A shockwave system includes a shockwave transducer that has a shockwave generating portion operable to generate shockwaves and a transducer interface. The transducer interface includes a container whose outer contour is configured to directly contact an inner wall of a cavity in a patient. The container is at least partially filled with a liquid capable of transmitting the shockwaves from the shockwave generating portion to the inner wall of the cavity. The container completely surrounds the shockwave generating portion
