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New vacuum tool could revolutionize kidney stone surgery

NCT ID NCT06938113

Disease control Sponsor: Peking University First Hospital 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study tests a flexible scope with a vacuum attachment to remove large kidney stones (2-3 cm). The goal is to see if it clears stones better and lowers risks compared to standard methods. About 115 adults with normal kidney anatomy will take part.

What this could mean

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

Active substance
flexible ureteroscope with vacuum-assisted sheath
What this could lead to
If successful, this could offer a more effective and safer way to remove large kidney stones, reducing the need for additional procedures.
What could go wrong
This is a small, early-stage trial with only 115 participants, so results may not apply to everyone. The procedure still carries risks like infection or injury.

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 115 people

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

Started

Jul 2025

Expected to finish

Jan 2026

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

Age range from 18 to 75 years old; Patients undergoing flexible ureteroscopy lithotripsy in our hospital due to high-load kidney stones(2-3cm); All enrolled patients received informed consent and signed informed consent before operation.

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. Patients diagnosed with kidney stones with a diameter of 2-3cm by computed tomography; 2. Age \> 18 years old; 3. The anatomical structure of the kidney is normal, without deformity; 4. No serious heart and lung disease (ASA grade I-III) 5. Through preoperative communication, patients and their family members indicated that they were fully aware of the condition and the choice of treatment plan, and signed informed consent and informed choice notification; Exclusion Criteria: 1. Simultaneous operation is required for ipsilateral ureteral calculi or contralateral upper or lower urinary calculi. 2. Severe coagulation dysfunction; 3. Patients who do not sign informed consent and cannot cooperate with the study;

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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 calculi

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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

  • Peking University First Hospital

    Beijing, Beijing Municipality, 100034, China

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