The device was returned to zoll medical corporation and the customer's report was not replicated or confirmed.The device was put through extensive testing including bench handling, stress testing, full functionality testing and ecg testing without duplicating any malfunction to the device.The device was recertified and returned to the customer.Review of the device did show an ecg advisory condition.However, this type of notification can occur when the multi-function cable or receptacle is receiving a poor connection or coupling.This could not be firmly established as the multi-function cable used was not returned as part of this investigation.The log entries do not appear to be the result of a device malfunction.No trend is associated with reports of this type.
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