On 06/02/2016 integra investigation completed.Method: failure analysis, device history evaluation.Results: failure analysis - there were two sc iris scissors returned in used condition.One manufactured in jan.2015 and the other manufactured in march 2015 showing staining, residue, a purple tape marking on one of the handles and both tips broken.Inspected the sc iris scissors and noticed there is blackening at the break area (screw area) and also on the tip of the first one that is broken at the tip, indicating that this started out as a stress fracture and with continued use and cleaning it caused the metal to break down and eventually causing it to break.Not knowing how the scissors were processed/maintained, the complaint is confirmed.Complaint was against one scissors, can't tell which one.Device history evaluation - nonconforming product report / nonconforming material report history: there is no applicable nonconforming product report / nonconforming material report history: variance authorization / deviation history: none.Engineering change order/manufacturing change order history: there is no applicable engineering change order/manufacturing change order history.Corrective action preventive action history: there is no applicable corrective action preventive action history.Health hazard evaluation history: none.Conclusion: root cause has not been identified as a workmanship or material deficiency.
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