| 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 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 ).
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