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	Failure to Read Input Signal (1581)
Health Effect - Clinical Code	Appropriate Clinical Signs, Symptoms and Conditions Term/Code Not Available (4581)
Type of Reportable Event	Malfunction
Event or Problem Description
Per the clinic, the patient experienced a loss of connection to the internal device (specific date not reported).Troubleshooting and hardware exchange attempts were made; however, the issue could not be resolved.The implanted device remains.There are plans to explant the device and to reimplant the patient with a new device; however, this has not occurred as of the date of this report.

• 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: hema dewi ; unit ug-1, vertical podium; no. 8 jalan kerinchi; kuala lumpur, wilayah persekutuan 59200 ; MY 59200
• MDR Report Key: 50813548
• Report Number: 6000034-2026-03334
• Device Sequence Number: 21364178
• Product Code: MCM
• UDI-Device Identifier: 09321502014564
• UDI-Public: (01)09321502014564(11)110517(17)130516
• Combination Product (Y/N): N
• Initial Reporter State: CO
• Initial Reporter Country: US
• PMA/510(K) Number: P970051
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2011
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other
• Initial Reporter Occupation: Administrator/Supervisor
• Type of Report: Initial
• Report Date (Section B): 09/18/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 05/16/2013
• Device Model Number: CI512
• Device Catalogue Number: Z209051
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Initial Date Received by Manufacturer: 08/24/2026
• Initial Report FDA Received Date: 09/18/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 05/17/2011
• 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: Other
• Patient Sex: Unknown