| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixture ejecting device which can agitate and sufficiently mix a plurality of liquid medicines or the like in a syringe only by operation of a plunger and can respond to variety in types, a mixing ratio or the like of the liquid medicines or the like.SOLUTION: A mixture ejecting device includes: a cylindrical syringe; a plunger rod; and a cap. A constitution in which the plunger rod comprises: a large diameter plunger rod slidably inserted into the syringe; a small diameter plunger which moves slidably and vertically in the large diameter plunger rod; an attachment body attached to the large diameter plunger rod; and a spring member resiliently provided between the small diameter plunger and the attachment body, the large diameter plunger rod is provided with a front end wall having a communicating hole penetrated in the center and an external flange, the small diameter plunger is provided with a piston wall slidably inserted in an internal periphery of a circumferential wall of the large diameter plunger rod, and the attachment body is provided with an internal flange engaging the external flange is adopted. |
