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Details for Patent: 4,892,739

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Summary for Patent: 4,892,739

Title: Osmotic continuous dispensing oral delivery system containing a pharmaceutically acceptable active agent having a improved core membrane adhesion properties
Abstract:An osmotic dispensing delivery system suitable for oral administration, containing a pharmaceutically acceptable active agent for the controlled continuous release of about 50 to about 90 percent by weight of said active agent into the gastrointestinal tract at a rate of about 5 to about 12 percent by weight of said agent per hour consisting essentially of: (a) a shaped solid core containing an osmotically active composition comprising an effective amount of a pharmaceutically acceptable active agent, alone or in combination with a pharmaceutically acceptable binder, an osmotically active driving agent, or tabletting lubricant, or mixtures thereof; (b) said core being substantially evenly coated with a discrete layer of a water-soluble, or water-dispersible, and water permeable substantially non-osmotically active solid polymeric binder, said binder layer being present in an amount between about 0.3 percent and about 10 percent of the weight of the core; (c) a semi-permeable shaped wall member impermeable to said active composition and permeable to gastrointestinal fluid, surrounding and adhesively bonded to the binding layer; and (d) at least one passageway in the wall, for dispensing the active agent, in communication with said core and the external environment.
Inventor(s): Shah; Shailesh B. (Union, NJ), Koparkar; Arun D. (Westfield, NJ)
Assignee: Ciba-Geigy Corporation (Ardsley, NY)
Application Number:07/185,564
Patent Claim Types:
see list of patent claims
Delivery; Composition; Dosage form;

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International Patent Family for Patent: 4,892,739

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Germany58901373► subscribe
Denmark196189► subscribe
Denmark175232► subscribe
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