Patent ID: 8445019

Claim:
A microparticle dispersion liquid manufacturing apparatus comprising: a container having a mesh plate disposed to partition the interior of the container into upper and lower portions, configured for performing a process in which a poorly soluble drug and a dispersion stabilizer are dissolved in a volatile organic solvent, a residue, obtained by removal by evaporation of the organic solvent contained in the solution, is fixed on an inner wall of the lower portion of the container lower than the mesh plate, and water is injected into the upper portion of the container higher than the mesh plate; a light irradiating unit that irradiates light on the residue fixed on the inner wall on the lower portion of the container; and a flow unit that makes the water flow near an interface of the residue and the water in the interior of the container, wherein a microparticle dispersion liquid, having microparticles, containing the poorly soluble drug and the dispersion stabilizer, dispersed in water, is manufactured by the flow unit making the water flow near the interface of the residue and the water in the interior of the container and the light irradiating unit irradiating the light on the residue, and wherein the flow unit includes a stirring unit that is positioned on the mesh plate, that stirs the water injected into the upper portion of the container and makes the water flow near the interface of the residue and the water in the lower portion of the container.