To provide a liquid chemical injection device capable of improving the efficiency of liquid chemical injection work.
A virtual cylinder K includes the outer edge of a piercable part 13b. A trimming ring 28 is arranged so as to surround the virtual cylinder K and the trimming ring 28 is formed of titan. At the time of injecting a liquid chemical into a liquid accumulation space S in a hypodermically planted liquid chemical injection device 11, X-rays are emitted (irradiated) to a part where the liquid chemical injection device 11 is hypodermically planted. Then, since it is hard for the trimming ring 28 to transmit the X-rays compared to a piercing member 13 and a housing main body 12, the trimming ring 28 is identified. At the time of using an MRI device, the piercing member 13 and the housing main body 12 and the trimming ring 28 are displayed so as to be clearly distinguished.
YAMAKADO KYOICHIRO
HIRAMATSU YOSHINORI
YAMAGUCHI KEIJI
Makoto Onda