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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.
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A supplemental report is being submitted for analysis and investigation completion.Product event summary: one (1) controller (b)(6) was not returned for evaluation as the controller was discarded.No performance allegations were made against (b)(6).A review of the manufacturing documentation was not performed as the reported event and analysis are not related to a manufacturing or servicing issue.Log file analysis revealed one (1) controller fault alarm logged on (b)(6) 2025 at 01:57:56, indicating an issue with the internal battery as well as multiple event exceptions logged on 23/may/2025 indicating an issue with the internal battery.In addition, log files revealed that the controller had been in use for more than two (2) years.Log file analysis also revealed one (1) low flow alarm logged on (b)(6) 2025 which is an additional finding, unrelated to the reported event.As a result, the reported event was confirmed.Based on the available information, the device may have caused or contributed to the observed low flow event.Applicable risk documentation, experience with events of similar circumstances, and the available information were considered; possible root causes of the controller fault alarm event may be attributed, but not limited, to a reduced charge capacity of the internal battery and/or a faulty internal battery charger integrated circuit.Based on risk documentation, multiple factors may have contributed to the observed 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.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.
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