Biliary spontaneous dislodgement spiral stent for patients who underwent mechanical lithotripsy

Figure 1 Biliary spontaneous dislodgement spiral stent and its clinical application in a patient who underwent mechanical lithotripsy for large stone removal. A: the 7-cm × 7-Fr biliary spontaneous dislodgement spiral stent with 12-mm spirals; B and C: the endoscopic and fluoroscopic view of the biliary spontaneous dislodgement spiral stent, respectively, after insertion into the common bile duct.