Multiple channel micropump apparatus and drive method

Abstract

The invention discloses a multi-channel micro-pump device and a driving method thereof. The device comprises at least one transport micro-channel for transporting liquid, and at least three extruding micro-channels for driving the transport micro-channel in the transport micro-channel. The liquid flows in a predetermined direction; the extruding microchannels are distributed on the side of the conveying microchannels, forming a two-layer structure distribution on the conveying microchannels; the extruding microchannels are correspondingly staggered and partly Overlap settings. The multi-channel micro-pump device and its driving method of the present invention, because multiple extrusion micro-channels arranged overlapping and intersecting are used to squeeze sequentially from the side, it is ensured that the liquids in the extruded delivery micro-channels can all be driven sequentially Squeeze delivery, which has a simple structure and can meet the requirements of solution delivery volume.

Description

technical field [0001] The invention relates to an improvement of a microfluidic technology, in particular to an improvement of a multi-channel micropump device and a driving method thereof. Background technique [0002] In recent years, with the vigorous development of microfluidic technology, it has been widely used in many fields such as biomedical research, clinical diagnosis, drug development, food hygiene and environmental monitoring. As a fluid drive system, the micropump is an important part of the microfluidic system. At present, a variety of micropumps have been reported in academic journals, but most of them are single-channel and are only used for the delivery of a single liquid. At present, high-integration and high-throughput analysis is the development trend of microfluidic technology, and there is an urgent need for a driving system that can transport dozens or even hundreds of different liquids at the same time. [0003] At present, many micropumps have be...

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Problems solved by technology

[0005] The above-mentioned micropump formed by a plurality of extruded microchannels is made of soft elastic material. Since the extruded microchannels are arranged at a certain distance, there will still be adjacent extruded microchannels during the operation of the micropump. The backflow between the flow channels and the retention of liquid between adjacent micro-channels cannot completely empty the liquid in the squeezed micro-channels, resulting in the low flow rate of the micropump and the flow rate is too small to meet the requirements. Solution delivery requirements for most microfluidic chips

[0006] Therefore, there are defects in the prior art, and there is room for improvement and development

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