This creation is a kind of auxiliary device that body fluid is aspirated with syringe, the espespecially connected structure designer of syringe and body fluid suction auxiliary device, its characteristic is equipped with interlocking lever and pushing piece in what body fluid suction auxiliary device, and the body interior leads screw rod and a power supply device equipped with a direction controlling group, a driving device, one. Interlocking lever is worn what and leads in screw rod by body fluid suction auxiliary device system, using in interlocking lever thread with lead screw rod ins conjunction with, be driven motor through control panel starting, interlocking lever made to carry out the movement being displaced. The body fluid aspirates auxiliary device and is equipped with a fixing piece, through the fixing piece, body fluid can be aspirated on the fixed what syringe of auxiliary device, and pushing piece is put below what cylinder piston bar push-pull piece, make syringe body fluid suction auxiliary device can be more stable and smoothly push and pull piston rod, reaches pain sense of discomfort when reducing syringe suction patient body fluid.本創作為一種用針筒抽吸體液之輔助裝置，尤指針筒與體液抽吸輔助裝置之接合結構設計者，其特徵在於該體液抽吸輔助裝置設有連動桿及推送件，而該本體內部設有一方向控制組、一驅動裝置、一導動螺桿及一電源裝置。該體液抽吸輔助裝置係將連動桿穿設於導動螺桿內，利用連動桿內之螺牙與導動螺桿結合，透過控制面板啟動傳動馬達，使連動桿進行位移之動作。該體液抽吸輔助裝置設有一固定件，透過該固定件，可將體液抽吸輔助裝置固定於針筒上，並將推送件置放於針筒活塞桿推拉片下方，使該針筒體液抽吸輔助裝置可更穩定且平順推拉活塞桿，達到降低針筒抽吸患者體液時之疼痛不適感。
