Patent ID: 8663702
Filing Date: 2014-03-04
Classification: A61K,A61P

Abstract:
1. A microparticle dispersion liquid manufacturing method comprising: a dissolving step of dissolving a poorly soluble drug and a dispersion stabilizer in a volatile organic solvent; a fixing step of performing elimination by evaporation of the organic solvent, contained in a solution obtained in the dissolving step, and fixing a residue, obtained by the organic solvent elimination, at a fixed position on an inner wall of a syringe; a water injecting step of injecting water into an interior of the syringe after the fixing step such that the residue remains fixed on the inner wall of the syringe and is immersed in the water; and an irradiating step of irradiating light on the residue fixed on the inner wall of the syringe after the water injecting step to manufacture a liquid having microparticles, containing the poorly soluble drug and the dispersion stabilizer, dispersed in water, wherein in the irradiating step, light is irradiated from outside a region of the inner wall of the syringe on which the residue is fixed, and the irradiated light is made to propagate in an order of the syringe, the residue, and the water.