PROBLEM TO BE SOLVED: To provide a medical needle capable of easily incorporating an elastic member functioning as a shutter an insertion tool to be used for manufacturing medical needles and a method for manufacturing medical needles.SOLUTION: The medical needle 10 includes a needle body 12, and a protector 20. The protector 20 includes: a protector body 29 into which the needle body 12 can be inserted the elastic member 64 disposed within a side hole 32 of the protector body 29 and a cover member 62 covering the side hole 32. The cover member 62 is attached to the protector body 29 and the elastic member 64 is incorporated into the side hole 32 by inserting the elastic member 64 into the side hole 32 with the cover member 62 positioned at a prescribed position relative to the protector body 29, and sliding the cover member 62 toward the proximal end thereafter.COPYRIGHT: (C)2013,JPO&INPIT【課題】シャッタとして機能する弾性部材の組込を容易に行うことができる医療用針、医療用針の製造に用いる挿入治具及び医療用針の製造方法を提供する。【解決手段】医療用針10は、針体12と、プロテクタ20とを備える。プロテクタ20は、針体12が挿通可能なプロテクタ本体29と、プロテクタ本体29の側孔32内に配置された弾性部材64と、側孔32を覆うカバー部材62とを有する。プロテクタ本体29に対してカバー部材62を所定位置に位置決めした状態で弾性部材64を側孔32に挿入し、その後カバー部材62を基端方向にスライドさせることにより、カバー部材62がプロテクタ本体29に装着されるとともに、弾性部材64が側孔32内に組み込まれる。【選択図】図7