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Pma/510(k) number = pre-amendment.Investigation: evaluation: a review of the complaint history, device history record, 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.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, no product returned, and the results of our investigation, a definitive root cause could not be established.Per the [quality engineering] risk assessment, no further action is required.Monitoring will continue to be performed for similar complaints.This report includes information known at this time.A follow-up report will be submitted should additional relevant information become available.
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