Nna/s

Peter Moller-Jensen

Jens Ulrik Poulsen

Soren Aasmul

Lars Hofmann Christensen

Henrik Ljunggreen

Jens Moller-Jensen

A drug delivery device comprising a housing ( ) with a drug container ( ) being provided with delivering means comprising a piston ( ) for expelling a drug ( ) from the drug container ( ). The housing ( ) further comprising a displaceable piston rod ( ) abutting the piston ( ) of the drug container ( ) and rotating means being in engagement with the piston rod ( ), said rotating means being provided with a one-way mechanism. The one-way mechanism comprises a helical spring ( ) wound tightly around an axle ( ), one end of said helical spring ( ) being fixed in relation to the housing ( ), the other end of the helical spring ( ) being in a free state.

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Copenhagen, Denmark

Peter Moller-Jensen