A Naso Biliary Drainage Catheter (NBDC) is a medical device used for temporary drainage of the biliary duct through the nasal passage. It is an effective tool for managing biliary obstructions or drainage issues, particularly useful in cases where endoscopic retrograde cholangiopancreatography (ERCP) is not feasible or has failed.

Key Features of NBDC Catheters
Design: Typically features a pigtail shape at the distal end to enhance retention within the bile duct.
Materials: Made from plastic materials, ensuring flexibility and biocompatibility.
Sizes: Available in various French sizes (5-12 Fr) and lengths (commonly 250 cm), accommodating different patient anatomies.
Components: Each set includes a nasal transfer tube and a connector to facilitate irrigation and drainage.

Advantages
Minimally Invasive: Offers a less invasive alternative to surgical interventions, reducing recovery time and complications.
Effective Drainage: Provides reliable biliary drainage, improving patient outcomes by relieving jaundice and reducing the risk of cholangitis.

Types of NBDC Catheters
Pigtail NBDC: Features a pigtail shape for better retention within the bile duct.
Straight NBDC: Used for situations where a straight configuration is more appropriate.