(b)(4).Internal file number - (b)(4): during processing of this complaint, attempts were made to obtain complete event, patient and device information.The device is expected to be returned for evaluation.It has not yet been received.A follow up report will be submitted with all additional relevant information.
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It was reported that an armada dilatation catheter was advanced to an arterial venous (av) fistula, venous side, where a previous unspecified stent had been placed.The balloon was inflated to nominal pressure when the balloon caught on the implanted stent and the balloon shredded.The armada dilatation catheter was removed with some of the balloon still attached.A snare was used to remove other pieces of the shredded balloon; however, some pieces remained in the av fistula.There was no further treatment provided for this issue.There was no clinically significant delay.There was no additional information provided regarding this issue.
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(b)(4).Visual inspections were performed on the returned device.The reported balloon rupture and tear was confirmed.The reported damage by the previously implanted stent could not be replicated in a testing environment as it was based on operational circumstances.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.The investigation determined the reported damage by previously implanted stent, balloon rupture, balloon tear/separation, foreign body in patient and treatment appears to be related to circumstances of the procedure.Based on the information reviewed, there is no indication of a product quality issue with respect to manufacture, design or labeling.
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