| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a micro-needle pricked easily and uniformly into a skin surface and/or a skin stratum corneum, without being broken, and dissolved easily in the skin surface and/or the skin stratum corneum. <P>SOLUTION: A micro-needle array is provided with the micro-needles constituted of 51-80 wt.% of hyaluronic acid, 10-40 wt.% of dextran, and 5-20 wt.% of polyvinyl pyrrolidone. A molecular weight of the hyaluronic acid is preferably 600 thousands to 4 millions. A pharmacologically effective component of a polymer may be contained in the micro-needle. <P>COPYRIGHT: (C)2012,JPO&INPIT |
