The present invention relates to a medicament delivery device comprising: a housing (12, 16) having a distal and an proximal end, said housing being adapted to receive a medicament container (18) with a delivery member (20) or with a connectable delivery member for delivery of a medicament a drive mechanismarranged to act on a plunger rod (56), which plunger rod (56) in turn is arranged to act on the medicament container (18) for providing automatic delivery of the medicament ahold-release mechanisminteractively connected to the drive mechanismfor releasing the drive mechanismfrom a biased position. The invention is characterized in a delayable signal generating mechanism (92) for generating an audible and/or tactile and/or visual signal indicating that the medicament has been completely delivered, which delayable signal generating mechanism (92) is operably connected between said pre-tensioned drive mechanismand said plunger rod (56).本發明有關藥物輸送裝置,包含:外殼(12、16),具有遠側及近側端,該外殼被設計成適於承納具有輸送構件(20)或具有可連接的輸送構件之藥物容器(18),用於藥物之輸送;驅動機構,被配置成作用於柱塞桿(56)上,該柱塞桿(56)依序被配置成作用在該藥物容器(18)上,用於提供該藥物的自動輸送;固持-釋放機構,互動式連接至該驅動機構,用於由該經偏向位置釋放該驅動機構。本發明之特徵在於可延遲的信號產生機構(92),用於產生指示藥物已被完全輸送之聽得見及/或觸覺及/或視覺信號,該可延遲的信號產生機構(92)係可操作地連接於該預先拉緊的驅動機構與該柱塞桿(56)之間。54‧‧‧柱塞桿驅動器58‧‧‧驅動元件59‧‧‧支撐元件62‧‧‧樞轉軸64‧‧‧啟動構件66‧‧‧鎖定元件68‧‧‧凸耳94‧‧‧信號產生元件103‧‧‧信號產生元件彈簧106‧‧‧支臂110‧‧‧延遲元件