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This mdr was generated under protocol (b)(4), as a result of warning letter cms# 617147.No lot number was provided; therefore, device history record review could not be completed.A product sample was received for evaluation.Visual and functional testing were performed.Two (2) pictures were received, according to the pictures received.It was seen that the unit has small fibers of material in the neck strap.One (1) sample was received without its original packaging inside a ziploc bag.Visual inspection was performed at 12 under normal conditions of illumination in order to detect any damage on the part.It was observed that the sample had excess of parylene.Additional it was tried to remove the excess of parylene using a glove.Parilene was easy removed from the unit.It was seen that productions personnel performs a 100% visual inspection during the assembly process in order to verify that the adhesive is free of contamination.Production personnel performs a 100% visual inspections before to cleaning the units in order to verify that parts are free of defects according to procedures.Quality inspectors takes a representative sample of the lot and performs a visual inspection in order to detect any contamination on the units and flacking or peeling of parylene was not acceptable on entire part.The most probable root causes are excess of parylene was produced during the superslick process since the racks was not clean correctly.The excess of parylene was produced during the superslick process since the quartz wasn?t clean correctly and it was dirty.The following actions were taken per previous complaints, as correctly actions, 6 quartz where purchased to have a backup and to make sure they had the time to clean them well.Per previous complaint, procedure was updated in order to include as part of the cleaning of the superslick, the cleaning of the rack that support the delring fixtures to prevent particulates on pieces.Per previous complaint, as mitigation a procedure was generated to ensure that racks has to be clean of parylene fibers to avoid contaminations on the units.As preventive action, production personnel was notified by area trainer on as awareness of the defect reported by the customer.
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