lithotrite

The lithotrite has two blades, a “male” and a “female,” the latter fenestrated, the former solid with its surface notched.

This danger is avoided by raising the point of the lithotrite immediately after grasping the stone and before crushing.

But it is well known that they sometimes defy all lithotrite instruments, and compel us to have recourse to the knife.

Care must be taken not to catch the bladder-wall with the lithotrite.