METHOD FOR TREATING CICATRICIAL STENOSIS OF THE PHARYNX OF LARYNX Russian patent published in 2019 - IPC A61B17/24 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to otorhinolaryngology, and can be used for surgical management of cicatricial stenosis of the middle larynx. Endoprosthesis is formed individually for each patient, and the length of endoprosthesis is 4 mm greater than the length of stenosis. Endoprosthesis consists of a hollow silicone tube with diameter of 5 mm, wrapped from outside with porcine xenopericardium treated with chlorhexidine by ion-covalent immobilization of chlorhexidine. Using CO₂-laser in "super pulses" mode with power 3 W under control of microscope, excision of scar tissue is performed. Normal laryngeal lumen is formed, releasing vocal cords. Flap coated with an unchanged epithelium and facing the anterior surface of larynx 4 mm wide is formed on the anterior wall of the larynx between the right and left vocal cords. Submucous tissues of the flap and vocal cords edges are vaporized leaving the upper and lower epithelial layers with the size sufficient to close the wound surface. Said layers cover edges of wound surfaces. Formed endoprosthesis is inserted into the laryngeal lumen and fixed with sutures to the anterior surface of the neck.

EFFECT: method enables reducing the probability of complications associated with the endoprosthesis installation, reducing the probability of scars formation recurrence, reducing the length of the endoprosthesis installation from 1–1½ months to 2 weeks due to localization, diameter and fixation method of the endoprosthesis, which does not prevent breathing and separating functions of the larynx, non-action of the laryngeal frame and minimal tissue traumatization.

1 cl, 13 dwg, 1 ex