#$%^&*AU2020201233A120200312.pdf#####MEDICAL DELIVERY DEVICE WITH AXIALLY EXPANDABLE DRIVE MEMBER ABSTRACT A drive assembly for a device for use with a medicament container having a container body and a slidable piston therein. The drive assembly includes a drive ribbon that can be retracted and extended and comprises a drive ribbon movable between an axially retracted configuration and an axially extended configuration to advance said piston axially within the container body. During movement of the drive ribbon a retracted portion of the drive ribbon defines a spiral about a drive axis, and an extended portion of the drive ribbon defines a helical column about said drive axis in which a proximal edge section of the drive ribbon is in engaged with a distal edge section that is adjacent to the proximal edge section. The extended portion defines a distal end of the drive ribbon that is coupled to said piston. Fig 159/23 C~ C-c-In CCP) clit d-- GCI -. 4a. ! 2 Z..
