Patent ID: 7985196

Claim:
A method for at least partial emptying of an extracorporeal blood circulation after blood of a patient in the extracorporeal blood circulation has been returned to the patient via an infusion liquid which displaces the blood, and the patient has been separated from the extracorporeal blood circulation, the extracorporeal blood circulation having a hemodialyzer divided by a semipermeable membrane into a blood chamber and a dialysis fluid chamber, with an arterial blood line leading from an arterial connection point to the blood chamber and a venous blood line leading from the blood chamber to a venous connection point, the method comprising: without additionally connecting the arterial and venous blood lines together, a step of actively or passively aerating the arterial blood line at a first point and the venous blood line at a second point so as to move the infusion liquid in the blood chamber and in a section of the arterial blood line between the blood chamber and the first point and in a section of the venous blood line between the blood chamber and the second point through the semipermeable membrane and into the dialysis fluid chamber for emptying through a dialysis fluid discharge line that exits therefrom.