Drug-eluting fully covered self-expanding metal stent for dissolution of bile duct stones in vitro

Figure 3 Drug release behavior and stone-dissolving efficacy of different stents. A: Drug release curves of three types of drug-eluting stents and stents without drug load; B: Stone mass loss curves of three types of drug-eluting stents and stents without drug load in still buffer; C: Stone mass loss curves of three types of drug-eluting stents and stents without drug load in flowing bile. Naked fully covered self-expanding metal stent vs Stent III, ^aP < 0.05, ^bP < 0.01; Stent I vs Stent III, ^cP < 0.05, ^dP < 0.01; Stent II vs Stent III, ^eP < 0.05, ^fP < 0.01.