The device was returned for analysis.The reported mechanical jam was able to be confirmed.The reported activation failure was unable to be replicated in a testing environment due to the condition of the returned device.Additionally, the analysis noted the inner member was torn and there was a break in the shaft.Follow-up with the site was performed; however, the site was not aware of the tear or the break in the shaft.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.As there was no damage noted to the device during the inspection prior to use, the investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that interaction with the 80% stenosed anatomy and/or inadvertent mishandling resulted in the noted multiple device damages (kinked stent, overlapped stent struts/ connector, kinked/wrinkled sheath, kinked inner member, kinked and wrinkled jacket stabilizer/outer member, cracked jacket stabilizer) thus preventing the shaft lumens from moving freely resulting in the reported thumbwheel difficulties and ultimately resulting in the reported difficulty deploying the stent.There is no indication of a product quality issue with respect to manufacture, design or labeling.Na.
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