Patent ID: 8690838
Filing Date: 2014-04-08
Classification: A61M

Abstract:
1. A transdermal administration device comprising: a needle support with a plurality of microneedles formed at a tip portion thereof; a holder with the needle support placed therein, allowing the needle support to protrude itself therefrom and retract itself therein; a cap for covering the microneedles; a spring member placed between the needle support and the holder, for biasing the needle support in a protruding direction; an engaging portion formed at a base of the needle support; and an engaged portion formed in the holder, capable of engaging the engaging portion, wherein the engaging portion of the needle support can be engaged with the engaged portion of the holder when the needle support is retracted in the holder, wherein the cap includes a retaining portion placed inside the cap, the retaining portion capable of retaining a medical fluid, and wherein the cap includes a seal portion formed in a wall portion of the cap, the seal portion allowing a needle for providing the medical fluid to be inserted, and the needle penetrating through the seal portion can provide the medical fluid in the retaining portion.