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US 4,902,513 AGranted
Oral sustained release medicament
OwnerJean Carvaisinventor
Life of this patent
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OwnerJean Carvaisinventor
Estimating the term…
In a first aspect of the invention there is provided a dosage form for delivery of a fixed amount of a drug to provide a sustained release of said drug to a patient which comprises: (a) a graduated container for accepting a liquid oral sustained release medicament, said graduated container being calibrated in units to permit an accurate total dosage of said drug; and (b) a liquid oral sustained release medicament capable of providing even blood levels of a drug in the bloodstream of a patient over a prolonged period of time, which comprises a suspension comprising microcapsules of said drug suspended in a saturated solution of said drug, the saturated level of said drug being maintained over a prolonged period of time for sustained release to the bloodstream and at a substantially constant level by means of the dissolution of the microcapsules into solution to replace the drug that leaves said solution, thereby maintaining the saturated level of drug in solution.
A liquid oral sustained release medicament capable of providing even blood levels of theophylline in the bloodstream of a patient over a prolonged period of time, which comprises a suspension comprising microcapsule of said theophylline suspended in a saturated solution of said theophylline, the sustained level of said theophylline being maintained over a prolonged period of time for sustained release to the bloodstream and at a substantially constant level by means of the dissolution of the microcapsule into solution to replace the theophylline that leaves said solution, wherein said liquid oral sustained release medicament is soluble in water and said suspension is an aqueous suspension.
A liquid oral sustained release medicament capable of providing even blood levels of theophylline in the bloodstream of a patient over a prolonged period of time, which comprises a suspension comprising microcapsules of said theophylline suspended in a saturated solution of said theophtlline the saturated level of said theophylline being maintained over a prolonged period of time for sustained release to the bloodstream and at a substantially constant level by means of the dissolution of the microcapsules into solution to replace the theophylline thatbleaves said solution, thereby maintaining the saturated level of theophylline in solution, wherein said liquid oral sustained release medicament in insoluble or slightly soluble in water and said suspension includes a non-aqueous solvent.
Dependencies are inferred from the claim text.