(b)(4).Batch # t92z80.Investigation summary.The hand piece was received with the cable insulation damaged.In addition the housing was not broken nor damaged as reported.However this did not create a functional issue.The device was connected to a generator, evaluated with a test instrument and was found to be functional.The instrument was disassembled to perform an internal electrical test that revealed a hand activation open circuit condition at the cable level, affecting the functionality of the handpiece.The manufacturing records were reviewed, and the manufacturing/packaging criteria were met prior to the release of this batch.No conclusion could be reached as to what caused this issue.Possible causes that may have contributed to the cable damage include the cable being ran over, or getting tangled by the cart wheels.A manufacturing record evaluation was performed for the finished device and the manufacturing criteria were met prior to the release of this lot/batch.If information is obtained that was not available for the initial report, a follow-up report will be filed as appropriate.
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