It was reported that the stent partially deployed, and the sheath and stent were unable to be removed from the patient.Surgical intervention was required to remove the device, and portions of the stent remained implanted in the patient.An eluvia us, 7x120, 130 cm was selected for use in the percutaneous transluminal angioplasty (pta) procedure to treat claudication.The target lesion was located within the right superficial femoral artery (sfa) and was heavily calcified with a short segment of chronic total occlusion (cto).The physician attempted to cross the cto from contralateral groin with up and over access using a 6f non-boston scientific sheath, but was unable to do so.Access to the target lesion was gained via the tibial vessel and crossed from below using a non-boston scientific guidewire.The wire was then snared and pulled through the groin access in order to perform intervention from the left groin.The vessel was predilated using multiple inflations of a non-boston scientific balloon.Pta of the right proximal popliteal through the proximal sfa was performed.The physician then stented the proximal popliteal/distal sfa with a 7x150 eluvia with no issues.Then he placed a 7x120 eluvia in the mid sfa with no issues.Upon insertion of the complaint device, the third eluvia stent, it was observed that the stent did not easily advance within the sheath.Under fluoroscopy of the iliac bifurcation, it was observed that the sheath had buckled up into the aorta and the stent was within the buckled portion of the sheath.The entire system was pulled back into proper position, at which point the stent was able to advance easily.Stent deployment began using the thumbwheel in the mid-proximal sfa.Midway through the deployment, the sound of the wheel rachet changed.The pull grip was pulled, and the catheter was removed.Under fluoroscopy of the sfa, the physician observed that the proximal stent markers of the third eluvia were not visible where they should have been.Using fluoroscopy, it was observed that the proximal stent markers were in the mid-section of the sheath, approximately at the level of the right external iliac.The stent had elongated, with the distal portion of the stent deployed in the sfa and the proximal portion of the stent deployed in the sheath.The physician attempted to deliver a balloon through the groin sheath but was unable to advance it due to the proximal portion of the stent in the sheath.The physician then attempted to remove the sheath, but was unable to pull the sheath out.The patient was taken back to surgery to perform a cut down procedure to remove the sheath and stent.The sheath and most of the stent were able to be removed, but there were some residual pieces of the stent left within the patient.The patient was admitted to the hospital beyond the standard of care, and was returned to surgery to line the proximal portion of the artery with a covered stent.The patient was discharged to the (b)(6) physical medicine and rehabilitation unit on (b)(6) 2023.No further patient complications were reported.
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Device analysis: returned product consisted of an eluvia self-expanding stent system.The outer sheath, tip, inner sheath, and the remainder of the device were checked for damage.Visual examination revealed a kink to the outer sheath at the nosecone and 46cm from the nosecone.The outer sheath was buckled 71.5cm form the nosecone.The inner liner was kinked 11cm and 14.3cm from the tip.Microscopic examination revealed no additional damages.The stent appeared to have been deployed and did not return for analysis.Inspection of the remainder of the device revealed no other damage or irregularities.Product analysis found damage that could have contributed to the reported event.
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