Device for preparing a medicinal substance solution, suspension or emulsion

Device for the preparation of at least one of a solution, a suspension and an emulsion from an active medicinal substance comprising:

• a first component being in at least one of a powder form, a lyophilisate, a liquid, and a paste;
• a second component being at least one of a dilutant and a liquid solvent;
• a first container (11) for storing said first component, said first container being closed at a first end (17);
• a second container (13) for storing said second component;
• a first stopper piston dish (19) at a second end of said first container (11), said first stopper piston dish (19) being axially movable within said first container (11);
• a second stopper piston dish (24) at a first end of said second container (13), said second stopper piston dish (24) being axially movable within said second container (13);
• a conveyance shaft (15) connecting said first and second stopper piston dishes (19, 24), said conveyance shaft (15) ensuring a rigid, tight, and sterile connection between said stopper piston dishes (19, 24) when said device is in a charging position, and defining a tight and sterile channel of communication between said containers (11, 13) when said device is in a use position, said use position being a position wherein said first stopper piston dish (19) of said first container (11) is at a higher level than said second stopper piston dish (24) of said second container (13);
• at least one end of said conveyance shaft (15) being shaped in a plane substantially perpendicular to a longitudinal axis of said conveyance shaft;
• a first slit (33) in a central zone of said first stopper piston dish (19), said first slit (33) being strongly compressed and tightly closed when said device is in said charging position, said first slit (33) being opened when a first end of said conveyance shaft (15) is introduced into said first slit (33) when said device is in said use position;
• and
• a second slit (31) in a central zone of said second stopper piston dish (24), said second slit (31) being strongly compressed and tightly closed when said device is in said charging position, said second slit (31) being opened when a second end of said conveyance shaft (15) is introduced into said second slit (31) when said device is in said use position.