| 摘要 |
PROBLEM TO BE SOLVED: To provide a quantitative syringe type ejector which subdivides contents to take them out.SOLUTION: A nasal drag sprayer 1 includes a syringe 2 having a flange part 2d and a plunger 3 capable of being pushed into the syringe 2. The plunger 3 has a first shaft 3a having a piston 4 at a tip, and a second shaft 3b. In the first shaft 3a, a plurality of elastic pieces 3a1 extending towards backward, a sliding projection 3a2 slidable on the inner peripheral surface 2f of the syringe, and a locking projection 3a3 to be locked to a syringe back end 2e are integratedly arranged. The second shaft 3b has an end surface 3f1 pressing the free end of the elastic piece 3a1, and constrains the free end 3e2 of the elastic piece 3a1 between the second shaft and the syringe 2 by pressing it from the end surface 3f1, so that deflection deformation starting from the sliding projection 3a2 is made to generate on the elastic piece 3a1 and locking of the locking projection 3a3 is removed by restoring force starting from the sliding projection 3a2 of the deflection deformation. |
