It was initially reported that one of the patient shoulder restraint hoops was broken and needs to be replaced.No patient involvement was reported.No further information was provided.The autopulse platform was subsequently returned to zoll for investigation.During review of the platform's archive data, it was observed that a user advisory (ua) 18 (max take-up revolutions exceeded) message occurred on the reported event date of (b)(6) 2015.Although the customer did not report this, ua 18 is considered a reportable malfunction.
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The autopulse platform (s/n (b)(4)) was returned to the manufacturer for evaluation.Visual inspection of the returned platform was performed which found that the top cover and front enclosure were cracked.The bottom enclosure was also found to be damaged and the restraint wires were cut and the battery clip was bent.The platform was functionally tested with a large resuscitation test fixture (lrtf) for 15 minutes, with no user advisories or warnings observed.A review of the platform's archive data was performed which found that a user advisory (ua) 18 (max take-up revolutions exceeded) message occurred on the reported event date of (b)(6) 2015.Per autopulse technical service guide (p/n 11377-006), a ua18 is exhibited when the autopulse has detected that either the patient's chest is too small while sizing the patient (take-up) or that there is no patient on the platform.As the archive did not record a change in the load, it has been concluded that there was no patient on the platform when the ua was exhibited.Based on the investigation the parts identified for replacement were the top cover, battery clip, front enclosure and bottom enclosure.In summary, the initial reported complaint of physical damage to the platforms shoulder restraint was confirmed during visual inspection and may have been attributed to user error, as the wires were cut.Following service, including replacement of the damaged parts, the device passed all testing criteria.
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