METHOD AND DEVICE FOR ADMINISTERING MEDICATION AND/OR PLACEBO

摘要

The drug delivery system (80) accepts separate drug or placebo vials (22) as the source of drug or placebo, which is administered through the drug channel (12) or placebo channel (14), respectively. Pump cassettes (20) are of conventional design and a received within a receptacle of the housing (82). The pump cassettes (20) typically comprise a plastic housing with passages, valves and chambers through which liquid flows as a piston displaces an elastomeric membrane accessed through a pumping port formed in the cassette housing.