Abstract: [Objective] To meet the needs of surgical excision of esophagus, or feeding and sampling of dogs used in physiology experiments, an experimental operation of artificial gastric fistula was performed. [Method] Five middle or large dogs were selected for the operation, and general anesthesia by inhalation was performed after preoperative preparation and examination. The abdominal skins in stomach area were cut, the muscular tissues were separated, the greater curvature of stomach was pulled out, the gastric wall was cut in the area without blood vessels, and the artificial gastric fistula was inserted. A double-layer purse-string suture was performed on the serosal muscular layer of gastric wall. The muscular tissues in abdominal wall were sutured tuberously. Povidone iodine ointment or oil was injected into the gap between muscle and fistula to accelerate granulation formation. After 6 months of operation, granulation tissue samples were taken from 2 dogs for preparing pathological section. [Result] The wounds of all the 5 experimental dogs healed well and could be fed with the fluid diet 15-25 days after operation. The pathological observation showed that granulation tissues grew well and were mature granulation. [Conclusion] This surgical method provides a practical basis for the fistulization of pathological reasons and physiological experiment operation.

Key words: canine, artificial fistula, gastric fistula, pathological section, operation