Shock wave catheter, electrode connection structure and control system

A shock wave catheter, comprising a balloon and a catheter body, wherein the balloon is connected to a distal end of the catheter body, the balloon provided thereon with at least one pressure sensor, the pressure sensor configured for detecting pressures at different locations on a surface of the balloon, which represent a pressure profile, and

• the catheter body comprising an outer tube and an inner tube the outer tube disposed over the inner tube, the catheter body defining a fluid passage configured for input and output of a medium into and from the balloon,
• the inner tube provided thereon with a shock wave source, the shock wave source configured for delivering pulses,
• wherein the pressure sensor transmits the pressures that it detects on the surface of the balloon to a control system the control system compares a change indicated by the pressures with a first predetermined threshold, if the change is greater than the first predetermined threshold, the control system deactivates the shock wave source and the shock wave source stops operating;
• when the pressure values that the control system receives are higher than a first predetermined pressure value, the control system controls the shock wave source to deliver pulses with less energy;
• when the pressure values are lower than a second predetermined pressure value, the control system controls the shock wave source to deliver pulses with more energy;
• when the pressure values are lower than a third predetermined pressure value, the control system generates an error report signal and stops output of pulses, the third predetermined pressure value is lower than the second predetermined pressure value;
• in response to every delivery of shock waves from the shock wave source, the pressure sensor collects a plurality of associated pressure values;
• the control system analyzes the plurality of pressure values, calculates changes indicated by pressure values associated with pulses delivered at a time interval spanning a predetermined number of times of delivery, and if the changes indicated by the pressure values are lower than a lower limit of a range, the control system adjusts an energy input with gradient;
• and
• the shock wave source comprises a plurality of sets of electrodes, which are wired in parallel and connected to a high-voltage generator.