Title:
CONTROL VALVE STRUCTURE AND USAGE METHOD THEREFOR, MICROFLUIDIC CHIP, AND NUCLEIC ACID EXTRACTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/019447
Kind Code:
A1
Abstract:
A control valve structure and a usage method therefor, a microfluidic chip (001), and a nucleic acid extraction device. The control valve structure comprises: a cover plate layer (101), which is provided with at least one first limiting hole (1011); a first channel layer (102), which is arranged opposite the cover plate layer (101) and is provided with a second limiting hole (1021), which is directly opposite the first limiting hole (1011); a first adhesive layer (103), which is located on the side of the first channel layer (102) that faces away from the cover plate layer (101) and is provided with first through holes (1031), which are in communication with the second limiting hole (1021); a second channel layer (104), which is located on the side of the first adhesive layer (103) that faces away from the first channel layer (102) and comprises a liquid output channel (1041), which is in communication with all of the first through holes (1031); at least one valve core (105), which respectively moves in a space defined by the first limiting hole (1011) and the second limiting hole (1021), which are correspondingly arranged; and at least one elastic membrane (106), which is respectively located on the side of each valve core (105) that is close to the second limiting hole (1021), wherein when the valve core (105) is embedded into the first limiting hole (1011), the elastic membrane (106) seals the first limiting hole (1011), the second limiting hole (1021), the first through holes (1031) and the liquid output channel (1041), so as to form a sample liquid flow channel, and when the valve core (105) is embedded into the second limiting hole (1021), the elastic membrane (106) seals the second limiting hole (1021), so as to block the sample liquid flow channel.
Inventors:
FAN BEIYUAN (CN)
XU WEIFENG (CN)
DING DING (CN)
XU WEIFENG (CN)
DING DING (CN)
Application Number:
PCT/CN2021/113108
Publication Date:
February 23, 2023
Filing Date:
August 17, 2021
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BEIJING BOE TECHNOLOGY DEV CO LTD (CN)
BEIJING BOE TECHNOLOGY DEV CO LTD (CN)
International Classes:
B01L3/00; F16K7/16; F16K31/00; F16K31/70
Foreign References:
| CN103244734A | 2013-08-14 | |||
| CN112774745A | 2021-05-11 | |||
| CN108636464A | 2018-10-12 | |||
| CN111423969A | 2020-07-17 | |||
| CN203925955U | 2014-11-05 | |||
| US20030183631A1 | 2003-10-02 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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