Micro-domain fluid covering-ratio control device

Abstract

The invention provides a control device for the covering proportion of micro-regional fluid, comprising two solution storage tanks, at least a connection pipeline, a fluid driver and two pipelines respectively connected with outside. And it utilizes the liquid level gravity of the two solution storage tanks to drive the fluid in them to simultaneously enter through the two pipelines respectively connected with outside into a reaction chamber so as to form different covering proportions of fluid in the reaction chamber. Besides, the invention assorts the fluid driver and the connection pipeline in pairs to complete liquid level transform of the two solution storage tanks so as to implement the transform of drainage area covering proportion of the reaction chamber and utilizes potential energy conservation principle to keep a constant fluid pressure in the reaction chamber in the transform course so as to reduce the interference in the reaction chamber.

Description

technical field [0001] The invention relates to a micro-domain fluid coverage ratio control device; in particular, it relates to a micro-domain fluid coverage ratio control device which can maintain a constant fluid pressure in a reaction chamber during the fluid coverage ratio conversion process. Background technique [0002] The use of microfluidic chips for biomedical detection or analysis has the advantages of reducing experimental errors in manual operations, improving system stability, reducing energy consumption and sample consumption, and saving manpower and time. However, due to the miniaturization of components, the target to be studied is more sensitive to many parameters in the experimental area, such as pressure, temperature, humidity, drug concentration and even changes in drug flow. The change of these parameters is enough to produce experimental interference and error for microbiochemical experiments, resulting in misjudgment of the experiment. Referring to ...

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Problems solved by technology

Otsuka et al. (Otsuka et al.) published a cell collector using the principle of flow velocity transformation (see μ-TAS, 1, 30, 2004), which can collect two types of cells without Valve parts are required, but its disadvantages are also prone to pollution problems

[0003] In the traditional biochemical field, if you want to do biochemical experiments, you need to operate one variable at a time. Even if you want to do multiple experiments at the same time, there are still different variables, because it is difficult to maintain a fixed and the same external environment. surroundings

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