Patent ID: 8348823

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 the centrifuging chamber can rotate, said fixed axial inlet and outlet element comprising an inlet pipe for the blood that is to be spun in the centrifuging chamber, said inlet pipe passing longitudinally through said axial inlet and outlet element, said fixed axial inlet and outlet element comprising 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 centrifuging 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 said first separated constituent can be drawn off continuously, said 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 centrifuging 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 said second separated constituent can be drawn off continuously, wherein said centrifuging chamber is of elongate tubular shape, a delivery opening of said inlet pipe being located near the bottom of said centrifuging chamber; wherein the centrifugal chamber comprises a cylindrical longitudinal wall extending substantially from a bottom height of the delivery opening of the inlet pipe to top heights of the inlet openings of the first and second outlet passages; wherein the cylindrical longitudinal wall of said centrifuging chamber forms a flow and centrifuging longitudinal surface for the physiological liquid; wherein a free cylindrical centrifuging space extends radially from the fixed axial inlet and outlet element to the cylindrical longitudinal wall of the centrifugal chamber substantially between the bottom height and the top heights for said first and second constituents of said physiological liquid to be separated; wherein said first and second outlet passages for said first and second separated constituents both communicate with the top end of said cylindrical centrifuging space; and wherein said first and second constituents are separated near the top end of said centrifuging chamber and respectively sucked out into said inlet opening of said first outlet passage and said inlet opening of said second outlet passage.