The device history record, including acceptance testing results, was reviewed and found to conform to specifications.The device was subject to microscopic inspection and showed no signs of pre-existing material damage due to stress corrosion cracking, which indicates that the device may have been subject to inappropriate use.It must also be considered that the scissors involved in the event are delicate scissors intended for ophthalmic use, not for ent surgery.However, due to the fact that the device was returned incomplete, i.E., the broken-off tip is not available for inspection, it has not been possible to conclusively establish the cause of failure.
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