Patent US4740103A successfully refreshed from Google Patents.
US4740103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous system for delivering a beneficial agent
Assignee: Alza Corp
•
Filing: 1985-02-15
•
Granted: 1988-04-26
•
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 18:07
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1407
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
An intravenous delivery system for administering an agent formulation to a patient comprising in combination: (a) a reservoir of a pharmaceutically acceptable liquid; (b) an agent formulation chamber comprising: (1) an inlet that communicates with the reservoir to permit the liquid to flow from the reservoir into the chamber, and (2) an oulet through which the liquid exits the chamber; (c) a rate-controlled dosage form of the agent in the chamber and in communication with the liquid flowing through the chamber, which dosage form releases the agent into the liquid at a predetermined rate over time; and, (d) a conduit that communicates with the chamber and extends to the patient.
Claim 2
Dependent Claim
110 words
An intravenous delivery system for administering an agent formulation to a patient comprising in combination: (a) a reservoir of a pharmaceutically acceptable liquid; (b) an agent formulation chamber comprising: (1) an inlet that communicates with the reservoir to permit the liquid to flow from the reservoir into the chamber, and (2) an oulet through which the liquid exits the chamber; (c) a rate-controlled dosage form of the agent in the chamber and in communication with the liquid flowing through the chamber, which dosage form releases the agent into the liquid at a predetermined rate over time; and, (d) a conduit that communicates with the chamber and extends to the patient.
Claim 3
Dependent Claim
24 words
The intravenous delivery system according to claim 1 wherein the liquid is an aqueous liquid and the dosage form is an osmotic dosage form.
Claim 4
Dependent Claim
22 words
The intravenous delivery system according to claim wherein the system comprises a drip chamber that communicates with the reservoir and the chamber.
Claim 5
Dependent Claim
32 words
The intravenous delivery system according to claim 1 wherein the rate-controlled dosage form release the agent at a rate that is essentially independent of the volume of liquid flow through the chamber.
Claim 6
Dependent Claim
14 words
The intravenous delivery system according to claim 1 wherein the system comprises a filter.
References Cited (Backward Citations)
US2954028A
Cited
US3001525A
Cited
GB982107A
Cited
US3305446A
Cited
CH497181A
Cited
US3322114A
Cited
US4061141A
Cited
US3993073A
Cited
US3854480A
Cited
US3797494A
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
US4323457A
Cited
US4217894A
Cited
US4233973A
Cited
US4256104A
Cited
US4465471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |