1. a. Department of Hepatobiliary Surgery丨 b. National Local Joint Engineering Research Center for Precision Surgery &
Regenerative Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an Shaanxi 710061, China丨
2. a. Qide College丨 b. Zonglian College, Xi’an Jiaotong University, Xi’an Shaanxi 710061, China
Abstract：Objective To design and manufacture magnamosis device for recanalization of ureteral stricture after kidney
transplantation and verify its feasibility in experimental rabbits. Methods Based on the analysis of the anatomical characteristics of
lumen of the urinary system, combined with the principle of magnetic anastomosis technology, a dual-path magnet placement path
was designed. Two design schemes of central through-hole cylinder and tail-hanging cylinder were proposed, and the anastomosis
recanalization effect was verified on experimental rabbits. Results The anastomosis recanalization magnets for ureteral stricture
with different degree of stricture were successfully designed and manufactured. The cylindrical magnet with a central through-hole
structure is suitable for severe ureteral stricture, but the guide wire can still pass through. The cylindrical magnet with tail hanging
structure is suitable for complete ureteral occlusion. The magnetic anastomosis of ureter and bladder was successfully achieved in
rabbits with distal ureteral ligation. Conclusion The magnamosis device based on magnetic anastomosis technology for ureteral
stenosis after kidney transplantation is ingenious in design and easy to be processed, which can meet the requirements of anastomotic
recanalization of ureteral stenosis in different degrees, and has a prospect of clinical application.
