The invention relates to a needle insertion device comprising a housing with a mounting surface adapted for application to the skin of a subject, where the mounting surface defines a general plane and has a needle aperture formed therein. Adhesive means is arranged on the mounting surface for adhering the insertion device to the skin of the subject, the adhesive means surrounding the needle aperture. A needle comprises a distal pointed end adapted to penetrate the skin of the subject, the pointed end being arranged within the housing in respect of the general plane. The mounting surface surrounding the needle aperture is moveable between a first position in which the pointed end of the needle is arranged within the housing, and a second position in which the pointed end of the needle projects through the needle aperture, thereby pulling the skin portion corresponding to the intended site of needle insertion against the needle.