Tunnel support for endoscopic submucosal dissection

Abstract

The invention provides a tunnel support for endoscopic submucosal dissection. The tunnel support comprises an air bag, a tubing, a negative pressure tube, a lead guide tube and an inflatable tube; the negative pressure tube, the lead guide tube and the inflatable tube are located in the tubing; the air bag is located at the front end of the tubing; the negative pressure sucking tubes are lengthways arranged on two sides of the upper wall and the lower all of the air bag; outward negative pressure sucking holes which pass through the air bag wall to communicate with the outside are uniformly formed in the negative pressure sucking tubes at the two sides of the upper wall and the lower wall of the air bag; the inflatable tube communicates with the air bag; the negative pressure tube is connected with a negative pressure generator. The tunnel support is simple in structure, convenient and reliable to operate, and effective to support a tunnel during the endoscopic submucosal dissection, so as to greatly reduce perforation and injury on muscularis propria and other complications; in addition, the difficulty at surgery can be greatly reduced, the cutting efficiency can be improved, and meanwhile, the safety of the surgery can be improved.

Description

technical field [0001] The invention relates to a medical device, in particular to a tunnel supporter for endoscopic submucosal dissection. Background technique [0002] Endoscopic submucosal dissection is an important technique for complete resection of early gastrointestinal and esophageal cancer through gastroscope and colonoscopy. After separation, the submucosa is gradually separated by various electric scalpels, so that the superficial mucosa is completely peeled off from the muscular layer. Among them, the tunnel technique is a commonly used technique in dissection. The method is to establish tunnel openings on the anal and oral sides of the lesion, and then use an electric knife to gradually separate the submucosa from the oral side to the anal side, and finally connect with the anal opening to form a tunnel. Finally, the tunnel walls on both sides are gradually stripped and removed. The difficulty of this technique is that when the tunnel walls on both sides are fi...

AI Technical Summary

Problems solved by technology

Among them, the tunnel technique is a commonly used technique in dissection. The method is to establish tunnel openings on the anal and oral sides of the lesion, and then use an electric knife to gradually separate the submucosa from the oral side to the anal side, and finally connect with the anal opening to form a tunnel. Finally, the tunnel walls on both sides are gradually stripped and removed. The difficulty of this technique is that when the tunnel walls on both sides are finally removed, the tunnel walls will collapse due to the resection, and at the same time, the superficial mucosa on the top of the tunnel will shrink, which will aggravate the collapse of the tunnel and lead to surgery. The limited field of view affects the efficiency of resection, and some patients even cause muscle layer damage and complications such as perforation

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