Auto-shunting microfluid apparatus

Abstract

The invention discloses a microfluid device which can automatically split streams and comprises a main body, a microflow channel structure is arranged on the main body, when being injected from the upstream of the microflow channel structure, the microfluid flows towards the downstream of the microflow channel structure by the interaction of gravity, adsorbability and surface tension, and can fill a plurality of branch microflow channels which have certain length and are arranged at the downstream of the microflow channel structure, thereby achieving the aim of the automatic quantitative stream splitting of the microfluid for the detection or analysis of biomedicine.

Description

technical field [0001] The present invention relates to a microfluidic device for automatic shunting, especially refers to a kind of microfluid in the process of flowing in the microfluidic channel, under the interaction of gravity, adsorption force and surface tension, the microfluid can be provided automatically The shunt device is easy to manufacture, low in cost, and easily compatible with various microfluidic systems, and can be applied to any field that requires microfluidics, such as cell-to-drug detection or biochemical detection. Background technique [0002] The use of microfluidic chips for biochemical 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, many phenomena and issues that need to be considered Factors are very different from the world that people are familiar with,...

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Problems solved by technology

[0012] Another example image 3 Shown is a microfluidic chip structure in which microfluidic channels are fabricated on optical disc plastic sheets by means of electroplating and compression molding. A plurality of capillary valves 2 are arranged on the turntable 1. Changing the rotation speed of the turntable 1 can make the microfluidic chips installed at different radii The reaction tank where the microfluid flows into; however, this type of turntable structure must be equipped with an additional capillary valve 2, and the turntable 1 is prone to vibration due to rapid rotation

[0013] In addition, there is currently another chip structure that uses photoresponsive polymers (Photoresponsive Polymer) to make microfluidic valves. It uses light irradiation to open the valves so that microfluids can pass through sequentially. However, the disadvantage is that the valves only can be used once

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