An assembly of devices designed for use with an intracorporeal lithotripsy system to evacuate, by suction, the irrigation fluid-containing fragments of urinary calculi from the kidneys, ureters, and bladder during lithotripsy. It typically consists of a pneumatically-powered pump that creates suction via the venturi mechanism, a vacuum gauge, vacuum control knob, a compressed air connector, tubing, a moisture filter, and possibly a microbial filter. The vacuum created by the pump is applied to the body through the tubing and an inserted probe, for the removal of the calculi in a stone catcher and the fluid in a collection container.