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

Model Number	DL-330-3.5-K
Medical Device Problem Codes	Signal Artifact/Noise (1036); High impedance (1291)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	01/13/2026
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
(b)(4).Evaluation of the patient ecogs and lead impedance.The review of the patient data was consistent with a potential lead break.
Event or Problem Description
Lead artifact and high impedances were initially observed in (b)(6) 2023, on the right thalamic depth lead.The lead was initially secured with a hemoclip with no lead protection.The lead was replaced and secured with a burr hole cover on (b)(6) 2026.

• 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: 24189313
• Report Number: 3004426659-2026-00005
• Device Sequence Number: 8131643
• Product Code: PFN
• UDI-Device Identifier: 00855547005342
• UDI-Public: 010085554700534217260106
• 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: 2023
• 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): 01/27/2026

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-330-3.5-K
• Device Catalogue Number: 1007928
• Device Lot Number: 33029-1-1-1
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 01/13/2026
• Initial Report FDA Received Date: 01/27/2026
• 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: Hospitalization; Required Intervention
• Patient Age: 34 YR
• Patient Sex: Male