lithotriptor

from The Collaborative International Dictionary of English v.0.48

Lithotriptor \Lith"o*trip`tor\ (l[i^]th"[-o]*tr[i^]p`t[~e]r), n.
   (Surg.)
   An instrument for triturating the stone in the bladder; a
   lithotrite.
   [1913 Webster] Lithotrite