Needleless syringe comprising an optimized injector-receptacle

摘要

The invention relates to the realm of needleless syringes used for injecting liquid active substances. Said syringe comprises a reservoir that is enclosed by means of displaceable plugs which trap the liquid. The reservoir is initially isolated from an injector-receptacle ( 37 ) which is provided with at least two peripheral injection conduits ( 38 ) that are arranged outside the receptacle ( 37 ). Said receptacle ( 37 ) encompasses a pocket bore ( 31 ) which accommodates the plug located downstream such that the optimized inlets ( 39 ) of the conduits are unobstructed. The face of the receptacle ( 37 ), which is located upstream, comprises a multilobed sealing joint ( 34 ) which is disposed parallel to and as close as possible to the edges of the bore ( 31 ) and the inlets ( 39 ). The aim of the invention is to create an injector-receptacle ( 37 ) that is optimized regarding discharging and the resistance thereof to the injection pressure.