Apparatus for expelling fluids, and suitable for this system comprising the device for expelling fluid cartridge and cartridge.

Device for ejecting a pre-metered amount of a medical substance in dissolved or suspended form as fluidic or aerosol jet into very fine droplets, providing pre-metered amount under pressure by a metering device (29) comprising -a elastic element ( 15, 16) for storing a predetermined amount of energy - a movable element (6), which you can eject the predetermined amount and is capable of exposing the liquid amount to increased predetermined pressure, - an element (4, 12 , 13, 14, 18, 19, 21, 22, 23, 27) for inserting and removing a container cartridge (10) containing the medicament, or from a receiving chamber (30) arranged inside the device, - a element for the introduction of the medical substance in a dispensing device pressurized (29) firmly attached to a container cartridge (10), - a container cartridge (10) which can be inserted through an opening (4) in a a housing wall (26) of the device in the receiving chamber (30) being positionable container cartridge (10) directly into its terminal position in the device, characterized in that - the container cartridge (10) after introduction into the opening the housing (4) is transferable into its final position by a means of transport, especially transport sled (14).