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This mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).A review of the device history records shows there were no observations recorded during manufacture suggest an issue of this nature would occur with this lot of product.A product sample was received for evaluation.Visual and functional testing were performed.One (1) sample was received without its original packaging inside a ziploc bag.Sample was received in used conditions, with its obturator and with its certificate of safe handling.Visual inspection was performed at 12 under normal lighting to received unit, in order to detect any damage on the cuff.During the visual inspection, black spots were found in the tube.The unit as inflated with 5 cubic centimeter of air in order to see if there was any functional problem.When inflating the unit with air, the cuff inflated without problems.A review of the manufacturing process for part and list number, was conducted by quality engineer in order to verify that there are no situations or practices that could create the event as described in description of non-conformance section.All procedures are being carried appropriate.During the verification, 32 assemblies were reviewed to see if they had a molding issue such as short shot, cuts, split, voids, bubble or contamination according to procedures, no damage was detected on the units.The root cause of the reported issue could not be confirmed during evaluation; however, the most probable root cause is that damage occurred after the device left the manufacturing site.As a preventive action production personnel was notified by quality engineer as awareness of the defect reported by the customer.
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