THE FABRICATION METHOD OF FINE PARTICLE OF BIODEGRADABLE POLYMER AND A BIODEGRADABLE MATERIAL FOR RECOVERING TISSUES

摘要

A method for producing biodegradable polymer fine particles includes: a step of freezing biodegradable polymer particles and pulverizing the same by air blow or high-speed emulsification to form pulverized particles; and a step of washing the pulverized particles to form biodegradable polymer fine particles. The biodegradable polymer particles include at least one of first biodegradable polymer particles of a single component and second biodegradable polymer particles including a block copolymer of heterogeneous components.