Medical primary collimation structure of heavy ion beam

Abstract

The invention discloses a medical primary collimation structure of a heavy ion beam, for overcoming the problems of large volume, heavy weight, large occupied space, compatible functions, unfavorable association during repair and fault processing, low adjustment precision and incapability of satisfying a continuous adjustment requirement in the prior art. The medical primary collimation structure of the heavy ion beam is characterized in that a left-right horizontal ball lead screw assembly and a left-right vertical ball lead screw assembly, and the left-right horizontal ball lead screw assembly is connected with a left collimation blade through a left collimation blade connecting plate and is connected with a right collimation blade through a right collimation blade connecting plate; and the left-right vertical ball lead screw assembly is connected with an upper collimation blade through an upper collimation blade connecting plate and is connected with a lower collimation blade through a lower collimation blade connecting plate. The medical primary collimation structure comprises the following advantages: the structure is simple, the four collimation blades can be driven to synchronously open and closed simply through two left-right ball lead screws, there is a single function, the operation is simple and reliable, the maintenance is simple, and the requirement for synchronous and continuous adjustment of heavy ion beam channel primary collimation in a heavy ion tumor treatment apparatus can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, in particular to a medical primary collimation structure for a heavy ion beam in a heavy ion tumor treatment device. Background technique [0002] Using heavy ion beams for tumor radiotherapy is a brand-new medical method. Compared with traditional tumor treatment methods, this treatment method is safe, minimally invasive and fast, and it is a precision treatment technology. The medical primary collimator of the heavy ion beam is an important part of the heavy ion tumor treatment device. Its role has two aspects. On the one hand, it determines the maximum radiation field range that the accelerator can provide. On the other hand, it Blocking the primary radiation produced by the radiation source outside the maximum radiation field range, it is the primary modulation of the radiation field in heavy ion tumor radiotherapy, placed at the exit of the heavy ion beam, and taking the center of ...

AI Technical Summary

Problems solved by technology

The problem with this utility model is that it is a relatively independent structural part. This relatively independent structural part has large volume, heavy weight, and takes up a lot of space. It requires a large installation space at the outlet of the heavy ion beam. Compatible, in the maintenance and troubleshooting, there will be unfavorable correlation; in addition, the utility model uses countersunk screws for connection, the problem is that the countersunk screws need to contribute to the fastening function and self-positioning function, which will definitely interfere with the adjustment , and put forward extremely strict requirements on machining accuracy. Third, because the utility model is adjusted by adjusting screws, adjusting blocks and manually adjusted, the precision is low and cannot meet the requirements of continuous adjustment.

[0003] In the process of structural improvement, the applicant uses 4 motors and 4 lead screws to drive 4 collimation blades to open and close synchronously. The structure is complicated, the volume is still large, the installation and debugging are cumbersome, and the cost is high, so further improvement is needed

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