Novo Nordisk A/s

Dan Noertoft Soerensen

Klaus Bendix

Daniel Patrick Godskesen True

The present invention provides a drug delivery device () comprising: a drug reservoir () comprising a reservoir body () extending along a reference axis and an elastomeric stopper () arranged in the reservoir body (), the elastomeric stopper () comprising a stopper body () extending between a front stopper end () and a rear stopper end () and having a plurality of axially spaced apart circumferential ribs () for sealing interaction with an interior wall () of the reservoir body (), and a plunger rod structure () for displacing the elastomeric stopper () relative to the interior wall (), the plunger rod structure () extending along the reference axis and comprising a distal end face () adapted to interface with the rear stopper end (). The distal end face () comprises a first force transferring portion () and a second force transferring portion (), the first force transferring portion () axially leading the second force transferring portion () and being adapted to interact with a peripheral portion of the rear stopper end ().

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Alleroed, Denmark

Dan Noertoft Soerensen