RecruitingNot ApplicableNCT07360353

Comparison Between Different Types of Flexible Ureteroscopes

A Comparative Study of Performance and Cost-effectiveness of Three Different Single-Use Flexible Ureteroscopes in the Management of Renal Stones: A Randomized Clinical Trial

Sponsor

Ain Shams University

Enrollment

180 participants

Start Date

Jan 25, 2026

Study Type

INTERVENTIONAL

Conditions

Nephrolithiasis Renal calculi

Summary

The current study aims to compare the performance of three distinct single-use digital flexible ureteroscope types in terms of cost-effectiveness, postoperative complications, operating time, and stone-free rates (SFRs).

Eligibility

Min Age: 18 YearsMax Age: 60 Years

Inclusion Criteria2

Patients aged 18 to 60 years.
Presence of renal stones measuring less than 20 millimeters (mm).

Exclusion Criteria8

Renal stones larger than 20 millimeters (mm).
Uncontrolled bleeding disorders or coagulopathies.
Active urinary tract infection.
Renal failure.
Uncontrolled diabetes mellitus, hypertension, or hepatic dysfunction.
Pregnancy.
Abnormal urinary tract anatomy or known ureteric stricture.
History of previous open ureteric surgery.

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Interventions

DEVICELithoVue™ (Boston Scientific Corporation)

Participants randomized to this arm will undergo retrograde intrarenal surgery (RIRS) for renal stone management using the LithoVue™ single-use digital flexible ureteroscope.

DEVICEWiScope® (OTU Medical Inc. (Silicon Valley, USA))

Participants randomized to this arm will undergo retrograde intrarenal surgery (RIRS) for renal stone management using the WiScope single-use digital flexible ureteroscope.

DEVICESingle-Use Ureterorenoscope (Scivita Medical Technology Co., Ltd.)

Participants randomized to this arm will undergo retrograde intrarenal surgery (RIRS) for renal stone management using the single-use digital flexible ureterorenoscope manufactured by Scivita Medical Technology Co., Ltd.