[Cochlear implantation with pericanal electrode insertion technique].

Objective: To investigate the surgical technique of the pericanal electrode insertion technique for ies cochlear implantation.
Method: Forty cases of sensorineural deafness were subjected to the ies cochlear implants. Cochleostomy was performed through the external auditory canal with a microdrill anterior to the round window. The electrode impedance and electrically auditory brainstem responses(EABR) were tested during the operation. The X-ray photographs were taken after the operation. The cochlear implant was activated in all 40 cases 4 weeks following surgery.
Result: All of the electrodes were inserted and all of the implants worked well. No electrode extrusions or serious surgical complications happened during postoperative observation for 6 months.
Conclusion: The pericanal electrode insertion technique is a safe approach for ies cochlear implantation.