A medical system includes an apparatus for generating at least one activation signal, and a medical device, wherein the medical device further includes an apparatus which receives the at least one activation signal and is arranged and configured to activate and/or deactivate the medical device when the apparatus for receiving the at least one activation signal detects a repetition of a predefined activation signal and/or activation signal sequence and/or the repetition thereof and/or a predefined activation signal duration within a predefined time period.