(b)(4).As part of the investigation process, the finished good lot was reviewed.The device history record (dhr) review does not reveal any deviation of the current procedure that might have contributed to the reported condition.In addition, no nonconformance reports (ncrs) were opened for all the assembly levels, raw materials and incoming components.No changes to product manufacturing have been reported in the six months prior to its manufacture.One permcath catheter was received for analysis and investigation.Functional test was performed in order to confirm the reported condition and as a result a leak was identified in the shaft of the catheter.Visual inspection of the sample revealed a cut in the tubing approximately 1cm below the cuff.The following potential causes were identified: material: no potential causes were identified under material category.Dhr was reviewed and no deviations related to this failure mode were found.Manpower.Operator failed to follow procedures: manufacturing performed 100% visual inspection and 100% pressure test.The history record review for the lot number reported does not reveal any deviation of the current procedure that might have contributed to the reported condition.(discarded).Customer misuse: sample was received damaged after being in use for a period of 15 days approximately, during this time the catheter did not present problems and the issue was not identified prior to use.As per the instructions for use (ifu), catheter tubing can tear when subjected to excessive force or rough edges.Inspect the catheter frequently for nicks scrapes, cuts, etc., which could impair its performance.While the labeling provides an appropriate warning, labeling cannot prevent a clinician¿s failure to heed the warning nor can labeling control use of appropriate measures to use a device according to manufacturer instructions for use.Based on the available information this potential root cause could not be discarded.(not discarded).Equipment: equipment out of tolerance condition: the history record review for lot the number reported does not reveal any deviation of the current procedure that might have contributed to the reported condition.(discarded).Process/method: no potential causes were identified under process/method category.The dhr was reviewed and no deviations related to this failure mode were found.Environment: no potential causes were identified under environment category.The dhr was reviewed and no deviations related to this failure mode were found.This reported condition has been confirmed.Based on available information, the most probably root cause is product misuse.No trends or triggers have been found; therefore additional corrective or preventive actions are not required.It must be noted that in-process controls (such as personnel training, incoming quality acceptance testing for raw material, 100% in process visual inspection and visual acceptance sampling) are in place to prevent nonconforming product from leaving the manufacturing operations.This complaint will be used for tracking and trending purposes.
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