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

Claim 11:
12. A biological component collection system comprising:
a separation device having a first load detector and a second load detector, and for separating a biological component from a liquid containing at least one biological component;
a biological component collection device configured to be attachable to the separation device, wherein a circuit internal pressure is calculated from said first load detector and from said second load detector;
wherein the biological component collection device comprises a cassette body, the cassette body comprising:
a flow path through which the liquid flows, the flow path including a first branch and a second branch that is spaced apart from the first branch in a first direction on a surface of the cassette body;
a first port at a first end of the cassette body, wherein the liquid enters or exits the cassette body through the first port;
a first coupling member adjacent to the first port at the first end of the cassette body and that connects the first port, the first branch, and the second branch;
a second port at a second end of the cassette body opposite the first end, wherein the liquid enters or exits the cassette body through the second port;
a second coupling member adjacent to the second port at the second end of the cassette body and that connects the second port, the first branch, and the second branch, wherein the first branch and the second branch are spaced apart from one another along a length of the surface of the cassette body that corresponds to a distance between the first coupling member and the second coupling member;
a first soft portion in the first branch of the flow path, and which is pressed by the first load detector when the separation device is in operation; and
a second soft portion in the second branch of the flow path, and which is pressed by the second load detector;

wherein the second soft portion is more easily deformable than the first soft portion, and
wherein the circuit internal pressure is calculated using data acquired by the first load detector and reference data acquired by the second load detector.