TYMPANOPLASTY TECHNIQUE FOR BENDING EXTERNAL AUDITORY CANAL Russian patent published in 2025 - IPC A61F11/20 A61B17/00 A61B6/03 A61F2/18 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to otorhinolaryngology. Before the surgical intervention, a computed tomography of the patient’s temporal bones is performed and measuring the bone thickness of the anterior wall of the external auditory meatus along its entire length from the capsule of the temporomandibular joint to the lumen of the external auditory meatus. Skin of posterior wall of external auditory canal is separated to annulus fibrosus, spina Henle is removed. Bone of the distal portion of the posterior wall of the external auditory meatus is smoothed to expose the mastoid process cells. Transverse incision of the skin of the posterior wall of the external auditory canal is performed to open the lumen of the external auditory canal. Then the skin of the anterior wall of the external auditory canal is incised from 12 to 6 o'clock of the conventional clock face at the level of the maximum bone thickness of the anterior wall of the external auditory canal established by computed tomography. Further, the skin of the anterior wall of the external auditory canal is separated in the medial and lateral directions from the incision to form medial and lateral flaps. Portion of the bone of the anterior wall of the external auditory canal is removed by the following thickness: from the maximum thickness measured on the preoperative computed tomography of the temporal bones to thickness of 1.0–1.5 mm. A front meatotympanic angle of 90°. After separation of skin of upper and lower walls of external auditory canal together with separated epidermis of tympanic membrane remnants medial flap of skin of anterior wall of external auditory canal is displaced in direction from medial to lateral, exposing bone of anterior meatotympanic angle. After the myringoplasty, a round silicone plate is placed in the anterior meatotympanic angle. Rectangular silicone plate is placed on the medial and lateral skin flaps of the anterior wall of the external auditory canal until it touches the plate within the anterior meatotympanic angle.

EFFECT: method provides higher efficiency of surgical intervention in case of pronounced bending of bone portion of external auditory canal by reducing the risk of postoperative fibrous overgrowth of the anterior meatotympanic angle by providing an improved view of the anterior meatotympanic angle with preserving the integrity of the temporomandibular joint capsule.

3 cl, 3 dwg, 2 ex