| 摘要 |
The invention relates to a needleless syringe ( 1 ), comprising the following' successively: a gas generator, a gas expansion chamber ( 3 ), a means for retaining particles of the active agent and a tube ( 6 ) for ejecting said particles. The main characteristic of the inventive syringe is that the gas generator is a pyrotechnic generator ( 2 ), comprising a pyrotechnic charge ( 10 ) which generates gas, a gas generator and an initiation device. The invention is also characterized in that the retaining means comprise at least one lid ( 8 ), which is fixed to the ejection tube and is configured to break under the influence of the gases generated by the combustion of said charge ( 10 ). |
