It possesses bigger external surface product than bigger median

摘要

This invention regards the granular composition which in order to deliver the medicine to lung system is improved. The method of identifying the optimum form of the aerodynamics light particle where the applicants can disperse high-level is disclosed. The particle of this invention collapses at the time of processing the particle formation, is produced the hollow spherical medicine particle which is the wrinkle of very low envelope density, brings the medicine particle of the thin wall (namely, the ancestral particle) by producing. Furthermore, when as for the applicants, surface area parameter () is larger than 2, optimumly is larger than 3, this particle discovered the fact that especially it is optimum to the inhalation aerosol.