| 摘要 |
PROBLEM TO BE SOLVED: To provide a device that prevents a fluid drug from being discharged in an uncontrolled state and allows a metered administration of the fluid drug from a fluid container. SOLUTION: The device has container 1 where when a fluid drug is administered by advancing a piston 2, the liquid drug that passes through an outlet 4 and is metered, moves, and a catether 8 that is connected to the outlet 4 of the container 1, and the front end facing the direction away from the outlet 4 is connected to an injection needle 7. A valve 30 is arranged in the cross section of the flow of the liquid drug between the outlet 4 and the needle 9. In older to prevent self-discharge, only when liquid pressure in the direction exceeds the pressure of the valve produced by the dead load of a liquid column of the device, the valve 30 can flows the liquid to the front end of the catether 8. |
