| 摘要 |
PROBLEM TO BE SOLVED: To provide a drug solution injector which is easily operable and can dose a small volume of other drug solution midway drug solution dosing. SOLUTION: The inlet 13 and the outlet 14 are equipped on both sides mutually opposite with respect to the longitudinal axis on the cylindrical body 1 and a drug solution chamber 4 is equipped in between two gaskets 2, 3. The first gasket 2 has a drug solution passage 22 in between seal parts 21, 23. The drug solution passage 22 is movable from the first position to pass the drug solution through the inlet 13 and the outlet 14 to the tip end 11. On the base end of the first gasket 2 and the tip end of the second gasket 3 respectively facing the drug solution chamber 4, cylindrical projection parts 24, 32 with outer diameters smaller than the inner diameter of the cylindrical body 1 are respectively equipped. The inlet 13 for drug solution is opened to the lumen of the cylindrical body 1 to the tip end side than the outlet 14 so that the inlet 13 and the outlet 14 for drug solution communicate via the cylindrical projections 24, 32 when the first gasket 2 is moved to the tip end. |
