| 摘要 |
PROBLEM TO BE SOLVED: To provide a new syringe type two-medicines mixing ejection device capable of mixing two medicines by easy operation and ejecting the mixed contents by a series of operation.SOLUTION: A syringe type two-medicines mixing ejection device 10 includes a first piston 30 and a plunger P disposed inside a syringe 20 to form two filling spaces R1, R2. The inner peripheral surface of the forward end side syringe is provided with a recessed part 25 for forming a by-path 60 in a space up to the piston 30. The plunger P includes a holding member 41 and an operating member 50, and the holding member 41 has a shaft 44 and a plurality of arms 45. The free ends 45b of the arms 45 are each provided with a pressure receiving surface 48a for restraining the movement by pushing in the operating member 50. The arms 45 are each provided with an elastic tongue piece 46 entering from an opening A2 of the syringe rear end to cause bending deformation and a locking projection 47 locked on a syringe rear end 20e. The operating member 50 is assembled to be slidable through the shaft 44, and the restraint on the arms 45 and locking of the locking projection 47 are released by releasing push-in of the operating member. |
