Complainant alleged that during a shift check, the autopulse® platform displayed a user advisory (ua) 20 (position out of range) message, that was unable to be cleared.Complainant also reported that the autopulse was missing a head restraint.There was no report of any patient involvement.No further details were provided.
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The autopulse platform (s/n (b)(4)) was returned to the manufacturer for analysis.Visual inspection of the returned platform was performed which found that both of the head restraint wire strands were damaged and the battery clip was twisted.The platform failed initial functional testing as it exhibited a user advisory 20 (position out of range (no unwind)).A review of the archive was performed and no anomalies were found on the reported event date of (b)(6) 2014, however, multiple ua20s were noted to have occurred on (b)(6) 2014, which is the last recorded customer use of the platform.No parts were replaced to remedy the customer's reported complaint.The platform underwent and passed all final functional testing.The customer's reported complaint of the platform exhibiting a ua20 was confirmed through both review of the archive and initial functional testing (exhibiting the error upon power on).The root cause was determined to be that the encoder shaft was one revolution off from being in the "home" position.The encoder shaft was turned to the "home" position, remedying the customer's reported complaint.
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