To provide an auxiliary use device which can be easily used by wearing a puncture device for blood collection which is small and inconvenient to handle.SOLUTION: The distal end side of the blood sampling puncturing device 101 is fitted in the receiving hole 21 of the main body 2, the needle cap 109 is inserted into the dividing groove 31a and rotated to extract the housing 103. The pressing portion 32 is pushed in and the needle cap 109 is pushed out to the release hole 31 b by the intervention plate portion 24 d and discharged. When the proximal end side of the puncture device 101 from which the needle cap 109 is extracted is fitted to the slide case 4 and the blood collecting part such as a fingertip is pressed against the distal side and pushed together with the slide case 4, the operation piece 108 is inserted into the receiving hole 22 Pushed inward in the radial direction by the inner periphery, the locking member 107 releases the lancet 104, the puncture needle 105 protrudes from the housing 103 and sticks into the blood sampling part.(FIG.【課題】小さくて取り扱いに不便な採血用穿刺装置を装着して、容易に使用することができるで使用補助装置を提供する。【解決手段】本体2の受け入れ穴21に採血用穿刺装置101の先端側を嵌合させ、針キャップ109を割溝31aに差し込み、回転させてハウジング103を抜き取る。押圧部32を押し込み、介入板部24dで針キャップ109を解放穴31bへ押し出し排出する。針キャップ109を抜き取った穿刺装置101の基端側をスライドケース4に嵌合し、先端側に指先等の採血部を押し当てて、スライドケース4と共に押し込むと、操作片108が受け入れ穴22の内周により半径方向内側へ押し込まれ、係止部材107がランセット104を解放して、穿刺針105がハウジング103からの突出し、採血部に刺さる。【選択図】図7
