sorin 75220, Operator'S Manual, Page: 190 / 304

Preoperative Sequestration (PPP and PRP)
10-12
20077/021 US
X
TRA
Operator’s Manual
Figure 10-8 Sequestration Fill Phase of the Processing Screen
As blood enters the bowl during the Fill phase, centrifugation concentrates the red blood cells into the
bowl while the platelet-poor plasma is spilled into the collection bag. This continues until the buffy
coat is detected, which indicates that the majority of PPP has been spilled into the collection bag.
1. Pump Speed
The pump speed (ml/min.) is displayed in a text box in the processing displet to the right of the
pump rotor icon. Except during the Fill phase of the Popt and Post-op protocols, the pump
speed may be adjusted by touching the text box and using the up and down arrow buttons
(refer to “Modification of Parameters” on page 5-5).
Note: Fill speeds may affect platelet yields. Decreasing the fill speed increases the percentage of
platelets harvested and, conversely, increasing the fill speed decreases the percentage of platelets
harvested.
2. Fill Status Line
The fill status line indicates the current phase with the fill icon. To the right of the icon is a text
field which displays the amount of fluid which has been pumped into the bowl (ml) during the
current cycle.
3. Play/Pause button
Touching the Pause button pauses the processing cycle: the pump is stopped, the
Pause button changes to the Play button, and the word “Paused” flashes and a 5:00
minute countdown timer appears in the title bar of the processing displet. The
centrifuge will continue to spin for five minutes.
If Automatic modes are active, phase buttons appear in the button bar of the processing screen while
the cycle is paused. This allows for manual intervention in the phase progression. (If Manual mode is
active, these phase buttons are always visible.)
Touching the Play button resumes processing from the state the phase was in when it was paused.
Pausing and resuming a cycle is discussed further in “Pausing and Resuming the Cycle” on page 5-11.
The next phase of the processing cycle depends on the active protocol:
4. When processing with the PPP protocol, processing advances directly from the Fill phase to the
Empty phase (there is no Spill phase, because PRP is not collected):
◊ If operating in Automatic mode the transition to the Empty phase will happen automatically
once the buffy coat is detected.
◊ If operating in Manual mode with the RBC detector enabled: a message will be displayed in
the message area and the pump will stop. Touch the Empty phase button in the button bar
to advance to the Empty phase. To continue in the Fill phase, touch the Play button.
1 Pump speed 2 Fill Status line
3 Play/Pause button
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