The magnetic compression technique in the treatment of severe mid-ureteral stricture
10.12483/j.issn.1009-8291.2026.02.015
- VernacularTitle:基于兔模型的磁压榨技术治疗输尿管中段严重狭窄实验研究
- Author:
Fanchao WEI
1
;
Zhaoxiang WANG
1
;
Shichao HAN
1
;
Zhiwen DONG
1
;
Yuxin FU
1
;
Ruochen QI
1
;
Guohui WANG
1
;
Xiaoyan ZHANG
1
;
Tong XU
1
;
Jingliang ZHANG
1
;
Weijun QIN
1
;
Lijun YANG
1
;
Shuaijun MA
1
Author Information
1. Department of Urology, Xijing Hospital of Air Force Medical University, Xi'an 710032, China
- Publication Type:Journal Article
- Keywords:
magnetic compression technique;
mid-ureteral stricture;
animal experiment;
magnetic surgery;
magnetic anastomosis
- From:
Journal of Modern Urology
2026;31(2):182-186
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility of magnetic compression technique (MCR) in the treatment of severe single mid-ureteral stricture in a rabbit model. Methods After 10 female New Zealand rabbits were selected, the distal end of the right ureter was ligated with silk thread. Two weeks after the operation, when the right ureter was dilated, the mid-ureter was ligated again with silk thread to create a severe single mid-ureteral stricture animal model. Longitudinal incisions were made at the upper and lower ends of the ligation site, and cylindrical NdFeB magnets with central holes (sub-magnets and main magnets) were placed to anastomose and recanalize the mid-ureteral stricture. The magnets were adjusted to the appropriate position to automatically align and attract each other. The longitudinal incision sites of the ureter were sutured with 6-0 Prolene thread, and the abdominal cavity was closed layer by layer. The operation time was recorded. X-ray films were taken every two days to confirm the position of the magnets and record the time of magnet detachment. Three weeks after the operation, the anastomotic specimens were obtained, and the formation of the anastomosis was evaluated with gross observation and histological staining. Results Two weeks after ligation, all experimental rabbits showed obvious dilation of the right ureter. The mid-ureteral ligation and placement of the male and female magnets were successfully completed in all 10 experimental rabbits, with an operation time of (24.00±5.15)minutes. The male and female magnets attracted each other well. X-ray examination showed that the magnets detached and entered the distal ureter (14.0±1.9) days after magnetic compression. The recanalization of the severe single mid-ureteral stricture was successfully achieved. The gross specimens and histological examination of the anastomosis showed that the anastomosis remained patent and the mucosal healing was good. All experimental rabbits survived well after the operation without serious complications. Conclusion MCT provides a new idea and novel method for the treatment of mid-ureteral stricture. This study confirmed the feasibility of this technique in treating severe single mid-ureteral stricture in a rabbit model. The operation is relatively simple and has potential for clinical application.
