New large-diameter balloon-equipped sphincterotome for removal of large bile duct stones (with videos)

BackgroundRecently, endoscopic biliary sphincterotomy (EBS) followed by large-diameter balloon dilation has been used for the removal of large bile duct stones. A limitation is the need for 2 accessories: a sphincterotome and a dilating balloon.ObjectiveTo evaluate a new device, a combination of a large-diameter dilating balloon and sphincterotome (LDDBS).DesignRetrospective study.SettingUniversity hospital.PatientsEighteen patients with large bile duct stones.InterventionsAfter performing EBS by using the LDDBS, the catheter was then advanced into the bile duct and balloon dilation was performed by gradual inflation with diluted contrast medium under endoscopic and fluoroscopic guidance until it reached a diameter adequate to allow stone removal.Main Outcome MeasurementsFeasibility and efficacy of stone removal by using an LDDBS.ResultsTechnical success of large-diameter balloon dilation after EBS was achieved in all cases. Bile duct clearance was accomplished in 94% (17/18) of cases in the first session. Bile duct clearance was eventually completed in all patients. Mechanical lithotripsy was required in 4 patients (22%). There were no major intraprocedural or postprocedural complications.LimitationsSingle-institution study, small sample size.ConclusionsThe prototype LDDBS is safe and effective to facilitate the removal of large bile duct stones by using one accessory.