The present invention relates to an injection device comprising a medicament container (18) and a needle attached to said container, means (12,72) for automatic penetration of the needle, injection of medicament and withdrawal of the needle, comprising the steps of initiating a penetration sequence, followed by an injection sequence and followed by a withdrawal sequence, wherein a previous sequence triggers a subsequent sequence, and wherein said device further comprises a dampening means arranged and designed to dampen the movement of the injection means during the whole injection sequence.
