(b)(4).Batch # p91m7l.Investigation summary: the device was returned with no apparent damage.The device was connected to a test handpiece and tested on a gen11.The device was functional and worked as intended.There were no anomalies noted with the functionality of the device.No continuous activation was noted during testing.The device was disassembled to inspect the internal components and no anomalies were found.It could not be determined what may have caused the reported incident of: ¿ did not stop the power after activating button is not in use¿.The batch history record was reviewed and there were no defects, protocols or ncr(s) found during the manufacturing process related to this complaint.
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