Patent ID: 11925741
Assignee: TERUMO KABUSHIKI KAISHA
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. The circuit internal pressure acquisition method according to claim 15, wherein the biological component collection device further comprises a third soft portion forming a hollow portion in which the liquid containing at least one biological component does not flow during operation of the separation device, and which is pressed by a third load detector provided in the separation device;
the circuit internal pressure acquisition method further comprising:
a first measurement step of pressing the first soft portion in a state in which the liquid containing the at least one biological component is delivered to the first branch of the flow path, and measuring a load α1 associated with pressing of the first soft portion;
a second measurement step of pressing the third soft portion, and measuring a load α2 associated with pressing of the third soft portion; and
a differential load calculation step of calculating a differential load α obtained by subtracting the load α2 measured in the second measurement step from the load α1 measured in the first measurement step;

wherein, in the internal pressure calculation step, the circuit internal pressure of the biological component collection device is calculated using the calculated differential load a and the corrected reference data.