Endoscopy Supplies

Interventional Radiology COMVI™ Biliary Stent

Category: Interventional Biliary Stents

interventional radiology comvi covered

A cutting-edge triple-stratum, flexible cellular stent offers the perfect blend of radial and axial strength, ensuring unobstructed lumen integrity even in complex anatomical configurations. You can choose between a completely enclosed design or open-ended options. Crafted from a bio-friendly PTFE membrane tube, this innovation securely embraces an intricate interplay of inner and outer mesh structures.

Product Description

  • Unfixed cell structure enables stent to conform to tortuous anatomy
  • PTFE membrane prevents the risk of tissue ingrowth
  • Outer wire mesh reduces the risk of migration
  • Minimum foreshortening for accurate placement

Indication: for malignant biliary strictures.

Radiopaque markers: 4 (four) at each end

Clinical Reference

  • Prospective evaluation of the partially covered nitinol “ComVi” stent for malignant non hilar biliary obstruction
    by Vincenzo Perri et al [Dig Liver Dis. 2013 Apr;45(4):305-9]
  • Management of distal malignant biliary obstruction with the ComVi stent, a new covered metallic stent
    by Hiroyuki Isayama et al [Surg Endosc. 2010 Jan;24(1):131-7]
  • Measurement of radial and axial forces of biliary self-expandable metallic stents
    by Hiroyuki Isayama, MD, PhD et al [Gastrointest Endosc. 2009 Jul;70(1):37-44]


Key Resources

Product Information



The COMVI™ Biliary Stent in Interventional Radiology

Medical technology keeps getting better, and one of the helpful devices in healthcare is the COMVI™ Biliary Stent. This stent is used in interventional radiology to help people with problems in their bile ducts.

interventional radiology stent placement

What are Bile Ducts?

Bile ducts are small tubes in your body that carry bile, a fluid made by your liver, to your small intestine. Bile helps you digest fats from the food you eat. Sometimes, these ducts can get blocked, causing serious health problems.

What is the COMVI™ Biliary Stent?

The COMVI™ Biliary Stent is a small, flexible tube made of metal. Doctors use it to open up blocked or narrowed bile ducts. This helps bile flow properly from the liver to the small intestine.

How Does it Work?

  1. Interventional Radiology: This is a type of medical procedure that uses imaging techniques like X-rays to guide the placement of the stent inside the body.
  2. Self-Expandable Design: The stent is made from a special metal that can expand on its own. When placed in the bile duct, it expands to the right size, opening up the blocked area.
  3. Flexible and Strong: The stent is both flexible and strong, allowing it to fit well in the bile ducts and stay in place without causing damage.

Why Do People Need This Stent?

People need the COMVI™ Biliary Stent for several reasons, including:

  • Gallstones: These are hard particles that can block the bile ducts.
  • Tumors: Cancerous growths can block the bile ducts, making it difficult for bile to flow.
  • Scarring: Previous surgeries or infections can cause scarring that narrows the bile ducts.

Benefits of the COMVI™ Biliary Stent

  1. Improved Bile Flow: The main benefit is that it helps bile flow properly, improving digestion and overall health.
  2. Minimally Invasive: The stent can be placed using a procedure that doesn’t require major surgery, which means less pain and quicker recovery for patients.
  3. Long-Lasting: The COMVI™ Biliary Stent is designed to stay in place and work well for a long time, reducing the need for frequent replacements.


The COMVI™ Biliary Stent is an important medical device that helps people with blocked or narrowed bile ducts. Its self-expanding design and strong, flexible material make it an effective and reliable solution for many patients.

This stent is making a big difference in the lives of people who need help with their bile ducts, improving their digestion and overall health.