The reported malfunction was observed during review of the activity logs.The reported problem could not be duplicated with the device.The device was recertified and returned to the customer.Review of the device logs did show pd core warning 247, check pads and poor pad contact messages during the event.These messages are not an indication of a device malfunction.Poor coupling and settling likely explains the accessories eventually working on another device during the event, but this could not be firmly established.The electrode pads and the multi-function cable used were not returned to zoll for evaluation.The clinical data was not available for review as part of the investigation.Analysis of reports of this type has not identified an increase in trend.
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