SINGLE-USE DEVICE FOR INJECTING A MEDICAMENT FLUID

摘要

The invention relates to a single-use injection device comprising a syringe body (1) and a protective case (14) provided with blocking parts which are relative in translation (7, 16, 17) comprising radial stop surfaces which are adapted in such a way as to arrest the protective case (14) irreversibly in an advanced protection position after the injection needle (6) is used. According to the invention, the injection device comprises a needle-protection cap (8) which is longitudinally comprises of a front section (21) and a rear section (19) which are connected by means of a truncated intermediate section (20) which widens out in the direction of the rear section and which is adapted in order to enable the rear section (19) to protrude into the extension of the rear stop surface (7b) of a stop part (7) which is fitted on the syringe body in order to mask the latter and to enable the protective case (14) to slide towards a retracted injection position during the assembly of the injection device.