| 摘要 |
<p>The invention relates to a device and a method for detecting the direction of the flow of liquid through a dialyser 1 having a first chamber 3, with a first and second connector 3A, 3B, and a second chamber 4, with a first and second connector 4A, 4B, wherein the first chamber and the second chamber are separated from each other by a semipermeable membrane 2. The invention additionally relates to an extracorporeal blood treatment device, which has a device for detecting the direction of the flow of liquid through the dialyser. The device according to the invention and the method according to the invention are based on the change of a physical and/or chemical property, for example the substance concentration or the temperature, of a liquid flowing into one chamber of the dialyser and the measurement of the change of the physical and/or chemical property of the liquid flowing out of said one chamber of the dialyser. The change of the physical and/or chemical property of the liquid downstream of one chamber of the dialyser attributable to the change of the physical and/or chemical property upstream of said one chamber of the dialyser is measured before and after the reversal of the direction of flow of the liquid through said one chamber of the dialyser. A second liquid, of which the direction of flow remains unchanged, flows through the other chamber of the dialyser.</p> |
