Comparing different flexible ureteroscopes for treating kidney stones

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the efficiency, effectiveness, and safety of flexible ureteroscope (fURS) lithotripsy for patients with upper urinary tract stones. It specifically compares different diameters of fURS with similar retrograde endoscope diameters (RESDs) to determine the best approach for treatment. Patients aged 18 to 80 with kidney stones less than 3 cm in diameter will be included, while those with certain medical conditions or prior surgeries will be excluded. The study aims to provide insights into optimizing treatment for urolithiasis.

Why it matters

Who can join: the full rules

Inclusion Criteria:

\- 1.Patients with kidney stones or upper ureteral stones with a cumulative diameter of less than 3 cm are selected for ureteral soft lens holmium laser lithotripsy.

2.Age 18 to 80 years old, gender unlimited. 3.The subjects have no mental illness or language dysfunction, can understand the situation of the study and can sign informed consent.

Exclusion Criteria:

* 1.Patients with a history of ureteral stenosis or who have undergone open or laparoscopic ureteral or renal lithotomy.

  2.Patients with fever one week before surgery 3.Pregnant women and menstruating patients. 4.Patients with combined systemic disease or inability to tolerate anesthesia. 5.Patients undergoing simultaneous surgery for bilateral upper urinary tract stones.

  6.Patients with ureteral stent indwelling before surgery. 7.In patients with severe hydronephrosis, the separation of the renal collecting system is greater than 4 cm.

  8.Patients with renal anatomic malformations such as polycystic kidney, horseshoe kidney, and ectopic kidney.

Where it's running

• The First Affiliated Hospital of Ningbo University
  Ningbo, Zhejiang, China Recruiting

Study contacts

• Study coordinator: Li Fang
• Email: fanyruo@126.com
• Phone: +86-13586681743

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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• Aspiration-enabled vs conventional ureteral access sheath for RIRS in kidney stone patients

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.