Patent ID: 6832981
Filing Date: 2004-12-21
Classification: A61M,B04B

Abstract:
In combination, a centrifuge free of a sliding seal, a multi-lumen tube having a plurality of individual tubes of approximately equal length that are rotated free of tension around longitudinal axes thereof, and a holding element fixing said individual tubes of said multi-lumen tube at a support position along said tube length between ends thereof, said holding element being supported in a rotation frame of said centrifuge at said support position such that two partial sections of said tube length on either side of said support position are inside and outside of said rotation frame, respectively, said rotation frame quiding said multi-lumen tube around a separation unit which rotates in a direction opposite to rotation of said rotation frame, said individual tubes being wound around one another in opposite directions beginning from the support position and being fixed at said ends so that opposing torque action imposed on the two partial sections corresponds with the respective winding directions of said partial sections.