(b)(4).The associated complaint devices were returned and evaluated.Visual inspection of the returned devices noted no obvious damage.The locking knobs on both devices were very tight.One device was manufactured in 2012 and the second device manufactured in 2014 a review of complaint history revealed no prior complaints for the listed lots.A review of the manufacturing records did not reveal any manufacturing or material abnormalities that could have caused or contributed to the reported incident.Our investigation did not determine a specific cause of the stated failure.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.This investigation could not verify or identify any evidence of product contribution to the reported problem.Based on this investigation, the need for corrective action is not indicated.We recommend that all re-usable instruments be routinely inspected for wear/damage and replaced as necessary.Should additional information be received, the complaint will be reopened.
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