PROBLEM TO BE SOLVED: To provide a needle device which is formed from a material having a low load on living bodies and can also form a hole in the skin suitably.SOLUTION: A needle device includes a support portion and a projecting portion extending from the support portion. The projecting portion is composed of a material including pectin and an alginate.COPYRIGHT: (C)2015,JPO&INPIT【課題】生体に低負荷な材料より形成され、好適に皮膚に穿孔し得る針状体を提供すること。【解決手段】本発明の針状体は、支持部と、前記支持部から延びた突起部とを具備し、前記突起部は、ペクチンとアルギン酸塩とを含む材料からなる。【選択図】 図1