MAUDE Adverse Event Report: HOUSTON PULSE GEN MODEL 1000; GENERATOR

Model Number	1000
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Codes	Coma (2417); Asystole (4442)
Date of Event	10/27/2025
Type of Reportable Event	Serious Injury
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.
Event or Problem Description
It was reported that vns the patient experienced asystole and was brought back after a seizure.No known relevant surgical intervention has occurred to date.No additional relevant information has been received to date.
Additional Manufacturer Narrative
H6.Adverse event problem codes; corrected information; e011901 inadvertently left off of initial report despite being known at the time of submission.H4.Device manufacture date; corrected information; manufacture date inadvertently left off of initial report despite being known at the time of submission.D4.Lot number; corrected information; lot number inadvertently left off of initial report despite being known at the time of submission.

• Brand Name: PULSE GEN MODEL 1000
• Common Device Name: GENERATOR
• Manufacturer (Section D): HOUSTON; 100 cyberonics boulevard; suite 600; houston TX 77058
• Manufacturer (Section G): HOUSTON; 100 cyberonics boulevard; suite 600; houston TX 77058
• Manufacturer Contact: cindy scott ; 100 cyberonics blvd; suite 600; houston, TX 77058 ; 2816672681
• MDR Report Key: 23662899
• Report Number: 1644487-2025-10896
• Device Sequence Number: 21130536
• Product Code: LYJ
• UDI-Device Identifier: 05425025750504
• UDI-Public: 05425025750504
• Combination Product (Y/N): N
• Initial Reporter State: KY
• Initial Reporter Country: US
• PMA/510(K) Number: P970003
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2024
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Consumer,Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 02/02/2026

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: 05/09/2026
• Device Model Number: 1000
• Device Lot Number: 206303
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/27/2025
• Supplement Date Received by Manufacturer: 02/02/2026
• Initial Report FDA Received Date: 11/26/2025
• Supplement Report FDA Received Date: 02/02/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 06/18/2024
• 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: Life Threatening
• Patient Age: 43 YR
• Patient Sex: Female