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(b)(4).Batch # j9130v.Investigation summary: the device was returned with no apparent damage.The device was connected to a test hand piece and a gen11, during functional testing it was noted that the hand control buttons were nonfunctional.However, the device did activate when tested with the foot switch.The device was disassembled to inspect the internal components.Corrosion was found at the hand activation domes.The corrosion in the domes is possibly caused when the device was soaked for cleaning before shipment for analysis.Due to the moisture discovered on the instrument, we are unable to determine how this condition impacted the performance of the device and therefore cannot conclude root cause.Our manufacturing, sterilization, packaging, and shipment processes do not introduce corrosion / moisture to the device.It is possible that due to the moisture found inside of the dome could have resulted in the continuous activation issues reported.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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