A universal device for fixing and connecting microfluidic chips with electrodes

Abstract

The invention provides a universal device for fixing and connecting a micro-fluidic chip with an electrode. According to the device, the micro-fluidic chip is fixed on a base by adopting a hard high polymer clamping plate and a screw; a guide pipe penetrates through a guide pipe through hole of the hard clamping plate, and is inserted into a fluid inlet / outlet of the chip so as to form fluid connection; a spring probe welded on a PCB penetrates through a probe through hole in the hard clamping plate, and is in contact with an electrode bonding pad of the chip so as to form electric connection; and the PCB is fixed on the base by adopting a screw. The universal device disclosed by the invention has the beneficial effects that (1) according to the device, the micro-fluidic chip can be fixed and the chip electrode is connected simultaneously, the stability is high, the chip does not move or drop, the device can be used for an automatic observation experiment with high requirements on accuracy and precision, welding is not needed during connection of the chip electrode, and the device is high in reliability and easy to integrate and can be repeatedly used; and (2) according to the device, the hard clamping plate is processed by adopting a transparent material, observation windows are hollowed in the base and the PCB, and the chip is conveniently subjected to optical observation or detection.

Description

technical field [0001] The invention provides a universal device for fixing and connecting a microfluidic chip with electrodes. It belongs to the field of microfluidic chips. technical background [0002] Microfluidics is an interdisciplinary research and application field of biology, chemistry, medicine, physics, electronics, materials, machinery and so on. Microfluidic chip, also known as Lab-on-a-chip (Lab-on-a-chip), integrates the basic operation units of sample preparation, reaction, enrichment, separation and detection in the process of biological, chemical and medical analysis into a micro-nano Scale on chip. The microfluidic chip uses microchannels as the basic structural unit, runs through the entire system with controllable fluid, and integrates a variety of biological, chemical, and medical analysis and detection functions to realize the miniaturization and integration of conventional equipment. [0003] When using microfluidic chips for detection and analysis...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a general-purpose device for fixing and connecting the microfluidic chip with electrodes, which is used to solve the problem of poor stability and easy displacement of the device for fixing the microfluidic chip in the prior art. , can not be applied to precise experiments and other problems; and the device connected to the electrode of the microfluidic chip is unstable, easy to fall off, difficult to integrate, and the welding process is easy to damage the chip processing materials, etc.

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