(b)(4).Event evaluation: a review of complaint history, device history record, instructions for use (ifu), and quality control was conducted during the investigation.The complaint device was not returned for investigation." based on this information, and with no attached pictures and no returned device, the investigation will be conducted based on the assumption that the lumen did in fact split as reported on the complaint form.A review of production records was conducted as part of the investigation.There were no nonconformances or irregularities in the production of the complaint set or component device according to production records.There is no evidence to suggest that the device was not manufactured to specification.The set is shipped with ifu which gives intended use, warnings, precautions, product recommendations, and instructions for placement, use and maintenance of the catheter.The ifu includes the warning, "extreme caution must be used in placement and monitoring of catheters." without return of the complaint device and based on the information available, we are inconclusive as to the root cause of this incident.We have notified the appropriate internal personnel and will continue to monitor for similar events.
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