Disposable assembly for separating blood or scrubbing a blood component
View Patent ↗The invention relates to a centrifugation enclosure ( 1 ) made of rigid plastic that comprises a member ( 1 b ) adapted to engage with the driving organ of a centrifugation machine (M) and a communication member ( 5 ) between the enclosure ( 1 ) and the outside, made of rigid plastic and comprising un first duct ( 5 a ) extending therethrough for supplying said enclosure ( 1 ) as well as two ducts ( 5 b, 5 c ) extending therethrough for discharging the separated components. A holder ( 3 ) made of rigid plastic and having a network of channels ( 4 a, 4 b, 4 c ) formed therein connects the ducts ( 5 a, 5 b, 5 c ), respectively, to supply (P 1 ) and reception (P 2, P 3 ) tanks, with side sealing members ( 6 ) of said channel network ( 4 a, 4 b, 4 c ). The ends of the ducts ( 5 a, 5 b, 5 c ) are adjacent to the respective ends of the channels ( 4 a, 4 b, 4 c ), and the ends of the ducts ( 5 a, 5 b, 5 c ) have surfaces mating with the end surfaces of the respective channels ( 4 a, 4 b, 4 c ), said mating surfaces being connected to one another.
1. A disposable assembly for separating blood or the washing of a blood component by centrifugation, comprising a circular centrifuge chamber made of a rigid plastic, comprising, at an end lying on its axis of rotation, an element shaped in order to mesh with a drive member of a centrifuge machine and, at an opposite end, a member for interaction of said chamber with the outside made of a rigid plastic, connected to said centrifuge chamber by a rotary joint and passed through by a tube to supply this chamber and by at least one outlet tube for draining at least one of the separate constituents, a support made of a rigid plastic in which a network of channels is formed in order to connect said tubes respectively to a supply reservoir for the blood to be separated and to at least one reception reservoir for a separated constituent, elements for laterally closing this network of channels in a sealed manner and means for circulating the fluids through this network of channels from the supply reservoir to the reception reservoirs wherein the ends of said tubes passing through said member causing said chamber to interact with the outside, concentric with said axis of rotation, are adjacent to the respective ends of said channels, in that the ends of said tubes have surfaces complementary to the surfaces of the ends of said respective channels, and in that these complementary surfaces are fixed to each other by joints in a sealed manner so that said support and said member for causing said chamber to interact with the outside form a rigid assembly.
2. The assembly as claimed in claim 1 , in which the fixings between the surfaces of the respective ends of said tubes and said channels are non-removable fixings.
3. The assembly as claimed in claim 2 , in which said support is formed in a single piece with a case.
4. The assembly as claimed in claim 3 , having an opening for at least partly receiving the centrifuge chamber, the part of this case opposite that which is adjacent to said support having a second opening to allow the passage of said element shaped to mesh with drive means of the centrifuge machine.
5. The assembly as claimed in claim 4 , in which said support is a planar support.
6. The assembly as claimed in claim 3 , in which said support is a planar support.
7. The assembly as claimed in claim 2 , in which said support is a planar support.
8. The assembly as claimed in claim 7 , in which said planar support is inclined relative to the axis of rotation of said centrifuge chamber.
9. The assembly as claimed in claim 7 , in which said planar support is perpendicular to the axis of rotation of said centrifuge chamber.
10. The assembly as claimed in claim 1 , in which said support is formed in a single piece with a case.
11. The assembly as claimed in claim 10 , having an opening for at least partly receiving the centrifuge chamber, the part of this case opposite that which is adjacent to said support having a second opening to allow the passage of said element shaped to mesh with drive means ( 11 a ) of the centrifuge machine.
12. The assembly as claimed in claim 11 , in which said support is a planar support.
13. The assembly as claimed in claim 12 , in which said planar support is inclined relative to the axis of rotation of said centrifuge chamber.
14. The assembly as claimed in claim 12 , in which said planar support is perpendicular to the axis of rotation of said centrifuge chamber.
15. The assembly as claimed in claim 10 , in which said support is a planar support.
16. The assembly as claimed in claim 15 , in which said planar support is inclined relative to the axis of rotation of said centrifuge chamber.
17. The assembly as claimed in claim 15 , in which said planar support is perpendicular to the axis of rotation of said centrifuge chamber.
18. The assembly as claimed in claim 1 , in which said support is a planar support.
19. The assembly as claimed in claim 18 , in which said planar support is inclined relative to the axis of rotation of said centrifuge chamber.
20. The assembly as claimed in claim 18 , in which said planar support is perpendicular to the axis of rotation of said centrifuge chamber.