Filtering a liquid suspension.

摘要

Blood from which plasma is to be separated is introduced at 94 to a gap between a cylindrical spinner 97 and a housing 72. The housing carries a replaceable membrane 80 through which plasma passes into channels between ribs 86 to exit at 87. The spinner is rotated by means of a magnet 98 in the spinner 97 and a stationary coil 100. Taylor vortices are developed in the gap, with a Taylor number between 70 and 250 with the result that the filter membrane is continually swept by the blood to prevent clogging with blood cells.