Multiple channel micropump apparatus and drive method

A driving method and technology of micro-pumps, which are applied in the directions of micro-structure devices, micro-structure devices composed of deformable elements, pumps, etc. simple structure

Active Publication Date: 2008-09-03
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

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

Method used

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  • Multiple channel micropump apparatus and drive method
  • Multiple channel micropump apparatus and drive method
  • Multiple channel micropump apparatus and drive method

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specific example

[0032] Specific examples are given below to illustrate the beneficial effects of specific embodiments of the present invention:

[0033] 1. 96-channel micropump with improved structure

[0034] The micropump is composed of three layers of silica gel: the delivery microchannel for transporting the liquid is placed between two layers of extruded microchannels, the delivery microchannel is 20 microns deep and 100 microns wide, and the flow direction is arranged in the direction of the extruded microchannels They are perpendicular to each other; the upper and lower layers of silica gel are extruded micro-channels containing 5 and 7 respectively. The extruded micro-channels are 40 microns deep and 100 microns wide, and the extruded micro-channels are arranged in parallel with each other. , and the upper and lower extruded microchannels are arranged in a staggered and partially overlapping manner, and the width of the overlapping part is 25 microns. Driven by the control of the hig...

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Abstract

The present invention discloses a multi-channel micro pump device and driving method thereof. The device comprises at least one microflow transport channel to transmit liquid, and at least three extrusion microflow channels to drive liquid in microflow transport channel flowing along prearranged direction; the extrusion microflow channels distribute the side of microflow transport channel to form two layers on it and cross corresponding and superpose partially. The multi-channel micro pump device and driving method of the present invention employs superposition and cross a plurality of extrusion microflow channels extract from side in turn, ensures the liquid in extrusion microflow transport channel can be extracted and transmitted in turn, the structure of which is simple and the requirement of liquid transport capacity is reached.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B43/12B81B3/00
Inventor 王战会
Owner SHENZHEN INST OF ADVANCED TECH
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