Parenteral controlled therapy

Claim 1

an intravenous delivery system for administering an intravenously administrable beneficial agent formulation to an animal, the delivery system comprising: (a) a primary tube comprising means adapted for communicating with a reservoir of an intravenously acceptable fluid for the flow of an intravenously acceptable fluid therethrough; (b) a secondary tube comprising means adapted for communicating with a reservoir of an intravenously acceptable fluid for the flow of an intravenously acceptable fluid therethrough; (c) a formulation chamber in communication with the secondary tube, the formulation chamber comprising: (1) means for introducing intravenously acceptable fluid from the secondary tube into the formulation chamber; (2) means for supplying a beneficial agent to the intravenously acceptable fluid that enters the formulation chamber, said means comprising a pharmaceutically acceptable solid dosage form of the beneficial agent that release the beneficial agent for mixing with the intravenously acceptable fluid to provide an intravenously acceptable beneficial agent fluid formulation formed at a rate controlled by the rate of fluid flow into the formulation chamber and by the rate of release of agent from the dosage form; 3means for letting the intravenously acceptable beneficial agent fluid formulation leave the formulation chamber; and, (d) means for receiving fluid from the primary tube and for receiving beneficial agent formulation from the formulation chamber for administering, when the delivery system is in operation, to an animal.