This creation is to expose a safe vein indwelling needle,Including syringeNeedle seatSpringLimit seatSoft pins for cards and tubes,The spring is connected to the thimble cylinder and the needle seat,The limit seat is located at the front end of the needle cylinder,The release part is inserted in the limit seat,And the needle seat is limited to the state of extending the hard needle at the front end of the needle seat,When the release part is pressed to release the limit of the needle seat,The needle seat is pushed into the needle cylinder due to the return force of the spring,And the hard needle at the front end of the needle seat is automatically recycled and stored in the needle cylinder,In this way, medical staff can not be injured due to careless operation,The safety of medical appliances is increased,And,The safe vein indwelling needle can be recycled as long as the cartridge is pressed,The utility model has the advantages of convenient and fast operation.本創作係揭露一種安全靜脈留置針，包含針筒、針頭座、彈簧、限位座、卡釋件及導管軟針，彈簧係抵頂針筒及針頭座，限位座係位於針筒的前端，卡釋件係插置於限位座中，並將針頭座限位在使針頭座前端的硬針針頭伸出的狀態，當卡釋件被按壓而解除針頭座之限位時，針頭座因彈簧的回復力而被推入針筒中，而使針頭座前端的硬針針頭被自動回收容置於針筒內，藉此避免醫護人員因操作不慎而被扎傷，而增近了醫療用具使用的安全性，並且，安全靜脈留置針回收該針筒作只要按壓該卡釋件即可，具有操作方便而快速等優點。
