Control valve structure, using method thereof, microfluidic chip, and nucleic acid extraction device
AssigneeBeijing BOE Technology Development Co., Ltd.
InventorsBeiyuan Fan, Weifeng Xu, Ding Ding
Life of this patent
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Abstract
A control valve structure, a using method thereof, a microfluidic chip, and a nucleic acid extraction device. The control valve structure includes: a cover plate layer, a first channel layer, a first adhesive layer, a second channel layer, at least one valve core, and at least one elastic film. When the valve core is embedded in the first limiting hole, the elastic film seals the first limiting hole, and the second limiting hole, the first through hole and the liquid outlet channel form a sample liquid flow channel; and when the valve core is embedded in the second limiting hole, the elastic film seals the second limiting hole so as to block the sample liquid flow channel.
Claims20
A control valve structure, comprising:
- a cover plate layer, comprising at least one first limiting hole;
- a first channel layer opposite to the cover plate layer, provided with at least one second limiting hole at a position corresponding to the at least one first limiting hole;
- a first adhesive layer on a side, away from the cover plate layer, of the first channel layer, provided with at least one first through hole at a position corresponding to the at least one second limiting hole, wherein the at least one first through hole communicates with the at least one second limiting hole, respectively;
- a second channel layer on a side, away from the first channel layer, of the first adhesive layer, comprising a liquid outlet channel communicating with the at least one first through hole;
- at least one valve core, moving in a space defined by the at least one first limiting hole and the at least one second limiting hole disposed correspondingly;
- and
- at least one elastic film on a side, close to the at least one second limiting hole, of the at least one valve core, respectively;
- wherein when the at least one valve core is at least partially in the at least one first limiting hole, the at least one first limiting hole is sealed by the at least one elastic film so that the at least one second limiting hole, the at least one first through hole and the liquid outlet channel form a sample liquid flow channel;
- and when the at least one valve core is at least partially in the at least one second limiting hole, the at least one second limiting hole is sealed by the at least one elastic film so as to block the sample liquid flow channel;
- wherein the cover plate layer further comprises at least one first sample injection port, the at least one first limiting hole is located in a first region, and the at least one first sample injection port is located in a second region that is adjacent to the first region;
- and
- the first channel layer further comprises at least one second through hole communicating with the at least one first sample injection port, and at least one first liquid inlet channel communicating with the at least one second through hole and the at least one second limiting hole.
Dependencies are inferred from the claim text.