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 Codes	Failure to Deliver Shock/Stimulation (1133); Loose or Intermittent Connection (1371); Failure to Read Input Signal (1581)
Health Effect - Clinical Code	Appropriate Clinical Signs, Symptoms and Conditions Term/Code Not Available (4581)
Date of Event	06/30/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
Per the clinic, the patient experienced intermittencies and subsequent loss of connection to the internal device.Hardware exchanges and reprogramming attempts were made; however, the issue could not be resolved.Subsequently, the device was explanted on (b)(6) 2026 and the patient was reimplanted with another cochlear 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
• MDR Report Key: 50002998
• Report Number: 6000034-2026-02618
• Device Sequence Number: 10624921
• Product Code: MCM
• UDI-Device Identifier: 09321502014564
• UDI-Public: (01)09321502014564(11)110315(17)130314
• Combination Product (Y/N): N
• Initial Reporter State: OH
• Initial Reporter Country: US
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2011
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): N
• Reporter Type: Importer
• Type of Report: Initial
• Report Date (Section B): 07/23/2026
• Report Date (Section F): 07/23/2026

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?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 03/14/2013
• Device Model Number: CI512
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Was the Report Sent to FDA?: Yes
• Distributor Facility Aware Date: 06/30/2026
• Date Report to Manufacturer: 06/30/2026
• Initial Date Received by Manufacturer: Not provided
• Initial Report FDA Received Date: 07/27/2026
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention; Other
• Patient Sex: Male
• Date Report Sent to FDA: 07/23/2026