The returned unit had a significant amount of blood collection still in the unit.The lower right corner of the drain cover showed evidence of cracking and white stress marks.All units go through an automated leak test as part of the manufacturing process.Throughout the process the units go through several areas of visual, final packaging and quality control sampling inspections.The stress marks and cracking are evidence of damage that most likely occurred during shipping or handling of the unit once it was fully packaged.The instructions for use (ifu) states in the precaution section "do not use if package is damaged." summary/conclusion: the device history records indicate that this drain manufacturing lot met all acceptance criteria including the chest drain body and pressure testing.The unit had cracks and stress marks on the cover in the area of the leak, which indicates a significant amount of force was applied to that area either during shipping or handling at the facility.
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