Intracavitary stent for medical radiotherapy and chemotherapy

Abstract

The invention discloses a medical stent in radiotherapy and chemotherapy tracts. The medical stent comprises a stent main body, wherein more than one airtight radiotherapy bin is fixedly arranged on an outer wall of the stent main body; radiotherapy particles are arranged in the radiotherapy bins; a gap between the radiotherapy bins is 1.5 to 2.5cm; and chemotherapy medicines are fixed on the outer wall of the stent main body between adjacent radiotherapy bins. The medical stent has the advantages that: radiotherapy and chemotherapy are locally performed, systemic side effects are reduced, and the toxic and side effects are reduced.

Description

Technical field:

[0001] The invention relates to a medical device, in particular to a stent in a cavity for medical radiotherapy and chemotherapy. Background technique:

[0002] Malignant strictures of the respiratory tract, digestive tract, and biliary tract are often caused by growth into the lumen or infiltration of the tube wall by lung cancer, esophageal cancer, gastric cancer, small intestine cancer, colon cancer, bile duct cancer, gallbladder cancer, pancreatic cancer, ampullary cancer, and hepatic hilar metastases due to.

[0003] Although surgery is the first choice to relieve malignant stenosis, many patients are already in the middle and late stages of cancer when they see a doctor. Surgical treatment is difficult, with many complications and high mortality. However, with radiotherapy or chemotherapy, the patient's obstructive symptoms disappear slowly or cannot disappear, and there are disadvantages of systemic adverse reactions and large toxic and side effects....

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