Application of magnetic recanalization technology in treatment of complex refractory benign biliary stricture
10.3760/cma.j.cn112139-20241231-00600
- VernacularTitle:磁疏通技术在难治性良性胆道狭窄中的应用效果
- Author:
Yu LI
1
;
Hui XU
1
;
Xuemin LIU
1
;
Yi LYU
1
;
Xufeng ZHANG
1
Author Information
1. 西安交通大学第一附属医院肝胆外科 精准外科与再生医学国家地方联合工程中心，西安 710061
- Publication Type:Journal Article
- Keywords:
Biliary tract diseases;
Therapeutic uses;
Magnetic recanalization technique;
Biliary Stricture;
Percutaneous transhepatic cholangiography drainage;
Endosco
- From:
Chinese Journal of Surgery
2025;63(6):475-479
- CountryChina
- Language:Chinese
-
Abstract:
Benign biliary strictures are frequently encountered after liver transplantation or as a result of iatrogenic injury, among others. Complex and refractory benign biliary obstructions refer to biliary strictures that persist or treatment fails despite multiple endoscopic therapies. Traditional endoscopic approaches demonstrate suboptimal therapeutic effects in treating such patients, with a high recurrence rate. Moreover, surgical operations are highly invasive, and the outcomes are also unsatisfactory. The magnetic dilation technology establishes an external drainage sinus tract via percutaneous transhepatic biliary drainage and positions a magnet above the obstructed biliary tract; through endoscopic retrograde cholangiopancreatography, another magnet is placed beneath the obstructed biliary tract. The two magnets mutually attract each other, exerting pressure on the scar tissue in the middle of the magnets, causing it to gradually become ischemic, necrotic, and detached, and subsequently discharged along with the magnets. The biliary epithelial cells surrounding the magnets gradually repair and heal, ultimately forming a new patent anastomosis. The magnetic dilation technology, through slow compression, realizes the concurrent process of “removing” scars and healing, avoiding severe local inflammatory responses and excessive tissue hyperplasia. Consequently, the magnetic dilation technology possesses advantages such as minimally invasiveness and reliable effects, gradually emerging as an effective modality for treating complex and refractory benign biliary stricture cases.
