Particle analyzing instrument and liquid path system thereof

Abstract

The application discloses a particle analyzing instrument and a liquid path system thereof. The liquid path system includes a large-liquid-discharge-amount injector, a small-liquid-discharge-amount injector, four controllable valves and a plurality of pipelines, wherein the large-liquid-discharge-amount injector is used for not only providing a sheath liquid but also providing a cleaning liquid and a suction sample liquid; and the small-liquid-discharge-amount injector is used for not only collecting a sample but also providing a sample flow so that devices can be used repeatedly. By means of design of the pipelines, number of the controllable valves is saved. All functions of the liquid path system of a flow cytometry analyzing instrument, such as sampling, blood separating, sample preparing, flow cytometry measuring, cleaning and the like, can be completed just by for flow-controlling valves, thereby simplifying the structure of the liquid path system.

Description

technical field [0001] The present application relates to a particle analyzer, in particular to a liquid circuit system of the particle analyzer. Background technique [0002] Particle analyzers are used to detect and analyze the content of various tiny particles in liquid samples. In the medical field, particle analyzers are usually used for particle analysis in blood, body fluids, and immunity, such as blood analyzers or cell analyzers. It can detect, count and analyze various cells in blood. [0003] According to the different principles of particle detection and counting, the principles of particle classification methods include Coulter's principle and flow cytometry principle. The general principle of flow cytometry is as follows: a certain amount of diluted sample is reacted with reagents, and then the reacted sample is given to the flow chamber in the detection module, where the flow chamber provides an optical detection area, in which the The principle of sheath fl...

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Problems solved by technology

[0010] For the convenience of control, the syringes and controllable valves of each module are single-purpose, and these modules also need to be connected by pipelines, and valves are set on the pipelines to control the flow path, so the existing flow cytometry The hydraulic system of the analyzer requires at least 3 to 4 sets of syringes (i.e., sampling syringes, sheath fluid syringes, sample injection syringes, diluent syringes) to realize the above modules, 7 to 10 valves for fluid control, and complex Connecting pipeline network, the structure is very complex

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