There have been no additional complaints reported against the finish goods lot and the device history record shows the product was released per specifications.The customer returned one infusion sleeve with the bubble suppression insert (bsi), the infusion sleeve was visually inspected and no obvious defects were found.The irrigation holes were aligned 180° opposite to each other, the texture on the inner wall of the infusion sleeves was intact and no deformity was observed on the shaft of the infusion sleeve and the bsi.The infusion sleeve was able to be stalled on a mini flare tip from the lab stock on the handpiece, no twist was observed on the sample when performing the twist test on the tip and the center port of the infusion sleeve was fitted correctly on the tip.Using the infiniti console to test the returned infusion sleeve on the tip and handpiece was performed.The flow rate and irrigation free flow rates were within specification.The root cause of the customer's complaint could not be established; the returned sample met specifications, no issues were found with the infusion sleeve during testing.No contributing factors could be identified that could cause the customer¿s experience.After a thorough investigation of this complaint, it has been determined that this sample met specifications.Quality assurance will continue to monitor customer complaints via the complaint review meetings, and will take action for any future occurrences as is deemed necessary.Consumables manufacturing management has been made aware of this complaint through the consumer affairs review meeting.(b)(4).
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