Medicine dispensing device

A medicine dispensing device comprises an outer sleeve and a push rod which is arranged in the outer sleeve and provided with a piston. The front end of the outer sleeve is connected with a medicine feeding part and a medicine discharging part; wherein the medicine feeding part comprises a medicine feeding pipe, the front end of the medicine feeding pipe is connected with a liquid feeding needle, a liquid medicine filter and a medicine feeding one-way valve are installed on the medicine feeding pipe, the medicine discharging part comprises a medicine discharging pipe, the front end of the medicine discharging pipe is connected with a liquid discharging needle, and a medicine discharging one-way valve is installed on the medicine discharging pipe. The medicine dispensing mechanism is reasonable in design, good in medicine dispensing effect and convenient to use. 一种配药器，包括外套和设置在外套内的带活塞的推杆；在外套的前端连接设有进药部件和出药部件，所述的进药部件包括进药管，在进药管的前端连接有进液针，在进药管上安装有药液过滤器和进药单向阀，所述的出药部件包括出药管，在出药管的前端连接有出液针，在出药管上安装有出药单向阀。本实用新型的机构设计合理，配药效果