A source dismantling auxiliary device for medical radioactive source

Abstract

The invention belongs to the field of radiation source disassembly devices, and particularly relates to an auxiliary source disassembly device for a medical radiation source. The device at least comprises a source pulling guide rod; the source pulling guide rod penetrates through a hot chamber from the exterior of the hot chamber and extends into the hot chamber, and rotary cooperation is formed between the source pulling guide rod and the chamber wall of the hot chamber; a pulling rope is arranged at the end, located in the hot chamber, of the source pulling guide rod, and the pulling rope and a hook-shaped chunk arranged on a manipulator are fixedly connected with each other; when the source pulling guide rod rotates and drives the pull rope to generate a winding action acted around a rod body of the source puling guide rod, the force applying direction of the pulling rope relative to the hook-shaped chunk arranged on the manipulator is same as the force applying direction that the hook-shaped chunk arranged on the manipulator pulls out a cobalt source; the device further comprises a lifting driving portion for driving the source pulling guide rod to do reciprocating linear action and a rotary driving portion for controlling the source pulling guide rod to do rotary action. The device can be used by cooperating with an existing conventional source assembly machine, therefore, the pulling force of a manipulator arranged in the existing source assembly machine is effectively increased, and then the quick replacement requirement of the cobalt source is finally achieved.

Description

technical field [0001] The invention belongs to the field of radioactive source disassembly and assembly equipment, and in particular relates to a source disassembly auxiliary device for medical radioactive sources. Background technique [0002] Gamma Knife is a non-interventional radiotherapy device used to treat cancer; it uses the gamma rays generated by cobalt-60 to selectively determine intracranial or internal diseased tissues as targets based on the principle of stereogeometric orientation A one-time high-dose focused irradiation is performed to cause focal necrosis or functional changes, and finally achieve the purpose of treating the disease. Gamma Knife has the advantages of accurate target, high dose rate, short treatment time and high tumor control rate, so it has been widely used at home and abroad in recent years. [0003] At present, most of the conventional source replacement methods used in practice use a special equipment called loading (unloading) cobalt ...

AI Technical Summary

Problems solved by technology

As a special equipment that can realize safe loading and unloading source operation, the above structure does serve a certain purpose of loading and unloading source operation. However, in practical application, it is found that this equipment still has the following problems: due to the attenuation of cobalt-60 as a radioactive source, every The replacement period of the cobalt source of each equipment is 6-8 years

Due to the water vapor in the air, there will be oxidation and corrosion of different sizes on the surface of the locking parts for a long time, and the locking parts will be stuck due to corrosion.

However, the maximum pulling force of 10kg calibrated by the current manipulator in its best posture cannot separate the cobalt source from the stuck positioning ring at all, resulting in the unsmooth loading and unloading of the cobalt source.

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