Novel fixed, recyclable and anti-displacement esophagus metal stent

Abstract

The invention relates to a novel fixed, recyclable and anti-displacement esophagus metal stent. The esophagus metal stent comprises a main body part, fixing rings, anti-skidding wires and fixing clips. The main body part is tubular. The surface of the main body part is covered by a film. Additionally, edge at upper and lower ends of the main body part are covered by a skirt film formed from the film. Positions, approaching end openings, of the upper and lower ends of the main body part are equipped with shallow grooves. The multiple fixing rings are respectively arranged on the anti-skidding wires. The anti-skidding wires which are fixedly equipped with the multiple fixing rings in a penetrating manner are respectively fixed into the shallow grooves at upper and lower ends of the main bodypart. The fixing clips are arranged onto the fixing rings. The novel fixed, recyclable and anti-displacement esophagus metal stent has following advantages: the recovered fixing clips are used for fixing the stent; the stent has more reliable fixation effect without depending on friction force between the stent and an esophageal wall; the diameter of the main body part is properly reduced; pressure on the esophageal wall is minimized; discomfort of a patient is relived; hyperplasia of esophageal mucosa is avoided; and the stent is convenient to recover subsequently.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a novel fixable, recyclable and anti-displacement metal stent for the esophagus. Background technique [0002] At present, with the advancement of endoscopic technology, endoscopic submucosal dissection (ESD) has become the first choice for the treatment of early esophageal cancer and precancerous lesions. However, esophageal stenosis, one of the complications of esophageal ESD, will affect the patient's eating, which will greatly reduce the quality of life. Currently, prophylactic esophageal stent placement for esophageal stenosis is an important method to prevent stenosis. However, since the esophagus is a hollow organ, it lacks a good fixation effect on the stent, and factors such as eating, esophageal peristalsis, and gravity make the stent easily shift, which limits its clinical application. [0003] The existing anti-displacement esophageal stent mainly increases ...

AI Technical Summary

Problems solved by technology

The new esophageal stent in this patent adopts a tubular filament mesh structure. Two points of the main body of the stent are integrally formed with olive ports, so that the entire stent can be fixed by using the two ports. However, the esophageal stent in this patent exists The disadvantage is that the contact surface between the two ports and the esophageal wall is less, which is prone to displacement, and the effect is not reliable only by the two ports.

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