| 摘要 |
PROBLEM TO BE SOLVED: To make available a method by which it is possible in principle to detect leakages in the fluid system of a blood treatment apparatus without interrupting the blood treatment, and also to make available a device which permits detection of leakages without interrupting the dialysis treatment. SOLUTION: In order to detect the leakage in the fluid system of the blood treatment apparatus having an extracorporeal blood circuit, the pressure in the fluid system is measured continuously during a predetermined period of the duration of treatment, and the leak rates are calculated from the change in the pressure at predetermined time intervals of the predetermined period of the duration of dialysis treatment. The leakage volume in the predetermined period of the duration of dialysis treatment is calculated from the leak rates, and the leakage volume is compared with a predetermined limit value. If the leakage volume is greater than the limit value, this indicates a possible loss of leaktightness in the system. This can be verified with a conventional pressure-holding test. The method and device are characterized by the fact that it is not necessary in principle to interrupt the blood treatment in order to detect a loss of leaktightness. COPYRIGHT: (C)2010,JPO&INPIT
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