MAUDE Adverse Event Report: LIVANOVA USA, INC. PULSE GEN MODEL 103; GENERATOR

Model Number	103
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Depression (2361)
Date of Event	10/03/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the patient was experiencing increase in depression.The patient suspects that it's due to low battery.No other relevant information has been received to date.
Additional Manufacturer Narrative
Livanova usa, inc.Submits this report to comply with 21 c.F.R.Part 803, the medical device reporting regulation, based on information that livanova has obtained, but may not have been able to investigate or verify prior to the date the report was required by the fda.This report does not constitute an admission, or a conclusion by fda or anyone else, that the device, livanova, or livanova's employees caused or contributed to the event described in the report.In particular, this report does not constitute an admission by anyone that the product described in this report has any "defects¿ or "malfunctions¿.These words are incorporated into the fda 3500a medwatch form by the fda, and livanova objects to their use.
Additional Manufacturer Narrative
A1 patient identifier (in confidence), initial report inadvertently used (b)(6) instead of (b)(6).A3a sex: initial report inadvertently left section blank when female should have been selected.B2 outcomes attributed to adverse event: should've been blank as this event is a malfunction.
Event or Problem Description
It was later reported that the patient received a battery replacement due to prophylactic reasons.The explanted device has not been returned to the manufacturer to date.No other relevant information has been received to date.

• Brand Name: PULSE GEN MODEL 103
• Common Device Name: GENERATOR
• Manufacturer (Section D): LIVANOVA USA, INC.; 100 cyberonics boulevard; houston TX 77058
• Manufacturer (Section G): LIVANOVA USA, INC.; 100 cyberonics boulevard; suite 600; houston TX 77058
• Manufacturer Contact: cindy scott ; 100 cyberonics blvd; suite 600; houston, TX 77058 ; 2816672681
• MDR Report Key: 23404895
• Report Number: 1644487-2025-10769
• Device Sequence Number: 17372414
• Product Code: MUZ
• UDI-Device Identifier: 05425025750030
• UDI-Public: 05425025750030
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: P970003
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2016
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Consumer,Health Professional
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 04/01/2026

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: 02/27/2017
• Device Model Number: 103
• Device Lot Number: 203341
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/03/2025
• Supplement Date Received by Manufacturer: 12/11/2025; 03/09/2026
• Initial Report FDA Received Date: 10/28/2025
• Supplement Report FDA Received Date: 12/11/2025; 04/01/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 04/15/2015
• 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 Age: 74 YR
• Patient Sex: Female