Delivery system

Details Delivery system Delivery system

A - Human Necessities

61

M

128/104, 167/153

A61M 5/00 (2006.01) A61K 9/00 (2006.01)

Patent

CA 1113395

Abstract of the Disclosure Delivery systems and devices for the controlled release of chemicals, including drugs, comprising a wall, formed in part at least, of a porous material, including a porous fabric material, pores of which contain a hydrogel, said porous wall in contact with at least a portion of a reservoir comprised of a chemical and, if desired, a water-soluble liquid excipient and/or a detergent; process for preparation thereof, and use for the controlled release of chemicals, including drugs, to an aqueous liquid-containing environment. Emphasis is given to said systems and devices in which the hydrogel is gelled cellulose triacetate, and to their use for controlled release of drugs to animal, especially to ruminants over prolonged periods of time.

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