Circuit replacement
・Always prepare the spare circuit for emergency
replacement.
・Exchange all of the circuit when a problem occurs
in the oxygenator or the centrifugal pump.
・All procedures must be aseptically performed.
1.
Perform priming procedure with the spare applicable centrifugal
pump controller or the backup controller. Then clamp the arterial
line (red) and the venous line (blue).
2.
Disconnect the lines from the cannulas while taking care not to
spill the blood.
Method in detail: Clamp the clamping tube of the cannulas and
close the clamps on the lines. Loosen the screw rings of the
arterial line and the venous line and then disconnect the lines.
3.
Connect the cannulas with a newly primed EBS circuit.
4.
Open the clamp on the venous line (blue) and the forceps on
the venous cannula (blue).
5.
Start the rotation of the centrifugal pump and set the pump
speed at around 1000rpm.
6.
Gradually release the forceps and the clamp on the arterial
cannula (red) and the arterial line (red) to start circulation.
After-load pressure higher than the pump's outlet
pressure causes back flow. To prevent this, do not
unclamp the outlet of the pump at the start of
circulation, until an adequate outlet pressure has
been reached.
CAUTION
CAUTIONS
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