Comparison of Lithotripsy Urolithiasis Machines

This is a single institution, prospective randomized controlled clinical trial comparing two lithotriper machines (the Storz Modulith LX-F2 and Dornier Delta III) in patients who are undergoing shockwave lithotripsy (SWL) as the primary management of their urinary stone. Patients record pain score on day of operation and post-operative day 1, and are followed for 1 month until they receive standard of care imaging at 1 month post-operatively.

Inclusion criteria

• Cleveland Clinic Foundation patients planned for elective SWL with a preoperative CT performed

• Age ≥ 18 years old
• Male and female patients
• Patients of all ethnic backgrounds
• Stone size 5-15mm
• Stone location: Renal or proximal ureter
• Stone density: < 1200 Hounsfield Units
• Skin to stone distance: < 12cm
• Primary treatment for a solitary stone (must be previously untreated)

Patients must be capable of giving informed consent and must be capable and willing to enroll and participate fully with the study.

Exclusion criteria

• Prior treatment for specified stone

• Multiple stones on treatment side (even if only one is treated)
• Anticoagulated or history of coagulopathy
• Prior ureteral stent placement
• Technical problems/impossibility of localizing the stone on the day of intervention

Patients unable to give informed consent or unwilling to enroll or participate in the study will be excluded.