Claims
- 1. A dispenser for dispensing a beneficial drug to a biological environment of use, wherein the dispenser comprises:
- (a) a wall comprising in at least a part a semipermeable composition permeble to the passage of fluid and substantially impermeable to the passage of the beneficial drug which wall surrounds;
- (b) a capsule, which capsule is a member selected from the group consisting of a hard capsule and a soft capsule;
- (c) means in the capsule for forming a dispensable composition in response to the temperature of the biological environment of use, which thermo-responsive means is a member selected from the group consisting of a wax, butter, stearate, partially hydrogenated oil, hydrogenated oil, ester, ether, polyoxyalkylene, glyceride of fatty acid, fatty acid, and copolymer of alkylene oxide;
- (d) a dosage amount of a beneficial drug present in the thermo responsive means for forming the dispensable composition;
- (e) means in the capsule for increasing in volume and for occupying an increasing amount of the capsule for urging the dispensable composition from the dispenser, said means a solid osmotically effective polymeric composition that interacts with fluid and expands; and,
- (f) at least one orifice in the dispenser for delivering the dispensable composition comprising the beneficial drug from the dispenser.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a division of U.S. Ser. No. 06/591,824 filed on Mar. 21, 1984, now abandoned.
US Referenced Citations (27)
Divisions (1)
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Number |
Date |
Country |
Parent |
591824 |
Mar 1984 |
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