It was reported that the procedure was performed to treat a lesion in the popliteal artery with heavy calcification and moderate tortuosity.The vessel was pre-dilated with an unspecified 5mm balloon dilatation catheter (bdc) then the target lesion was pre-dilated with an unspecified 6mm bdc.The 6mm bdc was unable properly prep the proximal part of lesion resulting in an insufficient lumen; however, the 5.0x100mm supera stent self expanding system (sses) was advanced to the lesion and deployed.During deployment, the stent elongated approximately 20% in the proximal part of the lesion and ending in a 7mm polytetrafluoroethylene (ptfe) bypass graft.The first half centimeter of the stent is located in healthy tissue.There were no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.
|
The device was not returned for analysis.Electronic lot history record (elhr) and corrective and preventive actions (capa) reviews were performed and revealed no indication of a product quality issue.Additionally, a review of the complaint handling database identified no other incidents from this lot.Reportedly, the procedure was performed to treat a lesion in the popliteal artery with heavy calcification and moderate tortuosity.It should be noted that the supera peripheral stent system instructions for use states: precaution: the post-dilated vessel should be at least the size of the stent diameter.If recommended vessel diameter cannot be gained, optimal stent deployment may not be achieved and revised stent sizing should be considered.Additionally, the stent placement ¿ precautions section 6.2 states: failure to predilate the vessel according to table 15 may impair nominal/optimal stent delivery.Furthermore, the warnings section 5.0 states: careful attention should be paid when sizing and deploying the stent to prevent stent elongation.The investigation determined the reported difficulties appear to be related to deviation of the instructions for use as it is likely that insufficient pre-dilatation of the lesion resulted in the reported elongated/stretched stent.Based on the reported information and results of the complaint investigation there is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
|