Fedora-type magnetic compression anastomosis device for intestinal anastomosis  

作　　者：Huan Chen Tao Ma Yue Wang Hao-Yang Zhu Zhe Feng Rong-Qian Wu Yi Lv Ding-Hui Dong 

机构地区：[1]National Local Joint Engineering Research Center for Precision Surgery&Regenerative Medicine,The First Affiliated Hospital of Xi'an Jiaotong University,Xi’an 710061,Shaanxi Province,China [2]Department of Hepatobiliary Surgery,The First Affiliated Hospital of Xi’an Jiaotong University,Xi’an 710061,Shaanxi Province,China

出　　处：《World Journal of Gastroenterology》2020年第42期6614-6625,共12页世界胃肠病学杂志（英文版）

摘　　要：BACKGROUND Although previous studies have confirmed the feasibility of magnetic compression anastomosis(MCA),there is still a risk of long-term anastomotic stenosis.For traditional MCA devices,a large device is associated with great pressure,and eventually increased leakage.AIM To develop a novel MCA device to simultaneously meet the requirements of pressure and size.METHODS Traditional nummular MCA devices of all possible sizes were used to conduct ileac anastomosis in rats.The mean(±SD)circumference of the ileum was 13.34±0.12 mm.Based on short-and long-term follow-up results,we determined the appropriate pressure range and minimum size.Thereafter,we introduced a novel“fedora-type”MCA device,which entailed the use of a nummular magnet with a larger sheet metal.RESULTS With traditional MCA devices,the anastomoses experienced stenosis and even closure during the long-term follow-up when the anastomat was smaller thanΦ5 mm.However,the risk of leakage increased when it was larger thanΦ4 mm.On comparison of the different designs,it was found that the“fedora-type”MCA device should be composed of aΦ4-mm nummular magnet with aΦ6-mm sheet metal.CONCLUSION The diameter of the MCA device should be greater than 120%of the enteric diameter.The novel“fedora-type”MCA device controls the pressure and optimizes the size.

关 键 词：Magnetic compression anastomosis Anastomotic stenosis Size of anastomat Compression pressure Fedora-type magnetic compression anastomosis device 

分 类 号：R656[医药卫生—外科学]