AUTOINJECTOR Russian patent published in 2017 - IPC A61M5/20 A61M5/28 A61M5/32 

FIELD: medicine.

SUBSTANCE: injection device for medicament dose administering comprises a carrier, a drive spring, a plunger and a noise generating component. The carrier is adapted to receive a syringe containing a hollow injection needle and a plug. The plunger is configured to transmit the drive spring load to the plug. The noise generating component is configured to generate audible and/or tactile feedback upon collision with injection device components when the plug is located at the proximal end of the syringe. At that, in the first state, the elastic foot on the plunger is maintained in engagement with the noise generating component by means of the carrier. Moreover, in the second state, the foot releases the noise generating component from engagement and deviates at least partially into the hole in the carrier.

EFFECT: improved autoinjector.

6 cl, 28 dwg