It was reported that the procedure was to treat a heavily calcified and almost occluded right superficial femoral artery that was accessed via the retrograde approach.A 7.0 x 100 mm absolute pro vascular self-expanding stent system (sess) was advanced to the lesion, but resistance was felt with the anatomy and with a stent that had been implanted in a previous procedure.Once at the lesion, the stent could not be deployed and a clicking sound was coming from the thumbwheel.The device was removed from the anatomy and it was noted that part of the stent was exposed/flowering.It was further reported that it was suspected that the sess had not been unlocked when attempting to deploy the stent.A new absolute pro was used to successfully complete the procedure.There was no clinically significant delay in the procedure and no adverse patient effects.No additional information was provided.
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(b)(4).Visual and functional inspection was performed on the returned device.The failure to deploy, resistance during advancement, and noise was not confirmed due to the condition of the returned device.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history of the reported lot revealed no other incidents.The absolute pro instructions for use instructs: slide the safety lock proximally to the unlocked position, symbolized by an open padlock icon.If unit does not unlock, remove together with the introducer sheath or guiding catheter as single unit; do not use the unit.The investigation determined that the reported difficulties appear to be due to case circumstances.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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