If you do not have DSL it may take about 5-10 minutes to download this animation. You could go get a snack or read the paper while it is downloading. Once downloaded you will get an idea of how this method causes the globule of urine to become a "tool" that enables the stone to pass through the ureter without damaging the inside of the passageway. 

Click Below

ANIMATION PAGE

  Jump and Bump 2003