The method of air for returning blood:
1. Pull out the venous line of venous monitoring terminal, clamp the arterial connecting terminal of hemoperfusion cartridge with hemostatic clamp, screw down the arterial terminal from the hemoperfusion cartridge, and hang on the machine rack together with hemostatic clamp.
2. Hold the hemoperfusion cartridge high, and then let the blood down automatically by gravity. When the blood flows out from it completely and the color becomes white, no blood is left over, then closes the clamp of extension tube of hemoperfusion cartridge in venous terminal which avoid the air entering the dialyzer.
3. Meanwhile clamp the venous dialyzer terminal with another hemostatic clamp, screw down extension tube of hemoperfusion cartridge from the dialyzer. The arterial line which is hung on the machine rack is connected to the dialyzer immediately and loosen hemostatic clamp of the venous terminal of the dialyzer 。
4. Turn on the pump and the speed is adjusted to normal dialysis status.
Advantages: the blood will not through the arterial tube and isn’t left over in the arterial line wall; reduce the patients’ blood loss; patients don’t need increase the amount of dehydration, operation is simple and can be completed independently by single person.