Method for monitoring a blood vessel access during a dialysis treatment and apparatus for dialysis treatment with a device for monitoring a blood vessel access

摘要

To monitor vascular access during a dialysis treatment, pressure pulses are generated in the dialysis fluid path, which are monitored in the extracorporeal blood circulation. For incorrect vascular access, i. H. the needle slipping out is closed when there is a characteristic change in the pressure pulses in the extracorporeal circuit. In the extracorporeal blood circuit, the pressure pulses are preferably monitored, which are generated by a balancing device (13) connected into the dialysis fluid supply line and the discharge line. The pressure pulses are detected in the venous blood line (7) with a pressure sensor (26) and evaluated in an evaluation unit (25). When the venous needle slips out, an alarm generator (28) generates an acoustic and / or visual alarm and the blood flow in the extracorporeal circuit is interrupted. IMAGE