The Zebra Guidewire is widely used in urology and biliary surgery due to its excellent flexibility, smooth navigation, and reliable support during minimally invasive procedures. It can assist in procedures involving percutaneous nephrolithotomy (PCNL), ureteroscopy, and choledochoscopy, as well as facilitate the placement of various catheters for drainage and therapeutic purposes.

Beyond conventional applications, the Zebra Guidewire has demonstrated valuable clinical utility in challenging urological procedures. This article introduces three special applications of Zebra Guidewire in urological surgery.

1. Application in Complex Urethral Stricture Surgery

Urethral stricture is a common condition encountered in urology. Direct vision internal urethrotomy (DVIU) is one of the commonly performed minimally invasive treatments for urethral strictures.

Generally, urethral strictures longer than 3 cm are considered complex strictures. Due to the extended length and complicated anatomy, accurately identifying and completely incising the stricture segment can be challenging. Improper manipulation may increase the risk of complications such as false passage formation, bleeding, and urinary extravasation.

Accurate identification of the urethral pathway and complete treatment of the stenotic segment are critical factors affecting surgical outcomes.

Various guidance techniques have been used during complex urethral stricture procedures, including:

• Ureteral catheter or guidewire-assisted techniques;
• Proximal urethral probe guidance;
• Flexible cystoscope light-guided methods;
• Methylene blue tracing techniques;
• Combined wire-guidance approaches.

However, these techniques may still present difficulties in cases involving long-segment urethral strictures.

Due to its hydrophilic coating, excellent flexibility, and appropriate support, the Zebra Guidewire can provide smoother navigation through complex anatomical pathways and assist surgeons in maintaining the correct urethral route during endoscopic procedures.

2. Application in Complex Iatrogenic Urethral Injuries

During procedures such as internal urethrotomy for urethral stricture or transurethral resection of the prostate (TURP), iatrogenic urethral injury and false passage formation may occasionally occur.

Although the surgical procedure may be completed successfully, the presence of a false passage can make subsequent catheter placement difficult and increase procedural challenges.

Compared with conventional ureteral catheters, the Zebra Guidewire offers:

• A thinner profile;
• A smoother surface;
• Longer working length;
• Enhanced navigational capability.

These features make catheter placement easier and help reduce the possibility of unintended entry into false passages during difficult cases.

The Zebra Guidewire provides a simple and effective guidance solution for managing complex urethral access challenges.

3. Application in Obstructed Balloon Urinary Catheter Management

In clinical practice, balloon urinary catheters may occasionally become difficult to remove due to:

• Manufacturing defects;
• Blockage of the balloon inflation channel caused by impurities in the saline solution;
• Long-term catheter placement, such as after urethral stricture surgery.

When the balloon cannot be deflated, removal of the catheter can become a challenging situation.

The Zebra Guidewire can provide an effective solution in such cases. After appropriate preparation, the guidewire can be introduced through the catheter channel to assist in puncturing the retained balloon and resolving the obstruction.

With its soft tip design and smooth surface, the Zebra Guidewire enables controlled manipulation while helping improve procedural safety and efficiency.

Conclusion

The Zebra Guidewire is not only an essential access tool for conventional endourological procedures but also provides valuable support in challenging clinical scenarios.

Through its combination of flexibility, smooth navigation, and reliable support, the Zebra Guidewire can assist urologists in managing complex urethral strictures, iatrogenic urethral injuries, and difficult urinary catheter situations.

EVT Medical continues to develop innovative minimally invasive solutions to support safer and more efficient urological procedures worldwide.