Patent ID: 11944732
Assignee: GAMBRO LUNDIA AB
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 18:
19. An extracorporeal therapy machine comprising:
a dialysis fluid circuit including a dialysis fluid preparation structure with a pump, the dialysis fluid preparation structure being configured to prepare a dialysis fluid for an extracorporeal therapy treatment, the dialysis fluid circuit including a fresh dialysis fluid pump, a used dialysis fluid pump, and at least one filter for purifying the dialysis fluid;
valves located upstream and downstream from the at least one purifying filter;
a source of a disinfecting fluid;
a blood circuit including a blood filter for use during the extracorporeal therapy treatment a blood pump for pumping blood through the blood filter during the extracorporeal therapy treatment; and
a control unit operable with the dialysis fluid circuit and the dialysis fluid preparation structure, the control unit programmed to:
cause at least one of the pump, the fresh dialysis fluid pump, or the used dialysis fluid pump to pump the disinfecting fluid from the source of disinfecting fluid to an area of the dialysis fluid circuit having the at least one purifying filter,
stop the at least one of the pump, the fresh dialysis fluid pump, or the used dialysis fluid pump to cause the disinfecting fluid to remain for a duration of time at the area of the dialysis fluid circuit having the at least one purifying filter, the delivered disinfecting fluid being a dose of disinfecting fluid sufficient to fill the at least one purifying filter, the area being located between the valves, and
close the valves located upstream and downstream from the at least one purifying filter to trap the dose of disinfecting fluid in position to disinfect the at least one purifying filter,
wherein during the duration of time the disinfecting fluid is precluded from contacting at least one of the fresh dialysis fluid pump or the used dialysis fluid pump for which it is desired to be free of the disinfecting fluid.