Needle assisted jet injector

The invention claims a is used for of jet flow injection needle is one-third jet flow injector and method. The injector's by such, a needle capable of shrinking to the injector nozzle module. With a drive source, a part of needle and extends to the nozzle module, an application penetrates outer layer, and is integrally flow injection, and delivering medicament the depth section area. A head and supply working, a nozzle and a nozzle module. The other by such, the nozzle fixed on the nozzle module terminal. Of said two by examples, a needle pieces skin part of the length is less than 5 mm.