Zoll medical corporation evaluated the device and the customer report was not replicated or confirmed.The device was put through extensive testing which included bench handling, defib testing, and full ecg and pace functional testing using test ecg and multifunction cables without duplicating a malfunction to the device.The device was recertified and returned to the customer.No trend is associated with reports of this type.Review of the device log suggests poor patient coupling with ecg leads played a role in the report.We do know the device was capable of delivering therapy.The ecg cable or the multifunction cables were not returned as part of the investigation.
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