PROBLEM TO BE SOLVED: To accurately eliminate a liquid drug accumulation in an affected part in a shorter time by using a liquid drug permeation device and a liquid drug permeation system which are used for treatment of penetrating a affected part with a liquid drug. A liquid drug permeation system 100 for permeating a liquid drug under an endoscope 10 is for assisting the liquid drug permeation device 20 and position adjustment of the liquid drug permeation device 20 under the endoscope 10. And an auxiliary device 30. When the connector portion 32 of the auxiliary device 30 is attached to the endoscope 10 and the inner tube 21 is fixed to the auxiliary device 30 by the fixture 33, the outer tube 22 of the liquid drug permeation device 20 is fixed to the inner tube 21. The outer tube 22 can be moved forward and backward with respect to the inner tube 21, and the water absorbing material 23 attached to the tip of the inner tube 21 can be drawn into the outer tube 22. [Selection diagram] Figure 1A【課題】患部に液状薬剤を浸透させる治療に用いる液状薬剤浸透装置及び液状薬剤浸透システムを用いて、患部における液状薬剤の液溜まりをより短時間で正確に解消すること。【解決手段】内視鏡１０下で液状薬剤を浸透させるための液状薬剤浸透システム１００は、液状薬剤浸透装置２０と、内視鏡１０下で液状薬剤浸透装置２０の位置調整を補助するための補助装置３０とを備える。補助装置３０のコネクタ部３２を内視鏡１０に装着すると共に固定具３３により内管２１を補助装置３０に対して固定した場合に、液状薬剤浸透装置２０の外管２２が内管２１に対して進退自在であり、内管２１に対して外管２２を前進させることで内管２１の先端に装着された吸水材２３を外管２２内に引き入れ可能である。【選択図】図１Ａ
