AUTO-INJECTOR Russian patent published in 2017 - IPC A61M5/20 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely to automatic injectors for liquid drug dosing. Injector comprises: elongated case, configured to be held by user; tubular housing, telescopically extendable in case and pressed to case so that it protrudes from case; syringe with hollow injection needle, drive spring and piston for load transfer from drive spring to syringe plug-piston; shutter button, placed distal in or on case. Wherein shutter-button is initially connected to case so, that it extends distally from case, and is coupled with housing so, that it blocks shutter-button from disengagement with case and thus preventing actuation of shutter-button in initial state, wherein case is made with possibility of translational movement in proximal direction relative to housing opposite to pressing force, with translational movement, thus shutter-button, separating engagement with housing to provide possibility of actuating shutter-button, wherein shutter-button is configured to interlock in more proximal position after actuation.

EFFECT: administering of liquid medicament dose.

25 cl, 27 dwg