MAUDE Adverse Event Report: PERFUSION SYSTEMS AFFINITY NT BALANCE; OXYGENATOR, CARDIOPULMONARY BYPASS

Model Number	511B
Medical Device Problem Code	Gas Output Problem (1266)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	12/03/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
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.
Event or Problem Description
It was reported that during a surgical procedure involving the affinity nt oxygenator, there was insufficient oxygenation capacity and insufficient carbon dioxide removal capacity.The issue was identified as an alleged product performance problem with the oxygenator.Pco2 (partial pressure of carbon dioxide) was between 55.3mmhg and 55.8mmhg.Po2 (partial pressure of oxygen) was 115.3mmhg.Hct (hematocrit) was 32.7%.The device was replaced to complete the procedure.No patient complications have been reported as a result of this event.

• Brand Name: AFFINITY NT BALANCE
• Common Device Name: OXYGENATOR, CARDIOPULMONARY BYPASS
• Manufacturer (Section D): PERFUSION SYSTEMS; 7611 northland dr; brooklyn park MN 55428
• Manufacturer (Section G): PERFUSION SYSTEMS; 7611 northland dr; brooklyn park MN 55428
• Manufacturer Contact: alison sweeney ; parkmore business park west; galway ; EI ; 091708096
• MDR Report Key: 23713796
• Report Number: 2184009-2025-01578
• Device Sequence Number: 10402249
• Product Code: DTZ
• UDI-Device Identifier: 00763000187842
• UDI-Public: (01)00763000187842(17)270127(10)230559341
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K191444
• 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
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 12/04/2025

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: 511B
• Device Catalogue Number: 511B
• Device Lot Number: 230559341
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 12/03/2025
• Initial Report FDA Received Date: 12/04/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 01/27/2025
• 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
• Patient Weight: 100 KG