The automatic injector which has the core pulling out prevention needle

摘要

In order automatic injector 100, to build in the dosage quantity of the medicine, the seal anti- structure 118 which is arranged the cartridge 104 which you can do, facing toward the front end of this cartridge, being arranged usually entirely in the rear end of the cartridge, responding to drive procedure and entirely passing by the cartridge facing toward that front end it has portable possible plunger 126. The portable possible plunger inside the cartridge shuts in the medicine with the rear. Usually communicating with the medicine container, the needle 130 which is arranged, responding to the drive procedure which thrusts the needle into internal of the person, it becomes the passage which discharges the medicine to internal of the person. The front end of the needle penetrating the seal body in order to remove the core pulling out, when moving, the cartridge, in order to decelerate the movement of the plunger, has the frictional increase territory 215.