The device, used in treatment, was returned for evaluation.A visual inspection confirms that the threads on the caps are damaged causing the cap to disassemble from the mallets.This failure mode has been previously identified.A design change has been implemented to reduce/eliminate this failure mode from recurrence.This device was manufactured prior to the changes being implemented.This instrument exhibits signs of significant use and wear.The device was manufactured in 2013.A review of complaint history on the listed part revealed no prior complaints for the listed batch with the same failure mode.A review of the manufacturing records did not reveal any manufacturing or material abnormalities that could have caused or contributed to the reported incident.This device is a reusable instrument that can be exposed to numerous surgeries; damage from repeated use can occur.Design specification insufficient is likely the probable cause of the reported event.We recommend that all reusable instruments be routinely inspected for wear and damage and replaced as necessary.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.Based on this investigation, the need for corrective action is not indicated.Should additional information be received, the complaints will be reopened.
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