The present invention provides a liquid pharmaceutical automatic injector for administering a dose of (M) (1): - hollow needle (4), and seal the syringe (3), and drug elongate housing arranged to contain a syringe (3) with a stopper (6) for the administration of (M) (2) is , the distal end (D), and a proximal end provided with an orifice having the intention to be applied to the injection site has a (P), wherein the syringe (3) is, relative to the housing (2) is slidably disposed, the housing (2) - at the time of start-up: - from a position with the cover inside the housing (2), pressing the needle (4) through an orifice and through the proximal end (P) to an advanced position - in order to supply the dose of medicament (M), it operates the syringe (3) and - after delivery of the drug (M), the needle (4) to a position with a cover syringe (3) with a It is retracted Capable spring means (8) - manual operation prior to, to lock the spring means (8) in a pressurized state, the manual operation at the time, arranged activation means to spring means (8) can be released for injection (20 ) An automatic injector (1) comprising a. Spring means (8), the needle (4) to advance the, and the plunger distal end of the housing (2) for injecting a dose of (9) via an agent (M) (8.1) is a single drive spring arrangement compressed spring shape so as to base (8), and wherein the driving spring (8), in order to retract the syringe (3), its proximal end (8. are arranged so as to have its basis in the housing which is switched to 2) (2). Activation means (20) is arranged as a trigger button placed wrapped over sleeve button shape at the distal end (D) of the automatic injector (1) (20), the trigger button (20), automatic injector (1) at least most extends over the entire length of, wherein the trigger button (20), upon translational movement of the proximal direction (P), is arranged to release the drive spring (8). .FIELD 1本発明は、液体薬剤(M)の用量を投与するための自動注射器(1)であって:-中空針(4)、及びシリンジ(3)をシールし、そして薬剤
