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An Investigation Into the Application of Preputial Grafts for the Reconstruction of Complex Ureteral Strictures

NCT07408050 · Status: ENROLLING_BY_INVITATION · Phase: NA · Type: INTERVENTIONAL · Enrollment: 50

Last updated 2026-08-04

No results posted yet for this study

Summary

Complex ureteral stricture refers to a ureteral lumen stenosis lesion that cannot be directly treated with the traditional end-to-end anastomosis. In recent years, its incidence has shown a gradual upward trend, and it has long been a major clinical challenge for urological surgeons. Because it is difficult to achieve tension-free anastomosis after direct resection of the strictured segment, which can easily lead to the failure of stricture repair surgery, simple ureteral stricture segment resection combined with end-to-end anastomosis is generally not recommended for the treatment of such diseases.

In general, clinicians need to select alternative materials for ureteral reconstruction, such as Boari flap, appendix, intestinal tract, and oral mucosa, to achieve the surgical effect of tension-free anastomosis. However, in some complex clinical cases, if Boari flap, appendix, intestinal tract or oral mucosa cannot be used for surgery, or if patients refuse to accept oral mucosa, intestinal mucosa and other tissues for ureteral repair, are there any other alternative schemes with high safety and minimal invasiveness available for ureteral reconstruction in clinical practice? Thus, it is of great clinical significance to develop safe, effective and innovative surgical techniques for ureteral reconstruction. Circumcision is a surgical procedure with a long history and wide application, and the prepuce removed during the operation is usually treated as medical waste. Our research team has previously performed a large number of surgeries using prepuce to repair the urethra. Clinical results have shown that free prepuce has the advantages of easy survival, convenient harvesting and minimal invasiveness, making it an ideal graft material for urinary tract repair and reconstruction.

At present, there have been case reports on ureteral reconstruction using prepuce abroad. Based on our team's previous research experience in the fields of urethral reconstruction and ureteral reconstruction, the investigators intend to carry out relevant research on ureteral reconstruction with free preputial grafts, aiming to obtain convincing clinical data and provide a more minimally invasive and safer new treatment option for the repair and reconstruction of complex ureteral strictures.

Conditions

  • Ureteral Stenosis

Interventions

PROCEDURE

Preputial graft ureteroplasty

Reconstruction of complex ureteral stenosis using preputial graft

Sponsors & Collaborators

  • Ruibao chen

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-08-03
Primary Completion
2031-01-01
Completion
2032-01-01

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07408050 on ClinicalTrials.gov