US4853229A
Expired / Lapsed
US
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Method for adminstering tiny pills
Assignee: Alza Corp
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Filing: 1987-10-26
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Granted: 1989-08-01
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Expires: 2007-10-26
Abstract
Abstract A delivery system is disclosed for delivering a beneficial agent to an environment of use. The delivery system comprises a plurality of tiny dosage forms comprising a beneficial agent. The delivery system also comprises means for maintaining (a) the physical and chemical integrity of the dosage forms and for (b) inhibiting delivery of the beneficial agent during non-performance of the delivery system.
Inventors
- 👤 Felix Theeuwes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:40
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/0002; A61K9/0004; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5031; A61K9/5036; A61K9/5042; A61K9/5047; A61K9/5073; A61K9/5078
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
145 words
A method for delivering a beneficial drug to the gastrointestinal environment of an animal, which method comprises: (A) admitting into the gastrointestinal environment of an animal a pharmaceutically acceptable liquid carrier comprising: (1) a plurality of tiny pills comprising: (a) a beneficial drug; and (b) wall means for controlling the release of the beneficial drug from the tiny pills, which wall means surrounds the beneficial drug; and, (2) means in the pharmaceutically acceptable liquid for delaying the release of the beneficial drug from the tiny pills; (B) contacting the pharmaceutically acceptable liquid by the gastrointestinal environment thereby substantially decreasing the ability of the means in the pharmaceutically acceptable liquid for delaying the release of drug from he tiny pills; and (C) delivering the drug by the tiny pills releasing the drug at a controlled rate to the gastrointestinal environment over a prolonged period of time.
Claim 2
Independent Claim
145 words
A method for delivering a beneficial drug to the gastrointestinal environment of an animal, which method comprises: (A) admitting into the gastrointestinal environment of an animal a pharmaceutically acceptable liquid carrier comprising: (1) a plurality of tiny pills comprising: (a) a beneficial drug; and (b) wall means for controlling the release of the beneficial drug from the tiny pills, which wall means surrounds the beneficial drug; and, (2) means in the pharmaceutically acceptable liquid for delaying the release of the beneficial drug from the tiny pills; (B) contacting the pharmaceutically acceptable liquid by the gastrointestinal environment thereby substantially decreasing the ability of the means in the pharmaceutically acceptable liquid for delaying the release of drug from he tiny pills; and (C) delivering the drug by the tiny pills releasing the drug at a controlled rate to the gastrointestinal environment over a prolonged period of time.
Claim 3
Dependent Claim
24 words
The method for delivering the beneficial drug to the gastrointestinal environment of an animal according to claim 1, wherein the animal is a human.
Claim 4
Dependent Claim
49 words
The method for delivering the beneficial drug to the gastrointestinal environment of an animal according to claim 1, wherein the means in the pharmaceutically acceptable liquid for delaying the release of drug from the tiny pills is a member selected from the group consisting of isotonic and hypertonic fluids.
Claim 5
Dependent Claim
48 words
The method for delivering the beneficial drug to the gastrointestinal environment of an animal according to claim 1, wherein the means in the pharmaceutically acceptable liquid for delaying the release of drug initially comprises a concentration substantially equal to the concentration of the drug in the tiny pills.
Claim 6
Dependent Claim
48 words
The method for delivering the beneficial drug to the gastrointestinal environment of an animal according to claim 1, wherein the means in the pharmaceutically acceptable liquid for delaying the release of drug comprises an osmotic pressure greater than the osmotic pressure of the drug in the tiny pills.
Claim 7
Dependent Claim
51 words
The method for delivering the beneficial drug to the gastrointestinal environment of an animal according to claim 1, wherein the means in the pharmaceutically acceptable liquid for delaying the release of drug comprises an osmotic pressure that is substantially equal to the osmotic pressure of the drug in the tiny pills.
Claim 8
Dependent Claim
43 words
The method for delivering the beneficial drug to the gastrointestinal environment of an animal according to claim 1, wherein the wall means of the tiny pills release the drug by process selected from the group consisting of osmosis, diffusion, bioerosion, disintegration and metabolism.
Claim 9
Dependent Claim
41 words
The method for delivering the beneficial drug to the gastrointestinal environment of an animal according to claim 1, wherein the wall means of the tiny pills comprises a member selected from the group consisting of semipermeable, diffusional, porous, and bioerodible composition.
Claim 10
Independent Claim
129 words
A method for delivering a beneficial drug to the gastrointestinal environment of an animal, wherein the method comprises: (A) admitting orally into the gastrointestinal environment of the animal a drug dispensing means comprising a plurality of tiny pills and a pharmaceutically acceptable liquid carrier having a pH that substantially retards the release of drug from the tiny pills, the tiny pills comprising; (1) a gastrointestinal administrable drug; (2) a wall comprising in at least a part a composition for governing the release of drug from the tiny pills; and, (B) changing the pH of the carrier by contacting it with gastrointestinal fluid thereby activating the wall of the tiny pills to release drug; and, (C) delivering the drug from the tiny pills to the gastrointestinal environment of the animal.
Claim 11
Independent Claim
129 words
A method for delivering a beneficial drug to the gastrointestinal environment of an animal, wherein the method comprises: (A) admitting orally into the gastrointestinal environment of the animal a drug dispensing means comprising a plurality of tiny pills and a pharmaceutically acceptable liquid carrier having a pH that substantially retards the release of drug from the tiny pills, the tiny pills comprising; (1) a gastrointestinal administrable drug; (2) a wall comprising in at least a part a composition for governing the release of drug from the tiny pills; and, (B) changing the pH of the carrier by contacting it with gastrointestinal fluid thereby activating the wall of the tiny pills to release drug; and, (C) delivering the drug from the tiny pills to the gastrointestinal environment of the animal.
Claim 12
Independent Claim
156 words
A method for delivering a beneficial drug to the gastrointestinal environment of a warm-blooded animal, wherein the method comprises: (A) admitting orally into the gastrointestinal environment of the animal a delivery system comprising: (1) a plurality of tiny pills comprising; (a) a drug; (b) a wall comprising in at least a part a composition for controlling the release of drug from the tiny pills; (2) a pharmaceutically acceptable carrier comprising a liquid comprising the tiny pills; (3) means in the carrier for delaying the release of drug from the tiny pills, said means comprising a concentration initially substantially equal to the concentration of drug in the tiny pills; (B) diluting the carrier with gastrointestinal fluid to decrease the concentration of the means in the liquid, thereby causing the tiny pills to release drug through the wall of the tiny pills; and (C) delivering the drug from the tiny pills to the gastrointestinal tract of the animal.
Claim 13
Independent Claim
156 words
A method for delivering a beneficial drug to the gastrointestinal environment of a warm-blooded animal, wherein the method comprises: (A) admitting orally into the gastrointestinal environment of the animal a delivery system comprising: (1) a plurality of tiny pills comprising; (a) a drug; (b) a wall comprising in at least a part a composition for controlling the release of drug from the tiny pills; (2) a pharmaceutically acceptable carrier comprising a liquid comprising the tiny pills; (3) means in the carrier for delaying the release of drug from the tiny pills, said means comprising a concentration initially substantially equal to the concentration of drug in the tiny pills; (B) diluting the carrier with gastrointestinal fluid to decrease the concentration of the means in the liquid, thereby causing the tiny pills to release drug through the wall of the tiny pills; and (C) delivering the drug from the tiny pills to the gastrointestinal tract of the animal.
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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) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |