Microfluidic chip, box device, microfluidic device

A microfluidic device comprising a microfluidic chip and a box device, wherein the microfluidic chip being assembled with the box device,

• wherein the microfluidic chip comprises;
• a first container configured to accommodate a first fluid;
• a second container configured to accommodate a second fluid comprising a cell suspension;
• a delivery channel comprising a first delivery channel and a second delivery channel, the first delivery channel communicating with the first container and the second delivery channel communicating with the second container, the first delivery channel intersecting and communicating with the second delivery channel at a confluence, a shape of the delivery channel being designed so that the first fluid and the second fluid merge at the confluence;
• a sorting channel downstream of the delivery channel and comprising a first sorting channel and a second sorting channel;
• and
• a collector downstream of the sorting channel and comprising a first collector and a second collector, the first collector communicating with the first sorting channel, and the second collector communicating with the second sorting channel,
• wherein the box device is configured to be used with the microfluidic chip, the microfluidic chip further comprises an inlet and an outlet, the box device comprises:
• an accommodating cavity configured to accommodate the microfluidic chip;
• an inlet unit communicated with the inlet of the microfluidic chip, the inlet unit being configured to store a first reagent and release the first reagent to the inlet of the microfluidic chip;
• and
• an outlet unit communicated with the outlet of the microfluidic chip, the outlet unit being configured to receive and store a second reagent processed by the microfluidic chip and flowing into the outlet unit from the outlet of the microfluidic chip,
• wherein the inlet unit comprises an inlet hole and a first storage cavity, the inlet hole is a through hole and communicates with the first storage cavity, the inlet hole is recessed from a surface of the box device to an inside of the box device, and the first storage cavity is on a side of the inlet hole away from the surface of the box device.