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Can suction make kidney stone surgery safer?

NCT ID NCT07492147

Knowledge-focused Sponsor: Lanzhou University Second Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether using a special suction device during kidney stone surgery can reduce how much irrigation fluid gets absorbed into the body and lower the risk of infections. Researchers will compare 400 adults who have surgery with or without the suction sheath. The goal is to see if this simple change can make the procedure safer.

What this could mean

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

Active substance
negative pressure suction sheath
What this could lead to
If it works, this could lead to safer kidney stone surgery with fewer infections and shorter hospital stays.
What could go wrong
This is an observational study, not a randomized trial, so results may be less reliable. The suction device might not reduce infections as hoped.

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.

Participants

About 400 people

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

Started

Mar 2026

Expected to finish

Jul 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.

Who is studied

Adult patients (typically aged 18 years and older) diagnosed with renal and/or upper ureteral stones who are scheduled to undergo retrograde intrarenal surgery (RIRS) at the urology department.

Ages

18 years and older

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: * Patients aged 18 years and older with kidney stones who meet the surgical indications for RIRS; * Patients who have provided informed consent. Exclusion Criteria: * Concurrent combination with other surgical procedures, such as percutaneous nephrolithotomy (PCNL); * Patients with malignancies, urinary tuberculosis, immune system diseases, or hyperthyroidism; * Congenital renal anomalies, such as polycystic kidney disease or horseshoe kidney; * Presence of untreated urinary tract infections; * Inability to tolerate surgery due to severe cardiopulmonary dysfunction, hepatic or renal insufficiency, or coagulation abnormalities.

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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

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

  • Lanzhou University Second Hospital

    RECRUITING

    Lanzhou, Gansu, 730030, China

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