Device for sustained release of active substance

Details Device for sustained release of active substance Device for sustained release of active substance

A - Human Necessities

61

K

128/104, 128/51

A61K 9/22 (2006.01) A61F 6/08 (2006.01) A61K 9/00 (2006.01) A61M 31/00 (2006.01) A61M 25/00 (2006.01)

Patent

CA 1257824

ABSTRACT DEVICE FOR SUSTAINED RELEASE OF ACTIVE SUBSTANCE A device for the sustained release of active substance comprises a wall defining a cavity for the reception of active substance, the wall being of impermeable material and having one or more ports therethrough. Sections of hydrogel material are within the cavity, the hydrogel, in use, being swollen to cover the ports in the cavity wall. Active ingredient is released from the container only through the hydrogel covering the ports. In this way sustained and controlled release of the active substance from the device is obtained.

473662

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