| 摘要 |
PROBLEM TO BE SOLVED: To provide a chemical injecting apparatus which reduces the fear caused by a sticking needle tube and enables injection of a fixed amount of chemical through a simple operation. SOLUTION: This chemical injecting apparatus 1 has a casing 2 consisting of upper and lower cases 21, 22, the upper case 21 having a surface 211 of contact with the living body and an opening 212 formed therein. A container 3 retaining a chemical, a tube 4 connected to the container 3, a bellows pipe 5, a connector 6, a needle tube changing unit 7 having a plurality of needle tubes which can be freely attached to and removed from the connector 6, and a tube pressure closing means 9 which presses and closes the tube 4 by means of a roller 93 and a bottom panel 91, are stored inside the casing 2. When the connector 6 is connected to the needle tube enclosed in a predetermined cylinder 72 and the tube 4 is longitudinally pressed and closed by the tube pressure closing means 9 with the needle end projected from the opening 212, the chemical in the tube 4 is discharged via the bellows pipe 5, the connector 6, and the needle tube. |
