Biological component cassette, biological component kit, and biological component treatment system

A biological component cassette, comprising:

• a cassette main body formed in a sheet shape that possesses flexibility, the cassette main body formed by joining together a pair of resin sheets with a plurality of flow paths between the resin sheets;
• a first flow path in an interior of the cassette main body through which a liquid containing at least one biological component is allowed to flow;
• a second flow path in the interior of the cassette main body through which the liquid containing at least one biological component is allowed to flow;
• and
• a sheet separating portion in which entire outer circumferential surfaces of the first and second flow paths are separated from the resin sheets, the sheet separating portion including:
• a first cutout disposed in the cassette main body at a first position adjacent to a first side of the first flow path;
• a second cutout disposed in the cassette main body at a second position adjacent to a first side of the second flow path;
• and
• a third cutout disposed in the cassette main body at a third position adjacent to respective second sides of the first and second flow paths such that the first flow path passes between the first cutout and the third cutout and the second flow path passes between the second cutout and the third cutout.

A biological component kit, comprising:

• a tube through which a liquid containing at least one biological component is allowed to flow;
• and
• a biological component cassette to which the tube is connected, wherein the biological component cassette comprises:
• a cassette main body formed in a sheet shape that possesses flexibility;
• a first flow path in an interior of the cassette main body through which the liquid containing at least one biological component is allowed to flow;
• a second flow path in the interior of the cassette main body through which the liquid containing at least one biological component is allowed to flow;
• and
• a flow path opening/closing portion that accommodates structures configured to selectively open and close the first and second flow paths, wherein the flow path opening/closing portion includes:
• a first cutout disposed in the cassette main body in a thickness direction and at a first position adjacent to a first side of the first flow path;
• a second cutout disposed in the cassette main body in the thickness direction and at a second position adjacent to a first side of the second flow path;
• and
• a third cutout disposed in the cassette main body in the thickness direction and at a third position adjacent to respective second sides of the first and second flow paths such that the first flow path passes between the first cutout and the third cutout and the second flow path passes between the second cutout and the third cutout.

A biological component treatment system, comprising:

• a biological component kit including a tube through which a liquid containing at least one biological component is allowed to flow, and a biological component cassette to which the tube is connected;
• and
• a biological component treatment device in which the biological component kit is set,
• wherein the biological component cassette comprises:
• a cassette main body formed in a sheet shape that possesses flexibility;
• a first flow path in an interior of the cassette main body through which the liquid containing at least one biological component is allowed to flow;
• a second flow path in the interior of the cassette main body through which the liquid containing at least one biological component is allowed to flow;
• and
• a flow path opening/closing portion that accommodates structures configured to selectively open and close the first and second flow paths, wherein the flow path opening/closing portion includes:
• a first cutout disposed in the cassette main body in a thickness direction and at a first position adjacent to a first side of the first flow path;
• a second cutout disposed in the cassette main body in the thickness direction and at a second position adjacent to a first side of the second flow path;
• and
• a third cutout disposed in the cassette main body in the thickness direction and at a third position adjacent to respective second sides of the first and second flow paths such that the first flow path passes between the first cutout and the third cutout and the second flow path passes between the second cutout and the third cutout, and
• wherein the biological component treatment device includes a displaceable body inserted into the third cutout in a set state of the biological component kit, and which is configured to open and close the first and second flow paths when displaced.