Tip Bendable Suction Ureteral Access Sheath vs. Traditional Ureteral Access Sheath in Retrograde Intrarenal Stone Surgery

Summary

Nephrolithiasis is the most common chronic kidney condition and affecting approximately one in every 10-17 people in the world\[1,2\]. Flexible ureteroscopy (f-URS) has become one of the most common treatments for ureteral and renal stones with minimal complications. The development of ureteral access sheath (UAS) is a significant advance in flexible ureteroscopic management of urinary stones. The UAS has two major advantages: 1) facilitating multiple entries into the renal collecting system without causing recurrent trauma to the ureter and permit expeditious basketing of multiple stone fragments, 2) improving the irrigation with better fluid outflow, thereby reducing the renal pelvic pressure (RPP) and risk of infectious complications.

The tip bendable suction ureteral access sheath (S-UAS) is a novel UAS that has good flexibility and deformability at the tip, which can passively bend (bend \>90°) with the bending of f-URS and can connect to a vacuum suction device. Preliminary study showed that S-UAS can follow f-URS to cross the UPJ and into the renal pelvis and calices. S-UAS close to the stone can achieve complete stone-free status in RIRS. However, further clinical studies and comparisons with available techniques are required. This prospective, single-blinded, single-center, randomized control trial will evaluate the stone free rates, operative time, postoperative complications following RIRS with S-UAS. To the best of our knowledge, this is the first study to compare the clinical benefits of RIRS with S-UAS and traditional UAS.

Conditions

• Kidney Stone

Interventions

PROCEDURE

Tip bendable suction ureteral access sheath

Patient use tip bendable suction ureteral access sheath during flexible ureteroscopy to see if flexible ureteroscopy with S-UAS offers the better treatment outcomes in terms of clinical effectiveness and post-operative complications.

Sponsors & Collaborators

• Xinhua Hospital, Shanghai Jiao Tong University School of Medicine

  collaborator OTHER

• Xiangya Hospital of Central South University

  collaborator OTHER

• Xinchang County Hospital of Traditional Chinese Medicine

  collaborator UNKNOWN

• Prof. Dr. Ilhan Varank Education and Training Hospital

  collaborator UNKNOWN

• Jose R. Reyes Memorial Medical Center

  collaborator OTHER_GOV

• Guizhou Provincial People's Hospital

  collaborator OTHER

• University of Malaya

  collaborator OTHER

• The First Affiliated Hospital of Guangzhou Medical University

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2023-08-02

Primary Completion

2024-02-28

Completion

2024-06-21

Countries

• China

Study Locations