MAUDE Adverse Event Report: NEUROPACE, INC. NEUROPACE RNS SYSTEM

Model Number	DL-344-10-K
Medical Device Problem Code	Signal Artifact/Noise (1036)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/23/2026
Type of Reportable Event	Malfunction
Event or Problem Description
1.On (b)(6) 2026 npce identified evidence of a lead break.Signal artifact and high impedance were noted on the on the left parietal depth lead secured with a dog bone with lead protection.The lead is contralateral to the rns device.2.The lead programming was turned off.The patient reported that she hit her head hard when exiting her car, which may have contributed to the lead break 3.The lead was replaced on (b)(6) 2026.
Additional Manufacturer Narrative
(b)(4).Review of the ecog and impedance data are suggestive of a potential lead break.The explanted product was not returned to neuropace for analysis.

• Brand Name: NEUROPACE RNS SYSTEM
• Common Device Name: NEUROPACE RNS SYSTEM
• Manufacturer (Section D): NEUROPACE, INC.; 455 n. bernardo ave.; mountain view CA 94043
• Manufacturer (Section G): NEUROPACE, INC.; 455 n. bernardo ave.; mountain view CA 94043
• Manufacturer Contact: ramona gonis ; 455 n. bernardo ave.; mountain view, CA 94043 ; 5108822607
• MDR Report Key: 24621609
• Report Number: 3004426659-2026-00022
• Device Sequence Number: 21416011
• Product Code: PFN
• UDI-Device Identifier: 00855547005298
• UDI-Public: 010085554700529817280123
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: P100026
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 03/17/2026

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
• Device Model Number: DL-344-10-K
• Device Catalogue Number: 272838
• Device Lot Number: 35092-1-1-1
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/23/2026
• Initial Report FDA Received Date: 03/17/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• 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; Hospitalization
• Patient Age: 24 YR
• Patient Sex: Female