METHOD FOR FORMING NEOTYMPANIC MEMBRANE IN SUBTOTAL TYMPANIC DEFECTS

摘要

FIELD: medicine.;SUBSTANCE: vivification of the tympanic membrane perforation and an inspected tympanoplasty are performed. Where it might be necessary, the tympanic cavities are sanitated, and an ossiculoplasty is performed. That is followed by myringoplasty using the autologous conchal cartilage. A rounded segment of the autologous cartilage 10-11 mm in diameter is cut out with preserving the perichondrium covering it from both sides. From one side the perichondrium is removed and left from the other side. The autologous cartilage kept attached to the perichondrium is put into a horseshoe shape 1.5-2 mm wide. A superoinferior size of the formed cartilage portion is greater than that of the bone ring. The mucous membrane of the inner surface of the rest tympanic membrane and walls of the anterior bone ring is separated, displaced from the fibrous ring. A bed is formed for the transplant. The formed transplant is placed into the bed with its perichondrium to the outside, and a convex side of the cartilage horseshoe to the anterior bone ring. The perichondral portion from its inside is placed on the handle of the hammer and on a posterior wall of the external acoustic meatus and covered with the meatotympanic flap which is coated with latex strips. The external acoustic meatus is packed.;EFFECT: method provides the reliable fixation of the transplant within the anterior portions by the size and shape of the cartilage component that prevents lateralisation of the neotympanic membrane, transplant retraction in the anterior tympanic ring.;2 dwg, 2 ex