Insertion head for medical or pharmaceutical applications, the insertion head comprising: a) a base (1, 2) having an underside that can be placed on organic tissue, b) an introduction device that can be introduced into the tissue, movably mounted by the base (1, 2), c) wherein the introduction device can be moved, relative to the base, from a protection position, in which a free end of the introduction device stands back behind the underside of the base (1, 2), into an introduction position, in which the free end of the introduction device projects beyond the underside of the base (1, 2), d) a handle (10, 12; 11, 12, 14) that projects away from the baste (1, 2), with a first handle component (10; 11, 14) and a second handle component that is movable relative to the base (1, 2) and the first handle component; e) wherein a coupling transmits a movement of the second handle component into a movement of the introduction device; f) wherein the introduction device (5, 15) is held on the base by way of a rotational axle; g) wherein a motion link block is provided, which is disposed acentrically with reference to the rotational axle; h) wherein a motion link guide is provided, which stands in interaction with the motion link block; i) wherein a movement of the second handle component relative to the base, over a first stretch (a) of a first section of the motion link guide, transfers the motion link block, guided by the motion link guide, from a first position that corresponds to the protection position of the introduction device (5, 15) into a second position that corresponds to the introduction position of the introduction device (5, 15), characterized in that j) the second handle component can be slided into the first handle component so far that a control ramp on the second handle component abuts against a deflection ramp on a connection element after completion of the procedure for transferring the introduction device (5, 15) from the protection position to the introduction position, which connection element reversibly connects the base with the handle (10, 12), deflecting it out of an engagement position, so that the handle and the base can be separated from one another. a) a base (1, 2) having an underside that can be placed on organic tissue, b) an introduction device that can be introduced into the tissue, movably mounted by the base (1, 2), c) wherein the introduction device can be moved, relative to the base, from a protection position, in which a free end of the introduction device stands back behind the underside of the base (1, 2), into an introduction position, in which the free end of the introduction device projects beyond the underside of the base (1, 2), d) a handle (10, 12; 11, 12, 14) that projects away from the baste (1, 2), with a first handle component (10; 11, 14) and a second handle component that is movable relative to the base (1, 2) and the first handle component; e) wherein a coupling transmits a movement of the second handle component into a movement of the introduction device; f) wherein the introduction device (5, 15) is held on the base by way of a rotational axle; g) wherein a motion link block is provided, which is disposed acentrically with reference to the rotational axle; h) wherein a motion link guide is provided, which stands in interaction with the motion link block; i) wherein a movement of the second handle component relative to the base, over a first stretch (a) of a first section of the motion link guide, transfers the motion link block, guided by the motion link guide, from a first position that corresponds to the protection position of the introduction device (5, 15) into a second position that corresponds to the introduction position of the introduction device (5, 15), characterized in that j) the second handle component can be slided into the first handle component so far that a control ramp on the second handle component abuts against a deflection ramp on a connection element after completion of the procedure for transferring the introduction device (5, 15) from the protection position to the introduction position, which connection element reversibly connects the base with the handle (10, 12), deflecting it out of an engagement position, so that the handle and the base can be separated from one another.