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    • 7. 发明申请
    • DRIVE ASSEMBLY AND USE OF A SPRING IN A DRUG DELIVERY DEVICE
    • 驱动装配和在药物递送装置中使用弹簧
    • WO2011039216A3
    • 2011-06-03
    • PCT/EP2010064407
    • 2010-09-29
    • SANOFI AVENTIS DEUTSCHLANDVEASEY ROBERTBILTON SIMON LEWISJONES CHRISTOPHERKOUYOUMJIAN GARENMACDONALD CATHERINE ANNE
    • VEASEY ROBERTBILTON SIMON LEWISJONES CHRISTOPHERKOUYOUMJIAN GARENMACDONALD CATHERINE ANNE
    • A61M5/24A61M5/315
    • A61M5/3158A61M5/24A61M5/31541A61M5/31543A61M5/31555A61M5/31556A61M2005/2407A61M2005/2477A61M2005/3126
    • Resettable drive assembly for a drug delivery device is provided for. The resettable drive assembly may comprise a housing (10A, 10B, 10C), a piston rod (20) being rotatable and axially displaceable with respect to the housing between a proximal start position and a distal end position, a drive member (30) for distally displacing the piston rod towards the end position when dispensing a dose, and a stop member (50). The drive member is operable to interact with the piston rod for forming an unlockable first interlock, the first interlock being operable to block proximal movement of the piston rod with respect to the drive member. The stop member is operable to interact with the piston rod for forming an unlockable second interlock, the second interlock being operable to block proximal movement of the piston rod with respect to the housing. When the drive assembly is in a drive mode, the interlocks are locked such that proximal movement of the piston rod from the end position to the start position is prevented. For switching the drive assembly from the drive mode to a reset mode, the piston rod is rotatable with respect to the drive member for unlocking the first interlock and the stop member and the piston rod are rotatable with respect to each other for unlocking the second interlock. When the drive assembly is in the reset mode, the first interlock and the second interlock are unlocked such that proximal movement of the piston rod to the start position is allowed. Further, a drug delivery device and a use of a spring are provided for.
    • 提供了用于药物输送装置的可重置驱动组件。 可重置的驱动组件可以包括壳体(10A,10B,10C),活塞杆(20)可在近端起始位置和远端位置之间相对于壳体旋转和轴向移动;驱动构件(30),用于 当分配剂量时,将活塞杆朝向终端位置远端移动,以及止挡件(50)。 驱动构件可操作以与活塞杆相互作用以形成可解锁的第一互锁,第一互锁可操作以阻止活塞杆相对于驱动构件的近端运动。 止动构件可操作以与活塞杆相互作用以形成可解锁的第二互锁,所述第二互锁可操作以阻止活塞杆相对于壳体的近端运动。 当驱动组件处于驱动模式时,互锁被锁定,从而防止活塞杆从终端位置到起始位置的近端运动。 为了将驱动组件从驱动模式切换到复位模式,活塞杆可相对于驱动构件旋转,用于解锁第一联锁装置,并且止动构件和活塞杆可相对于彼此旋转以解锁第二联锁装置 。 当驱动组件处于复位模式时,第一互锁和第二联锁被解锁,使得允许活塞杆向起始位置的近端运动。 此外,提供了药物递送装置和弹簧的使用。