Advanced bionics considers the investigation into this reportable event as closed.The external visual inspection revealed silicone damage on the top cover, and slices near the electrode ground ring and along the lead prior to receipt.These are believed to have occurred during revision surgery.The photographic imaging inspection revealed cut electrode wires at the fantail and a broken wire near the array.These are believed to have occurred during revision surgery.System lock was verified.The scanning electron microscopy (sem) analysis revealed corrosion on some electrodes.The device passed the mechanical test performed.The failure of this device is attributed to an electrode short in the electrode pocket.A corrective action was implemented.This version of the ultra is no longer distributed.This is the final report.Disclaimer: advanced bionics does not intend that this report be any admission of liability, fault or product defect.
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