Surgical microscope stand

A surgical microscope stand (100) comprising:

• a first carriage (16) that is arranged on a first carrier arm (14) and is drivable by a first drive unit;
• and
• a second carriage (18) that is arranged on a second carrier arm (22) and is drivable by a second drive unit;
• wherein the surgical microscope stand (100) further comprises an operating region within which an operating unit for manual application of control to the first and second drive units is provided, wherein the operating region is located on the first carrier arm;
• and
• wherein the operating unit is configured to enable an operator to individually select a respective displacement direction (P1, P2) for each of the first and second drive units and to individually apply control to each of the first and second drive units to independently displace the first carriage (16) and the second carriage (18) in the respective displacement direction;
• and
• wherein a location sensor (36) is provided on at least one of the carriages (16, 18) for ascertaining a location in space of the at least one carriage;
• and
• wherein a predetermined permissible displacement range relative to a zero position is stored for the at least one carriage (16, 18) in a control unit of the stand (100), and a movement of the at least one carriage (16, 18) by actuation of the operating unit is possible only within the predetermined permissible displacement range;
• and
• wherein the control unit compares the location in space ascertained by the location sensor (36) with the predetermined permissible displacement range and, depending on a result of that comparison, authorizes a displacement of the at least one carriage (16, 18).