1. The method of prosthetics of the sound-conducting system of the middle ear, including the introduction of sound-conducting material into the cavity of the middle ear and its subsequent installation, characterized in that the external ear cavity is cleaned within 2-3 days by placing a cotton swab moistened with purified vegetable oil in its cavity or the patient’s inviscid saliva, then after cleansing they are inserted into the middle ear cavity, previously sterilized in 75% alcohol, a prosthesis saturated with purified vegetable oil, and set a functional part by orienting its tapered end on grazing plate of the stapes and the foot end of the seal until the sound normal intensivnosti.2. A prosthesis for a sound-conducting system of the middle ear, consisting of an elastic material of polyurethane foam moistened in vegetable oil, characterized in that it is made of an elastic material - polyurethane foam of the ST1820 or ST 1930 or ST 2036 brand, has a length of 30-35 mm, supporting and functional ends wherein the supporting end has an elliptical base formed by a fifth-order Hilbert curve with dimensions of the base area of 20 × 13 mm and a thickness of 9-12 mm, and the functional end has a diameter of 6-7 mm and a cone shape, and the prosthesis at a distance from the base The supporting end of 9-12 mm to the cone has a narrowed shape. 3. The prosthesis according to claim 2, characterized in that refined sunflower oil is used as a vegetable oil for wetting the elastic material.1. Способ протезирования звукопроводящей системы среднего уха, включающий введение в полость среднего уха звукопроводящего материала и последующую его установку, отличающийся тем, что предварительно в течение 2-3 дней проводят очищение полости наружного уха путем помещения в его полость ватного тампона, смоченного очищенным растительным маслом или невязкой слюной пациента, затем после очищения вводят в полость среднего уха, предварительно простерилизованный в 75% спирте, протез, пропитанный о