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Issue identified during product analysis.Medtronic conducted an investigation based upon all information received.It was reported that this 980 ventilator failed the extended self test (est).The device was available for evaluation.He service personnel (sp) inspected the ventilator and confirmed the reported issue and replaced inspiratory flow module printed circuit board assembly (ifm pcba).The ventilator passed all calibrations and tests per manufacturer specifications at the time of service.One ifm pcba was returned for failure investigation.A visual inspection was carried out on the returned ifm pcba and no anomalies were observed.The part was attached to the test ventilator and powered up but failed the extended self test (est) circuit pressure test.After a thorough investigation, a faulty autozero solenoid (so1) on the ifm pcba was identified.Analysis also determined the ifm pcba was prior to the implementation of a change to address autozero solenoid (so1) failures.Investigation determined if so1 were to fail while in use on a patient, the ventilator response would be to enter backup ventilation (buv).The cause of the reported event was isolated to a faulty autozero solenoid (so1) on the ifm pcba.There is an existing previous internal investigation regarding this issue.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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