Patent ID: 7658121

Claim:
A flow cytometric apparatus comprising: a flow chamber adapted to be passed through by a sample to be detected in a row in sequence so that the sample can be detected, the flow chamber comprising a sheath liquid inlet for the injection of a sheath liquid and a sample needle for the injection of the sample; a sample storage means for storing the sample to be detected; a sample syringe for driving the sample to be detected into the flow chamber, so as to form a sample flow to be detected; a syringe-type injection-suction means comprising a sheath liquid syringe and a liquid-path switching means connected with it, wherein the liquid-path switching means controllably connects the sheath liquid inlet and the sample storage means for receiving the sheath liquid, and wherein the injection-suction means functions in a manner that, in a sample charging stage, the injection-suction means feeds the sample into the sample storage means so that the sample is temporarily stored in it in a ready-to-use state, and in a sheath-liquid injection stage, the injection-suction means feeds the sheath liquid into the flow chamber to form a sheath flow; and a control unit for controlling the operations of the sample syringe and the syringe-type the injection-suction means.