Parenteral administration using drug delivery device

Claim 1

An administration set for use with a parenteral therapeutic system, the administration set comprising: (a) a primary tube for the flow of a medical fluid therethrough; (b) a parallel tube in fluid communication with the primary tube for the flow of medical fluid therethrough; and, (c) a drug formulation chamber in the parallel tube, the chamber comprising; (1) a wall surrounding a space; (2) an inlet in the wall that communicates with the parallel tube for receiving fluid into the chamber; (3) a drug delivery device in the chamber, said device comprising a wall formed of a microporous material that substantially surrounds a solid reservoir containing a dosage unit amount of a beneficial drug that forms on its release from the device a drug formulation with fluid that enters the chamber and wherein, when the administration set is in operation and administering drug to a recipient, a beneficially effective amount of the drug is administered by the combined operations of the device releasing drug and the rate of fluid flow through the chamber; and, (4) an outlet in the wall for the flow of fluid containing drug from the chamber.