AUTOINJECTOR WITH ACOUSTIC INDICATOR Russian patent published in 2022 - IPC A61M5/20 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely, to liquid medicine delivery apparatus. Apparatus includes a body; a syringe assembly including a cylinder, a stopper and a cannula, wherein at least a section of the syringe assembly is located in the body; and a drive assembly including a plunger part configured to move the stopper inside the cylinder when the drive assembly is triggered; wherein at least a section of the drive assembly is located inside the body. The plunger part has a before-use position before moving the plunger part; an injection position wherein the plunger part moves the stopper inside the cylinder; and an after-use position wherein the plunger part has stopped moving. The apparatus also includes an acoustic indicator element configured to provide sound indication of the transition of the plunger part from the injection position to the after-use position.

EFFECT: ensured medicine delivery by means of the apparatus.

13 cl, 44 dwg