sorin 75220, Operator'S Manual, Page: 107 / 304

Processing
X
TRA
Operator’s Manual
20077/021 US
5-25
4. The pump will stop and processing will automatically continue to the Empty phase as soon as one
of these conditions is met:
◊ the programmed wash volume has been reached,
◊ according to the rules for the Better Quality Wash function if active, or
◊ air is detected in the wash line after 90% of the programmed volume has been pumped.
Note: In case the Pfat protocol is in use, the pump will stop and processing will automatically
continue to the Fat Removal phase when the programmed wash volume has been reached.
Empty Phase
The Empty phase of the Popt protocol is identical to that of the Pstd and Post-op protocols. It consists
of the following execution steps:
1. The centrifuge and pump stop.
2. The 9 ml of saline solution in the line between the bowl and clamps is returned to the reservoir
line by keeping the fill clamp open, the other clamps closed, and slowly rotating the pump
clockwise for a short time.
• When the Empty phase is entered manually by touching the Empty button before the
Wash phase is completed, then this only takes place if at least 9 ml of fluid were moved
during the Wash phase (this does not happen if Pfat is in use).
3. The pump stops, the fill clamp closes, and the empty clamp opens.
4. In order to move the remaining fluid from the bowl to the RBC bag, the pump begins rotating
clockwise with an appropriate acceleration. It reaches either the empty factory pre-set speed, or,
if the pump speed has been modified by the operator in a previous cycle, the new speed.
5. When air is detected in the line, the bowl is presumed empty and the pump stops, the empty
clamp closes, and the Ready screen is displayed on the touch screen.
Pstd
The Pstd protocol is intended to process the blood recovered from the operating field or the residual
volume of an extra-corporeal circuit. It has been designed to achieve a minimum RBC concentration
and wash quality in the shortest processing time. This protocol runs in less time than the Popt protocol
for a given volume of blood to process.
Fill Phase
The Fill phase of the Pstd protocol is simpler than that of the Popt protocol. It consists of the following
execution steps:
1. The centrifuge lid lock is engaged, the fill clamp is opened, and the centrifuge accelerates up to
5,600 rpm.
Note: If the bowl already contains blood and the buffy coat is detected before the centrifuge reaches
its programmed speed, the pump shall not start until 15 seconds after the centrifuge reaches its target
speed. This delay is intended to stabilize the buffy coat. The operator may manually start the pump
during this wait by touching the Play button. If the buffy coat is still detected after the delay, then the
pump is not started and the next step is skipped.
2. Once the centrifuge reaches its set speed, the pump begins to rotate counter-clockwise, pumping
blood from the reservoir to the bowl, at the factory defined speed. Filling of the bowl continues
until the buffy coat is detected.
3. Once the buffy coat is detected, switch to the Wash phase happens automatically.
Wash and Empty Phases
The wash and empty phases of the Pstd protocol are similar to those of the Popt protocol detailed in
sections “Wash Phase” on page 5-24 and “Empty Phase” on page 5-25.