Additional information received 11june2018: lot number unknown three attempts were made by codman to try to obtain the product for evaluation.22may2018: product status changed to: sample discarded.There was no surgical delay reported.Natus completed their investigation on 07june2018.Investigation results forwarded by codman on 11june2018 included the following: methods: review of device history records.Review of complaints history.Investigation summary: as reported by the ous affiliate, the patient developed an infection after duraform was used during a surgery.A revision surgery was performed.The lot number is unknown.Complaint sample was not returned to codman and no lot number information has been provided; therefore, an evaluation of the device could not be performed and manufacturing records could not be reviewed.The cause(s) of the difficulty reported by the customer could not be determined.Complaint will be closed as 'no complaint sample returned to codman for evaluation'.If the complaint sample becomes available, this complaint will be reopened, and the respective evaluation performed.A review of complaint records for the previous 12 months could not be performed as no lot number information was provided.The most recent complaint and smt presentation was reviewed and did not show that this product family exceeded its upper control limit for complaints.Trends will be monitored for this or similar complaints.Investigation methods/evaluation results: complaint sample was not returned to codman and no lot number information has been provided; therefore, an evaluation of the device could not be performed and manufacturing records could not be reviewed.The cause(s) of the difficulty reported by the customer could not be determined.Root cause category: undetermined : insufficient information failure code codman : product analysis : device not returned root cause description complaint sample was not returned to codman and no lot number information has been provided; therefore, an evaluation of the device could not be performed and manufacturing records could not be reviewed.The cause(s) of the difficulty reported by the customer could not be determined.No further corrective & preventative actions proposed.No corrective action required based on the above evaluation.Trends will be monitored for this or similar complaints.Cross reference mdr # 2023988-2018-00012 (2 mdrs filed, because 2 different part numbers provided by the user facility).This complaint is now deemed closed.
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