Views: 1 Author: Site Editor Publish Time: 2023-09-24 Origin: Site
There are several types of stents that can be placed in the bile ducts or pancreatic duct during endoscopic retrograde cholangiopancreatography (ERCP):
- Plastic stents: These are the most commonly used stents. They are made of flexible plastic and come in various diameters. Plastic stents are less expensive but may need to be replaced every 3-6 months.
- Metal stents: These stents are made from metals like stainless steel or nitinol. They have a larger inner diameter than plastic stents so allow better bile flow. Metal stents may remain in place for 6-12 months.
- Covered metal stents: These stents have a covering or membrane on the inside to prevent tissue ingrowth which could clog the stent. This extends their lifespan to up to 2 years.
- Drug-eluting stents: These plastic or metal stents are coated with drugs that help prevent inflammation, bacterial growth, and clogging of the stent.
- Biodegradable stents: These temporary stents are made of materials that dissolve over time (3-6 months). This avoids a second procedure to remove the stent.
- Y-shaped stents: These have flared ends and multiple branches to allow drainage from both the left and right hepatic ducts.
The type of stent selected depends on the patient's condition, expected time frame for drainage, and bile duct anatomy. The diameter and length are also chosen specifically for each case based on the stricture location and size.
