The device was not returned for analysis.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other incidents from this lot.It is possible that interaction with the 80% stenosed lesion and/or the device was bent in the anatomy preventing the shaft lumens from moving freely resulting in the reported thumbwheel difficulties; however this cannot be confirmed.The investigation determined a conclusive cause for the reported physical resistance/sticking-thumbwheel cannot be determined.Manipulation of the compromised device and/or interaction with the 80% stenosed lesion likely resulted in the reported malposition of device (stent jumped when deployed).There is no indication of a product quality issue with respect to manufacture, design or labeling.
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