Filter device used for micro device

Abstract

The invention provides a filter device used for a micro device. The filter device is used for filtering a liquid flowing into the micro device. The filter device comprises a filter and a connecting part, wherein the filter is fixed onto the micro device, and comprises an input end and an output end; the connecting part is used for connecting the output end of the filter and the first end of the micro device; the liquid flows into the filter from the input end of the filter, flows out from the output end of the filter, and then flows into the micro device after flowing through the connecting part. After the technical scheme is adopted, integrated integration of the filter device and the micro device is realized, and the filter device is beneficial for volume production; the filter device isconvenient to install and maintain, the service life of the micro device is prolonged, and the cost is reduced; the filter device does not exceed the original size of the micro device, and is convenient to use in narrow working environments; the cross contamination risk of a large device in the prior art is avoided.

Description

technical field [0001] The invention relates to the field of micro-electromechanical devices, in particular to a filter device for micro devices. Background technique [0002] Micro-electromechanical devices are widely used in all walks of life, especially in the field of bioengineering, which often require the use of micron-scale channels, for example, the uniformly mixed mixture of DNA buffer is added to the micro-reaction tank processed on the solid support, And let the mixture participating in the biochemical reaction repeatedly pass through the solid support, where the "micro-reaction tank" is a microchannel, and the solid support is also called a micro-device. The above-mentioned microchannels are often used to simulate the capillary network, and there are many problems in the application, that is, due to the narrowness of the microchannels, the flow of the mixture makes it easy to block, which in turn causes the product to have a low service life and is easily damaged...

AI Technical Summary

Problems solved by technology

The above-mentioned microchannels are often used to simulate the capillary network, and there are many problems in the application, that is, due to the narrowness of the microchannels, the flow of the mixture makes it easy to block, which in turn causes the product to have a low service life and is easily damaged

[0003] The existing technology adopts the repeated positive pressure and negative pressure cleaning method through reagents to solve the problem of microchannel blockage

Another solution in the prior art is to add a filter device at the front end of the micro-device. However, the realization of this method requires the installation of many additional spare parts and power devices for support, including pump valves, air sources, screw rods and software. Control drive, etc., the disadvantages are that the device structure is complex and the working condition is unstable, the later maintenance is difficult, and the maintenance cost is high

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