A system for supplying a process medium to medical articles having multiple channels, the system comprising: - a medical processing device configured to receive medical articles to be subjected to a process medium, the medical processing device comprising a plurality of nozzles , each nozzle being movable between a retracted position and an advanced position, - a removable coupling device comprising a plurality of fluid passages , each fluid passage being configured to be connectable to a respective channel of a medical article having multiple channels before the removable coupling device is inserted into the medical processing device , wherein the removable coupling device is configured to be positioned at a docking location inside the medical processing device so that movement of the nozzles from said retracted position to said advanced position causes at least some of said nozzles , in particular all of said nozzles , to become engaged with respective fluid passages of the removable coupling device , thereby enabling the medical processing device to supply the process medium from the nozzles , via the engaged fluid passages of the removable coupling device , into any channel of the medical article connected to the removable coupling device , characterized in that the medical processing device comprises a docking unit , the docking unit comprising a plurality of compartments , one for each nozzle , wherein - in said retracted position, each nozzle is located at least partially inside its respective compartment , in particular fully inside its respective compartment , and - in said advanced position, each nozzle projects out from its respective compartment . - a medical processing device configured to receive medical articles to be subjected to a process medium, the medical processing device comprising a plurality of nozzles , each nozzle being movable between a retracted position and an advanced position, - a removable coupling device comprising a plurality of fluid passages , each fluid passage being configured to be connectable to a respective channel of a medical article having multiple channels before the removable coupling device is inserted into the medical processing device , wherein the removable coupling device is configured to be positioned at a docking location inside the medical processing device so that movement of the nozzles from said retracted position to said advanced position causes at least some of said nozzles , in particular all of said nozzles , to become engaged with respective fluid passages of the removable coupling device , thereby enabling the medical processing device to supply the process medium from the nozzles , via the engaged fluid passages of the removable coupling device , into any channel of the medical article connected to the removable coupling device , characterized in that the medical processing device comprises a docking unit , the docking unit comprising a plurality of compartments , one for each nozzle , wherein - in said retracted position, each nozzle is located at least partially inside its respective compartment , in particular fully inside its respective compartment , and - in said advanced position, each nozzle projects out from its respective compartment . - in said retracted position, each nozzle is located at least partially inside its respective compartment , in particular fully inside its respective compartment , and - in said advanced position, each nozzle projects out from its respective compartment . <EOS>