Intrahepatic bile duct stone removal using a tapered-tip sheath system

Fig. 1 The images of the initial endoscopic retrograde cholangiopancreatography (ERCP) procedure.A cholangiography image showing a filling defect (a yellow arrowheads) on the peripheral side of the B6 branch stricture (b yellow arrowheads).c The B6 branch stricture was dilated using a 6-mm dilation balloon catheter (REN; Kaneka Co., Inc.). Fig. 2 The images of the second ERCP procedure.a A basket catheter (Medi-Globe 8-Wire Nitinol Basket; Medico Hirata Inc.) was inserted into the B6 branch.b Some stones were successfully removed using a basket catheter.c A three-layered mechanical lithotripsy basket (Xemex Crusher Catheter LBMT320; Zeon Medical) failed to pass through the stricture or angulation of the B6 branch.