Patent ID: 8518258

Claim:
A hemodialysis machine having a dialysis fluid circulation which has a source and a drain for dialysis fluid, a dialysis fluid inlet line leading from the source for dialysis fluid to a first connecting element, a dialysis fluid outlet line leading from a second connecting element to the drain for dialysis fluid, a pumping mechanism for circulating dialysis fluid in the dialysis fluid circulation and first closing element in the dialysis fluid inlet line and second closing element in the dialysis fluid outlet line and also a control unit for controlling the pumping mechanism and the first and second closing elements, whereby the first and second connecting elements are designed so that they are connected to the dialysis fluid chamber of a hemodialyzer that is divided by a semipermeable membrane into a dialysis fluid chamber and a blood chamber when performing a hemodialysis treatment, so that dialysis fluid flows from the source through the dialysis fluid inlet line to the dialysis fluid chamber and from the dialysis fluid chamber to the drain via the dialysis fluid outlet line, characterized in that the control unit is designed so that it controls the first and second closing elements and the pumping mechanism as part of a sampling control program that runs automatically, so that a predetermined amount of dialysis fluid is conveyed into a sampling set that is connected to the first or second connecting element, and further characterized in that the first and second connecting elements are couplings fitted for dialysis fluid connections according to DIN EN 1283.