Patent ID: 6981961

Claim:
A needleless syringe for injecting an active principle, comprising: an injector including at least one injection nozzle, said injector being placed a distal end of the needleless syringe; and a wall that can be displaced under the effect of a propulsive system pressurizing and expelling the active principle through the injector, wherein: the active principle is initially placed between the injector and the wall, and the injector includes an assembly of at least two elements; each of said elements having a downstream face, an upstream face and a lateral surface joining said elements together, the lateral surfaces of said elements in the assembly being at least partly in contact with each other to define contacting surfaces; at least one of the lateral surfaces having at least one groove which constitutes the injection nozzle in the assembly of said elements; and the injection nozzle being located between the lateral surfaces.