Syringe without needle, operating by the tube has an impact, with maintenance prior on the dimension of the active substance

摘要

The syringe (1) consists of an initiator, a pyrotechnic gas generator (2) with a charge (5), an expansion chamber (3) and an ejection tube (4). The syringe (1) consists of an initiator, a pyrotechnic gas generator (2) with a charge (5), an expansion chamber (3) and an ejection tube (4). The solid particles of medication are held outside the tube (4) in a fixed cavity (18) and are forced into it by the movement of a piston (13) and the gases from the pyrotechnic charge fed through tubes (17a, 17b), and imparted with the velocity for their ejection by the shock wave inside the tube.