According to an exemplary embodiment of the present disclosure, a shock wave generator for generating a shock wave to focus on the focus area; And a shock wave transmitting unit disposed detachably in front of the shock wave generating unit and transmitting the generated shock wave to a focus area. It includes, The shock wave transmission unit: Core portion formed of a medium that is easy to transfer the shock wave; And an outer surface portion which keeps the core portion in a predetermined shape and accommodates the core portion therein; It may include, an extracorporeal treatment device.
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