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One opened phacoemulsification tip in a wrench, in a bag was received for the report of cream dust was generated and burns also appeared on the wound.Sample was visually inspected and found to be conforming, functional occlusion test was performed and found to be nonconforming.Phacoemulsification tip inner diameter was pinned and piece of yellowish foreign material was extracted.Occlusion flow check was again performed and found to be conforming.The foreign material was sent for particle analysis.Particle analysis found the foreign material to best match viscoat.A review of the device history record traceable to the reported lot number, indicates that the reported product was processed and released according to the reported product¿s acceptance criteria.Particle analysis found the foreign material to best match viscoat.Viscoat is not a material that is used in the phaco tip manufacturing process or in the packaging process of the phacoemulsification tip.How and when viscoat was in the eye after phaco tip used cannot be determined from this evaluation and a root cause cannot be determined for the complaint as described by the customer.The most likely root cause for the viscoat is surgical material.A possible contributing factor to the thermal injury is if the viscoat occluded or partially occluded the phacoemulsification tip during use it would cause the phacoemulsification tip heat up and could potentially cause a thermal burn.The exact root cause for the foreign material is unknown, therefore specific action with regards to this complaint cannot be taken.All phacoemulsification tips are 100% visually inspected by trained operators using 30x magnification during the manufacturing process.Any nonconformance, such as the phaco tip cannula bent exhibited on the returned opened sample, is removed from the lot, and scrapped.Complaints are reviewed and monitored at regular intervals for any significant adverse trends.No adverse trends have been observed associated with the reported product and event.No further actions are required.The manufacturer internal reference number is: (b)(4).
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