Electronic pull appurtenance of syringe

The utility model belongs to the field of medical apparatus, especially, electronic pull appurtenance of syringe. The utility model discloses electronic pull appurtenance of syringe, including casingand drive mechanism, drive mechanism includes the motor switch, is located casing inside motor, screw rod and gangbar, the motor switch is fixed in the surface of casing and is connected with the motor, the left end of screw rod is connected with the motor, the screw rod with fix the nut screwed connection in the gangbar, shells inner wall has the guide way that is the axial symmetry distributionalong casing length direction and about the transverse axis who passes the casing center, there is the steel ball between guide way and the gangbar, the steel ball can be followed interior left and right sides of the passageway that forms and rolled between the concave surface of guide way and gangbar outer wall. The utility model discloses an automatic, the steady injection of syringe, and easy operation, convenient are f