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Investigation evaluation: our evaluation of the product said to be involved confirmed the report.At approximately 18.8 cm - 22.2 cm from the distal end, the wire guide coating has folded over onto itself at least once.18.8 cm - 19.1 cm from the distal end, this folded over section of coating has bunched up like an accordion.22.2 cm - 27.3 cm from the distal end is a section of bare core wire.There are some small kinks and rough surfaces felt through the length of the wire guide.A thin layer of unknown white substance has adhered to the wire guide throughout it's length.Due to the condition of the returned device, it cannot be determined if any sections of the coating are missing.A product-specific discrepancy that could have caused or contributed to this observation was not observed during our laboratory analysis.The device history record for the lot number said to be involved was reviewed.A discrepancy or anomaly was not observed with the product that was released for distribution.Investigation conclusion: a definitive cause for this observation could not be determined because the actual use conditions could not be duplicated in the laboratory setting.Due to a variety of clinical conditions such as patient anatomy, endoscope position or progression of disease state, we could not reproduce the actual conditions of product usage during our laboratory analysis.This limits our ability to conclusively determine a cause.The instructions for use for this product line instruct the user: "prior to removing wire guide from holder, flush with 30 cc of sterile water." this activity will aid in optimal performance of the wire guide.Failure to flush the wire guide can result in damage to the wire guide.The instructions for use for this product line instruct the user: "flush endoscope accessory channel and/or lumen of device with sterile water, then insert wire guide floppy end first.Note: for best results, this wire guide should be kept wet, if applicable." this activity will aid in optimal performance of the wire guide.Failure to flush the endoscope channel can result in damage to the wire guide.If additional pressure is applied to the wire guide and/or accessory device(s) while moving the wire guide inside the accessory device(s), this could contribute to wire guide coating damage.Prior to distribution, all cook acrobat calibrated tip wire guides are subjected to a visual inspection to ensure device integrity.A review of the device history record confirmed that the lot said to be involved met all manufacturing requirements prior to shipment.Corrective action: corrective action is not warranted at this time based on the quality engineering risk assessment.Quality assurance will continue to monitor for complaint trends and reassess the risk assessment results as post market feedback continues to become available.
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During an endoscopic retrograde cholangiopancreatography (ercp), the physician used a cook acrobat calibrated tip wire guide.During the exchange, the operator felt obvious resistance and checked from the endoscope and found that the covering [of the wire guide] had peeled and detached.The device was evaluated on 04/12/2018 and it was observed that the wire guide coating had folded over itself exposing the bare wire.
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