4A Internal-External Biliary Drainage Catheter
The Internal-External Biliary Drainage Catheter is engineered for dual-function biliary management, providing simultaneous internal drainage into the duodenum and external decompression outside the abdominal wall. Featuring drainage holes both proximal and distal to a biliary stricture, this catheter bridges the obstructive lesion, restoring internal bile flow to aid digestion while allowing external monitoring and flushing.