Terumo BCT Trima Accel, Service Manual

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Blood Collection Process
This section describes the blood collection process.
Note: This section describes the blood collection process from the standpoint of the device electronics for field
service personnel. See the Operator’s Manual for detailed procedural information for the operator.
The Trima Accel system operates automatically when it is in Procedure mode. Pumps control the flow of
inlet blood, anticoagulant, platelets, plasma, and return blood. Centrifugal force and the inlet pump
control the red blood cell (RBC) flow. Donor data that is entered at the beginning of the procedure helps
the Trima Accel system perform software calculations (algorithms) that control operations. This donor
data—height, weight, and gender—is used to calculate the total blood volume (TBV) of the individual.
Once the Trima Accel system accumulates this data, it recommends optimal procedures or
combinations of products, and the operator chooses a procedure based on donor time limits. When the
Trima Accel system receives procedure instructions, it can set pump flow rates and centrifuge speed.
Automatic control of the RBC/plasma interface optimizes blood separation.
Figure 1-6: Trima Accel fluid flow diagram
First, the disposable tubing set is loaded onto the Trima Accel system. Once the cassette is loaded, the
Trima Accel system prompts the operator to clamp both the needle line and the sample bag line. The
anticoagulant (AC), return, and inlet pumps are run to pressure test the tubing set. If the tests are not
successfully completed, alarms are generated.
Operational Description
1-12 Trima Accel
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Automated Blood Collection System • Service Manual