The system has a medical work station (5) detecting physiological data of a patient (4), and comprising a respiration device (43) with a connector (49) such as universal serial bus connector, for a respiration tube (53). The station has a radio frequency detecting device (45) that detects a radio frequency marker, with marking information, within an area of the connector. The marker is connected with the respiration tube, and a marking signal representing the marking information is generated. The system allocates physiological data and patient data to one another based on the marking signal. Independent claims are also included for the following: (1) a respiration tube for connecting with a respiration device (2) a method for allocating patient data to physiological data.
