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Updated: Sep 22, 2025
Extrahepatic Bile Duct and Gall Bladder Dissection in Nine-Day-Old Mouse Neonates
Published on: August 23, 2022
Design and Development of a Disposable Superfine Catheter for Visual Examination of Bile Ducts and Related Animal
Jin-Yong Hao1,2, Yao-Ping Zhang1, Xiao-Jun Huang1,2
1Department of Gastroenterology, Lanzhou University Second Hospital, Lanzhou, Gansu, China.
Objective:
To design and develop a disposable superfine catheter system for visual examination of bile and pancreatic ducts and predict its clinical application value.
Methods:
The superfine triple-lumen catheter and miniature photography technology were used to design and produce a disposable superfine catheter for visual examination of bile and pancreatic ducts, and animal experiments were conducted to compare said catheter and SpyGlass™.
Results:
The designed and developed disposable superfine catheter for visual examination of bile ducts with a diameter of 2.4 mm could enter the third-order and fourth-order bile ducts in the animal liver and also the gallbladder via the cystic duct for observation. The said catheter has a water injection rate of 0.8 mL/s, 0.16 megapixels, a resolution of 400 × 400, a depth of field of 0.3 to 20 mm, and a tilting up angle >90°.
Conclusion:
The new disposable catheter for visual examination of bile ducts has a superfine diameter, easier operation, and clearer imaging, and is expected to have a higher clinical practical value.
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