| abstract |
PROBLEM TO BE SOLVED: To provide a microneedle array having a strength capable of withstanding an impact at the time of puncture. SOLUTION: The microneedle array has a sheet portion 116 and a plurality of needle portions 112 existing on the upper surface of the sheet portion, the needle portion contains a water-soluble polymer, and the sheet portion is highly water-soluble. The sheet portion contains molecules and has a central portion and an end portion, which are regions in which the plurality of needle portions are formed, and the average film thickness of the end portion is smaller than the average film thickness of the central portion. , Microneedle array. [Selection diagram] Fig. 1 |