Patent ID: 6824024
Filing Date: 2004-11-30
Classification: B01L,G01N

Abstract:
A device for at least one of aspirating and dispensing samples of a liquid with a movement unit, the device comprising:a hollow body having a cavity adapted to be essentially filled with a system liquid or a sample liquid, and having a movement element, acting on the cavity, for at least one of aspirating and dispensing the liquid; a first drive element engaged with or capable of being engaged with a first drive for displacing the movement element during at least one of aspirating and dispensing the liquid; a liquid line into which the cavity discharges; a pipette tip or an adapter for receiving a disposable pipette tip, the liquid line changing over to the pipette tip or the adaptor or including the pipette tip or the adapter; a flush line, the hollow body including a flush inlet which discharges from the flush line into the cavity; a carrier unit for moving the movement unit which is movably attached to the carrier unit in the direction of at least one of an X, or a Y, or a Z spatial axis, the carrier unit including at least one second drive element which is engaged with a second drive; and wherein the movement unit comprises the hollow body and the movement element, the first drive element, the second drive element, and the pipette tip or the adapter, as well as a pulse generator for generating pressure waves the liquid in the cavity during dispensing, all these elements being movable together in at least one direction of the X, or the Y, or the Z spatial axis with respect to the carrier unit.