Investigation evaluation: our laboratory evaluation of the product said to be involved confirmed the report.The breakthrough channel has been utilized from the zip port to approximately 114 cm proximal to the zip port.The outer edges of the channel are rippled.A functional test was conducted to test the remainder of the zip channel.During our laboratory analysis, the sphincterotome was prepped and was advanced through a duodenoscope that is placed in a simulated biliary position.The duodenoscope has an accessory channel that is 4.2 mm in diameter (model number olympus tjf-160vr).The remaining portion of the breakthrough channel was utilized the full length of the channel during the functional evaluation.Resistance was encountered during this portion of the functional evaluation therefore confirming difficulty with zip exchange.After the exchange, the outer edges of the channel were noted to be rippled and torn.A visual examination of the wire guide showed a kink approximately 50.5 cm from the distal end.A 25 ml terumo syringe was included in the return.The syringe was attached to the contrast port with liquid still present in it.No portion of the sphincterotome device is missing.A discrepancy or anomaly that could have contributed to the reported event was not observed during our laboratory analysis of the returned product.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 corrective action has been initiated to reduce occurrences of stripping difficulty for omni sphincterotomes.The product said to be involved is included in the scope of the corrective actions.Prior to distribution, all fusion omni-tome pre-loaded sphincterotomes are subjected to a visual inspection and functional test 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 actions: a corrective action has been initiated in an effort to reduce occurrences of this nature.This product was manufactured prior to implementation of this corrective action.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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