ObjectiveTo investigate the feasibility of magnamosis rings designed based on magnetic compression technique in esophageal anastomosis reconstruction.MethodsAccording to the anatomical characteristics of esophagus in SD rats, the esophageal magnamosis rings were designed. SD rats were used as animal models (n=10, 5 males and 5 females) to complete the magnetic anastomosis reconstruction of the cervical esophagus using magnamosis rings, and the operation time, animal survival, postoperative complications, magnetic rings excretion time were recorded. Two weeks after operation, the rats were killed, and the esophageal anastomotic specimens were obtained. The blasting pressure of the anastomotic site was measured and the formation of the anastomotic site was observed with naked eyes.ResultsEsophageal magnamosis was successfully performed in 10 SD rats, and the median operation time was 11 (8-13) min. All rats survived without anastomotic leakage, anastomotic stenosis, or magnetic rings incarceration. The magnetic rings were discharged after 8 (5-10) days and the burst pressure was higher than 300 mm Hg. Visual observation showed that the anastomotic muscle healed well and the mucosa was smooth.ConclusionThe magnetic compression technique can be used for anastomosis reconstruction of esophagus, which has the advantages of simple operation and reliable anastomosis effect, and has clinical application prospect.
Despite a wider application of robot to radical esophageal resection in recent years, the process of esophagogastrostomy is relatively complicated. Current commonly-applied clinical techniques in digestive tract reconstruction include end-to-end anastomosis, end-to-side anastomosis, and side-side anastomosis. The main methods are divided into manual and mechanical anastomosis. And the main instruments applied include circular stapler and linear stapler. Different technologies vary in advantages and restrictions and selecting the technique in esophageal operation depends on the situation of the tumor and the operator’s preference. The improved anastomosis techniques and the updated anastomosis instruments effectively lower the incidence of complications after esophagogastrostomy. However, there are still great difficulties in carrying out a safe and efficient reconstruction of the digestive tract during the operation. Scholars over the world have been working hard on it and have made modified various reconstruction techniques. Different technologies vary in advantages and restrictions and the choice of the technique depends on the situation of the tumor and the patient’s preference. There is no unified consensus on the choice of the technique. This paper introduces the research progress in robot’s assisted esophagogastrostomy from two aspects including the technique and method of anastomosis.