Patent ID: 8956331
Filing Date: 2015-02-17
Classification: A61M

Abstract:
1. An auto injector comprising: a housing, a syringe with a needle, the syringe being movably positioned in the housing between a first position in which position the needle is accommodated inside the housing and a second position in which position the needle protrudes outside the housing, a driver positioned laterally in relation to the syringe and configured for applying a force to the syringe thereby moving the syringe from the first position to the second position, a first injection lock configured in a locked state for preventing syringe movement from the first position to the second position and an injection trigger member configured for releasing the first injection lock to an unlocked state by user operation of the injection trigger member in which unlocked state the first injection lock does not prevent the driver from moving the syringe from the first position to the second position, characterized in that the first injection lock comprises a rotatable release shaft configured to rotate between a first angular position in which position the shaft prevents movement of the syringe from the first position to the second position and a second angular position in which position the shaft does not prevent movement of the syringe from the first position to the second position, the auto injector further comprising a movable member configured with a first ring positioned in such a way that the release shaft extends through the first ring, and wherein the release shaft has first tongues protruding from the release shaft and extending in parallel with the longitudinal axis of the release shaft with end edges abutting the first ring in one angular position of the release shaft thereby preventing the first ring from moving in the direction of the first tongues.