Blood Component Separation Device
AssigneeTerumo Kabushiki Kaisha
InventorsShigeyuki KIMURA, Takemi KOBAYASHI
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Abstract
The object of the invention is to provide a blood separation device that can reduce the total time for drawing blood to obtain high-concentration platelet liquid, thereby reducing the binding time of the blood donor. The device includes a temporary storage bag (Y2) (also serves as a buffy coat bag) which is a whole blood bag for storing whole blood drawn from a blood donor. The controlling unit of the device controls the device to draw whole blood from the blood donor in parallel with at least either a circulation flow step or an acceleration step, thereby storing the drawn whole blood in the temporary storage bag (Y2).
Claims24
A method of controlling a blood component separation device comprising:
- a centrifugal separator for separating a predetermined blood component from blood;
- and
- a container for containing the predetermined blood component that is centrifugally separated, wherein
- the method comprises:
- (a) a centrifugal separation step of introducing whole blood drawn from a blood donor into the centrifugal separator with a first blood pump to separate the whole blood into a plurality of blood components,
- (b) a circulation flow step of introducing a predetermined first blood component, among centrifugally separated blood components, stored in a first container into the centrifugal separator together with whole blood, and
- (c) a circulation/acceleration step of stopping supply of whole blood to the centrifugal separator after separating a predetermined amount of the first blood component in the circulation flow step, introducing only the first blood component stored in the first container to the centrifugal separator with a second blood pump to circulate the first blood component for a predetermined period of time, and increasing a circulation speed in the centrifugal separator to separate and collect a second blood component,
- whole blood drawn from the blood donor is temporarily stored in a temporary storage container during at least a period of time in the circulation/acceleration step, and
- one tube coupled to the temporary storage container is coupled to an outlet port of the centrifugal separator and the other tube is coupled between the first container and the second blood pump.
Dependencies are inferred from the claim text.