摘要 |
A needle-less injection system that uses an ampule with an elongated hollow body. The elongated hollow body including a nozzle and an aperture for accepting a plunger, the aperture for accepting a plunger extends from the second end towards the first end and is in fluid communication with the nozzle. The ampule cooperates with a generally cylindrical plunger. The plunger includes a first end and a second end, and a concave rib. The concave rib is extends about the perimeter of the plunger and extends towards the first end of the plunger.
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