Abstract: Medical device having a housing with a door that transmits optical signals A medical device (1; 1?) comprises: a housing (10), a signal source (11) arranged at a section (100) of the housing (10), a control device (12) for controlling the emission of an optical signal by the signal source (11) in dependence of an operation of the medical device (1; 1?), and a door (13; 13) movably connected to the housing (10), wherein the section (100) of the housing (10) is covered by the door (13; 13) in a closed state of the door (12), and exposed in an open state of the door (13; 13?), the door (13; 13) comprising an optical device (14) adapted to transmit at least partially the optical signal through the door (13; 13?) when the door (13; 13) is in the closed state, such that the optical signal of the signal source (11) can be seen by an operator both when the door (13; 13?) is in the closed state and when the door (13; 13?) is the open state.

Abstract: A medical device (1) for administering a medical fluid to a patient (4) comprises a housing (10) comprising a housing portion (11), a control device (19) for controlling operation of the medical device (1), a control element (18) placed on said housing portion (11) and being actuatable for entering a control command to be input to the control device (119), wherein the control element (18), for actuation, is at least one of rotatable about an axis of rotation (R) and linearly movable along the axis of rotation (R) with respect to said housing portion (11), and an actuation element (15) operatively connected to the control element (18) for actuating the control element (18). Herein, the actuation element (15) comprises a first knob element (17) operatively connected to the control element (18) and a second knob element (16) supported on said housing portion (11).