TPS assisted 3D personalized printed biliary tract short-distance irradiation drainage device

Abstract

The present invention provides a TPS assisted 3D personalized printed biliary tract short-distance irradiation drainage device. The bile in the biliary tract is led out of the body by an external drainage tube, so that the problem of cholestasis is solved and the jaundice of a patient is effectively reduced; in order to avoid digestive disorder of the patient, the led-out bile can be infused backinto the intestinal tract from an internal drainage tube to meet the normal bile requirement of the patient, and a nutrient solution can be infused into the intestinal tract by the internal drainage tube to ensure the nutrition of the patient; side holes of the external drainage tube are in the biliary tract, the tail end of the external drainage tube is closed, side holes of the internal drainagetube are in the intestinal tract and no side holes are in the biliary tract, so that the cholangitis due to the retroinfection of the biliary tract by bacteria in the intestinal tract is avoided; anda plurality of radioactive particles are placed in a particle loading cavity, if the dose of the placed particles in a loading tube is insufficient, a fine tube loaded with the radioactive particlescan be placed in the external drainage tube by the lowest side hole of the external drainage tube, or the fine tube is temporarily placed in the internal drainage tube to serve as a temporary loadingtube, and when the radiation period ends, the fine tube is directly pulled out.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a 3D personalized printed biliary brachytherapy drainage device assisted by a treatment planning system (TPS). Background technique [0002] Clinically, advanced malignant tumors such as pancreatic cancer, ampullary cancer, and hilar cholangiocarcinoma often invade or compress the bile duct and cause biliary obstruction, which leads to yellow staining of the skin and mucous membranes, liver function damage, indigestion, abnormal coagulation function, and biliary tract obstruction. Infection and even septic shock; the patient's life and life expectancy are seriously affected. However, the effect of surgery and external radiotherapy is not good for these patients. [0003] Percutaneous puncture biliary drainage (PTCD) is a minimally invasive and effective treatment for such patients. It can reconstruct the bile drainage channel through intrahepatic and external drainage tu...

AI Technical Summary

Problems solved by technology

[0004] However, the PTCD drainage tubes currently on the market only have the function of drainage to improve the symptoms of patients, and generally have the following defects: 1) The incidence of restenosis and re-obstruction in the biliary obstruction site invaded by tumor after PTCD operation is high; 2) Intratumoral granulation tissue hyperplasia , it is easy to block the drainage tube, resulting in a short interval of tube replacement, and the tube needs to be changed every 2-3 months; 3) It has no therapeutic effect on local tumor tissue in the biliary obstruction area

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