Gas syringe assisted injection device

The utility model provides a gas syringe assisted injection device, belongs to test analytique instrument technical field. The beneficial effects are that, simple structure, easily manufacturing, simple to operate, cost are lower, have not only improved the sampling precision of syringe, make moreover and annotate an appearance safe and reliable for it is very light that very difficult notes appearance becomes. Characterized by: physically have a through-hole of adorning the syringe in the cross-section center at nylon hexagonal assisted injection, an one of which side design has an opening that link up from top to bottom, and the opening passes through three departments of the quartering of corresponding side distance are arrived at the center of through-hole, there is the silk hole of taking the counter bore at two adjacent side middle parts at the opening in the opening limit partially, with the fourth department of opening vertically edges and corners line has one to lead to the screw, the spiral shell has the locating lever of taking the screw thread in the screw, and locating lever the higher authorities have welded the locating plate.