(b)(4).A visual, dimensional, and functional inspection of the product involved in the complaint could not be conducted since the product was not returned.Thirteen samples were taken from the actual production (triflo ii incentive deep breathing exerc) lot # 73g1600654, a quality inspection was performed on the samples according to the procedures (b)(4), and no quality issues were found on the samples.A device history record investigation was conducted and did not show issues related to complaint.A document assessment (fmea) was conducted and no changes required.Corrective actions cannot be established since it is necessary to receive the physical sample to perform a proper investigation and confirm the alleged defect.At this time , since the sample is not available, it is not possible to determine the source of the defect reported.Customer complaint cannot be confirmed since the product sample is not available to perform a proper investigation and determine the root cause.If the alleged device sample becomes available at a later date, this complaint will be updated accordingly.
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