A radioactive source delivery device for a nuclide afterloading therapy machine

Abstract

The invention provides a radioactive source delivery device for a nuclide post-loading treatment machine, which includes: a real source driving mechanism, a false source driving mechanism, a source storage lead bag, a source tube, and a source detection mechanism; the peripheral equipment is a source applicator ; Among them, both the real source drive mechanism and the false source drive mechanism include: stepper motor, drive disc, drive belt, four pulleys, steel wire rope, steel wire storage pipeline, micro switch, access guide nozzle, delivery guide nozzle, steel wire Tail detection device, channel obstruction detection device, belt tensioning device; the key point of the present invention is that the radioactive source steel wire rope is always in the storage pipeline, without multiple coils on the driving disc, and the source jamming failure will not occur. Moreover, the invention has the characteristics of safety and reliability, convenient installation of radioactive sources, and simple debugging and maintenance.

Description

technical field [0001] The invention belongs to the technical field of internal irradiation radiotherapy equipment, and in particular relates to a radioactive source delivery device of a nuclide afterloading treatment machine. Background technique [0002] The radionuclide afterloading treatment machine is based on the optimization plan of the planning system. In the treatment room, the computer remote control is used to transmit the radioactive source to the corresponding residence position in the patient's source tube for radiotherapy. The characteristics of high dose, short range, and rapid drop of peripheral dose can effectively increase the local irradiation dose of tumors and protect surrounding normal tissues and important organs. [0003] The principle of the radioactive source delivery mechanism of the existing nuclide afterloading therapy machine is to press one end of the radioactive source steel wire rope on the source driving wheel with a pressure plate, and the...

AI Technical Summary

Problems solved by technology

The deficiencies of this technology are: 1. The radioactive source wire rope cannot enter the helical groove of the source drive wheel sequentially sometimes when the treatment is completed and retracted, causing the radioactive source steel wire rope to be stuck at the guide nozzle when it is used next time, resulting in a stuck source accident; 2. 1. The wire rope of the radioactive source is loosened in the spiral groove of the source driving wheel for multiple turns, resulting in a decrease in the accuracy of the source; 3. The structure is complex, and assembly, debugging and maintenance are troublesome

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