METHOD OF COCHLEAR IMPLANTATION IN PATIENTS WITH CYTOMEGALOVIRUS INFECTION Russian patent published in 2020 - IPC A61F11/00 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, particularly to otorhinolaryngology. Breech approach is followed by an anthromastoidotomy followed by a posterior tympanotomy to form a communication between an antromastoidal and a drum cavity to visualize the niche of the volute window. Thereafter, a bed of the implant body is formed, and a bone canopy is removed above the window of the cochlea until the membrane appears. That is followed by washing the antromastoidal and drum cavities, removing the membrane of the cochlear window with visualization of the spiral cochlear duct. Implant body is placed in bed, and the implant electrode is delivered through an antromastoidal cavity and a posterior tympanotomy lumen into the tympanic cavity. After detecting the membrane of the cochlear window, its diameter and diameter of the proximal electrode ring of the implant are measured. That is followed by making a protector, wherein the diameter of its lumen is equal to the diameter of the proximal electrode ring of the implant, and the outer diameter of its base is 1.0-2.0 mm larger than the diameter of the membrane of the volute window. After washing the antromastoidal and drum cavities, a haemostatic sponge is placed on their walls, including around the edges of posterior tympanotomy. After removal of the snail window membrane on the edges of the formed hole, the tread is installed so that its edges are matched with each other, protector lumen matched with continuation of coiled channel of coil, and tread base completely overlapped its edges. After insertion of the implant electrode into the tympanic cavity, it is delivered through the protector lumen into the lumen of the volute coil channel. After inserting the last proximal ring of the implant electrode, the tread and hemostatic sponge are removed from the operating cavity.

EFFECT: method enables providing more effective retention of residual auditory function in patients with cytomegalovirus infection accompanying cochlear implantation by reducing a risk of developing widespread intraoperative bleeding by forming protection of the lumen of the coil spiral passage from penetration of blood corpuscles.

3 cl, 5 dwg, 1 ex