Electric injection device

The utility model relates to an electric injection device, the upper end of shell is provided with the fixed slot, installs the syringe in the fixed slot, and the syringe needle setting of syringe is in the outside of shell, horizontal installation has a push -and -pull rod in the vertical spout that is provided with on the lateral wall of shell, spout, and expanding spring is installed to the left end of push -and -pull rod, and the right -hand member of push -and -pull rod corresponds the installation with the piston rod of syringe, expanding spring's left side install with expanding spring assorted lead screw, driving motor is installed to the front end of lead screw, driving motor's signal input part is connected with power module through slide switch, power module installs on the shell. With the rotation of drive motor drive lead screw, realize that the push -and -pull rod is to syringe piston pole push -and -pull campaign to replace the manpower to inject and extract, avoided leading to the fact the inj