P/N 53063-30, Manual revision: B
2-18
Describing the Cell Saver 5+ System Components
The following series of drawings illustrate the operation of the bowl through
the FILL-WASH-EMPTY states.
Filling the bowl to the appropriate level as shown will give a hematocrit of at
least 50% for the washed cells. The hematocrit may be increased by filling
the bowl until the red cell interface is closer to the center of the bowl,
however manually regulating the interface in this manner is not advised.
Conversely, a lower hematocrit will result if filling is terminated before the
red cell interface reaches the level shown. Under automatic control, the
interface is controlled by the optical bowl sensor to produce consistently
good results.
In general, filling the bowl to a lower hematocrit will necessitate a higher
volume of wash solution to achieve a given result. Because the hematocrit is
lower, there is more supernatant in the bowl. In order to dilute the larger
volume of supernatant, more wash solution is needed.
Emptying red blood cells from the bowl is accomplished by braking the
centrifuge to a complete stop, then reversing the flow in the pump tubing.
Note: Recommendations for the use of anticoagulant solution presented in
this manual are intended for use as guidelines only. For hypercoagulable
patients, the operator may find it necessary to increase the anticoagulant
dosage to prevent clotting.