Experimental study on the treatment of distal ureteral obstruction by magnetic compression technique&nbsp;

doi:10.13418/j.issn.1001-165x.2021.03.013

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Chinese Journal of Clinical Anatomy ›› 2021, Vol. 39 ›› Issue (3) : 319-322. DOI: 10.13418/j.issn.1001-165x.2021.03.013

Experimental study on the treatment of distal ureteral obstruction by magnetic compression technique

Deng Bo^1,2,3, Xu Shuqin^2,3, Wang Fangzhou^2,4, Shi Yuhang^2,4, Li Yixing^2,4, Lin Yi^2,4, Fan Qian^2,4, Ji Lin^2,4, Chen Wenwen^2,4, Lv Yi^1,2, Yan Xiaopeng^1,2

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Abstract

Objective　To explore the feasibility of using magnetic compression technique to treat distal ureteral obstruction.　Methods　Six New Zealand rabbits were ligated to the distal ureter of the right ureter with silk thread to simulate the model of distal ureteral obstruction after kidney transplantation. After 4 weeks, the ureteral dilatation was observed by laparotomy. It was confirmed that the model was successfully prepared when the ureter dilatation was 5 mm or more. The ureter was cut longitudinally about 5 mm in the upper ureter, where the daughter magnet was placed, and the daughter magnet was slowly pushed to the distal end of the ureter with a soft catheter. Another side, the body of bladder was opened and the incision was stitched by purse-string suture. The incision was about 5 mm long. The parent magnet was placed through the bladder incision, and the parent magnet was pushed to approach the daughter magnet. The parent and daughter magnets could be automatically aligned to absorb and compress the ureter and bladder wall. After a period time of operation, the daughter and parent magnets were detached into the bladder, and the ureter-bladder anastomosis was established. Specimens were obtained and the gross specimens of the anastomosis were observed with naked eyes.　Results　All the experimental animals were successfully operated and survived well after surgery. After 9-16 days, the daughter and parent magnets were detached into the bladder, and the ureter-bladder anastomosis was established. Obtaining anastomotic specimen showed that the anastomosis healed well.　Conclusions　Magnetic compression technique (MCT) is safe and feasible for the treatment of distal ureteral obstruction, which can be used clinically to treat distal ureteral obstruction after kidney transplantation.

Key words

Magnetic compression technique / 　Magnetosurgery / 　Kidney transplantation / 　Ureteral obstruction / 　Rabbits

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Deng Bo, Xu Shuqin, Wang Fangzhou, Shi Yuhang, Li Yixing, Lin Yi, Fan Qian, Ji Lin, Chen Wenwen, Lv Yi, Yan Xiaopeng. Experimental study on the treatment of distal ureteral obstruction by magnetic compression technique [J]. Chinese Journal of Clinical Anatomy. 2021, 39(3): 319-322 https://doi.org/10.13418/j.issn.1001-165x.2021.03.013

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