The navio handpiece, intended for use in treatment, was returned for further evaluation and a visual and functional inspection was performed, which confirmed the reported event.Visual inspection did not find any rips or tears in the cable of the handpiece.The drill guide support was not bent and was stainless steel.There were no bent or damaged pins in the connector.The reported issue was investigated through functional evaluation.During a functional evaluation, handpiece characterization was done twice and resulted in t1 max torque values of 46 and 18.The handpiece was then sterilized and cooled for a day to check for a known issue when the handpiece motor requires higher than normal torque to move after sterilization.After cooling, it was tested 3 times and resulted in values of 68, 18, and 14.A device history record review found no conditions which could contribute to the reported event and the device met all manufacturing specifications during the release for distribution.A complaint history review found 30 similar reports and this issue will continue to be monitored.The root cause was found to be a mechanical component failure.These results were indicative of the known issue and corrective action has been requested for this issue.
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