Intravenous system for delivering a beneficial agent

Claim 1

A self-contained, self-powered beneficial, drug delivery system for use with an intravenous delivery system, the beneficial drug delivery system, comprising in combination: (a) an intravenous formulation chamber comprising: a wall provided with an inlet that lets an intravenously acceptable medical fluid into the intravenous formulation chamber, and with an outlet for letting fluid leave the chamber; and, (b) a drug delivery device in the intravenous formulation chamber, the device comprising an inner mass transfer conductor; a beneficial intravenously administrable drug in an amount for performing a therapeutic program with said intravenously administrable drug in the conductor that is permeable to the passage of the drug; and, a membrane surrounding the conductor, which membrane release the drug in a therapeutically effective amount from the device into the medical fluid that is a pharmaceutically acceptable carrier for the drug and enters the intravenous, formulation chamber for formulating an intravenously administrable fluid drug formulation in situ that produces a beneficial effect, when administered intravenously to a recipient, over time.