Title:
CENTRIFUGAL MICRO-FLUIDIC CHIP
Document Type and Number:
WIPO Patent Application WO/2024/082564
Kind Code:
A1
Abstract:
Disclosed in the present invention is a centrifugal micro-fluidic chip. The centrifugal micro-fluidic chip comprises a processing structure and a backflow structure which are sequentially arranged in a movement direction of a sample liquid. The backflow structure comprises an arc-shaped channel, a recycling chamber and a backflow channel. The backflow structure is added to the centrifugal micro-fluidic chip provided by the present invention; under a centrifugal state, after the micro-fluidic chip completes the treatment of the sample liquid, the sample liquid containing a product enters the arc-shaped channel. Because a contact angle between the sample liquid and the arc-shaped channel and a contact angle between the sample liquid and the backflow channel are large, the smaller the channel sizes are, the stronger the surface tension effect is; and the size of the backflow channel is larger than that of the arc-shaped channel, so that after the micro-fluidic chip stops rotating, the sample liquid in the arc-shaped channel enters the backflow channel under the action of surface tension and further enters the recycling chamber located at the circle center. When a reaction product needs to be recycled or detected, operation and treatment can be directly performed on the recycling chamber the relative position of which is unchanged, thereby avoiding the positioning problem.
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Inventors:
JIANG XINGYU (CN)
GENG CHUNYANG (CN)
GENG CHUNYANG (CN)
Application Number:
PCT/CN2023/085995
Publication Date:
April 25, 2024
Filing Date:
April 03, 2023
Export Citation:
Assignee:
UNIV SOUTHERN SCI & TECH (CN)
International Classes:
B01L3/00; C12Q1/6844; C12Q1/6869
Foreign References:
| CN109884328A | 2019-06-14 | |||
| CN101748204A | 2010-06-23 | |||
| CN207586245U | 2018-07-06 | |||
| JP2007232673A | 2007-09-13 | |||
| EP3698872A1 | 2020-08-26 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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