This invention discloses a gas shear-based microfluidic droplet preparation device for
cell culture, belonging to the fields of
biomedical engineering and
cell culture technology. The device includes a
microfluidic chip body fixed on a substrate, a sample inflow module, a gas inflow module, a droplet generation module composed of coaxially arranged sample and gas channels, and a biocompatible solidification and collection
pool. This invention utilizes gas shear to avoid the
toxicity of organic solvents, and the collection
pool contains a mixture of culture medium and solidifying agent, achieving integrated droplet generation, solidification, and culture, thus reducing the risk of
contamination. Through channel size control, inner wall
cell adhesion inhibition, and multilayer coaxial structure design, it is possible to prepare cell
microsphere carriers with
uniform size, controllable
diameter (150-400 μm), and cell viability exceeding 93%, showing broad application prospects in three-dimensional
cell culture,
tissue engineering, and
regenerative medicine.