The present invention provides a syringe. The infusion liquid in the syringe passes through the needle, the through hole and the suction path, and flows into the barrel. For medical injection, the infusion liquid needs to be discharged, so the plunger will move linearly and press the piston moving along the spiral groove at the same time, the filtering block will rotate, and the infusion liquid will be injected through the discharge path, the filter and the through hole.本發明提供一種注射器,該注射器的注射液通過注射針頭、通孔及吸入路徑向針筒流入,為注射藥液需排出注射液時,使得所述針托直線移動,加壓筋沿著螺旋槽移動的同時,過濾塊進行旋轉,通過排出路徑和過濾器及通孔注射藥液。100‧‧‧注射器110‧‧‧針筒120‧‧‧活塞210‧‧‧針托220‧‧‧針頭270‧‧‧連接蓋
