Actively Recruiting

Phase Not Applicable
Age: 18Years +
All Genders
Healthy Volunteers
ID04796792

Ultrasound Technology to Fragment and Reposition Urinary Stones

Led by University of Washington · Updated on 2025-12-09

140

Participants Needed

3

Research Sites

21 weeks

Total Duration

On this page

Sponsors

U

University of Washington

Lead Sponsor

I

Indiana University

Collaborating Sponsor

AI-Summary

What this Trial Is About

Researchers are evaluating the clinical feasibility of using ultrasound technologies to help break and reposition urinary stones without anesthesia. This study is prospective, open-label, and conducted across multiple centers. It includes people with kidney stones and aims to assess the safety and effectiveness of these ultrasound methods in facilitating stone passage. The study involves several phases: an initial feasibility phase with 20 subjects, a randomized control trial phase with 100 subjects divided equally into treatment and control groups, and a feasibility phase focusing on individuals with spinal cord injury. The investigational treatment uses two ultrasound technologies called Burst Wave Lithotripsy and Ultrasonic Propulsion, which noninvasively fragment and move stones within the kidney and ureter. Treatments last up to 30 minutes per session, with possible repeat sessions after 21 days or on the opposite kidney side after imaging. Participants will undergo ultrasound treatments and follow-up imaging to monitor stone fragmentation and movement. Safety is monitored by tracking healthcare visits and adverse events up to 14 months after the procedure. Effectiveness is measured by stone size reduction, residual stone volume, need for further stone management, and patient-reported quality of life. The study includes ongoing monitoring and assessments over several months, ensuring comprehensive evaluation of the investigational technologies.

CONDITIONS

Brief Title

Ultrasound to Facilitate Stone Passage

Who Can Participate

Age: 18Years +
All Genders
Healthy Volunteers

Eligibility Criteria

Eligible

You may qualify if you...

  • Individuals presenting with at least one kidney stone
  • Stone with maximum dimension greater than 2 mm and less than or equal to 7 mm as determined by clinical imaging
  • Individuals with spinal cord injury (Phase 2b only)
Not Eligible

You will not qualify if you...

  • Individuals under 18 years of age
  • Individuals who are pregnant or trying to get pregnant
  • Prisoners
  • Individuals with cognitive impairment limiting consent or participation comprehension
  • Individuals unable to read or understand English
  • Individuals unable or unwilling to participate in follow-up activities
  • Individuals who cannot be positioned for ultrasound imaging
  • Individuals with uncorrected bleeding disorders or coagulopathies
  • Individuals receiving anticoagulants and unable or unwilling to temporarily stop them for the procedure
  • Individuals with calcified abdominal aortic aneurysm or calcified renal artery aneurysm on the same side as the targeted stone
  • Individuals with a solitary kidney
  • Individuals with uncorrected urinary tract obstruction
  • Individuals with untreated infection
  • Individuals with comorbidities making them poor candidates at physician discretion
  • Individuals who have had two previous investigational procedures for the same stone
  • Individuals who had the investigational procedure within the last 21 days or have unresolved adverse events from it

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

1 visit (in-person)

Implementation

Duration - Single session with possible additional sessions after 21 days

Participants receive the investigational ultrasound technologies to fragment and reposition urinary stones without anesthesia. Up to 3 distinct stone targets may be treated in a single session, with a maximum total exposure of 30 minutes. Participants may return for additional sessions after at least 21 days and after adverse events have resolved.

1 treatment session with possible follow-up treatment visits after at least 21 days

Follow-up

Duration - Up to 14 months

Participants are monitored for safety and effectiveness outcomes including stone fragmentation, need for further stone management, and quality of life assessments up to 14 months post-procedure.

Visits scheduled up to 14 months post-procedure as needed for monitoring

Trial Site Locations

Total: 3 locations

1

Indiana University Health - North Hospital

Carmel, Indiana, United States, 46032

Withdrawn

2

VA Puget Sound Health Care System

Seattle, Washington, United States, 98108

Actively Recruiting

3

University of Washington

Seattle, Washington, United States, 98195

Actively Recruiting

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Research Team

M

Michael Bailey, PhD

B

Barbrina Dunmire, MS

How is the study designed?

Study Type

INTERVENTIONAL

Masking

NONE

Allocation

NON_RANDOMIZED

Model

SINGLE_GROUP

Primary Purpose

TREATMENT

Number of Arms

4

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Published Research Related To This Trial

Detection and Evaluation of Renal Injury in Burst Wave Lithotripsy Using Ultrasound and Magnetic Resonance Imaging.

Philip C May, Wayne Kreider, Adam D Maxwell...

https://pubmed.ncbi.nlm.nih.gov/28521550

Randomized Controlled Trial of Ultrasonic Propulsion-Facilitated Clearance of Residual Kidney Stone Fragments vs Observation.

Mathew D Sorensen, Barbrina Dunmire, Jeff Thiel...

https://pubmed.ncbi.nlm.nih.gov/39146526