Related Experiment Video
Updated: Aug 8, 2026
Testing a Cochlear Implant Electrode Insertion Training System for Optimal Electrode Array Placement in Different Inner Ear Anatomies
Published on: February 6, 2026
[Multi-channel cochlear implantation in patients with congenital inner ear malformation accompanied middle ear
1Department of Otolaryngology, Peking Union Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China.
Objective:
To report the multi-channel cochlear implantation in three patients with congenital inner ear malformation accompanied middle ear malformation, including CI surgery and postoperative outcomes of hearing and speech recovery.
Method:
Multi-channel cochlear implantation surgeries have been performed in three cases with congenital inner ear malformation accompanied middle ear malformation in our hospital from May 1995 to May 2002. The transmastoid approach was performed to the cases with congenital inner ear malformation accompanied middle ear malformation. The postoperative sound field hearing tests were taken to the cases three months after the cochlear implantation.
Result:
Multi-channel cochlear implantation was successfully performed in three cases with congenital inner ear malformation accompanied middle ear malformation. The 27, 28, 32 electrodes were inserted respectively in three cases. The intraoperative "Ozze" occurred in three patients. No severe intraoperative and postoperative complications occurred in three cases. All postoperative hearing thresholds were at 35-40 dBHL. CONCLUSION Multi-channel cochlear implantation could be performed in the cases with congenital inner ear malformation accompanied middle ear malformation through the transmastoid approach. The postoperative outcomes were satisfied.
