PROBLEM TO BE SOLVED: To prevent a puncture part of a puncture needle from carelessly protruding from a protector.SOLUTION: When a puncture needle 10 of a puncture device 1 is inserted into a sheath 11, a protector 13 to be mounted on the puncture needle covering a puncture part 31 of the puncture needle 10 is retained in a retention part 58 of a handle 12 however, when the puncture needle is extracted, moves on along the puncture needle covering the puncture part. The protector 13 includes a lid part 41 provided transferable between a closed state for closing the tip side of the puncture part and an open state. The handle 12 includes operation parts 61 and 62 that transfer the lid part of the protector from the closed state to the open state.COPYRIGHT: (C)2014,JPO&INPIT【課題】穿刺針の穿刺部がプロテクタから不用意に突出することを防止する。【解決手段】穿刺装置1の穿刺針10の穿刺部31に被さって穿刺針に装着されるプロテクタ13は、穿刺針がシース11に挿入される際にはハンドル12の留置部58内に留め置かれ、穿刺針が抜去される際には、穿刺部に被さって穿刺針に随伴する。プロテクタ13は、穿刺部の先側を塞ぐ閉塞状態と開放状態との間で遷移可能に設けられた蓋部41を含み、ハンドル12は、留置部に収容されたプロテクタの蓋部を閉塞状態から開放状態に遷移させる作用部61,62を有している。【選択図】図11