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(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Date of event: dates estimated.The device remains implanted in the patient.The lot history record (lhr) could not be reviewed and a similar incident query could not be performed because the product was not returned for evaluation and the lot number was not reported.The reported patient effect of restenosis is listed in the supera instructions for use as a known potential patient effect associated with use of the device.A conclusive cause for the stent fracture and stenosis cannot be determined.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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It was reported through a research article that approximately 8 months post implant of a 5 x 60 mm supera treating a subtotal occlusion of the popliteal artery, the patient presented with right limb claudication, and absent pulses of the right foot.Radiography was performed, noting the stent was fractured and re-stenosed/occluded.Surrounding vessels were patent.Considering that recanalization of the vessel was not possible, a popliteal to popliteal bypass was performed.The procedure was successful and post-operative course uneventful.Details are listed in the attached article, titled fracture of a supera interwoven nitinol stent after treatment of popliteal artery stenosis.Please see article for additional information.
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