Controlled release delivery system

Details Controlled release delivery system Controlled release delivery system

1979-02-22

1980-09-02

Rosenbaum, C. Fred

Surgery

Respiratory method or device

Ozone or ion generation

A61M 700

Patent

active

042201535

ABSTRACT:
Delivery systems and devices for the controlled release of chemicals, including drugs, comprising a wall, formed in part at least, of 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 porous fabric material is a synthetic fabric and gelled cellulose triacetate is the hydrogel, and to their use for controlled release of drugs to animals, especially to ruminants, over prolonged periods of time.

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patent: 4044119 (1977-08-01), Carlson, Jr. et al.
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patent: 4105779 (1978-08-01), Kobayashi et al.
The Merck Index, 9th Ed., 1976, p. 812.
Irish Vet. J., Nov. 1974, Downey et al., 221.
Brit. Vet. J., 134, 166 (1978), Jones et al.

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