Dispensing devices powered by hydrogel

Details Dispensing devices powered by hydrogel Dispensing devices powered by hydrogel

1996-04-19

1998-08-11

Venkat, Jyothsan

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Tablets, lozenges, or pills

424464, 424467, 424473, 424489, 424494, A61K 936

Patent

active

057924716

ABSTRACT:
This invention relates to devices useful for the controlled delivery of one or more beneficial agents to an environment of use. More specifically, this invention concerns such devices which are powered by hydrogel. This invention also relates to the controlled delivery of one or more beneficial agents to an aqueous environment of use through the use of such hydrogel powered dispensing devices. Also disclosed are methods for the controlled delivery of one or more beneficial agents to an aqueous environment of use which comprises administering to or otherwise placing the devices of this invention in the environment of use.

REFERENCES:
patent: 4235236 (1980-11-01), Theeuwes
patent: 4320759 (1982-03-01), Theeuwes
patent: 4327725 (1982-05-01), Cortese et al.
patent: 4578075 (1986-03-01), Urquhart et al.
patent: 4615698 (1986-10-01), Guittard et al.
patent: 4723957 (1988-02-01), Magruder et al.
patent: 4842867 (1989-06-01), Ayer et al.

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