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Investigation ¿ evaluation: it was reported by the distributor that foreign matter (yellowish-brown discoloration spots) was found in an unopened 'perc ncircle nitinol tipless stone extractor' package.There was no patient involvement.Reviews of the complaint history, device history record (dhr), manufacturer¿s instructions (mi), and quality control (qc) procedures were conducted during the investigation.Visual inspection of the returned complaint device was also conducted.One device was returned for investigation visual exam notes yellowish brown discoloration is noted on the tyvek portion of the sealed pouch.Additionally, a document-based investigation evaluation was performed.A review of the device master record (dmr) concluded that sufficient inspection activities are in place to identify this failure mode prior to distribution.A review of the device history record (dhr) found tree related non-conformance's reported for lot.One device was scrapped for foreign matter.The nonconformance was not sufficient evidence to conclude other devices in the lot were nonconforming.A complaint history database search showed no other complaint related to this failure mode (discoloration).Because there is adequate inspection activities have been established, there is objective evidence that the dhr was fully executed, and no other lot related complaints that have been received from the field.Cook has concluded that the device was manufactured to specification and that there is no evidence that nonconforming product exists in house or in field.Based upon the available information, inspection of the returned device, and results of the investigation, cook has concluded that the cause for the complaint could not be established.The appropriate personnel have been notified.Cook will continue to monitor for similar complaints per the risk assessment, no further action is required.This report is required by the fda under 21 cfr part 803 and is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement contained herein is intended to be an admission that any cook device is defective or malfunctioned, that a death or serious injury occurred, nor that any cook device caused, contributed to, or is likely to cause or contribute to a death or serious injury if a malfunction occurred.
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