(b)(4).A device history record review was performed on the outer tray and kit with no relevant findings.The customer reported the outer tray of the kit was damaged.The customer returned damaged kit.Visual examination of the returned kit revealed the lower left and right corners of the outer tray are stressed and the lower left corner was cracked under the flange.No other defects or anomalies were observed.The customer also provided photos that show the corner of kit having a crack.A corrective action is not required at this time as the investigation shows no evidence to suggest a manufacturing related cause.Per the manufacturing site, all incoming outer trays are visually inspected for evidence of stress marks prior to packaging as well as each packaged kit is inspected after sealing and prior to being placed into the corrugate container.The reported complaint that a tray was cracked was confirmed based on the sample received.Visual inspection of the returned kit revealed the lower left and right corner showed signs of stress and the left corner had a crack under the flange.The customer also provided photos that show the corner of kit having a crack.A device history record review was performed on the outer tray and kit with no relevant findings.Also, the outer trays are 100% inspected prior to and after packaging.It is unknown how the kit was handled during shipping or prior to use.The investigation found no evidence to suggest a manufacturing related cause.Therefore, the potential cause of the tray's corners being stressed , and cracking could not be determined.
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