Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Break Wave extracorporeal lithotripsy to break kidney stones

Official title: A Study of the SonoMotion Break Wave(TM) System for the Comminution of Urinary Tract Stones

Run by SonoMotion · NCT03811171 · Data updated 2026-11-12

This trial will try the Break Wave machine to break upper urinary tract stones up to 20 mm (10 mm in the lower pole) in adults as an outpatient procedure.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment70 (estimated)
SponsorSonoMotion
Industry-sponsored
Locations6 sites (San Diego, California and 5 other locations)
StatusRecruiting
StartedAugust 20, 2019
Main results expectedJanuary 30, 2027
Study endsMarch 30, 2027
Registry record updatedJuly 29, 2025
Trial IDNCT03811171 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with at least one CT-visible upper urinary tract stone that meets AUA SWL size limits (≤10 mm for lower pole stones, ≤20 mm elsewhere), who can undergo outpatient treatment and complete required follow-up including post-procedure CT.

Probably not a fit

Patients with untreated urinary infection, uncorrected bleeding disorders, pregnancy, distal obstruction, stones not visible or positionable for the device, or those unwilling to stop anticoagulants or comply with follow-up are unlikely to benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a prospective, open-label, multi-center, single-arm first-in-human study enrolling up to 30 subjects to test the SonoMotion Break Wave extracorporeal lithotripter. Procedures are performed in hospital outpatient or non-surgical clinic/office settings under varying anesthesia from none to general anesthesia. Safety will be tracked by patient-reported adverse events, unplanned ED or clinic visits, and any need for additional interventions. Stone fragmentation and passage will be measured by patient reports and comparison of pre- and post-procedure CT images.

Why it matters

Potential benefit: If successful, it could offer a noninvasive outpatient option to fragment certain kidney stones with potentially faster recovery and less need for invasive procedures.

How similar studies have gone: Traditional shock wave lithotripsy has a long record of success for appropriately sized stones, but this is the first-in-human trial of the Break Wave device specifically.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Individuals presenting with at least one kidney stone apparent on CT.
* Stones must be within the upper urinary tract.
* Stones are indicated for SWL treatment per the American Urology Association (AUA) 2016 guidelines.8
* Stones must be measured under CT to be within the AUA 2016 SWL guidelines (i.e. ≤ 10 mm for lower pole stones and ≤ 20 mm for non-lower pole stones).

Exclusion Criteria:

* Acute untreated urinary tract infection or urosepsis.
* Uncorrected bleeding disorders or coagulopathies.
* Pregnancy.
* Uncorrected obstruction distal to the stone.
* Patients receiving anticoagulants and who are unable or not willing to cease the medication for the Break Wave procedure.
* Stones that are not echogenically visible or cannot be positioned within the Break Wave therapy focus.
* Individuals belonging to a vulnerable group (pregnant, mentally disabled, prisoner, etc.).
* Patients unwilling to comply with the follow-up protocol, including post-procedure CT.
* Individuals under 18 years of age.
* Anatomic presentations preventing adequate positioning or delivery of the Break Wave pulse.
* Calcified abdominal aortic aneurysms or calcified renal artery aneurysms.
* Solitary kidney
* Comorbidity risks which, in at the discretion of the physician, would make the patient a poor candidate for the Break Wave procedure, such as anatomical anomalies that may not be conducive to adequate stone fragment passage.

Where it's running

  • Vancouver General Hospital Stone Centre
    Vancouver, British Columbia, Canada
    Recruiting
  • University of California San Diego Health
    San Diego, California, United States
    Completed
  • University of California, San Francisco
    San Francisco, California, United States
    Completed
  • University of Washington Medical Center
    Seattle, Washington, United States
    Completed
  • University of Alberta, Division of Urology
    Edmonton, Alberta, Canada
    Completed
  • St. Michael's Unity Health Toronto
    Toronto, Ontario, Canada
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.