METHOD OF RESTORING POSTERIOR WALL OF EXTERNAL ACOUSTIC DUCT Russian patent published in 2015 - IPC A61B17/00 A61F11/00 

FIELD: medicine.

SUBSTANCE: external wall of the attic is ablated. The posterior wall of the external acoustic duct is ablated with the exposure of mastoid cells. Revision of the middle ear cavities, chains of the acoustic ossicles is carried out. Bone shelves and pathologically changed tissues are ablated with smoothing the trepanation cavity wall. Autogenic bone flour is obtained from the mastoid cortical bone. The bone flour is covered with biological glue "BioGlue" from two sides with 1 mm thick layers. A 3-5 mm thick plate, corresponding in shape and dimensions to the bone defect of the posterior wall is formed and fixed on the cavity walls in the area of projection of the posterior wall of the external acoustic duct. Ossiculoplasty, myringoplasty are carried out. Plasty of the external wall of the attic is carried out by the autocartilage and perichondrium. The thinned autofascia of the temporal muscle or perichondrium is put above the transplant plate. A meatotympanic flap is laid above the autofascia/ perichondrium at a natural level. Tamponade of the external acoustic duct is carried out.

EFFECT: method ensures the effective treatment of chronic purulent otitis of the middle ear, complete restoration of the middle and external ear architectonics, makes it possible to avoid trauma of the auricle cartilage, displacement of the transplant in the post-operative period, post-operative complications due to the application of the autotissue as the transplant, formation of a specified plate of the transplant and application of biological glue BioGlue.

3 cl, 2 dwg, 2 ex