The chemical grouting equipment has, outside needle 310 and the inside needle 320 and tubular component 330 and cover component 340 and. Outside needle 310 is and, being soft, the front part is detained at least inside the blood vessel. As for the inside needle 320, the front part is hard at least, it is arranged inside outside needle 310 and the stab is done in the blood vessel. As the rear end of outside needle 310 is connected to front end opening as one unit, the rear section of the inside needle 320 has extended tubular component 330, from rear end opening. Cover component 340, in order in extension state to become the length which can accommodate the whole of the inside needle 320, has had expansion and contraction possible bellows structure, the rear end of the inside needle 320 is locked by the rear end, at the same time the front end separation possibly is installed in rear end opening of tubular component 330.薬液注入用具は、外針310と、内針320と、管状部材330と、カバー部材340と、を有する。外針310は、柔軟でであり少なくとも前部が血管内に留置される。内針320は、少なくとも前部が硬質であり、外針310内に配置されて血管に穿刺される。管状部材330は、外針310の後端部が前端開口に一体に連結されているとともに後端開口から内針320の後部が突出している。カバー部材340は、伸張状態では内針320の全体を収容できる長さとなるように伸縮可能な蛇腹構造を有しており、後端部に内針320の後端部が固定され、かつ前端部が管状部材330の後端開口に分離可能に装着されている。
