US5069671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous medication
Assignee: Alza Corp
•
Filing: 1988-06-23
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Granted: 1991-12-03
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Expires: 2008-06-23
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
2026-10-27 07:26
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1407
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
99 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) particles of parenterally administrable different drugs; and, (2) a wall surrounding the parenterally administrable drugs, the wall formed of a parenterally acceptable material that releases the parenterally acceptable drugs from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
Claim 2
Dependent Claim
99 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) particles of parenterally administrable different drugs; and, (2) a wall surrounding the parenterally administrable drugs, the wall formed of a parenterally acceptable material that releases the parenterally acceptable drugs 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 drug formulation from the formulation chamber.
Claim 4
Dependent Claim
35 words
The formulation chamber for use in a parenteral delivery system according to claim 1, wherein the chamber comprises porous film that aids in controlling the rate of release of drug formulation from the formulation chamber.
Claim 5
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 parenterally administrable drug dispersed in a porous matrix; and, (2) a wall surrounding the parenterally administrable drug, the wall formed of a parenterally acceptable material that releases the parenterally acceptable drug from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
Claim 6
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 parenterally administrable drug dispersed in a porous matrix; and, (2) a wall surrounding the parenterally administrable drug, the wall formed of a parenterally acceptable material that releases the parenterally acceptable drug from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
Claim 7
Dependent Claim
35 words
The formulation chamber for use in a parenteral delivery system according to claim 4, wherein the chamber comprises a film that aids in controlling the rate of release of drug formulation from the formulation chamber.
Claim 8
Dependent Claim
36 words
The formulation chamber for use in a parenteral delivery system according to claim 4, wherein the chamber comprises a porous film that aids in controlling the rate of release of drug formulation from the formulation chamber.
Claim 9
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 plurality of microparticles of parenterally administrable drug; and, (2) a wall surrounding the parenterally administrable drug microparticles, the wall formed of a parenterally acceptable material that releases the parenterally acceptable drugs from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
Claim 10
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 plurality of microparticles of parenterally administrable drug; and, (2) a wall surrounding the parenterally administrable drug microparticles, the wall formed of a parenterally acceptable material that releases the parenterally acceptable drugs from the tiny pills into a parenterally acceptable fluid that enters the formulation chamber and contacts the tiny pills.
Claim 11
Dependent Claim
35 words
The formulation chamber for use in a parenteral delivery system according to claim 7, wherein the chamber comprises a film that aids in controlling the rate of release of drug formulation from the formulation chamber.
Claim 12
Dependent Claim
36 words
The formulation chamber for use in a parenteral delivery system according to claim 7, wherein the chamber comprises a porous film that aids in controlling the rate of release of drug formulation from the formulation chamber.
Claim 13
Dependent Claim
24 words
The formulation chamber for use in a parenteral delivery system according to claim 7, wherein the drug microparticles are dispersed in a support matrix.
Claim 14
Dependent Claim
29 words
The formulation chamber for use in a parenteral delivery system according to claim 7, wherein the drug microparticles are present in a separate support matrix for each drug microparticle.
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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) | 1994-12-02 | 1995-06-03 | 1995-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-02 | 1999-06-03 | 1999-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-02 | 2003-06-03 | 2003-12-03 | $7700.00 | Window Closed / Lapsed |