A medical device comprising at least a medical machine (2) for treating fluid, adjustable in a plurality of different operational configurations, comprising: - means (3) for treating a fluid including a predetermined number of sensors for detecting parameters operation of the medical machine (2) and a predetermined number of actuators to intervene to modify operating parameters of the medical machine (2) - a control unit (4) at least to send control signals and to receive information from the means (3) for treating a fluid, sending the control unit (4) control signals to the actuators and / or receiving data sensors to establish and / or calculate the operational configuration of the machine (2) - a device (5) for inputting data to be supplied to the control unit (4) to allow a user to generate the control signals for the means (three) treating fluid - a display device (6) for viewing at least a portion of the information received from the control unit (4) associated with means (3) for treating a fluid - means of remote access and control (10) to allow a remote unit (7) taking over a predetermined number of functions of the medical machine (2) for treating a fluid, the means of remote access and control (10) configured to receive in input the at least one identification data (ID) from a remote unit (7), the control unit (4) of the medical machine set being to allow and / or selectively inhibit means access and remote control (10) take control of at least part of the predetermined number of functions of the medical machine (2) according to the received identification data wherein the control unit (4) of the medical machine is further configured to selectively inhibit the means of remote access and control (10) to assume and / or maintain control of at least part of the predetermined number of functions the medical machine (2) according to the operating configuration of the machine.Un aparato médico que comprende al menos una máquina médica (2) para el tratamiento de