MAUDE Adverse Event Report: Cochlear Ltd Nucleus CI512 Cochlear Implant with Contour Advance Electrode; Nucleus 24 Cochlear Implant System

Model Number	CI512
Medical Device Problem Code	Therapy Delivered to Incorrect Body Area (1508)
Health Effect - Clinical Code	Inappropriate Device Stimulation of Tissue (4928)
Date of Event	08/06/2026
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Device analysis report attached.
Event or Problem Description
Per the clinic, the device was explanted on (b)(6) 2026 due to facial nerve stimulation.The patient was re-implanted with another device during the same surgery.

• Brand Name: Nucleus CI512 Cochlear Implant with Contour Advance Electrode
• Common Device Name: Nucleus 24 Cochlear Implant System
• Manufacturer (Section D): Cochlear Ltd; 1 university avenue; macquarie university, nsw 2109 ; AS 2109
• Manufacturer (Section G): Cochlear Ltd; 1 university avenue; macquarie university, nsw 2109 ; AS 2109
• Manufacturer Contact: rosdeelaila zulkifli ; unit ug-1, vertical podium; no. 8 jalan kerinchi,; wilayah persekutuan, kuala lumpur 59200 ; MY 59200
• MDR Report Key: 50682761
• Report Number: 6000034-2026-03204
• Device Sequence Number: 10481496
• Product Code: MCM
• UDI-Device Identifier: 09321502014564
• UDI-Public: (01)09321502014564(11)180518(17)200517
• Combination Product (Y/N): N
• Initial Reporter Country: UK
• PMA/510(K) Number: P970051
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2018
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Type of Report: Initial
• Report Date (Section B): 09/09/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Operator of Device: Lay User/Patient
• Device Expiration Date: 05/17/2020
• Device Model Number: CI512
• Device Catalogue Number: Z209051
• Was Device Available for Evaluation?: Yes
• Date Returned to Manufacturer: 08/25/2026
• Is the Reporter a Health Professional?: No
• Initial Date Received by Manufacturer: 08/13/2026
• Initial Report FDA Received Date: 09/09/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 05/18/2018
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Sex: Female