Medical device

A medical device comprising:

• a plurality of leg portions that lift up a main body of the medical device from a floor surface and support the main body, the plurality of leg portions comprising an extension and contraction unit comprising a rod movable in a vertical direction and a caster configured to move the main body on the floor surface;
• and
• a load detection unit which is configured to detect a load received in the vertical direction by the plurality of leg portions from the floor surface, and which is provided between the main body and the extension and contraction unit disposed underneath the load detection unit,
• wherein the extension and contraction unit is configured to bring the caster into contact with the floor surface by contracting the rod, or lift up the caster and the main body from the floor surface by extending the rod so that the rod contacts the floor surface,
• wherein, when the caster is in contact with the floor surface, the extension and contraction unit is in a retracted state and the rod is not in contact with the floor surface,
• wherein, in the retracted state, the extension and contraction unit is separated from the load detection unit by a gap in the vertical direction, and
• wherein, in an extended state when the rod is extended, a contact between the load detection unit and the extension and contraction unit is established, and the gap between the extension and contraction unit and the load detection unit is eliminated.