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 a magnetic anchoring device for esophageal endoscopic submucosal dissection, and
to explore the feasibility of its clinical application through magnetic analysis. Methods The esophageal CT image data of 30 clinical
patients with esophageal cancer were measured, and the traction force required in the esophageal submucosal dissection was measured
in vitro simulation experiment. Combined with the magnetic force displacement curve of the magnetic anchoring device, the magnetic
force of the magnetic anchoring device under different esophageal planes was analyzed. Results The imaging data showed that the
maximum distance between the esophagus and the body surface was (188.51±10.35) mm. The vitro simulation test showed that the
traction force required during the esophageal submucosal dissection was 0.05 N, and the actual magnetic force of the two kinds of
magnetic anchoring devices with displacement of 200 mm was 0.08 N and 0.15 N respectively. Conclusion The magnetic force of the
magnetic anchoring device can meet the traction force needed in the submucosal dissection of different parts of esophagus, and can
maintain sufficient tissue tension. The magnetic mechanics can meet the needs of clinical application.
