Patent ID: 9452266
Filing Date: 2016-09-27
CPC Classification: A61M

Claim Text:
1. An injection device for injecting multiple settable doses of a liquid drug having a mechanical dose size display, which injection device comprises: a housing having a window for displaying the size of the set dose, a first scale drum carrying a series of first ciphers and surrounding a second scale drum carrying a series of second ciphers, both the first scale drum and the second scale drum being rotatable mounted relatively to the housing, a rotational dose setting member for transferring rotation to the second scale drum during dose setting and structure for transferring rotation from the second scale drum to the first scale drum, wherein, one of the first ciphers and one of the second ciphers are visible through the window at the same time, the second cipher being visible through an opening in the first scale drum and wherein, the first scale drum is helical guided via a helical track engagement such that the first scale drum move helically during rotation and the second scale drum is axially guided via an oscillating track engagement such that the second scale drum oscillates axially during rotation.