Method for automated priming of an extracorporeal blood conduit system, and a device for same

A method of priming an extracorporeal blood system, the extracorporeal blood system comprising an arterial blood line, a venous blood line, a pump segment for interaction with a blood pump of the apparatus, and a blood treatment unit, the method comprising the steps of:

• connecting a port of the venous blood line to a venous blood port of the blood treatment unit;
• connecting a port of the arterial blood line to an arterial blood port of the blood treatment unit;
• connecting the extracorporeal blood system to a reservoir containing priming liquid;
• and
• filling the extracorporeal blood system with priming liquid,
• the pump segment being inserted into or positioned relative to the blood pump prior to filling with priming liquid so that during filling of priming liquid into the extracorporeal blood system, the pump segment is not occluded by the blood pump and, after complete filling of the extracorporeal blood system with priming liquid, the pump segment is automatically placed and occluded in the delivery path of the blood pump by activating the blood pump.