METHOD OF OSSICULOPLASTY Russian patent published in 2023 - IPC A61F11/20 A61B17/00 A61F2/18 

FIELD: medicine, otorhinolaryngology.

SUBSTANCE: behind-the-ear approach is performed using the transmeatal route to reach the tympanic cavity. Tympanotomy and revision of the tympanic cavity are performed. After completion of the sanitizing stage of the operation, a complete ossicular prosthesis is installed and its stabilized. After reaching the tympanic cavity from the medial surface of the auricle in the surgical wound, a square-shaped cartilage flap is taken with sides of 1.0 cm and an oval-shaped autocartilaginous plate is made 0.3 mm thick, 3.5 mm long and 2.5 mm wide. The autocartilaginous plate overlaps the dimensions of the foot plate of the stirrup in length and width by 0.5 mm. Then, a hole with a diameter of 0.6 mm is made in the center of the autocartilaginous plate. After that, the following is determined: the length of a complete ossicular prosthesis containing a cap and a stem that consists of a rod and a sleeve with a diameter of 0.8 mm. The sleeve of the prosthesis leg is inserted into the hole made in the autocartilaginous plate with a diameter of 0.6 mm, setting it so that it protrudes 0.2 mm beyond the limits of the autocartilaginous plate along the vertical axis. Moreover, due to the difference in the diameters of these elements of 0.2 mm, the edges of the hole are bent, creating a seal on the prosthesis sleeve during the introduction. The position of the oval autocartilage plate and the position of the oval cap of the prosthesis are rotated relative to each other by 90 degrees in the horizontal plane. Then, a complete ossicular prosthesis, together with an oval autocartilaginous plate is placed on the foot plate of the stapes with an emphasis on the walls of the niche of the oval window.

EFFECT: method allows to improve the functional results of ossiculoplasty by ensuring the stability of the position of the complete ossicular prosthesis without losing its mobility.

1 cl, 3 dwg, 1 ex