Patent ID: 8652108

Claim:
A drug delivery device, comprising: a housing defining an interior space, a dispensing end for dispensing a drug from the interior of the housing, a flexible container positioned entirely within the interior of the housing for holding the drug, where a portion of the flexible container containing the drug is stored in a dispenser, the flexible container comprising an outlet, the outlet being connected to the dispensing end, and a squeezing member for squeezing the flexible container, wherein, for dispensing a dose of the drug from the drug delivery device, the squeezing member and the flexible container are axially displaceable relative to one another, the squeezing member rotating with respect to the housing during the relative axial displacement and squeezing the flexible container, thereby urging the dose of the drug from the container through the outlet, wherein a valve is provided in the flow path between the outlet of the flexible container and the dispensing end.