During an endoscopic retrograde cholangiopancreatography (ercp) procedure, the physician used a cook acrobat¿ calibrated tip wire guide.The coating of the wire guide peeled off during the device exchange, and the device exchange could not be completed.Another one of the same devices was used to complete the procedure.A section of the device did not remain inside the patient¿s body.The patient did not require any additional procedures due to this occurrence.According to the initial reporter, the patient did not experience any adverse effects due to this occurrence.
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Initial reporter occupation: unknown.Investigation evaluation: our laboratory evaluation of the product said to be involved confirmed the report.There is wire guide coating damage near the distal end.A section of core wire was exposed approximately 26.5 cm to 32.1 cm from the distal end.A section of the coating approximately 1.3 cm long is frayed and hanging from the wire guide, and the coating is still attached at approximately 32.1 cm from the distal end.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.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.Another possible contributing factor to wire guide damage is if the wire guide lumen is not flushed prior to wire guide advancement.The instructions for use also states, "flush endoscope accessory channel and/or lumen of device with sterile water, then insert wire guide floppy end first." 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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