Device for inserting at least one insertion member (11, 12) having a puncturing tip, in particular at least one infusion cannula and/or at least one sensor tip, into the tissue of the body of a patient and for fixing it to the skin of the body, comprising: a) a housing (2, 2a, 2b, 10, 21) providing at least one contact face for placing the device onto the skin of the body of the patient, wherein the contact face carries a layer of skin compatible glue for fixing it to the skin, which layer in particular is covered by a removable protecting layer, b) an insertion arrangement movably arranged within the housing (2, 2a, 2b, 10, 21) comprising the at least one insertion member (11, 12) to be inserted into the tissue and a holder element fixedly connected with at least a part of the at least one insertion member (11, 12) which is intended to remain for a longer period inside the tissue of the body, c) drive means arranged within the housing (2, 2a, 2b, 10, 21) for effecting an insertion movement of the insertion arrangement from a first position, in which the puncturing tip of the at least one insertion member (11, 12) is set back relative to the contact face, into a second position, in which the puncturing tip of the at least one insertion member (1 1, 12) protrudes beyond the contact face, so that the at least one insertion member (11, 12) is inserted into the tissue of the body of the patient when the device during the insertion movement of the insertion arrangement is placed with its contact face on said body, wherein in the first position the insertion arrangement is oriented substantially perpendicular to a plane formed by the at least one contact face and the insertion movement is a linear movement along an axis perpendicular to said plane, wherein the contact face is formed by a base plate which is fixed in such a manner that, after the insertion movement has been performed, it is detachable from the rest of the housing (2, 2a, 2b, 21) and wherein the holder element of the insertion arrangement comprises coupling means by which it is coupled to the base plate when the insertion arrangement by the insertion movement is brought into the second position, characterized in that in an initial position the insertion arrangement is oriented substantially parallel to the plane formed by the at least one contact face and before the insertion movement can be performed must be pivoted from the initial position into the first position by tilting a drive unit housing, the tilting being effected by a pivot formed at a drive unit housing travelling in a guiding slot of a first housing element. a) a housing (2, 2a, 2b, 10, 21) providing at least one contact face for placing the device onto the skin of the body of the patient, wherein the contact face carries a layer of skin compatible glue for fixing it to the skin, which layer in particular is covered by a removable protecting layer, b) an insertion arrangement movably arranged within the housing (2, 2a, 2b, 10, 21) comprising the at least one insertion member (11, 12) to be inserted into the tissue and a holder element fixedly connected with at least a part of the at least one insertion member (11, 12) which is intended to remain for a longer period inside the tissue of the body, c) drive means arranged within the housing (2, 2a, 2b, 10, 21) for effecting an insertion movement of the insertion arrangement from a first position, in which the puncturing tip of the at least one insertion member (11, 12) is set back relative to the contact face, into a second position, in which the puncturing tip of the at least one insertion member (1 1, 12) protrudes beyond the contact face, so that the at least one insertion member (11, 12) is inserted into the tissue of the body of the patient when the device during the insertion movement of the insertion arrangement is placed with its contact face on said body,