MAUDE Adverse Event Report: MEDTRONIC HEART VALVES DIVISION MOSAIC MITRAL BIOPROSTHETIC HEART VALVE; HEART-VALVE, NON-ALLOGRAFT TISSUE

Model Number	310C33
Medical Device Problem Codes	Perivalvular Leak (1457); Intravalvular regurgitation (4068)
Health Effect - Clinical Codes	Valvular Insufficiency/ Regurgitation (4449); Mitral Valve Insufficiency/ Regurgitation (4451)
Date of Event	02/12/2026
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
It was reported that during the implant of this 33mm mitral bioprosthetic valve, it was explanted and replaced with a 33mm mitral bi oprosthetic valve of the same model.The reason for the replacement was reported as redo with poor access.It was reported that the initial valve was implanted with 9 sutures, and transesophageal echocardiogram (te) showed leaks around sutured lines therefore the valve was explanted and the annulus was debrided.It was stated that the new 33mm mitral bioprosthetic valve was implanted with 12 sutures.It was further noted that the patient may be taken to the cardiac catheter lab to plug any holes/leaks.No additional adverse patient effects were reported.
Additional Manufacturer Narrative
Sections updated: b.2 b.5 h.6.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 received reported that upon the first attempt to bring the patient off cardiopulmonary bypass (cpb), there was a complete rupture of the posterior side of the mitral prosthetic valve causing a torrential posteriorly directed jet.The patient was put back on cardiopulmonary bypass (cpb) for the second repair.No additional adverse patient effects were reported.

• Brand Name: MOSAIC MITRAL BIOPROSTHETIC HEART VALVE
• Common Device Name: HEART-VALVE, NON-ALLOGRAFT TISSUE
• 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: 24579162
• Report Number: 2025587-2026-00264
• Device Sequence Number: 10392039
• Product Code: DYE
• UDI-Device Identifier: 00643169001572
• UDI-Public: (01)00643169001572(17)281031
• Combination Product (Y/N): N
• Initial Reporter State: NY
• Initial Reporter Country: US
• PMA/510(K) Number: P990064
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2026
• Device Explanted Year: 2026
• 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
• Report Date (Section B): 03/31/2026

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 Model Number: 310C33
• Device Catalogue Number: 310C33
• 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: 02/23/2026
• Supplement Date Received by Manufacturer: 03/11/2026
• Initial Report FDA Received Date: 03/12/2026
• Supplement Report FDA Received Date: 03/31/2026
• Date Device Manufactured: 11/02/2023
• 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; Life Threatening; Required Intervention
• Patient Age: 34 YR
• Patient Sex: Male