(b)(4).Batch # r9248y.Investigation summary: the instrument was received with the electrode tip bent and the shaft sheath damaged at the instrument tip and not detached as reported.A bent electrode could have caused this damage to the sheath.Caution should be taken not to retract the electrode into the sheath when it is bent.However, no conclusion could be reached as to how the tip of the electrode got bent.The batch history record was reviewed and no defects, nc¿s or protocols related to the complaint, were found during the manufacturing process.
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