MAUDE Adverse Event Report: Cochlear Ltd Cochlear¿ Nucleus® Nexa® cochlear implant with Contour Advance® electrode; Cochlear¿ Nucleus® Nexa® System

Model Number	CI1012
Medical Device Problem Codes	Failure to Deliver Shock/Stimulation (1133); Malposition of Device (2616); Electrical Shorting (2926); Patient Device Interaction Problem (4001)
Health Effect - Clinical Code	Appropriate Clinical Signs, Symptoms and Conditions Term/Code Not Available (4581)
Date of Event	08/28/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
Per the clinic, the patient underwent revision surgery (device repositioning) under general anesthesia on (b)(6) 2026.Following the implant activation, a short circuit was detected on electrode 22.Followed by that, the patient experienced no nrt and absence of sound perception.Reprogramming attempts were made; however, the issue could not be resolved.The implanted device remains.Additional information has been requested but has not been made available as of the date of this report.

• Brand Name: Cochlear¿ Nucleus® Nexa® cochlear implant with Contour Advance® electrode
• Common Device Name: Cochlear¿ Nucleus® Nexa® 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: anu sundaraji ; unit ug-1, vertical podium; no. 8 jalan kerinchi; kuala lumpur, wilayah persekutuan 59200 ; MY 59200
• MDR Report Key: 50850350
• Report Number: 6000034-2026-03422
• Device Sequence Number: 9508409
• Product Code: MCM
• UDI-Device Identifier: 09321502069847
• Combination Product (Y/N): N
• Initial Reporter Country: CA
• PMA/510(K) Number: P970051/S225
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2026
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Type of Report: Initial
• Report Date (Section B): 09/22/2026

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 Model Number: CI1012
• Device Catalogue Number: P1979576
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Initial Date Received by Manufacturer: 08/28/2026
• Initial Report FDA Received Date: 09/22/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 12/11/2025
• 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: Male