Blinding kit for clinical trials

A blinding kit for administering a substance to a patient in a clinical trial, the blinding kit comprising:

• a first blinding device and a second blinding device, wherein each of the first and second blinding devices comprises:
• an opaque housing to entirely enclose at least two delivery devices wherein an inert substance is provided in a first delivery device of the at least two delivery devices, and wherein a pharmaceutically active substance is provided in a second delivery device of the at least two delivery devices,
• an outlet being in fluid communication with at least one of the first and the second delivery devices for administering the substance to the patient, wherein the substance is either the inert substance or the pharmaceutically active substance, and
• at least one actuating member of piston type extending outside and through the housing, wherein the at least one actuating member is mechanically engageable with one of the at least two delivery devices such that the at least one actuating member is actuatable from outside the housing,
• wherein
• a) the first blinding device is adapted to impede dispensing of the pharmaceutically active substance from the second delivery device to the outlet in response to an actuation of the at least one actuating member of the first blinding device or
• b) wherein the at least one actuating member of the first blinding device is coupled to the first delivery device and is decoupled from the second delivery device of the first blinding device, and wherein the at least one actuating member of the second blinding device is decoupled from the first delivery device and is coupled to the second delivery device of the second blinding device.