lithotriptor

/ˈlɪθəˌtrɪptər/
noun
  1. A medical device that uses shock waves to break up kidney stones or gallstones into small pieces so they can pass out of the body.
    • After the procedure with the lithotriptor, the patient passed the stone fragments naturally.
    • The doctor used a lithotriptor to break up the patient's kidney stone without surgery.
    • Modern lithotriptors are much more precise and cause less discomfort than older models.