A device for a device for überwchung, access to a patient and method for monitoring a patient access, in particular a vascular access in the case of the extracorporeal blood treatment

摘要

The invention relates to a device for a device for monitoring a patient access, in particular a vascular access in the case of the extracorporeal blood treatment, with which a connection between the arterial and venous tubes (6, 7) or of the arterial or venous hollow puncturing needle (5, 8; 37, 38) can be produced, wherein the needles (37, 38) are oriented substantially parallel to each other. During the slipping out of the venous cannula (38) is out of the vessel access to the arterial cannula (37) is pulled out. This malfunction is reliably detected with the known protections for the monitoring of the correct seating of the arterial cannula the pressure in the arterial hose line (6) and / or an air inlet monitoring. In addition, the invention relates to an extracorporeal blood treatment device and a method for monitoring a patient access, wherein the venous and arterial tubes or the puncture needles are connected to each other.