The device, used in treatment, was returned for evaluation.A visual inspection of the returned rail distractor low profile right could not confirm the stated failure with no obvious signs of damage.This device was manufactured in 2018.A review of the manufacturing records did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.A review of the complaint history for the listed part revealed no prior complaints for the listed failure mode with the same batch number.A quality analysis indicated that we were able to evaluate the product and it functioned as intended when turning the screw counterclockwise.Also during our review, we reviewed the drawing and specs to ensure that all feature met the requirements.This review resulted in no non conformance's.However we did note that, when attempting to rotate the device clockwise you had to use quite a bit more effort to do so.This additional effort is intended but not to the extent that this device displayed.Further review of the drawings to determine if there is a way to possibly minimize the efforts used to rotate the device clockwise.This device is a reusable instrument that can be exposed to numerous surgeries; damage from repeated use can occur.Potential causes that could contribute to the reported event could include but not limited to design of device and procedural/user error.Based on this investigation, the need for corrective action is not indicated, however this failure is being reviewed.Should additional information be received, the complaint will be reopened.No further investigation warranted for this complaint; however we will continue to monitor for future complaints and investigate as necessary.We consider this investigation closed.
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