A system comprising: a first medical device component (12) having a first end (110), a second end (112) and a lateral wall (114) extending therebetween, in which the wall (114) ) side has an outer surface (116) and an inner surface (118), in which the inner surface (118) of the side wall (114) has a first protruding element (121)； and a second component (14, 18, 18B, 400) of medical device having a first connecting channel (136, 136A), a first disconnecting channel (138, 138A) and a first fixing element (140, 140A) disposed between the first connecting channel (136, 136A) and the first disconnecting channel (138, 138A), in which, with the first element (121) protruding from the first component (12) of medical device received within the first channel (136, 136A) of connection of the second component (14, 18, 18B, 400) of medical device, the first connection channel (136, 136A) guides the first projecting element (121) to the first element (140, 140A) of fixation, in which, with the first protrusion element (121) coupled with the first fixation element (140, 140A), the first medical device component (12) is secured to the second component (14, 18, 18B, 400) of medical device； and characterized in that the first connection channel (136, 136A) is different from the first disconnection channel (138, 138A), and that, with the first element (121) protruding from the first component (12) of the medical device received within of the first disconnecting channel (138, 138A) of the second component (14, 18, 18B, 400) of medical device, the first disconnecting channel (138, 138A) guides the first outgoing element (121) from the first channel (138 , 138A) of disconnection, thus decoupling the first component (12) of the medical device from the second component (14, 18, 18B, 400) of the medical device.Un sistema que comprende: un primer componente (12) de dispositivo médico que tiene un primer extremo (110), un segundo extremo (112) y una pared (114) lateral que se extiende entre
