In the war with Ukraine, the Russian Federation very widely uses prohibited ammunition, in particular cluster shells, tries to destroy the infrastructure, as a result of which our soldiers and the civilian population receive serious shrapnel and bullet injuries to the body and limbs. This necessitates an increase in the volume of military field surgery aimed at primary and restorative care for victims of the specified injuries. Since the injury often occurs not only with radiopaque fragments and bullets, the diagnosis of the position of foreign bodies in the wound channel or in the patient’s cavity is complicated. At the same time, the ability of glass to shatter in the body requires the opening of wounds for treatment and removal of these foreign objects, which increases the trauma and prolongs the rehabilitation period of the patient. Therefore, the search for simple and reliable means of diagnosing foreign objects in the patient’s body in the battlefield is an urgent and extremely important task today, the solution of which can save the life and health of thousands of wounded. Research scientific work was devoted to the search and development of a new method of diagnosing the presence of non-contrast foreign objects (fragments) in a patient’s wound by means of direct contact. Experiments were carried out for the research – extraction of a fragment from the simulator and study of the characteristics of the obtained noise diagrams. During the experiment, a surgical simulator was used and a copy of the fragment was reproduced by the method of 3D printing. A study of controlled signals depending on the type of foreign object in the wound channel was conducted. As a result, the functional conditioning of the controlled signals from the shape and type of the foreign object was revealed. The scientific novelty is that the functional conditioning of controlled signals from the shape and type of a foreign object in the wound canal has been revealed. The practical significance lies in the development of a fundamentally new tool for inspecting wound canals, consisting of a flexible probe for individual use and a handle of a holder with a microphone capsule, the membrane of which is directly connected to the probe and reacts to mechanical contact with an obstacle, and the capsule itself through a signal amplifier directly from connected to an oscilloscope that has spectral signal processing chains. P.S. Real human tissues and fragments were NOT used in the scientific work. The experiment was conducted using simulators.