Haemonetics Cell Saver Elite+, Руководство пользователя

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Safety and Patient Care Precautions 67
Haemonetics
®
Cell Saver
®
Elite
®
+ User Manual P/N 130859-US, Manual Revision: AA
Avoiding Red
Blood Cell
Spillage
Under normal conditions the effluent line sensor ensures that there is little or
no RBC spillage. However, there are four conditions that may result in RBCs
spilling over into the waste bag:
1.) Overfilling of the bowl in Manual Mode.
Note: In the event of a bowl overfill, the device tries to reduce the amount of
RBC spillage, which may result in an extended Wash phase and longer
procedure time.
To avoid overfilling the bowl in Manual Mode:
1. Carefully watch the RBC layer as the bowl fills.
2. Touch Wash to manually start Wash when the RBC layer is close 1 to the
bowl optics beam.
Note: The hematocrit of the product may be reduced if the Wash phase is
started before the bowl is full.
Attention: A Wash flow rate that is too low provides a poor wash of the cells
due to insufficient agitation and mixing of saline solution with the RBC layer.
2.) Excessive flow rate of saline solution due to processing parameters set by
the user.
Note: Haemonetics recommends the Wash speed be at least 25 mL/min lower
than the Fill speed for the 125 mL and 225 mL bowls. This ensures the cells
are packed more forcefully during Wash and therefore less likely to spill.
3.) Pump regulation is disabled.
4.) The pump has paused, the RBC layer is close 1 to the bowl optics beam, and
the user restarts the Fill phase or enters the Concentrate phase.
If the pump has paused and the RBC layer is close 1 to the bowl optics beam
and the user restarts the Fill phase or enters the Concentrate phase, the RBCs
may start to spill into the waste bag and the device will not transition into the
Wash phase when expected.
When entering the Concentrate phase the centrifuge speed slows down,
causing the RBC layer to expand. If the RBC layer is close
1
to the bowl optics
beam, this expansion may push the RBC layer past the bowl optics beam.
When entering the Concentrate phase, and when restarting the Fill phase,
there is a blind
2
volume when the bowl optics and line sensor are not active. If
the RBC layer passes the bowl optics trip point during this blind volume, the
device does not enter the Wash phase until the line sensor detects RBCs. By
the time the line sensor detects RBCs, the bowl is fully packed, and some
1.
Within:
• 6 mm (125 mL or 225 mL bowl)
• 3 mm (70 mL bowl)