Fig. 2

A The stent falls off (white arrow). B The second stent is released successfully (red arrow), and the first stent is invaginated on the guide catheter (white arrow). C The catcher captures the hardened guide wire. D The left intraventricular detached stent (white arrow) and the JR4.0 catheter (red arrow). E The detached stent (white arrow) in the left ventricle and the JR4.0 catheter (red arrow). F The detached stent remains at the intersection of the iliac artery (red arrow). c Schematic diagram of stent detachment. d Schematic diagram of the retrieval of the detached stent