Medicinal non-vascular coated particle pocket selective radiotherapeutic stent

Abstract

The invention discloses a medicinal non-vascular coated particle pocket selective radiotherapeutic stent. The stent comprises a tubular framework and a dual-layer membrane tube which is adhered to coatings inside and outside the frame to form a whole, wherein a pocket membrane is adhered to the outer membrane tube, and a plurality of strip particle pockets with upward openings are formed in the surface of the pocket membrane at intervals. The stent is safe and efficient to use due to the particle pocket is carried outside the stent, can be used for performing targeted treatment on stenosis andplugged paralysis of a cancerized region, can be easily taken out in later phase, and is an optional new treatment method for advanced cancer patients who loses the opportunity of surgical therapy and unwill to accept external beam radiotherapy.

Description

technical field [0001] The invention relates to the field of medical auxiliary equipment, more specifically, it relates to a medical non-vascular coated particle-selected radiotherapy support. Background technique [0002] Medical stents have been widely used, and are mainly used to prop up stenosis, blockage, local drug administration, etc., and the purpose is to make the cavity unobstructed. Current medical stents are basically used in a single trachea or two adjacent tracheas, such as esophagus, trachea, esophagus and stomach, gastrointestinal tract, intestinal tract, urethra, and biliary tract. For one type of patients, when local cancer of the esophagus or trachea occurs, the lumen is narrowed and blocked. For this, doctors mostly use radiotherapy first and then choose medical stents to open the lumen. The area kills normal cells, and the patients are also very painful during radiotherapy, and some patients are unwilling to accept external radiotherapy. [0003] There...

AI Technical Summary

Problems solved by technology

For one type of patients, when local cancer of the esophagus or trachea occurs, the lumen is narrowed and blocked. For this, doctors mostly use radiotherapy first and then choose medical stents to open the lumen. The area kills normal cells, and the patient is also very painful during radiotherapy, and some patients are unwilling to accept external radiotherapy.

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