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Investigation - evaluation: a review of the complaint history, drawings, dimensional verification, device history record, documentation, instructions for use (ifu), manufacturing instructions, specifications, quality control, and visual inspection of the returned device was conducted during the investigation.The sheath of the flexor ansel guiding sheath was returned for evaluation and examined.The sheath tubing was returned separated from the connector cap/ check-flo body.The connector cap was removed from the check-flo body, and no nonconformities were noted.The flare passes through large lumen but does not pass through small lumen.The connector cap was confirmed to be built to specifications.A document-based investigation was performed.There is no evidence to suggest the finished product was not made to specifications.Review of the device history record of the finished product shows no nonconforming events that could contribute to this failure mode.A complaint history search revealed that there were no other reported complaints for this lot number.Based on the information provided, examination of the returned product, and the results of our investigation, a root cause of product use or handling related - user technique was determined as the physician pulled the check-flo valve off of the sheath, instead of pulling out the balloon.Per the quality engineering risk assessment, no further action is required.Monitoring will continue to be performed for similar complaints.
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