The device was returned for analysis.The reported mechanical jam and the reported activation failure were unable to be replicated in a testing environment due to the condition of the returned device.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 heavily calcified, heavily torturous and 90% stenosed anatomy resulted in preventing the shaft lumens from moving freely; resulting in the reported thumbwheel difficulties and the reported difficulty deploying the stent.Manipulation of the device resulted in the noted device damages (bent i-beam, sheath folded back inwards/wrinkled, sheath twisted in multiple locations) and ultimately resulted in the noted sheath separation; likely contributing to the reported difficulties.There is no indication of a product quality issue with respect to manufacture, design or labeling.
|
It was reported that the procedure was to treat a 90% stenosed lesion in the superficial femoral artery (sfa) with heavy calcification and heavy tortuosity.The 8.0x60mm absolute pro self expanding stent system (sess) was advanced on a 0.035 guidewire to the target lesion; however, the thumbwheel would not rotate to release the stent.Therefore, the sess was removed from the patient.There was no adverse patient effect and no clinically significant delay reported in the procedure.Another absolute pro stent was used to complete the procedure.Return device analysis found the sheath was separated distal to the i-beam band.The sheath material at the separation was twisted, uneven and torn.No additional information was provided.
|