It was reported that during a surgical procedure, the handpiece would not home correctly, the gears were jammed.The gears were adjusted in different positions but the burr would only move backward and not forward to touch metal plate.A new handpiece was used in order to start with the case.No surgical delay or patient injury was reported.Results of the investigation have concluded that the internal components of the handpiece motor have issues, causing increased torque values, which makes it a reportable event.
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The device, intended for use in treatment, was returned for evaluation.The initial functional inspection of the returned device found that the internal components of the handpiece motor had begun to deteriorate/fail, causing the increased torque values and the subsequent homing failures.The device history record was reviewed finding that the reported product met manufacturing specifications prior to be released for distribution.A complaint history review found similar complaints of the reported issues.The relationship of the device and the reported event has been established.The handpiece likely had internal motor issues which caused the reported event.Therefore, the root cause of the reported event was due to raw material/supplier fault.
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