磁压榨技术建立胃肠吻合的动物实验研究
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1.西安交通大学第一附属医院肝胆外科;2.西安交通大学第一附属医院精准外科与再生医学国家地方联合工程研究中心;3.西安交通大学启德书院;4.西安交通大学宗濂书院;5.西安交通大学第一附属医院胸外科

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国家自然科学基金(81700545);陕西省自然科学基础研究计划(2017JQ8021);中央高校基本科研业务费专项资金(xjj2018jchz14);西安交通大学大学生创新训练项目(GJ201910698163)


Establishment of gastrointestinal anastomosis by magnetic compression technique in rabbits
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National Natural Science Foundation of China (81700545); Natural Science Basic Research Plan in Shaanxi Province (2017JQ8021); Fundamental Research Fund for the Central Universities (xjj2018jchz14); Innovation Training Program for Undergraduate of Xi'an Jiaotong University (GJ201910698163)

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    摘要:

    目的 探讨利用磁压榨技术建立兔胃肠吻合的可行性。方法 以10只健康新西兰兔为实验动物,设计加工适合兔胃肠吻合的子、母磁体。设计手术操作路径,在胃体乏血管区做荷包造瘘,经造瘘口先置入子磁体于胃内,并将其沿肠道推送至十二指肠,然后经胃造瘘口再次置入母磁体,调整子、母磁体在合适位置后子、母磁体自动对位相吸并压榨胃壁和肠壁。荷包缝合关闭胃造瘘口。待子母磁体间压榨的组织缺血—坏死—脱落后,胃肠吻合口即建立,子母磁体及坏死组织一起经消化道排出体外。观察实验动物术后存活情况,术后1个月处死动物获取吻合口标本,测量吻合口爆破压,肉眼观察吻合口愈合情况。结果 按预先设计的手术操作路径,10只新西兰兔均顺利完成手术操作并存活至术后1个月。围手术期内未出现并发症。手术操作时间(35.80±4.71)min(28.00~43.00 min),磁体排出时间(11.40±1.56)d(9.00~14.00 d)。术后1个月获取吻合口标本,肉眼观察可见胃肠旁路吻合口愈合良好,周围组织轻度粘连。吻合口爆破压(103.00±7.95)mmHg(94.00~113.00 mmHg)(1 mmHg=0.133 kPa)。结论 利用磁压榨技术建立兔胃肠吻合操作简单、效果确切。

    Abstract:

    Objective To study the feasibility of establishing gastrointestinal anastomosis by magnetic compression technique in rabbits. Methods Ten healthy New Zealand rabbits were selected as models for gastrointestinal anastomosis by magnetic compression technique. Daughter and parent magnets suitable for gastrointestinal anastomosis in rabbits were designed and manufactured. A daughter magnet was inserted into the stomach through the purse fistula in the lack of blood vessel area of gastric body, and was pushed into the duodenum along the intestinal tract. And then a parent magnet was inserted through the stomach fistula. The daughter and parent magnets were automatically attracted and pressed the gastric and intestinal walls after they were adjusted in the proper position. The stomach fistula was closed with purse string suture. After ischemia, necrosis, detachment of the tissues between magnets, gastrointestinal anastomosis was established, and the magnets and necrotic tissues were expelled together from the body through the digestive tract. Survival of experimental animals was observed. Anastomotic specimens were obtained one month after operation. The blasting pressure of anastomotic stoma was measured, and the healing of anastomotic stoma was observed with naked eyes. Results According to the pre-designed operative route, 10 New Zealand rabbits all successfully completed the operation and survived one month after surgery. No complications occurred during perioperative period. The operation time was 35.80±4.71 min (range 28.00-43.00 min), and the magnet discharge time was 11.40±1.56 days (range 9.00-14.00 days). Anastomotic specimens were obtained one month after the operation. Gross observation showed that the anastomotic stoma of gastrointestinal bypass anastomosis healed well, and the surrounding tissues adhered slightly. The anastomotic bursting pressure was 103.00±7.95 mmHg (range 94.00-113.00 mmHg) (1 mmHg=0.133 kPa). Conclusion The establishment of gastrointestinal anastomosis by magnetic compression technique in rabbits is simple and effective.

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吝怡,吉琳,樊茜,等.磁压榨技术建立胃肠吻合的动物实验研究[J].中华消化内镜杂志,2020,37(9):652-656.

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  • 收稿日期:2019-08-26
  • 最后修改日期:2020-07-01
  • 录用日期:2019-11-05
  • 在线发布日期: 2020-09-25
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