An intrauterine device with a gutter for treating uterine scar failure after cesarean section, which is a metal rod of cylindrical shape, with a rounded tip and a flat handle with a diameter of 13 mm, 190 mm long, used for surgical treatment of uterine scar failure after cesarean section, characterized in that has a grooved recess at a distance of 50 to 68 mm from the tip, corresponding to the localization area of the postoperative scar in the lower uterine seg A method allowing effective scar excision and suturing through the entire thickness to restore the lower uterine segment of the myometrium. Description of the intrauterine manipulator with a gutter. The intrauterine manipulator (Fig. 1) is a stainless steel metal cylinder: 190 mm long, 13 mm in diameter (there are also options with with a cylinder diameter of 12.0 mm and 12.5 mm), with a rounded tip of a lively shape and a semi-cylindrical handle. At a distance of 50 cm to 68 mm (from the tip) there is a grooved recess of 6 mm depth. The diameter of the recess is 18 mm and corresponds to the curvature of the needle used to sew the scar. There is also a second version of the manipulator, in which the gutter is located closer to the tip - from 40 to 58 mm (with a small uterus and a closer location of the scar). The intrauterine manipulator is inserted into the uterine cavity through the cervical canal, after preliminary expansion by Gegar's dilators. The new intrauterine manipulator is different from existing options with the following features: a. the intrauterine device has a groove with a depth of 6 mm and a circle diameter of 18 mm, which is installed directly under the postoperative scar, which allows you to optimally excise and suture the scar through all layers； b. the manipulator allows you to optimally match the edges of the wound for subsequent suturing； suturing of the edges of the incision is made through all layers above the trough of the manipulator, which corresponds to the curvature of the needl
