Patent ID: 7204637
Filing Date: 2007-04-17
Classification: B01F,B04B

Abstract:
1. An automated device for processing media contained in test tubes, providing homogenization or resuspension of substances, or disruption of living cells, or disintegration of tissues, or centrifugation of these media by rotation of the tubes about an axis/axes located outside said tubes, processing said media in said tubes in two consequent stages: the first is homogenization or resuspension of substances, or disruption of living cells, or disintegration of tissues, and the second is centrifugation of the media, said device comprising: (a) a rotor for said tubes having separated spaces accommodating one tube in one space, including a removable closure having an elastic ring that engages flanges of said tubes placed in said rotor, and presses said flanges against the rotor, and wherein each of said tubes is capable of changing its angular position under an applied outer force; (b) a driving means for rotation of said rotor, having a substantially vertical shaft; (c) a means for changing position of said rotor along said shaft, wherein said means for changing position of said rotor along the vertical axis of said shaft includes a sleeve having at least one spiral groove and a bush moveable about said sleeve, wherein said bush is attached to said rotor such that said rotor and said bush are moved as a single integrated part, and wherein said bush includes at least one pin accommodated by said at least one groove, moveable up and down inside the groove when said sleeve is rotated, fixing extreme upper and extreme lower positions of said bush and said rotor along said shaft; (d) a striking means for engaging and periodically striking said tubes when said rotor is rotated and is in one of its extreme positions along said shaft and wherein said striking means disengages said tubes when said rotor is in its other extreme position along said shaft.