Needleless injection device comprising means for regulating the gas pressure level in the combustion chamber
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United States of America Patent
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Nov 25, 2008
Grant Date -
Apr 27, 2006
app pub date -
Mar 18, 2004
filing date -
Mar 21, 2003
priority date (Note) -
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Abstract
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).
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