DISPENSER OF ACTIVE COMPONENT

Title:

DISPENSER OF ACTIVE COMPONENT

Document Type and Number:

Japanese Patent JPS60822

Kind Code:

A

Abstract:

The release pattern of a dispersion type active agent dispenser can be improved by forming the device from a depleted zone containing the agent at a concentration no greater than the saturation and a non-depleted zone containing the agent dispersed in the matrix at a uniform concentration greater than saturation. The depleted zone is disposed between the surface through which the agent is to be dispensed and at least a substantial portion of the non-depleted zone with the interface therebetween disposed at a nonuniform distance from the releasing surface. Certain embodiments are particularly useful for the transdermal administration of drugs.

Inventors:

AREJIYANDORO ZAFUARONI
PATORITSUKU ESU ERU UONGU

Application Number:

JP10491184A

Publication Date:

January 05, 1985

Filing Date:

May 25, 1984

Export Citation:

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Assignee:

ALZA CORP

International Classes:

B01J4/00; A61K9/20; A61K9/26; A61K9/70; A61M31/00; (IPC1-7): B01J4/00

Attorney, Agent or Firm:

Asamura Akira

Next Patent: JPS60823