(b)(4).Batch #unk.Investigation summary: the device was returned with the distal tip of the blade broken off and not returned.The remaining blade portion was scratched with evidence of contact with metal in or out of the operative field.This blade tip portion may have broken off of the device during transport to our analysis site.During functional testing on gen11, an alert screen was displayed.A probable cause for the device to stop activating and the gen11 to display an alert screen is blade damage.The device was disassembled to inspect the internal components and no anomalies were found.As the instrument was recognized by the gen11, the reported event of "communications issues" could not be confirmed.A manufacturing record evaluation was performed for the finished device and the manufacturing criteria were met prior to the release of this lot/batch.Probable causes of blade damage, including breakage, are external contact during pre-op or general use, blade contact with other devices, 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 activations may increase the severity of the blade damage.This in turn can result in activation issues such as failing the pre-run test with the generator and displaying an alert screen.These alert screens that can result include ¿tighten assembly,¿ ¿blade error detected¿ or "relax pressure on blade," followed by a ¿replace instrument¿ screen later in the procedure.Continued usage can result in a broken blade.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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