Appareil pour l'inoculation transdermique de médicaments sans aiguille

摘要

Apparatus for needleless transdermal inoculation of medicaments, having a spring driven plunger (150) and an arming mechanism comprising a pneumatically moved piston (116, 119) and a ball lock mechanism (117, 118) which automatically releases the plunger such that it can move under the bias of the spring when the firing spring (153) has been fully cocked.