Patent ID: 8070664

Claim:
A disposable device for the continuous centrifugal separation of a physiological liquid, particularly blood, comprising: a fixed axial inlet and outlet element about the axis of which a centrifuging chamber is mounted such that it can rotate, an inlet pipe for the blood that is to be spun in the centrifuge passing longitudinally through said axial inlet and outlet element, a first outlet passage for at least a first separated constituent, wherein an inlet opening of said first outlet passage is located (i) near a top end of said chamber located opposite to a bottom of said centrifuging chamber and (ii) in a region where said first separated constituent that has the lowest specific mass becomes concentrated so that it can be drawn off continuously, this first outlet passage passing through a longitudinal portion of said fixed axial inlet and outlet element, a rotary seal between said fixed axial element and said centrifuging chamber, said fixed axial inlet and outlet element comprising a second outlet passage for at least a second separated constituent, wherein an inlet opening of said second outlet passage is located (i) near the top end of said chamber opposite to said bottom and (ii) in a region of said flow where said second separated constituent that has the highest specific mass becomes concentrated so that it can be drawn off continuously, wherein said centrifuging chamber is made of plastic and is of elongate tubular shape, the delivery opening of said inlet pipe being located near the bottom of said centrifuging chamber, so that a longitudinal wall of said centrifuging chamber forms a flow and separation surface for the liquid to be separated, wherein the longitudinal wall of said centrifuging chamber that forms a flow and separation surface for the liquid to be separated has substantially the shape of a cylinder generated by a straight line parallel to a main longitudinal axis of said cylinder.