An application device with a ureteral stent, which includes a ureteral stent base body and a receiving body connected to the ureteral stent base body by means of at least one connection element of the ureteral stent, as well as with an introduction component for retaining the ureteral stent and for guiding the ureteral stent through a ureter of a patient along a flexible guide element, wherein the ureteral stent is displaceable along the flexible guide element in movement directions (R1, R2) opposite to each other by means of the introduction component, and the introduction component is formed to guide the ureteral stent base body and the receiving body in displacing in the respective movement directions (R1, R2), and the introduction component includes a recess for introducing and retaining the receiving body, wherein the introduction component includes at least two pipe sections (60, 70), into which the flexible guide element can be introduced, as well as at least one connection area connecting the at least two pipe sections (60, 70) to each other, wherein the at least two pipe sections (60, 70) and the at least one connection area delimit the recess, and a first pipe section of the at least two pipe sections (60, 70) is formed as a proximal end of the introduction component, into which a distal base body end of the ureteral stent base body facing the receiving body is introduced at least in certain areas at least with the ureteral stent retained on the introduction component, characterized in that a tube is arranged in the first, proximal pipe section of the introduction component, wherein the tube comprises a tube passage opening, the diameter of which decreases towards the receiving body such that it is approximately equal to or equal to a diameter of a passage opening of the receiving body, or the tube comprises a tube passage opening, the diameter of which is approximately equal to or equal to a diameter of a passage opening of the receiving body, and a proximal end area of the tube is formed funnel-shaped for receiving the distal base body end, and/or a distal end area of the tube comprises at least one slant and/or at least one step, such that a diameter of the recess increases in the area of the slant or step. the introduction component includes a recess for introducing and retaining the receiving body, wherein the introduction component includes at least two pipe sections (60, 70), into which the flexible guide element can be introduced, as well as at least one connection area connecting the at least two pipe sections (60, 70) to each other, wherein the at least two pipe sections (60, 70) and the at least one connection area delimit the recess, and a first pipe section of the at least two pipe sections (60, 70) is formed as a proximal end of the introduction component, into which a distal base body end of the ureteral stent base body facing the receiving body is introduced at least in certain areas at least with the ureteral stent retained on the introduction component, characterized in that a tube is arranged in the first, proximal pipe section of the introduction component, wherein the tube comprises a tube passage opening, the diameter of which decreases towards the receiving body such that it is approximately equal to or equal to a diameter of a passage opening of the receiving body, or the tube comprises a tube passage opening, the diameter of which is approximately equal to or equal to a diameter of a passage opening of the receiving body, and a proximal end area of the tube is formed funnel-shaped for receiving the distal base body end, and/or a distal end area of the tube comprises at least one slant and/or at least one step, such that a diameter of the recess increases in the area of the slant or step.