Injection device

摘要

An injection device includes a housing 101 to 104 containing a syringe 24. The contents of the syringe 24 are viewable through a window 14 in the mid-section 102 of the housing. The window 14 is concealed by a slideable shutter 12. The slideable shutter 12 is biased by a bias spring 22 which also biases an internal syringe carrier. Also disclosed is a reversible needle cap which operates initially to cap the front end of the housing and, upon removal thereof, pulls a needle sheath 30 off the syringe needle 26. The cap is designed to be reversible so that, after use, it can be reversed and reconnected to the housing to cover the exposed needle.

主权项

1. An injection device comprising:
a syringe or cartridge having a needle at a forward end; an elongate housing for receiving in use the syringe or cartridge, the elongate housing having a forward end and a rearward end, wherein the syringe or cartridge is mounted in use in the elongate housing, wherein the needle projects from the forward end of said elongate housing at least on completion of an injection process, and wherein the needle is initially protected by a longitudinally removable sheath; and a removable cap adapted to be fitted to the forward end of the elongate housing in both of
a pre-injection orientation anda post-injection orientation, said removable cap having a rearwardly extending element adapted to engage at its rearward end behind a base of the removable sheath, when said removable cap is in its pre-injection orientation, wherein upon removal of said removable cap from the forward end of said elongate housing, said sheath is removed from said needle, and wherein, in its post-injection orientation, said removable cap is re-fitted to the forward end of the elongate housing in a reverse orientation in which the rearwardly extending element of the cap extends forwardly of the housing to shroud said needle.