| 主权项 |
1. A processor unit for processing and controlling a preparation of a blood sample, said processor unit comprising a preparation unit, the blood sample being placed in said processor unit,
said preparation unit comprising several chambers communicating with each other at predetermined steps under the processing of the blood sample, a piston placed in a first chamber for containing the blood sample, the first chamber comprising a cylindrical wall—an outer first chamber wall—a bottom wall comprising a surface of the piston, and a top wall, said walls embracing the first chamber, wherein the unprocessed blood sample is arranged in said first chamber, and said piston is adapted to be moved coaxially with a centre axis of the preparation unit by first moving means from a first position to a new position different from the first position, a volume of the first chamber being reduced by said first moving means whereby a part of the processed blood moves from the first chamber to a second chamber placed below the bottom wall of the first chamber, said chambers being in fluid connection with each other, said first moving means comprising a piston rod connected to a motor and the piston placed at the opposite end of the piston rod, said processor unit further including a spinel motor for centrifugation and rotating the preparation unit around an axis of rotation, whereby the blood sample is centrifuged into separate layers comprising an outer layer adhering to an inner side of the outer first chamber wall and an inner layer placed opposite the outer layer, said layers having a longitudinal direction, the processor unit further comprising a first unit being a light source/transmitter for emitting an outcome light signal and a second unit being a sensor for detecting an income light signal said first moving means is adapted to be activated/regulated by control means comprising a processor as a function of the income light signal of the second unit by said activation the movement of the piston is regulated, characterized in that the second unit detects the income light signal, said outcome light signal being emitted through the bottom wall of the first chamber, through the first chamber, and running parallel with the longitudinal direction of the layers. |
