INJECTION DEVICE WITH A SPRING FOR A NEEDLE PROTECTING SLEEVE

摘要

An injection device including a housing, a needle guard sleeve displaceable relative to the housing, and a spring coupled to the guard sleeve such that the guard sleeve can be moved by the spring distally from a proximal position to an end position, the spring also being coupled to a forward drive element displaceable relative to the housing in a drive direction wherein the spring is tensioned upon a movement of the forward drive element in the forward drive direction.

主权项

1. An injection device comprising:
a) a housing enclosing a product container b) an activating element shiftable relative to the housing from an initial position in which the activating element protects the injection needle to a proximal position to permit manual injection of the injection needle; (c) an advancing member shiftable relative to the housing in an advancing direction, said advancing member comprising a piston rod with a delivery spring, said piston rod acting on a piston to shift it relative to the product container; d) a restoring spring for shifting the activating element distally from the proximal position to an end position; and e) a triggering element that releases a blocking connection preventing the piston rod from moving in the advancing direction, such that a delivery movement can be performed.