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Additional information: the reporter clarified that it was the wire guide that broke.Investigation - evaluation: a review of the complaint history, drawings, device history record, documentation, instructions for use (ifu), manufacturing instructions, and quality control was conducted during the investigation.The complaint device was not returned; therefore no physical examination could be performed.However, a document-based investigation was performed.There is no evidence to suggest the finished product was not made to specifications.Numerous design verification and validation activities have been performed to ensure that this device meets design requirements.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 related to broken wire guide.Per the ifu: "withdrawal or manipulation of the wire guide through the needle tip may result in breakage." it is possible this event is related to the torque placed on the wire guide; however there is not enough evidence to identify a definitive root cause at this time as the product was not returned.Based on the information provided, no product returned, and the results of our investigation; a definitive root cause could not be determined.Per the risk assessment, no further action is required.Monitoring will continue to be performed for similar complaints.
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