Investigation ¿ evaluation.The ureteral stent was not returned therefore a physical investigation could not be performed.The complaint was unable to be confirmed and the root cause of the reported patient¿s complaint of pain and discomfort with the cook stents was not able to be determined.Current controls for manufacturing are in place to assure functionality and device integrity prior to shipping.The model and lot number of the implicated device were not provided; therefore, a review of the device history record for non-conformances cannot be completed.Additionally, a review of complaint history for other associated complaints could not be completed.Should additional information be received, this complaint will be updated accordingly.Based on the information provided, the actual root cause is unknown.Based on the quality engineering risk assessment; no further action is required.Cook medical has notified the appropriate personnel and the will continue to monitor the complaints database for similar complaints.
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