The surgical intervention


The surgical intervention of cochlear implantation, which naturally becomes under general anaesthesia, is a delicate otosurgical operation.
The section of skin is made behind the ear. We reveal and prepare the temporal bone with the mastoid apophysis.
A mastoid section is done, the place of the facial nerve is checked by the localization of the two driver-points of the short leg of inkus and the outside semicircle pipe and finally a rear tympanic section takes place.
Via this we enter the concave of the eardrum and with a thinnest adamantine drill, slightly above the round window, we open up the cochlea - cochleostomy.
Via the cochleostomy we import, with attention, in the tympany scale of the cochlea, the electrode in such depth in order that the 22 individual electrodes are found in the cochlea. Then in suitable case under the skin we place the rest internal component of the cochlear implant.
A danger in the operation is the injury of the facial nerve in the mastoid portion, this mainly in existence of relative anatomic abnormalities. To avoid this serious incident we monitoring the function of the facial nerve through the duration of the operation.