Back-flow preventer used for controlling liquid of micro-fluidic chip and micro-fluidic chip thereof

A technology of anti-reflux device and microfluidic chip, which can be used in fluid controllers, laboratory containers, laboratory utensils, etc., and can solve the problem of insufficient flux.
CN106902905AActive Publication Date: 2017-06-30NANJING LANSION BIOTECH CO LTD
8 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NANJING LANSION BIOTECH CO LTD
Publication Date
2017-06-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a back-flow preventer used for controlling liquid of a micro-fluidic chip and the micro-fluidic chip thereof. The back-flow preventer comprises a micro-fluidic channel and a back-flow preventing structure, the back-flow preventing structure is positioned over the micro-fluidic channel and has a back-flow preventing channel; the back-flow preventing channel can lift the liquid level height of the micro-fluidic channel at the installation position of a back-flow preventing structure; when the micro-fluidic channel is connected with the air passage, under driving of air pressure provided by air passage, liquid level height pressure of the micro-fluidic channel which is lifted by the back-flow preventing channel is overcome, and the liquid in the micro-fluidic channel at two sides of the back-flow preventer is urged to a circulation state. The back-flow preventer has good back-flow preventing function.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a liquid control anti-backflow device for a microfluidic chip and a microfluidic chip comprising the backflow device. Background technique

[0002] Immunolateral flow-through diagnostic technology is a stable and practical technology suitable for use in various point-of-care tests (POCT) or on-site.

[0003] In the immune system response system, the CV is large due to system reasons, and accurate quantification cannot be achieved. The immunodiagnostic method based on microfluidic technology can effectively avoid the above problems.

[0004] There are two types of microfluidics: passive and active. Passive microfluidics still requires capillary force to achieve liquid-forward lateral flow. However, due to the different viscosities of different samples, especially whole blood samples, the liquid flow rate cannot be uniform.

[0005] Active microfluidics can effectively avoid the above problems, and can give forward thrust to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More