Multi-leaf collimator for tumor radiotherapy and tumor radiotherapy apparatus

Abstract

The invention discloses a multi-leaf collimator for tumor radiotherapy and a tumor radiotherapy apparatus. The multi-leaf collimator for the tumor radiotherapy comprises two leaf assemblies which are arranged oppositely in the frontward-and-backward direction, wherein each leaf assembly comprises a base, multiple leaves arranged side by side in the leftward-and-rightward direction as well as multiple linear motors, the multiple linear motors are arranged on the base and connected with the leaves in a one-to-one correspondence manner so as to drive the corresponding leaves to move, each of part of the linear motors is connected with the corresponding leaf through a direct-connection push rod for enabling the linear motor and the corresponding leaf to correspond to each other in the frontward-and-backward direction, and each of the rest linear motors is connected with the corresponding leaf through a bending push rod for enabling the linear motor and the corresponding leaf to be biased in the frontward-and-backward direction. The multi-leaf collimator for the tumor radiotherapy is high in running speed and positioning precision and compact and reasonable in layout.

Description

technical field [0001] The invention relates to the field of tumor treatment equipment, in particular to a multi-leaf collimator and a tumor radiation therapy apparatus for tumor radiotherapy. Background technique [0002] The multi-leaf collimator used in clinical radiotherapy equipment is usually composed of one or more groups of thin blades, and the blades are driven by a driving mechanism to reciprocate along a fixed trajectory. [0003] In order to improve the running speed and positioning accuracy of the blades, linear motors are usually used to drive the blades. Due to the limited accommodation space relative to the blades, the reasonable arrangement of the motors and the connection between the motors and the blades are particularly important. [0004] In addition, in related technologies, the leaves of the multi-leaf collimator are mostly made of high-density tungsten alloy to shield the radiation. However, when the leaves are made of a whole piece of high-density tu...

AI Technical Summary

Problems solved by technology

[0004] In addition, in related technologies, the blades of the multi-leaf collimator are mostly made of high-density tungsten alloy to shield the rays. However, when the blades are made of a whole piece of high-density tungsten alloy to process tiny threaded holes, cracks and breaks are prone to occur, which is not easy to process.

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