A subassembly of a medicament delivery device

Abstract

The present disclosure provides a subassembly of a medicament delivery device configured to expel medicament from a medicament container, the subassembly comprising a housing having a proximal end and a distal end; a tubular plunger rod operatively arranged to, upon activation, act on the medicament container, the tubular plunger rod assumes a pre-tensioned state by a drive spring; an actuator housing comprising at least one holding member arranged to lock the plunger rod in the pre-tensioned state; and a plunger holder having a blocking surface, the plunger holder being operatively configured to move distally from a blocking position in which the at least one holding member abuts against the blocking surface to prevent the at least one holding member from releasing the plunger rod from its pre-tensioned state, to a non-blocking position in which the blocking surface is distant from the position restricting movement of the holding member; wherein the drive spring is at least partly housed in the tubular plunger rod and is operatively connected to the distal end of the housing.

Dependencies are inferred from the claim text.