Abstract Method of separating blood, in particular for recovering thrombocytes and/or leucocytes, the whole blood coming from the donor being separated in a separation means of a centrifuge into an erythrocyte fraction, cell-poor plasma, a thrombocyte fraction and/or possibly a leucocyte fraction, the separated fractions of the blood being discharged via a flexible tubing system of discharge lines out of the separation chambers of the centrifuge and constantly predetermined amounts of separated cell-poor plasma returned to the whole blood to be separated or to the already separated erythrocytes in the separation chamber, and a separation apparatus for carrying out the method comprising a separator having one or more separating chambers connected together and a flexible tubing system which includes a supply line (1, 2) for the supply of the whole blood to be separated to the separator and discharge lines each for the separate discharge of the erythrocyte fraction (10), the cell-poor plasma (3, 5), the thrombocyte fraction (11) and/or possibly leucocyte fractions and a branch line (7) disposed on the output side from the separator in the discharge line (3) for cell-poor plasma for returning cell-poor plasma, the supply and discharge lines and the branch lines (7) of the flexible tubing system being equipped with pumps, and the branch line (7) disposed on the output side of the separator is led off between the separator and the pump (6) and the pump (8, P) diposed in the branch line (7) delivers a predetermined plasma amount.
Separating device for carrying out a method of separating blood, in particular for recovering thrombocytes, leucocytes and/or plasma, comprising a separator (20) having one or several separating chambers being connected with each other as well as a tubing system which includes a supply line (1, 2) for the supply of the whole blood (WB) to be separated to the separator (20) as well as discharge lines for the separate discharge of each of the erythrocyte fraction (RBC), the cell-poor plasma (PPP), the thrombocyte fraction (PLT) and/or optionally of leucocyte fractions, and a branch line (7) disposed at the outlet of the separator in the discharge line for the cell-poor plasma (PPP) for returning clel-poor plasma (PPP), whereby the supply and discharge lines of the tubing system are provided with pumps, characterized in that the branch line (7) arranged at the outlet of the separator (20) is branched off stream up the pump (6) and that in the branch line (7) a pump (8, resp. 9) is provided which conveys a predetermined amount of plasma.
Claim 2
Dependent Claim
174 words
Separating device for carrying out a method of separating blood, in particular for recovering thrombocytes, leucocytes and/or plasma, comprising a separator (20) having one or several separating chambers being connected with each other as well as a tubing system which includes a supply line (1, 2) for the supply of the whole blood (WB) to be separated to the separator (20) as well as discharge lines for the separate discharge of each of the erythrocyte fraction (RBC), the cell-poor plasma (PPP), the thrombocyte fraction (PLT) and/or optionally of leucocyte fractions, and a branch line (7) disposed at the outlet of the separator in the discharge line for the cell-poor plasma (PPP) for returning clel-poor plasma (PPP), whereby the supply and discharge lines of the tubing system are provided with pumps, characterized in that the branch line (7) arranged at the outlet of the separator (20) is branched off stream up the pump (6) and that in the branch line (7) a pump (8, resp. 9) is provided which conveys a predetermined amount of plasma.
Claim 3
Dependent Claim
13 words
Separating device according to claim 1, characterized in that regulatable pumps are provided.
Claim 4
Dependent Claim
35 words
Separating device according to claim 1 or 2, characterized in that the branch line (7) is connected to the supply line (1) for the whole blood to be separated downstream of the blood pump (8).
Claim 5
Dependent Claim
30 words
Separating device according to claim 1 or 2, characterized in that said branch line (7) is connected to the part of the separation chamber in which separated erythrocytes are disposed.
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