NEEDLELESS INJECTION DEVICE COMPRISING MEANS FOR REGULATING THE GAS PRESSURE LEVEL IN THE COMBUSTION CHAMBER

摘要

The invention relates to a needleless injection device (1) comprising a body (2) which supports and/or defines a plurality of elements that form a circuit of elements. The aforementioned circuit comprises, from upstream towards downstream, an initiation device which is associated with a pyrotechnic gas generator, a receptacle (5) housing a liquid active agent that is to be injected, and an active agent injection system. According to the invention, the pyrotechnic gas generator comprises a pyrotechnic charge (62) which is placed in a combustion chamber (4). The inventive device is characterised in that it comprises at least one device for regulating the gas pressure level in the combustion chamber (4).