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Intraoperative Assessment of of Burst Wave Lithotripsy (BWL)

Burst Wave Lithotripsy (BWL) for the Comminution of Urinary Tract Stones: Intraoperative Evaluation of Safety and Effectiveness

Who can join

Ages 18 and older · All sexes

Inclusion Criteria:

* Individuals presenting with at least one kidney stone apparent on CT
* Individuals scheduled for clinical stone removal via ureteroscopy (URS)

Exclusion Criteria:

* Individuals under 18 years of age
* Individuals belonging to a vulnerable group (pregnant, mentally disabled, prisoner, etc.)
* Individuals with uncorrected bleeding disorders or coagulopathies
* Individuals taking a clinically significant anticoagulant dose at the time of the procedure
* Individuals with a calcified abdominal aortic aneurysm or calcified renal artery aneurysm
* Individuals with a solitary kidney
* Individuals with a comorbidity risks which, at the discretion of the physician, would make the patient a poor candidate for the BWL procedure

About the study

Burst Wave Lithotripsy (BWL) is a novel method of urinary stone fragmentation that uses multi-cycle bursts of low amplitude ultrasound to induce stone fracture. This is in contrast to traditional extracorporeal shock wave lithotripsy (SWL), which employs a brief single compression/tensile cycle of high amplitude (shock) waves to achieve stone fracture. This is a single-arm feasibility study to test the ability of BWL to comminute (fragment) stones in humans.

What is being tested

• Burst Wave Lithotripsy (device)

Sponsor: University of Washington · Participants: 40 · Started: Aug 8, 2019

Contact the study team

• Michael R Bailey, PhD, MS · Phone: 206-619-2035
• Barbrina Dunmire · Phone: 206-769-5910

Official record on ClinicalTrials.gov — NCT03873259

Locations in the U.S.

Conditions

• Kidney Stones

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.