It was reported that during set-up of the device for a cardiopulmonary bypass (cpb) procedure, the unit was turning on and off.As a result, an alternate device was employed.The surgical procedure was completed successfully.There was no delay, no blood loss, nor adverse consequences to the patient.
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The reported complaint was confirmed.During laboratory analysis, the product surveillance technician (pst) was not able to duplicate the reported issue.As per pst, the ¿red x¿s¿ will appear within a perfusion screen for assigned devices (pumps or modules) that are recognized as being present but are giving a ¿broken mode¿ status to the nic communication channel.This can signify the loss of the five volts direct current (vdc) power to the device, or a severe drop in that voltage (to around 4.6 vdc or lower) to an individual device or to the entire network interface card (nic) panel.The bulk of this evaluation focuses on the assumption that a dip in five vdc power to the entire nic panel was occurring since several devices were involved, all on the right side nic panel.The pst inspected the returned cables and no damage or other anomalies were observed on any of the four returned cables.The power and can cables were manipulated while observing the perfusion display for red-x or other anomalies but no issues were observed.The device under testing (dut) with pumps and modules run for over 12 hours with no issue.Connected nic panel to a power manager board test fixture using the right side nic power and can communication cables and the device powered on properly with no issues.Per log analysis, on (b)(6) 2018, several of the pumps and modules are intermittently reporting "5v supply voltage test failure" and sometimes rebooting.Most likely the issue is with modules plugged into the right nic (nic3).The power manager is reporting nic brick #3 state changes to "connected with fault", likely from the reboots.Possible causes are the power manager, the power cable from the power manager to the right nic, or the nic itself.The cable connection is the most likely cause.These are the modules/pumps reporting 5v errors: large rollerlarge roller, large roller, gas system, flow meter, occluder, air bubble detector (abd).If additional information on this complaint that would alter the facts and/or conclusion, a supplemental report will be filed accordingly.
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