Abstract: A blood bag system is provided with a PPP bag that is accommodated in a PPP bag pocket, and a liquid drug bag that is accommodated in a liquid drug bag pocket provided adjacent to the PPP bag pocket. The PPP bag includes a first internal space and a seal part that seals the periphery of the first internal space. The liquid drug bag includes a second internal space and a seal part that seals the periphery of the second internal space. A connection part that separably connects the seal part and the seal part is provided there between.

Abstract: A blood bag system includes a PPP bag and a liquid drug bag which are accommodated adjacent to each other in pockets of a centrifugal drum of a centrifugal transport device. In addition, the blood bag system includes a retaining portion that retains the PPP bag and the liquid drug bag together, and includes a cassette accommodated in the pockets in a retaining state of the retaining portion. The cassette has a detachment mechanism capable of detaching at least the PPP bag.

Abstract: A blood bag system includes a blood bag having a storage space for storing blood, a first tube that is connected to the blood bag and has a first flow path for communicating with the storage space, and a sealing member that is provided in the first tube and opens the first flow path by a breaking action. The first tube includes, at a position near the sealing member, an engagement portion for engaging with a centrifugal transport device with the sealing member disposed at the position where the breaking action is performed.

Abstract: A blood bag system is provided with a liquid drug bag having an internal storage space in which a liquid drug is stored, and a third tube that is connected to the liquid drug bag and has a flow path therein connected to the storage space. A retention mechanism for separably retaining the liquid drug bag and the third tube is provided between the outer surface of the liquid drug bag and the outer peripheral surface of the third tube. The third tube can thus be inserted together with the liquid drug bag when the liquid drug bag is accommodated in a liquid drug bag pocket of a centrifugal transport device.