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(b)(4).Investigation - evaluation: a review of the complaint history, drawings, device history record, documentation, drawing, instructions for use (ifu), specifications, quality control and visual inspection of the returned device was conducted during the investigation.The device is shipped with an ifu that describes the intended use, specific items are addressed such as: "the advance 35lp low profile pta balloon dilation catheter is indicated for percutaneous transluminal angioplasty (pta) of lesions in peripheral arteries including iliac, renal, popliteal, infrapopliteal, femoral and iliofemoral as well as obstructive lesions of native or synthetic arteriovenous dialysis fistulae." the ifu also precautions, "the catheter is not intended for the delivery of stents.All stents should be deployed in accordance with the manufacturer¿s indications and instructions for use.The visual inspection of the returned device reported the affected product shows signs of longitudinal split and circumferential separation.Proximal balloon segment measures approximately 1.2 cm in length.Distal balloon segment measure approximately 2.4 cm in length.The balloon was reported to be inflated to 13 atmospheric pressure (atm) against the ifu and used in stent deployment, also against the ifu.Over inflation likely lead to rupture, and the stent likely caused the rupture to occur circumferentially rather than longitudinally.There is no evidence to suggest the product was not made to specifications.Review of device history record shows no nonconforming events which could contribute to this failure mode.It should be noted there were no other reported complaints for this lot number.Based on the information provided and the results of our investigation the root cause was failure to follow instructions.The appropriate internal personnel have been notified and we will continue to monitor for similar complaints.Per the quality engineering risk assessment, no further action is required.
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