The reported malfunction was observed during review of the activity logs.However, the reported problem could not be duplicated.The device was put through extensive testing without duplicating the report.The device was recertified and returned to the customer.Review of the device activity logs did show several check pads and lead off messages.However, these messages are intended to alert the user that a patient impedance is not recognized and not necessarily indicative of a device malfunction.These messages could mean poor coupling of the electrode pads to the patient's skin, faulty pads or a faulty multi-function cable.The electrode pads and the multi-function cable were not returned as part of this investigation.The customer did confirm that the electrodes were used with another device and worked fine.Analysis of reports of this type has not identified an increase in trend.
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