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New scope aims to bust kidney stones in one go

NCT ID NCT07071948

Disease control Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This trial tests a new device called VISOR for removing kidney stones. It combines stone breaking, suction, and pressure control in one tool. About 20 adults with 1-3 cm stones will undergo surgery with VISOR. The goal is to see if it clears stones safely and effectively, with a CT scan within 24 hours and a follow-up at one month.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Multifunctional Integrated Flexible Ureteroscope (VISOR)
What this could lead to
If successful, this device could make kidney stone surgery safer and more effective, reducing the need for repeat procedures.
What could go wrong
This is a small, early-stage trial with only 20 participants. The device may not work as well in larger groups, and there are risks like infection or injury during surgery.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 20 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2025

Expected to finish

Feb 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Patients with upper urinary tract calculi, where the maximum diameter of a single calculus or the cumulative diameter of multiple calculi is 1-3 cm 2. Patients who choose to undergo "flexible ureteroscopic holmium laser lithotripsy" 3. Aged 18-80 years, regardless of gender 4. Subjects without mental illness or language dysfunction, who can understand the details of this study and sign the informed consent form Exclusion Criteria: 1. Patients with ureteral stricture or a history of ureteral stricture 2. Patients with a history of open renal and/or ureteral surgery or laparoscopic surgery 3. Fever (body temperature ≥ 38℃) due to urinary tract infection or other reasons within one week before surgery 4. Pregnant women, lactating women, or women who are in the menstrual period 5. ASA classification \> Grade 3: patients with severe systemic diseases, heart diseases, pulmonary insufficiency, and failure of important organ functions, etc., who cannot tolerate anesthesia or surgery 6. Patients with anatomical malformations such as polycystic kidney, horseshoe kidney, and ectopic kidney 7. Patients with abnormal coagulation function (e.g., international normalized ratio (INR) \> 1.5 or platelet count \< 80 × 10⁹/L) 8. Patients with failed sheath placement during surgery

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Conditions

The condition(s) this trial relates to.

Kidney Calculi nephrolithiasis Nephrolithiasis, Calcium Oxalate ureterolithiasis urolithiasis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Kidney stone Urolithiasis, calcium oxalate

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • 2nd Affiliated Hospital, School of Medicine, Zhejiang University

    RECRUITING

    Hangzhou, Zhejiang, 230000, China

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