A device for reconstituting a pharmaceutical composition from at least a first component in a first container and a second component in a second container. The device includes a fluidic unit having a first connector coupled to the first container, a second connector coupled to the second container, a pump, and a fluidic circuit connecting the first connector, the second connector and the pump. The first connector includes a crankpin in rotating engagement within a body and including an axial port fluidically couplable to the first container, a radial port fluidically connected to the axial port of the first connector, and at least one channel arranged therein so as to cooperate with the radial ports of the body of the first connector to selectively connect the axial port of the first connector with at least one channel portion of the fluidic circuit depending on the angular position of the crankpin.