US 11,944,963 B2
Sliding removable coaxial capillary microfluidic chip and preparation method therefor
Shengyang Tao, Liaoning (CN); Shi Feng, Liaoning (CN); and Wenbo Yang, Liaoning (CN)
Assigned to DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning (CN)
Appl. No. 18/257,829
Filed by DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning (CN)
PCT Filed Apr. 14, 2021, PCT No. PCT/CN2021/087194
§ 371(c)(1), (2) Date Jun. 15, 2023,
PCT Pub. No. WO2022/126946, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 202011501839.5 (CN), filed on Dec. 17, 2020.
Prior Publication US 2024/0042429 A1, Feb. 8, 2024
Int. Cl. B01L 3/00 (2006.01)
CPC B01L 3/502707 (2013.01) [B01L 2200/10 (2013.01); B01L 2300/0861 (2013.01); B01L 2300/12 (2013.01); B01L 2300/165 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A coaxial capillary microfluidic chip, comprising two circular capillaries and one square capillary, and further comprising:
a substrate which has a hole as a window;
an alignment platform I which is internally provided with a circular groove I and a square groove I formed successively on the same axis;
an alignment platform II which is internally provided with a circular groove II and a square groove II formed successively on the same axis;
a sliding platform which comprises a sliding base, wherein a fixed tube is fixed on the sliding base for the circular capillaries to pass through;
a sliding groove is formed on one side of the alignment platform II on the substrate, and the sliding groove is matched with the sliding base of the sliding platform, so that the sliding platform can move on the sliding groove;
the alignment platform I and the alignment platform II are respectively fixed on both sides of the window in the substrate; both ends of the square capillary are respectively placed in the square groove I and the square groove II, one circular capillary enters the square groove I through the circular groove I, one end of the other circular capillary is placed in the fixed tube, and the other end slides through the sliding platform and enters the square groove II through the circular groove II;
as a minimum, the lengths of the alignment platform II and the sliding platform as well as the distance between the alignment platform II and the sliding platform satisfy that: the sliding of the sliding platform makes the circular capillaries move within the scope of the window in the square capillary; and
the window is located in the center of the substrate, and the window is a rectangular hole used for observing the alignment of the two circular capillaries in the square capillary.