation over time.
Claim 8
Dependent Claim
103 words
An intravenous delivery system for administering a beneficial agent intravenously to a human, comprising: (a) a container of a pharmaceutically acceptable intravenous fluid; (b) a drip chamber in fluid communication with the container for determining the rate of fluid flow through the intravenous delivery system; and, (c) a formulation chamber comprising: (1) a wall surrounding a lumen; (2) a plurality of tiny pills containing agent in the lumen; and, (3) wherein the formulation chamber is in fluid communication with the drip chamber such that fluid flows into the formulation chamber and forms with agent released by the pills an agent formulation over time.
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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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |