Shock wave balloon catheter device

The embodiment of the invention provides a shock wave balloon catheter device. The shock wave balloon catheter device comprises a catheter, a balloon surrounding the periphery of the catheter in a sealed mode and at least one electrode pair arranged in the balloon. Each electrode pair comprises a first electrode and a second electrode, and the first electrodes and the second electrodes are arranged at intervals in the circumferential direction of the catheter; the device further comprises a positioning sheath which is made of an insulating material and wraps the periphery of the electrode; the positioning sheath enables partial peripheral walls or axial end surfaces of the first electrode and the second electrode to be exposed and can be in contact with liquid in the balloon; when a voltage is applied between the first electrode and the second electrode, the exposed portion of the first electrode and the exposed portion of the second electrode generate a discharge arc in the liquid. According to the embodimen