AUTOINJECTOR WITH A NEEDLE CASING Russian patent published in 2022 - IPC A61M5/315 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely, to liquid medicine delivery apparatus. Apparatus includes a body, a syringe assembly containing a cylinder, a stopper and a cannula, wherein at least a section of the syringe assembly is located inside the body; a drive assembly 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; a lever trigger element movable between the locking position wherein the drive assembly cannot be triggered, and a free position wherein the drive assembly can be triggered; and a needle casing with a before-use position wherein the cannula is located inside the needle casing, the triggering position wherein the needle casing ensures that the drive assembly is triggered, and an after-use position wherein the cannula is located inside the needle casing. The needle casing is configured to engage with the lever trigger element and move the lever trigger element to the free position when the needle casing is in the triggering position.

EFFECT: ensured delivery of liquid medicine.

14 cl, 47 dwg