UNEVEN STRUCTURE, PERCUTANEOUS ADMINISTRATION DEVICE, AND PERCUTANEOUS ADMINISTRATION DEVICE SET

摘要

PROBLEM TO BE SOLVED: To provide an uneven structure capable of controlling dissolution easily; and to provide a percutaneous administration device, and a percutaneous administration device set.SOLUTION: An uneven structure includes a substrate 21 having a first surface 21S, and a projection part 22 projecting from the first surface 21S. The uneven structure has a part containing polysaccharide, as a principal component, manifesting solubility into water by being cooled to a lower temperature than room temperature. The polysaccharide contains one or more polysaccharides selected from a group comprising hydroxypropylchitosan and hydroxybutylchitosan.SELECTED DRAWING: Figure 8