The report of the autopulse platform (sn (b)(4)) intermittently display user advisory (ua) 41 (patient temperature sensor failure) error message was confirmed during functional testing and archive data review.During functional testing, the platform displayed ua 41 error message on the user control panel upon power up.However the ua 41 was cleared during evaluation.The archive data was reviewed and contained multiple user advisory (ua) 41 (patient temperature sensor failure) error messages.As a precautionary measure to prevent the reoccurrence of the ua 41 error message, the temperature sensor cabling and processor board were replaced.The storage and shift check conditions are not known; however, factors such as ambient storage condition (e.G., fire truck in sun) or soft surface that may block air vents are known to cause ua 41 error messages in rare cases.The autopulse platform is a reusable device and was manufactured on 21 feb 2013.It has exceeded its expected service life of 5 years.The platform has not seen regular preventive maintenance.As part of the routine service during testing, the device was examined and observed a defective shaft lock pin, load cell, and encoder gearbox.Additionally a sticky clutch plate.These observations are not related to the reported event.After replacement of the defective parts and clutch plated deburring, the platform was functionally tested to full specification.Historical complaints were reviewed for service information related to the reported complaint and there was no previous history of complaint reported for autopulse serial number (b)(4).
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