MAUDE Adverse Event Report: MEDTRONIC HEART VALVES DIVISION MOSAIC; REPLACEMENT HEART-VALVE

Model Number	305C23
Medical Device Problem Codes	Gradient Increase (1270); Intravalvular regurgitation (4068)
Health Effect - Clinical Codes	Calcium Deposits/Calcification (1758); Aortic Valve Insufficiency/ Regurgitation (4450); Insufficient Information (4580)
Date of Event	03/18/2026
Type of Reportable Event	Serious Injury
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
Medtronic received information that 17 years and 8 months post implant of this 23mm mosaic aortic bioprosthetic valve, the patient is being evaluated for a transcatheter valve-in-valve replacement.The reason for evaluation was reported as increased gradient.Evidence of protruding calcification seen in the rci <(>&<)> lci.Subsequently on (b)(6) 2026, the patient successfully had a 23mm aortic transcatheter valve-in-valve replacement.No additional adverse patient effects were reported.
Additional Manufacturer Narrative
B1 and patient codes (ime/annex e): codes updated.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
Additional information was received that severe aortic insufficiency was noted prior to the aortic valve-in-valve replacement with a transcatheter valve.No additional adverse patient effects were reported.
Additional Manufacturer Narrative
B2, b5 and h6 updated.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: MOSAIC
• Common Device Name: REPLACEMENT HEART-VALVE
• Manufacturer (Section D): MEDTRONIC HEART VALVES DIVISION; 1851 e deere ave; santa ana CA 92705
• Manufacturer (Section G): MEDTRONIC HEART VALVES DIVISION; 1851 e deere ave; santa ana CA 92705
• Manufacturer Contact: alison sweeney ; parkmore business park west; galway ; EI ; 091708096
• MDR Report Key: 24739290
• Report Number: 2025587-2026-00360
• Device Sequence Number: 16018608
• Product Code: DYE
• UDI-Device Identifier: 00721902694745
• UDI-Public: (01)00721902694745(17)130522
• Combination Product (Y/N): N
• Initial Reporter State: PA
• Initial Reporter Country: US
• PMA/510(K) Number: P990064
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2008
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 04/14/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Expiration Date: 05/22/2013
• Device Model Number: 305C23
• Device Catalogue Number: 305C23
• 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: 03/20/2026
• Supplement Date Received by Manufacturer: Not provided; 03/31/2026
• Initial Report FDA Received Date: 03/31/2026
• Supplement Report FDA Received Date: 03/31/2026; 04/14/2026
• Date Device Manufactured: 06/23/2008
• 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; Life Threatening
• Patient Age: 81 YR
• Patient Sex: Male