MAUDE Adverse Event Report: MEDTRONIC DOMINICANA NIM® PROBE; STIMULATOR, NERVE

Model Number	8225101
Medical Device Problem Code	False Negative Result (1225)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/09/2023
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that during thyroidectomy procedure, when the doctor used the probe to detect the nerve, found that the nim did not display the waveform.The doctor tried to reconnect the probe and used the patient simulator to check but useless.Finally, the doctor changed a new probe and the new probe could function normally.There was no patient injury.
Additional Manufacturer Narrative
H3: product analysis of the device found that visually, there was no damage in the construction of the device.Electrically, resistance of the entire assembly shall be less than 0.3 ohms and the actual measurement was 0.3 ohms which was out of specification.The probe tip fit securely into the handle with no issues.Functionally, the probe was connected to a nim system using a 1.0ma stimulating current and a 100v threshold and, while stimulating with a patient simulator, the system consistently returned 1.0ma and a waveform/event tone over 200v.There was no intermittent behavior while manipulating with the tip, connector, and the wire.This regulatory report is being submitted due to retrospective review through capa 624392.Medtronic submits this report to comply with fda regulations 21 cfr parts 4 and 803.Medtronic has made reasonable efforts to provide as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.Medtronic will submit a supplemental report if additional relevant information becomes known.

• Brand Name: NIM® PROBE
• Common Device Name: STIMULATOR, NERVE
• Manufacturer (Section D): MEDTRONIC DOMINICANA; zona franca de san isidro; carretera san isidro, km 17; santo domingo 11500 ; DR 11500
• Manufacturer (Section G): MEDTRONIC DOMINICANA; zona franca de san isidro; carretera san isidro, km 17; santo domingo 11500 ; DR 11500
• Manufacturer Contact: justin ellis ; 6743 southpoint drive north; jacksonville, FL 32216 ; 7635265677
• MDR Report Key: 21461341
• Report Number: 9612501-2025-00531
• Device Sequence Number: 15450400
• Product Code: ETN
• UDI-Device Identifier: 00763000040710
• UDI-Public: 00763000040710
• Combination Product (Y/N): N
• Initial Reporter Country: TW
• PMA/510(K) Number: K934426
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative,Distributor
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 02/26/2025

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: Health Professional
• Device Model Number: 8225101
• Device Catalogue Number: 8225101
• Device Lot Number: 0222188926
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 05/31/2023
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/14/2023
• Initial Report FDA Received Date: 02/25/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 05/11/2021
• 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
• Patient Sex: Male