The present invention relates to a medicament delivery device comprising a medicament container (52) having an attached medicament delivery member (54)； a housing adapted to receive the medicament container (52), the medicament container (52) being movable between a retracted position in which the medicament delivery member (54) is contained within the housing and an extended position in which the medicament delivery member (54) extends from the housing； a drive unit (78) that acts upon the medicament container (52) to advance it from its retracted positon to its extended position and expels its contents through the medicament delivery member (54)； and a medicament container holder (50) for carrying the medicament container (52) as it is advanced, the medicament container holder (50) having a proximal end through which the medicament delivery member (54) extends and a distal end opposite the proximal end； and a holding member (80) releasably connected to the drive unit and attached to the medicament container holder. The invention is characterized in that the holding member (80) comprises, at its proximal end a biasing element (90) arranged to bias the medicament container (52) in the proximal direction in the medicament container holder (50) and wherein the biasing element (90) comprises a resilient structure in the form of a tubular wall (82) provided with slots (92) extending in the generally circumferential direction.La présente invention concerne un dispositif d'administration de médicament comprenant un récipient de médicament (52) auquel est fixé un élément d'administration de médicament (54) ； un boîtier conçu pour recevoir le récipient de médicament (52), le récipient de médicament (52) étant mobile entre une position rétractée dans laquelle l'élément d'administration de médicament (54) est contenu à l'intérieur du boîtier et une position déployée dans laquelle l'élément d'administration de médicament (54) s'étend à partir du boîtier ； une unité d'entraînem
