MAUDE Adverse Event Report: HEARTWARE, INC. HEARTWARE VENTRICULAR ASSIST SYSTEM - PUMP/DRIVELINE; VENTRICULAR (ASSISST) BYPASS

Model Number	MCS1705PU
Medical Device Problem Code	Pumping Problem (3016)
Health Effect - Clinical Codes	Thrombosis/Thrombus (4440); Appropriate Clinical Signs, Symptoms and Conditions Term/Code Not Available (4581)
Date of Event	07/29/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Investigation of this event is pending and a supplemental report will be sent upon its completion.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 the ventricular assist device (vad) exhibited low flow alarms.The patient subsequently underwent a vad exchange procedure.The device was explanted and replaced by another manufacturer's product.No further patient complications have been rep orted as a result of this event.
Event or Problem Description
It was further reported that the patient had thrombus in the vad requiring the exchange and placement of an impella 5.5 for support.
Additional Manufacturer Narrative
###a supplemental report is being submitted as additional information has being received for this event and sections have been 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.
Additional Manufacturer Narrative
A supplemental report is being submitted for analysis and investigation completion.Product event summary: (b)(6) and the associated outflow graft (lot no.2002842672) were not returned for evaluation.No performance allegations were made against the outflow graft.A review of the manufacturing documentation was not performed as the reported event and analysis are not related to a manufacturing or servicing issue.Review of the available autologs report revealed intermittent decreases in power consumption and estimated flows within the analyzed period and two (2) low flow alarms logged since (b)(6) 2025.Of note, raw log files were not available for analysis.As a result, the reported low flow event was confirmed.The reported thrombus event could not be confirmed due to insufficient evidence.Based on the information available, the device may have caused or contributed to the reported event.Based on risk documentation, multiple factors may have contributed to the low flow event including but not limited to thrombus at the inflow cannula/outflow graft, constriction at the outflow graft, poor vad filling, and/or inappropriate pump rotational speed.Per the instructions for use, thrombus is a known potential complication associated with the implantation of a vad.There was no evidence that the patient had a history of similar adverse events.Possible clinical factors that may have contributed to this event include the patient¿s pre-existing history and related comorbidities, the progression of their underlying disease, issues related to the therapeutic use of anticoagulant and antiplatelet medications and the patient's complex post-operative course.There are possible patient, pharmacological and procedural factors that may have contributed to this event.Investigation of this event is completed and the file will be closed.If new information is received, the file will be re-opened and a supplemental will be submitted.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: HEARTWARE VENTRICULAR ASSIST SYSTEM - PUMP/DRIVELINE
• Common Device Name: VENTRICULAR (ASSISST) BYPASS
• Manufacturer (Section D): HEARTWARE, INC.; 14400 nw 60th ave; miami lakes FL 33014
• Manufacturer (Section G): HEARTWARE, INC.; 14400 nw 60th ave; miami lakes FL 33014
• Manufacturer Contact: gerard torenvliet ; 8200 coral sea st ne; mounds view, MN 55112-4391 ; 7635269277
• MDR Report Key: 22679898
• Report Number: 3007042319-2025-01866
• Device Sequence Number: 9048061
• Product Code: DSQ
• UDI-Device Identifier: 00888707005364
• UDI-Public: (01)00888707005364(17)220930
• Combination Product (Y/N): N
• Initial Reporter State: TX
• Initial Reporter Country: US
• PMA/510(K) Number: P100047
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2021
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 09/29/2025

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: Lay User/Patient
• Device Expiration Date: 09/30/2022
• Device Model Number: MCS1705PU
• Device Catalogue Number: MCS1705PU
• 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: 07/29/2025
• Supplement Date Received by Manufacturer: 08/01/2025; 09/23/2025
• Initial Report FDA Received Date: 07/31/2025
• Supplement Report FDA Received Date: 08/05/2025; 09/29/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 09/02/2020
• 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: Life Threatening; Hospitalization; Required Intervention
• Patient Age: 63 YR
• Patient Sex: Male