The device was not returned for evaluation, however a review of the following was completed: complaint history, device history record, manufacturing instruction, quality control, and specifications.The review found no other complaints associated with the complaint device lot number.A review of production and quality documentation revealed no specific issues that may have contributed to this incident.A review of the device history record revealed two non-conformances; however none of these were related to this failure.Based on the information provided a root cause could not be determined.We will continue to monitor for similar complaints.Per the risk assessment no further action is required.
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