Ureteral replacement with a new synthetic material: Gore-Tex

Area of Science:

• Urology
• Biomaterials Science
• Surgical Innovation

Background:

• Current ureteral replacement relies on autologous tissues like intestine or bladder, which have limitations.
• The development of synthetic substitutes is crucial for improving ureteral reconstruction outcomes.
• Expanded polytetrafluoroethylene (Gore-Tex) has demonstrated success in vascular surgery due to its biocompatibility.

Purpose of the Study:

• To evaluate the efficacy and safety of Gore-Tex as a synthetic ureteral substitute in a canine model.
• To assess the feasibility of using Gore-Tex for bridging ureteral defects.
• To investigate the outcomes of Gore-Tex ureteral anastomoses.

Main Methods:

• Segmental ureteral replacement with 5-mm tubed Gore-Tex was performed in adult mongrel dogs.
• Both segmental and subtotal ureteral replacements were conducted.
• Anastomoses were created using running 6-0 Prolene sutures, with routine perioperative antibiotic administration.

Main Results:

• Gore-Tex was well-tolerated as an interposition graft for bridging ureteral gaps.
• Anastomoses between Gore-Tex and the bladder were unsuccessful, leading to infection and prosthesis migration.
• The synthetic material demonstrated good integration with ureteral tissue in the absence of bladder connection.

Conclusions:

• Gore-Tex can serve as a viable synthetic ureteral substitute for bridging ureteral defects under specific conditions.
• Further research is needed to address the challenges associated with Gore-Tex to bladder anastomoses.
• Gore-Tex represents a potential addition to the urologic armamentarium for specific ureteral reconstruction scenarios.