| 摘要 |
<p>The invention relates to a device and a method for monitoring an electrically operated pump arranged in a liquid system, in particular a dialysis liquid system, of an extracorporeal blood treatment device arranged, in particular an electric pump for delivering dialysis liquid. The device (30) according to the invention for monitoring is characterized by an evaluation unit (30b) comprising means for continuously determining the predefined threshold value, to which the pump flow or a quantity correlating with the pump flow are compared. In order to detect a periodically occurring increase of the pump flow or the quantity correlating with the pump flow, the pump flow or the quantity correlating with the pump flow is compared to the continuously calculated threshold value. Since the predefined threshold value is continuously adjusted, the aging of the pump or the delivery rate thereof has no influence on generating the control signal. A readjustment or calibration of the pump is therefore not necessary. Thus, the control signal is generated with a high amount of certainty and great reliability.</p> |
