Self-retracting intraesophageal bracket capable of carrying radiation elements for partial radiotherapy

Abstract

The invention relates to a self-retracting intraesophageal bracket capable of carrying radiation elements for partial radiotherapy. The self-retracting intraesophageal bracket comprises a top ring, a force transmission plate, a bracket body and a thin-film sleeve sleeved on the bracket body, wherein medicine-carrying thin tubes are uniformly distributed on the outer wall of the thin-film sleeve; radiotherapy medicine is loaded in the medicine-carrying thin tubes; the top ring is arranged at one end of the bracket body; the force transmission plate is arranged on the top ring in a penetrating manner through a socket ring; the bracket body consists of telescopic units; each telescopic unit consist of two clamp arms and a plurality of clamp rings; the two clamp arms are in hinge joint; and the lower end of the force transmission plate is arranged on the clamp rings of the telescopic unit at the uppermost end. According to the self-retracting intraesophageal bracket disclosed by the invention, the esophageal stenosis passage can be effectively expanded during food taking, and the esophageal stenosis passage is closed at no food taking state, so that the backflow of gastric content can be effectively prevented, and foreign body sensation of a patient at on food taking state is obviously alleviated; and meanwhile, the radiotherapy medicine is carried by the intraesophageal bracket, plays the effect of partial radiotherapy while support expansion is performed on esophagus, and provides a better route of medication for tumor radiotherapy.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a self-stretching esophageal stent capable of carrying radioactive elements for local radiotherapy. 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 China, 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 advanc...

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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. With the emergence of esophageal cancer, medical methods are also continuously improved. For example, in the treatment of esophageal stenosis caused by malignant tumors, 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 China. It ranks 6th among malignant tumors in the world. Once discovered, most of them are in the middle and late stages. The most common problems in the middle and late stages of esophageal cancer patients are the difficulty in swallowing and eating caused by esophageal stenosis and obstruction in different degrees, which obviously affects the quality of life of patients.

Although the placement of the existing esophageal stent can quickly relieve the patient's difficulty in swallowing and eating, after the existing stent is placed, the stent always tightly supports the esophagus no matter when eating or not, and the patient's foreign body sensation is obvious. Gastric reflux is a major disadvantage, which obviously limits the clinical application of esophageal stents, making it difficult for most patients with esophageal cancer to receive stents.

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