(b)(4).The sample was returned for evaluation.A visual exam was performed and no physical damage was observed.The device could be inflated and deflated with the check valve normally.It was observed that the deflation was slightly sluggish with deflated with the red plug open; however, with a slight pinch on the sides on the red plug the deflation improved.A device history record review was performed and there were no issues found that could relate to the reported complaint.Based on the investigation performed, the reported complaint could not be confirmed.The device was functional and could be inflated and deflated using the check valve.The deflation could improve with a slight pinch on the sides of the red plug.This could be due to inevitable expansion and contraction of the components material during logistics movement over time.
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