Spiral close-range radionuclide radiotherapy device and particle automatic loading assembly

Abstract

The invention relates to the field of medical instruments, in particular to a spiral close-range radionuclide radiotherapy device and a particle automatic loading assembly. The device comprises: a cylindrical bracket and a drainage tube; a spiral first groove is formed in the bracket, and the drainage tube is spirally mounted in the first groove; and a plurality of radioactive particles are installed in the drainage tube. The drainage tube is fixed on the outer periphery of the bracket, which can implant particles in a biliary tract to perform radiotherapy, and can expand the biliary tract sothat the bile can flow normally; the particle chain has the same flexibility, certain peristalsis and self-alignment function as the bracket, so that the particle chain can be stably placed at a specified location. When a fan-shaped pendulum block in the particle automatic loading assembly is oscillated and rotated, a process where a particle body at the gap is pushed out by a particle body push device, the particle body to be loaded in a particle box slides down to the gap to be clamped is performed circularly, and the particle body can be continuously fed and sent during the swinging of thefan-shaped pendulum block.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a helical brachytherapy device and a particle automatic loading assembly. Background technique [0002] The incidence of cholangiocarcinoma is on the rise, and most of them have developed to the middle and late stages when they go to the doctor, often with severe obstructive jaundice, poor general condition, and obvious abnormal liver function. In most cases, surgical resection is difficult and the prognosis is poor. . For cholangiocarcinoma not suitable for surgical resection, palliative treatment with bile duct decompression is generally used. At present, the commonly used non-surgical methods are percutaneous transhepatic biliary drainage (PTBD), percutaneous transhepatic biliary stent placement, or endoscopic retrograde biliary stent placement through the duodenal papilla to relieve the biliary obstruction. Obstruction, bile drainage, and improvement of quality of life, while...

AI Technical Summary

Problems solved by technology

In the prior art, brachytherapy can be performed by inserting iodine 125 particle strips into the drainage tube. However, this technology significantly affects the drainage of bile because the particle strips are all placed in the drainage tube.

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