Patent ID: 8070667

Claim:
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.