AUTOMATIC INJECTOR WITH ANTI-CORING NEEDLE

摘要

The automatic injector (100) comprises a cartridge (104) adapted to contain a charge of medicament, a seal structure (118) disposed toward a forward end o f the cartridge, a plunger (126) normally disposed in a generally rearward end of the cartridge and movable through the cartridge toward a generally forwar d end thereof in response to an actuating procedure. The movable plunger rearwardly confines the medicament within the cartridge. A needle (130) normally disposed in communication with the medicament container provides a passage in which the medicament is released into an individual's flesh in response to an actuating procedure projecting the needle into the flesh of t he individual. The cartridge having an increased friction region (215) so as to slow the motion of the plunger when the forward end of the needle travels through the seal in order to eliminate coring.