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Qn#(b)(4).A visual, functional, or dimensional inspection of the product involved in the complaint could not be conducted since the product was not returned.The device history review for et tube, cf,7.5 lot# 73c1900689 investigation did not show issues related to the complaint.Corrective actions cannot be established since it is necessary to receive the physical sample to perform a proper investigation and confirm the alleged defect.The customer complaint cannot be confirmed due the product sample is not available to perform a proper investigation and determine the root cause.If the alleged defect samples become available at a later date, this complaint will be updated accordingly.
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