Medical appliance for extracorporeal blood treatment

A medical appliance for extracorporeal blood treatment comprising:

• a housing component;
• a cover comprising a top side;
• a pivot bearing arrangement by which the cover is mounted on the housing component so as to be pivotable about a pivot axis relative to the housing component;
• and
• a spring arrangement,
• the cover being pivotable at least between a covering position, in which the cover covers the housing component, and a release position, in which the cover releases the housing component,
• the pivot bearing arrangement comprising at least a first pivot bearing and a second pivot bearing spaced apart from the first pivot bearing along the pivot axis,
• the first pivot bearing comprising a first bearing element and a first bearing element receptacle,
• the second pivot bearing comprising a second bearing element and a second bearing element receptacle,
• the first bearing element engaging in the first bearing element receptacle,
• the second bearing element engaging in the second bearing element receptacle,
• the first bearing element and the second bearing element being pivotable about the pivot axis and linearly movable to a limited extent along the pivot axis relative to the first bearing element receptacle and the second bearing element receptacle, respectively,
• as a result of which the top side of the cover is configured to be shifted in a linearly movable manner along the pivot axis relative to the housing component between a removal position, in which at least one of the first bearing element and the second bearing element is disengaged from at least one of the first bearing element receptacle and the second bearing element receptacle, respectively, and a bearing position, in which the first bearing element and the second bearing element are engaged with the first bearing element receptacle and the second bearing element receptacle, respectively,
• the first bearing element, the first bearing element receptacle, the second bearing element, and the second bearing element receptacle each having a longitudinal axis that is coaxial with the pivot axis, the longitudinal axes of the first bearing element, the first bearing element receptacle, the second bearing element, and the second bearing element receptacle remaining coaxial with one another and with the pivot axis as the top side of the cover is shifted between the removal position and the bearing position,
• the cover being mounted resiliently to the housing component along the pivot axis by the spring arrangement and elastically pretensioned relative to the housing component in a direction of the bearing position by the spring arrangement.