A retractable inner stent for treating esophageal stricture

Abstract

The invention relates to a retractable inner stent for treating esophageal stenosis, which includes a frame body, an elastic film cover and a limit mechanism sheathed outside the frame body. The frame body is composed of two frame units, and each frame unit includes two The clamp arm and two semicircular clamp rings, the two bracket units are hinged together through the clamp arm, and the openings of the two semicircular clamp rings at the same end are oppositely set; the limit mechanism includes a support rod, a support rod, a limit Rod and clamping rod, the rod is set on the clip arm of one of the bracket units through a torsion spring, and a plurality of limit rods are evenly arranged in the length direction of the support rod, and the angle between the limit rod and the support rod is less than 60° The included angle is set, the clamping rod is arranged on the clamping arm opposite to the clamping arm where the support rod is located, and the clamping rod and the plane where the two clamping arms are located are perpendicular to each other. The telescopic inner stent of the present invention can be quickly placed in the stenosis of the esophagus, the whole placement process of the inner stent is simple, fast, convenient to take out, and has a high success rate of operation.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a retractable internal stent for treating esophageal stenosis. Background technique [0002] At present, cancer is one of the three major killers of human diseases, and the mortality rate of patients is relatively high. However, after decades of careful research by people in the medical and health circles, therapeutic drugs continue to appear, and medical methods are also continuously improved, such as the treatment of cancer caused by malignant tumors. For esophageal stenosis, clinicians put in stents to achieve the purpose of expanding the pipeline. Taking esophageal cancer as an example, esophageal cancer is one of the common malignant tumors of the digestive tract in my country, ranking sixth among malignant tumors in the world. Once discovered, it is mostly in the middle and late stage , The most common problem in patients with middle and advanced esophageal cancer...

AI Technical Summary

Problems solved by technology

[0002] At present, cancer is one of the three major killers of human diseases, and the mortality rate of patients is relatively high. However, after decades of careful research by people in the medical and health circles, therapeutic drugs continue to appear, and medical methods are also continuously improved, such as the treatment of cancer caused by malignant tumors. For esophageal stenosis, clinicians put in stents to achieve the purpose of expanding the pipeline. Take esophageal cancer as an example. Esophageal cancer is one of the common malignant tumors of the digestive tract in my country, ranking sixth among malignant tumors in the world. Once discovered, it is mostly in the middle and late stage The most common problems in patients with middle and advanced esophageal cancer are difficulty in swallowing and eating caused by esophageal stenosis and obstruction in different degrees, which obviously affects the quality of life of patients

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