MAUDE Adverse Event Report: MC3 Inc. MC3 ECMO Oxygenator; OXYGENATOR, LONG TERM SUPPORT GREATER THAN 6 HOURS

Model Number	48135
Medical Device Problem Codes	Fluid/Blood Leak (1250); Material Deformation (2976)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Type of Reportable Event	Malfunction
Event or Problem Description
Medtronic received information that after crystalloid priming but prior to blood priming, the mc3 nautilus extracorporeal membrane oxygenation (ecmo) oxygenator leaked.The leak occurred from the unit itself, not from the connections. no patient blood loss, unplanned blood transfusion, or plasma breakthrough occurred. the device was replaced.There was no patient involvement, so no adverse effect occurred.
Additional Manufacturer Narrative
Device evaluation summary: visual inspection shows evidence of damage to the qb-outlet port.The device appears to have been primed.Testing was not able to be performed with the outlet port damage.Reason for the return was undetermined.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: MC3 ECMO Oxygenator
• Common Device Name: OXYGENATOR, LONG TERM SUPPORT GREATER THAN 6 HOURS
• Manufacturer (Section D): MC3 Inc.; 2555 bishop circle west; dexter MI 48130
• Manufacturer (Section G): MC3 Inc.; 2555 bishop circle west; dexter MI 48130
• Manufacturer Contact: alison sweeney ; parkmore business park west; galway ; EI ; +353(091)708096
• MDR Report Key: 50769256
• Report Number: 3011468686-2026-00056
• Device Sequence Number: 18747518
• Product Code: BYS
• UDI-Device Identifier: 10854916006871
• Combination Product (Y/N): N
• Initial Reporter State: TX
• Initial Reporter Country: US
• PMA/510(K) Number: K191935
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 09/15/2026

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: Health Professional
• Device Model Number: 48135
• Device Catalogue Number: 48135
• Device Lot Number: 2506103
• Was Device Available for Evaluation?: Yes
• Date Returned to Manufacturer: 09/10/2026
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/17/2026
• Initial Report FDA Received Date: 09/15/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 06/30/2025
• 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: Unknown