Zoll medical corporation evaluated the device and the customer's report was not replicated or confirmed.The device was put through extensive testing which included bench handling, power cycling, full ecg functionality testing and internal inspection without duplicating the report.The analog board was replaced as a precaution.The device was recertified and returned to the customer.No trend associated with reports of this type.Review of the device activity logs did not show any faults that could be associated with customer's report.
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