| abstract |
The present invention is a long tubular case 12; A tubular carrier (7) slidably arranged inside the case (12), the carrier (7), the drive spring (8) and the drive spring (8) adapted to contain a syringe (3) with a hollow injection needle (4). A carrier subassembly comprising a plunger 9 which delivers a load of to the stopper 6 of the syringe 3, wherein the syringe 3 is lockable for coaxial axial potential with the carrier 7, The drive spring 8 is an autoinjector 1 for administering a batch of liquid drug M, comprising a carrier subassembly, which functions between the carrier 7 and the plunger 9, wherein the initial state of the The plunger 9 is locked to the carrier 7 by being prevented from rotating from this inclined engagement by oblique engagement with the carrier 7 and according to the relative longitudinal position of the carrier 7 in the case 12. At this time, the plunger 9 is beyond the proximal end of the autoinjector 1. When displacing the carrier 7 in the proximal direction P to advance the needle 4, it is arranged to be released for rotation from the oblique engagement when the needle 4 reaches at least a predetermined scanning depth. , An automatic syringe 1. |