END INJECTION INDICATOR FOR INJECTION PEN Russian patent published in 2017 - IPC A61M5/20 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely to an assembly of a medication injection pen. Assembly comprises a housing with proximal and distal ends; dose set knob extending from the proximal end and rotatably connected to the housing for setting a dose; set of numbers corresponding to the specified dose, and an indicator member distally located in relation to the set of numbers and movable between an visible position, indicating a zero position of the dose set knob and a non-visible position indicating a non-zero position of the dose set knob, dose set knob is in the zero position when a set dose has been completely administered.

EFFECT: using the invention enables to indicate completely administered dose.

20 cl, 31 dwg