The present invention relates to a medicament delivery device, comprising a housing (10) having a proximal end (11) and a distal end (12) a hollow piston plunger (20) being arranged within the housing (10) a telescopic dose drum (40) being concentrically arranged between the housing (10) and the piston plunger (20), piston plunger driving means for driving the hollow piston plunger towards the proximal end, comprising a hollow drive drum sleeve (30) being movable arranged within the hollow piston plunger (20) and being fixedly connected to the telescopic dose drum (40), wherein the hollow drive drum sleeve (30) and the hollow piston plunger (20) are coupleable to each other actuation means operably connected to said hollow drive drum sleeve, wherein the hollow drive drum sleeve (30) and the hollow piston plunger (20) are operationally coupled such that axial movement of the actuation means towards the proximal end forces the hollow drive drum sleeve (30) and the hollow piston plunger (20) to couple together whereby the hollow piston plunger (20) and the telescopic dose drum (40) are displaced towards the proximal end for delivering the set dose. The invention is characterized in that the device further comprises a stop body (26) for inhibiting rotation of the telescopic dose drum (40) and the drive drum sleeve (30) when the set dose equals the remaining dose in the medicament container.本發明有關一藥物輸送裝置,包括外殼(10),具有近側端(11)及遠側端(12);中空的活塞柱塞(20),被配置在該外殼(10)內;可伸縮的劑量筒(40),被同心地配置在該外殼(10)及該活塞柱塞(20)之間;活塞柱塞驅動機構,用於驅動該中空的活塞柱塞朝該近側端,包括中空的驅動筒套管(30),被可運動地配置在該中空的活塞柱塞(20)內,且被固定地連接至該可伸縮的劑量筒(40),其中該中空的驅動筒套管(30)及該中空的活塞柱塞(20)係可釋放地耦接至彼此;作動機構,可操作地連接至該中空的驅動筒套管,其中該中空的驅動筒套管(30)及該等中空的活塞柱塞(20)係操作地耦接,使得該作動機構朝該近側端之軸向運動強迫該中空的驅動筒套管(30)及該中空的活塞柱塞(20)耦接在一起,由此該中空的活塞柱塞(20)及該可伸縮的劑量筒(40)被位移朝該近側端,用於輸送該設定劑量。本發明之特徵在於該裝置另包括一止動本體(26),用於當該設定劑量等於該藥物容器中之剩餘劑量時,禁止該可伸縮的劑量筒(40)及該驅動筒套管(30)之旋轉。10‧‧‧外殼11‧‧‧近側部分12‧‧‧遠側部分13‧‧‧窗口21‧‧‧螺紋表面29‧‧‧塞子41‧‧‧遠側部分41a‧‧‧劑量設定旋鈕49‧‧‧溝槽72‧‧‧推按旋鈕80‧‧‧容器夾具81‧‧‧窗口
