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New kidney stone surgery could be just as effective, less invasive

NCT ID NCT07159035

Disease control Sponsor: The First Affiliated Hospital of Guangzhou Medical University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 08, 2026 · Updated 2 times

Summary

This study compares two procedures for removing 1-2 cm kidney stones from the lower part of the kidney. One method uses a thin tube with a camera through the urinary tract, while the other makes a small incision in the back. The goal is to see if the less invasive approach works just as well and helps patients recover faster. About 640 adults from multiple countries will take part.

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

640 people

The number who actually took part.

Started

Aug 2025

Finished

Jun 2026

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 75 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. Adults aged 18-75 years; 2. American Society of Anesthesiology (ASA) score 1-3; 3. Lower pole renal stones-single or multiple-with a maximal diameter of 1-2 cm confirmed by CT; 4. Ability to provide written informed consent and adhere to trial requirements. Exclusion Criteria: 1. Significant urinary tract anatomical anomalies (e.g. horseshoe kidney, ileal conduit); 2. Stones located within a calyceal diverticulum; 3. History of open nephrolithotomy or ureterolithomy (due to resultant intrarenal anatomical distortion); 4. Absolute contraindications to either FANS-f-URS or mini-PCNL, including: * Uncorrectable coagulopathy; * Active, uncontrolled urinary tract infection; * Severe cardiopulmonary disease precluding safe general anesthesia (e.g. decompensated heart failure, refractory COPD); * Pregnancy; * Inability to tolerate lithotomy or prone positioning; 5. Inability to understand or complete trial documentation.

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Conditions

The condition(s) this trial relates to.

Kidney Calculi nephrolithiasis

As listed by the trial registrant

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

Kidney stones

Contacts and locations

Locations

  • The First Affiliated Hospital of Guangzhou Medical University

    Guangzhou, Guangdong, 510230, China

More trials for these conditions

Other studies related to the condition(s) this trial covers.