METHOD AND ARRANGEMENT FOR INTEGRITY-TESTING OF A TUBE-SET FOR USE IN A CYCLER FOR PERITONEAL DIALYSIS

摘要

Method and arrangement for integrally testing a tube-set intended for use in a cycler for peritoneal dialysis. The cycler comprises a closed casing which houses a portion of the tube-set and which can be subjected to an underpressure or an overpressure for performance of peritoneal dialysis. A plurality of arrangements are provided for influencing tubes which enter the casing in the tube-set. The casing is subjected to a first overpressure of about 40 mm Hg with said clamp arrangements closed and a first "normal" pressure leakage is observed for 10 seconds with a pressure sensor in the form of a pressure drop DELTA P1. Thereafter, the casing is subjected to the same overpressure of about 40 mm Hg with said clamp arrangements open and a second pressure leakage is observed for 10 seconds with a pressure sensor in the form of a pressure reduction DELTA P2. If the second pressure leakage is greater than the first normal pressure leakage, it is an indication that the tube-set has not passed the integrity-test and the machine instigates suitable action such as emitting an alarm signal and preventing the tube-set from being used for peritoneal dialysis.