Patent ID: 7674236
Filing Date: 2010-03-09
Classification: A61M

Abstract:
1. A detecting device for detecting complications during an extracorporeal blood treatment with a blood treatment apparatus, wherein the blood to be treated flows in an extracorporeal blood circuit through the blood chamber of a dialyser, said dialyser being divided by a semipermeable membrane into the blood chamber and a dialysing fluid chamber, and a dialysing fluid flows in a dialysing fluid circuit through the dialysing fluid chamber of the dialyser, the detecting device comprising: a device for changing a physical or chemical characteristic quantity of the blood in the extracorporeal blood circuit; a device for changing a physical or chemical characteristic quantity of the dialysing fluid in the dialysing fluid circuit; at least one first measuring device for measuring a physical or chemical characteristic quantity of the blood; at least one second measuring device for measuring a physical or chemical characteristic quantity of the dialysing fluid; a first monitoring device for monitoring the recirculation of the blood treatment, the first monitoring device configured to cooperate with the device for changing a physical or chemical characteristic quantity of the blood and the at least one first measuring device for measuring a physical or chemical characteristic quantity of the blood when activated in such a way that the recirculation can be monitored on the basis of a change in the measured physical or chemical characteristic quantity of the blood; a second monitoring device configured to monitor the dialysance or clearance of the blood treatment, the second monitoring device configured to cooperate with the device for changing a physical or chemical characteristic quantity of the dialysing fluid and the at least one second measuring device for measuring a physical or chemical characteristic quantity of the dialysing fluid in such a way that the dialysance or clearance can be monitored on the basis of a change in the measured physical or chemical characteristic quantity of the dialysing fluid, wherein the second monitoring device is further configured to monitor the recirculation on the basis of ascertaining the change in the dialysance or clearance, and an evaluation device configured to cooperate with the first monitoring device and the second monitoring device to determine the recirculation in such a way that, during the blood treatment, the second monitoring device is configured to be activated at successive points in time, wherein the first monitoring device is configured to be activated after ascertainment of the change in the recirculation with the second monitoring device, so that the occurrence of a complication can be detected.