| abstract |
A drug delivery device for the continuous and controlled administration of a predetermined therapeutically effective dosage of drug to a mamallian patient over a prolonged period of time. The device meters the flow of drug by means of a drug release rate controlling material comprised of an anionic polyvalent metal cation cross-linked polyelectrolyte. The device bioerodes in the biological environment of the patient concurrently with the dispensing or at a point in time after the dispensing of the therapeutically desired amount of drug. |