Laminate device for controlled and prolonged release of substanc

Drug – bio-affecting and body treating compositions – Identification or warning feature – Taste or smell or chemical irritation to the eye – nose – or...

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424 16, 424 19, 424 21, 604890, 604892, A61K 920, A61K 924

Patent

active

046018930

ABSTRACT:
Laminate device for the controlled and prolonged release of at least one active agent to an ambient environment comprising at least one core sheet, said core sheet or sheets comprising said agent or agents in a polymer matrix, and, in a preferred embodiment, a porosity enhancing agent in admixture with said agent; said core sheet or sheets being alternately sandwiched or interposed between coextensive inert polymeric films substantially impermeable to said environment and to said agent or agents, said device being perforated by one or a plurality of macroholes extending through said sheets and said films. In a modification of said device the perimeter edge thereof is coated by an inert polymeric film substantially impermeable to said environment and to said agent or agents. Also included are methods for making such a device.

REFERENCES:
patent: 3113076 (1963-12-01), Jacobs
patent: 3844285 (1974-10-01), Laby
patent: 3924622 (1975-12-01), Brooke
patent: 3926188 (1975-12-01), Baker et al.
patent: 4196187 (1980-04-01), Dannelly et al.
patent: 4217898 (1980-08-01), Theeuwes
patent: 4228149 (1980-10-01), Brewer et al.
patent: 4357312 (1982-11-01), Hsieh et al.
patent: 4381780 (1983-05-01), Holloway
patent: 4483846 (1984-11-01), Koide et al.
Rhine et al., A.I.Ch.E. Symp. Ser. 77, 10-20 (1981).
Rhine et al., "Controlled Release of Bioactive Materials," R. Baker, ed., Academic Press, pp. 177-187 (1980).

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