(b)(4).Investigation summary: the device was returned with the blade scratched and cracked.During functional testing on a gen11, an alert screen was displayed.Then the blade broke off during functional testing.When device was disassembled to inspect the internal components, no anomalies were found related to the reported event, however, what was found was that there was a cracked internal component; the y-link.Probable causes of blade damage, including breakage, are external contact during pre-op or general use, blade contact with other devices, contact with staples or clips during the procedure or using any means other than the blade wrench to attach or detach the blade.Once minor blade damage has occurred, subsequent activation may increase the severity of the blade damage.This, in turn, can result in the device failing the pre-run test with the generator and displaying an alert screen.The alert screens that can result may include ¿tighten assembly,¿ ¿blade error detected,¿ or "relax pressure on blade," followed by a ¿replace instrument¿ screen later in the procedure.Continued usage of the damaged blade can result in a broken blade.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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