(b)(4).No sample has been returned for investigation.Without the actual sample (or device), a through investigation could not be performed and no specific conclusion can be drawn as the cause of the reported event.After checking the respective documentation of the production (shift record, results of worker self-inspection and in-process control, machine documentation, cleaning record etc.) no deviations could be identified in the mentioned time period.This report is being filed as both a product problem and an adverse event due to the fact that the tip of the catheter may have remained in the patient.No intervention was done, and currently there was no serious injury to the patient reported, so the report has been classified only as a malfunction.If additional information becomes available, a follow up report will be submitted.
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