The invention is intended for use in medicine and enables maximally precise, quick and safe positioning of a coronary stent in the case of uncomplicated and complicated anatomical injuries of the coronary vascular bed, and also when stenting renal and visceral arteries. The claimed device consists of a body with a tail portion, a wheel for rotating a screw, a screw, a slider with threaded elements and a scale for identifying the position of the slider and a resilient tensioning member with elastic locking members disposed thereon, a wedge piece consisting of two elements, a spring and a lock button, arranged inside the body. When preparing the device for use, the coronary stent is first inserted on a delivery system into the device； the coronary stent is then manually manoeuvred on the delivery system to the injured site of the coronary artery, the delivery system is locked in the device, and the stent is positioned in the coronary artery using the rotation wheel. A second embodiment of the device consists of a body with a tail portion, a wheel for rotating a screw, a screw, rotating gears, a clamping cylinder, and a lock button with springs for accommodating guides for a delivery system inside the body. When preparing the device for use, the coronary stent is first inserted on a delivery system into the device； the coronary stent is then manually manoeuvred on the delivery system to the injured site of the coronary artery, the delivery system is locked in the device, and the stent is positioned in the coronary artery using the rotation wheel.
