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(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Patient age is estimated.The device was not returned for analysis.The investigation was unable to determine a conclusive cause for the reported slow deployment of the stent and waist appearance of the stent; however the failure to cross and treatment appear to be related to the circumstances of the procedure.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 identified no other incidents from this lot.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.The 2nd omnilink elite device referenced is being filed under a separate manufacturing report number.
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It was reported that during the procedure to treat a heavily calcified chronic total occlusion in the left common iliac artery, a 8.0mmx100mmx135cm absolute pro self-expanding stent system (sess) was advanced without issue to the lesion.The device was unlocked without issue.As the sheath was being retracted during deployment, with no resistance felt, the stent appeared to be constricted as it was being released and it was slow to expand.The stent was ultimately able to be deployed in the target lesion, but a waist was noted in the stent.Post-dilatation was performed but the waist was still present.Thus, a 7.0mmx59mmx135cm omnilink elite balloon expandable stent system (bess) was advanced to the absolute pro, but the omnilink elite was unable to cross through the waist area of the deployed absolute pro to treat the waist.The omnilink elite stent was alternatively deployed, overlapping the proximal end of the absolute pro stent.Another same size omnilink elite stent was then advanced and crossed the absolute pro without difficulty and was deployed, successfully resolving the waist, but a perforation resulted.The patient became hypotensive which was resolved with medication.An attempt was made to cross the perforation with a non-abbott covered stent, but it was unable to cross.Balloon tamponade with an unspecified balloon successfully resolved the perforation and the patient was discharged in good condition with adverse patient sequelae.No additional information was provided.
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