Double-J Ureteral Stent (Double Pigtail Stent)

Product Overview

The Double-J Ureteral Stent is specially designed for the diagnosis and treatment of upper urinary tract diseases. With a hollow tubular structure and standard J-shaped curls at both ends, it realizes self-anchoring without additional fixation devices. Made of medical polyurethane (TPU) or medical-grade silicone, the tube body is soft and elastic, conforming to the natural curvature of the ureter and minimizing irritation to urinary tract mucosa. Continuous length markings on the stent and full-length radiopaque design enable accurate depth control during placement and convenient post-operative examination. Dense drainage side holes on the side wall form a multi-channel drainage system, effectively reducing the risk of lumen blockage and ensuring bidirectional urine drainage. An optional extraction string at the distal end simplifies post-operative removal. The surface hydrophilic coating lowers friction and adapts to multiple surgical approaches including endoscopy and retrograde insertion. Sterilized by ethylene oxide, this disposable sterile device provides a full range of specifications for adults and children, catering to complex clinical scenarios such as calculi surgery, ureteral stricture, tumor compression and hydronephrosis.

Key Highlights

• Double-J Self-anchoring Design: Pigtail curls at both ends anchor the stent in renal pelvis and bladder, effectively preventing migration and dislodgement for reliable indwelling performance.
• Full-length Radiopaque Body: Radiopaque filler inside the tube ensures clear fluoroscopic visualization for accurate intra-operative positioning and convenient follow-up.
• Multi-side Hole for Efficient Drainage: Dense drainage holes enable multi-channel urine drainage, reduce lumen occlusion risk and facilitate residual stone clearance.
• High-flexibility Medical Material: Polyurethane or silicone features superior biocompatibility, soft texture and kink resistance, conforming to ureter anatomy and minimizing mucosal injury.
• Long-acting Hydrophilic Coating: The hydrophilic lubricious layer reduces friction during insertion and removal, improving surgical efficiency and patient tolerance.
• Accurate Length Markings: Centimeter-scale markings on the tube help surgeons control insertion depth precisely for patients of different body types.
• Optional Extraction String: Models with extraction string allow non-invasive and rapid removal to simplify post-operative procedures.
• Anti-incrustation & Anti-aging Performance: The material resists crystal deposition and aging, suitable for routine clinical indwelling cycles.

Technical Specifications & Construction

The product includes three main series: standard type, hydrophilic coated type and extraction string type with standard J-shaped curls at both ends. The full tube is radiopaque with continuous length markings. Sizes are measured in French (Fr), covering full specifications for pediatric and adult patients with various lengths to adapt to different ureter lengths. The entire device is sterilized with ethylene oxide, packed in individual sterile pouch and intended for single use.

Typical Clinical Applications

As a routine fundamental device in urology, this stent is widely used for diagnosis and treatment of upper urinary tract diseases:

• Urine drainage and ureteral support after ureteroscopy, percutaneous nephrolithotomy and extracorporeal shock wave lithotripsy for renal and ureteral calculi
• Prevent recurrent stricture and anastomotic leakage after ureteral stricture repair and ureteral anastomosis
• Relieve hydronephrosis and urinary obstruction caused by external compression from ureteral or pelvic tumors
• Pre-stenting before complex stone surgery to passively dilate ureter for secondary procedures
• Temporary support and urine drainage for ureteral injury and iatrogenic urinary tract damage
• Pre-placement before major pelvic and abdominal surgery to protect ureter and reduce injury risk
• Emergency management of renal colic to relieve acute ureteral obstruction and protect renal function

Quality Assurance & Compliance

Patient safety and clinical efficacy are our top priorities. The Double-J Ureteral Stent is manufactured in Class 10,000 cleanrooms in strict accordance with the ISO 13485 medical device quality management system. Every batch undergoes rigorous tests including visual inspection, dimensional verification, bending fatigue test, coating adhesion, radiopacity definition, biocompatibility and sterility test to guarantee stable flexibility, drainage performance and indwelling safety. The product complies with domestic standards as well as international medical device regulations such as CE (EU) and FDA (USA). Complete registration and compliance documents are available to meet clinical access requirements of hospitals and clinics worldwide.

Ordering Information

We supply a full range of Double-J Ureteral Stents to hospitals, specialized urology clinics and medical device distributors worldwide. Combined-spec bulk orders are supported. Customized sizes, surface treatments, packaging solutions and OEM/ODM services are available upon request. Please contact our sales team for wholesale pricing, shipping terms, lead time, product registration certificates and regional compliance documents.

Frequently Asked Questions (FAQ)