It was reported that the procedure was to treat the popliteal and superficial femoral artery that is heavily calcified and mildly tortuous.An unspecified 7.0 mm in diameter balloon was used to pre-dilate the lesion and a 6.5x180mm supera stent was advanced.During deployment of the supera it was noted the stent was being elongated (approximately 30-40mm longer than intended).Additionally, the physician tried pushing and compressing the catheter from the device to try to compress the stent it however, it was unsuccessful.The stent was deployed part in the sheath and part in the vessel.A 3 cm cut-down was performed to placed the portion of the stent in the sheath inside the artery to fully treat the artery.To close the artery wall a graft (vein dissection) was performed.Patient is noted to be stable; however, clinically significant delay was reported.The health care provider doesn't blame the device, stating he made a mistake by choosing that length.No additional information was provided.
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The device was not returned for analysis.A review of the lot history record revealed no manufacturing nonconformities that would have contributed to this complaint.Additionally, a review of the complaint history of the reported lot revealed no other complaints reported from this lot.The investigation determined that the reported stent deployment difficulties and subsequent surgical intervention, delay in procedure and prolonged hospitalization were due to circumstances of the procedure.Based on the reported information, it appears that the deployment difficulty and stent elongation was due to stent size selection as it was reported that the length was too long for the treatment location.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.H6: code 4604 was added.
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