| 摘要 |
PROBLEM TO BE SOLVED: To provide a needleless syringe which facilitates the filling of a substance to be injected such as an injection solution, is less likely to cause leakage of the substance to be injected in the preparation of the injection, and easily discharges air left in a filling chamber after the filling.SOLUTION: A needleless syringe for injecting a substance to be injected in a region to be injected by emitting the substance to be injected without mediation of an injection needle includes: a filling part having a filling hole where an outside supply device is connected, a filling chamber which can house the substance to be injected supplied through the filling hole, a plunger which is slidable in the filling chamber, and a nozzle part for emitting the substance to be injected from an emitting hole; and a driving part for imparting emission energy to the plunger. A plug body is inserted in the filling hole through which the substance to be injected is supplied from the outside supply device to the filling chamber through the filling hole in a manner to press the substance to be injected that is present in the filling hole. |
