(b)(4).Per info supplied by the customer, no product will be returned.A review of complaint history, the device's instructions for use (ifu), and quality control were conducted.Quality control checks that surface is clean and free of any surface imperfections.There is no evidence to suggest that the product was not manufactured to specifications.This product is shipped with an ifu which states warnings, precautions and instructions for use.We are inconclusive as to why this failure mode occurred.Quality engineering risk assessment was used to access the risk of this complaint.The addition of this complaint does not change the conclusion that no further risk reduction is required.The appropriate internal personnel have been notified and we will continue to monitor for similar complaints.
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