This invention relates to a portable medical device (100) for communication of medical data information comprising a medical device part (101) comprising a first processor (104) and first storage means (103), and means (106) for executing one or more medical related functions, a communication device part (102) comprising a second processor (104'), second storage means (103'), and communication means (105), where the medical device part (101) and the communication device part (102) is connected allowing for exchange of data information according to a predetermined protocol, where the exchange of communication is under the control (109) of the medical device part (101) and where the functionalities of each device part otherwise is separated.