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Device evaluation:the reported bubble port working intermittently was verified during service.Service technician found the two batteries were old and were replaced.Service technician found the error number 59 sc mpu pm channel 1 gain, and 69 sc mpu ups open battery detected hard error.Nvram data did not persist.The issue was traced back to the system controller module and power supply which were both replaced.Service technician attempted general testing.The mp/p assembly failed to maintain pressure, and was replaced with assembly 560 bioconsole mp module.Service technician tested safety system board, all sensors performed as they should, tested bubble sensor with fully purged test loop, and tested along the line of the loop at different points.The only instance where the bubble sensor failed was on kinked tubing where the tubing was not being fully compressed by the bubble sensor leaving an air gap, which should result in a bubble detected error.The testing concluded after 4 hours.No additional problems were found.Preventative maintenance was completed per specifications.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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