Method of separating blood and apparatus for carrying out the method

US4675117A · kind A · utility

Assignee

• Fresenius AG · DE

Inventors

• Hans-Jürgen Neumann · Sankt Wendel, DE
• Artur Meisberger · Sankt Wendel, DE
• Wolfram Weber · Friedrichsthal, DE

Key dates

• Filing date: Mar 20, 1985
• Grant date: Jun 23, 1987
• Expiry date: Mar 20, 2005

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B2005/045
• WIPO field: Medical technology
• WIPO sector: Instruments

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 c…