Patent ID: 7094260
Filing Date: 2006-08-22
Classification: A61F

Abstract:
1. A biodegradable common bile duct stent for longitudinal and tranverse incisions at multiple parts of a common bile duct or a common hepatic duct, wherein the stent includes a tube structure with thin and continuous walls, and includes an outer shape substantially equal to an anatomical shape of the common bile duct, wherein outer diameters of various parts of the stent are substantially equal to 1 to 3 times inner diameters of corresponding parts of the common bile duct of a healthy person, wherein the stent is made of biodegradable polymeric material including X-ray opaque components, and wherein the said continuous wall of the stent has an outer surface comprising multiple protruding rims separated by a distance of between 5 and 10 mm, wherein the cross section of ring-shaped rims is in a form of square with round angles, and wherein the width and height of the ring-shaped rims are 1–2 mm, respectively.