抄録
The possibility of expansive splitter used in general industry for the application to lithotripsy was evaluated experimentally. The result were as follows,
1) Expansive stress generated by expansive splitter was enough to cause all urinary stones to crack.
2) Urinary caluculus 35×30×30mm in size was fragmented within 30 minutes.
3) The spherical model caluculi 30mm in diameter were fragmented in a condition that the boring size was more than one fifth of the diameter and the boring depth was more than a half of it.
The results suggested that expansive splitter could be applied clinically to fragment urinary caluculi after some improvements.
