Auto-injection device with needle protecting cap having outer and inner sleeves

Self-injection device with needle cap that has both outer and inner gloves. The present invention relates to an injection device (110) having a housing (112) receiving a syringe (114) having a sealed cap (123) covering its needle (118). A releasable locking mechanism retains the syringe (114) in its retracted position. A sleeve 119 protrudes from the outlet aperture 128 and may be depressed to release the latch mechanism. A removable threaded cap 111 closes the housing 112, covers the outlet aperture 128 and the sleeve 119, thereby preventing the latch mechanism from being released, and couples the cover 123 of the syringe 114 ). When the cap 111 is removed, it carries the cap 123 therewith no longer closes the outlet aperture 128 and no longer prevents the locking mechanism from being released. So,