THE INVENTION RELATES TO AN INJECTOR COMPRISING A PROCESSOR, A PUMP OR A MOTOR DRIVING A PISTON SUITABLE FOR FORCING LIQUID OUT OF A CARTRIDGE, A DATA STORE, A DEVICE FOR TRANSFERRING DATA, WHEREIN THE PROCESSOR IS ELECTRONICALLY CONNECTED TO THE DATA STORE, TO A CONTROL UNIT FOR THE PUMP OR THE MOTOR, AND TO THE DEVICE FOR TRANSFERRING DATA WHEREIN THE INJECTOR IS SUITABLE FOR BEING CONNECTED TO A TANK OR CARTRIDGE COMPRISING A PLURALITY OF DOSES OF A PARENTERAL SOLUTION FOR TRANSFERRING FLUID WHEREIN A DATA STORE IS FIXEDLY CONNECTED TO THE TANK OR CARTRIDGE WHEREIN THE DEVICE FOR TRANSFERRING DATA IS SUITABLE FOR READING OUT INFORMATION FROM THE DATA STORE ON THE TANK OR THE CARTRIDGE AND WHEREIN AT LEAST ONE DESIGNATION OF THE IDENTITY OF THE PRODUCT STORED IN THE TANK OR THE CARTRIDGE IS STORED IN THE DATA STORE ON THE TANK OR THE CARTRIDGE. THE INVENTION FURTHER RELATES TO A TANK OR A CARTRIDGE COMPRISING A PLURALITY OF DOSES OF A PARENTERAL SOLUTION, WHEREIN A DATA STORE IS FIXEDLY CONNECTED TO THE TANK OR THE CARTRIDGE.
