< Topic >This invention improves the medicine transmission effect, offers the micro needle which also the controversial issue where the needle breaks prevents.SolutionsIt features that it includes the body where it includes the bay where the inclined section and the external wall the external wall gradient are rectilinear form, possessing specified depth alongside the external wall of the aforementioned inclined section or the bay, the needle and the aforementioned needle which include the channel which is formed it is joined and makes move and/or supports the aforementioned needle and. On the one hand, it features that it includes the body where as for the micro needle device which depends on this invention as for the micro needle of this invention, it includes the bay where the inclined section and the external wall the external wall gradient are rectilinear form, possessing specified depth alongside the external wall of the aforementioned inclined section or the bay, the needle and the aforementioned needle which include the channel which is formed it is joined and makes move and/or supports the aforementioned needle and. In addition, the micro needle device of another configuration which depends on this invention, when being pressurized vis-a-vis the skin in order the multiple which arrives for the Tip of the micro needle to be extended to outside to the Chen cortex of the aforementioned skin, although the infrared ray or infrared ray generation section which is irradiated to the aforementioned skin through the micro needle head section and inside or outside the micro needle are laid out and the infrared ray generation section which generate the far infrared line wire generate the infrared ray or far infrared line wire features that it includes the current supply section which supplies necessary energy and.< Choice figure >Drawing 1【課題】本発明は、薬物伝達効果を向上させ、ニードルが折れる問題点も防止するマイクロニードルを提供する。【解決手段】外壁が傾いた傾斜部及び外壁が直線形状である直線部を含み、前記傾斜部または直線部の外壁に沿って所定の深さを有して形成される溝を含むニードルと、前記ニード
