(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).The device was not returned for analysis.The lot history record (lhr) for this product could not be reviewed and a similar incident query could not be performed because the lot number was not reported.It should be noted that the rx herculink elite renal and biliary stent system instructions for use (ifu) states: the rx herculink elite renal stent system is indicated for use in patients with atherosclerotic disease of the renal arteries following sub-optimal percutaneous transluminal renal angioplasty of a de novo or restenotic atherosclerotic lesion located within 10 mm of the renal ostium.In this case, it could not be determined if the off-label use caused or contributed to the reported difficulty.It may be possible that the balloon was inflated too quickly resulting in uneven stent expansion or stent slippage relative to balloon; however, this could not be confirmed.The additional therapy/non-surgical treatment was due to case related circumstances.The investigation was unable to determine a cause for the reported difficulty.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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