Patent ID: 6066261
Filing Date: 2000-05-23
Classification: A61M

Abstract:
A method for monitoring a part of a blood treatment machine, the blood treatment machine having a dialyzer subdivided by a semipermeable membrane into a first chamber having a first chamber inlet and a first chamber outlet and a second chamber having a second chamber inlet and a second chamber outlet; a blood inlet line connected to the first chamber inlet and to a blood pump; a blood outlet line connected to the first chamber outlet; a dialysis fluid inlet line leading from a dialysis fluid source to the second chamber inlet; and a dialysis fluid outlet line leading from the second chamber outlet to a discharge point, the method comprising:separating the dialysis fluid inlet line at a first separation point, the dialysis fluid inlet line having a dialysis fluid inlet section between the dialyzer and the first separation point;separating the dialysis fluid outlet line at a second separation point, the dialysis fluid outlet line having a dialysis fluid outlet section between the dialyzer and the second separation point;separating the blood outlet line at a third separation point, the blood outlet line having a blood outlet line section between the dialyzer and the third separation point;separating the blood inlet line at a fourth separation point, the blood inlet line having a blood inlet line section between the dialyzer and the fourth separation point;building up an excess pressure in a closed system, the closed system including the dialyzer, the dialysis fluid inlet section, the dialysis fluid outlet section, the blood outlet line section and the blood inlet line section; andmonitoring the excess pressure to detect a pressure drop in the closed system.