Patent ID: 9101719
Filing Date: 2015-08-11
Classification: A61M

Abstract:
1. A piston rod for an injection device, said piston rod comprising a first and a second legs, each leg comprising a bendable part and extending substantially proximally from a junction element at which a distal end of each of the first and second legs meet, each leg being capable of being folded at the location of its bendable part, said piston rod having a globally elongated shape substantially aligned on a longitudinal axis (A) and being in one of a folded position, in which said piston rod has a first length, and an unfolded position, in which said piston rod has a second length that is different from said first length, wherein when said piston rod is in said folded position, the first and second legs are folded at their respective bendable part, and an exterior surface portion of each leg, proximally spaced from said bendable part, faces the junction element, wherein when said piston rod is in said unfolded position, said exterior surface portions of said first and second legs face each other, said piston rod further comprising a coupling mechanism for coupling said exterior surface portions directly with each other when said piston rod is in said unfolded position.