Radiotherapy device, radiation device and collimating device

Abstract

The invention relates to a radiotherapy device, a radiation device and a collimating device. The collimating device comprises an axially hollow collimating body and a switch body, wherein the axially hollow collimating body is provided with at least one group of collimating holes, the centerlines of all groups of collimating holes are focused at one common focal point, and the distribution law of each group of collimating holes is matched with the distribution law of the radioactive source; and the switch body is rotatably arranged in the axially hollow collimating body and is used for allowing or blocking the radioactive rays to penetrate through the collimating holes. According to the invention, the control accuracy of the collimating device can be increased, the axial dimension of the collimating device is reduced, so that the weight of the collimating device can be reduced, the material is saved, and machining and manufacturing procedures are simple; the radioactive rays are allowed or blocked to penetrate through the collimating holes by simultaneously rotating the collimating body and the switch body, and the speed of the radiotherapy device switched from the therapy state to the non-therapy state is increased.

Description

Technical field [0001] The present invention relates to a medical equipment used for the treatment of tumors and other diseases, in particular to a radiotherapy device, a radiation device and a collimator device. Background technique [0002] Radiotherapy is a method of treating malignant tumors and other diseases by using radiation such as alpha, beta, and gamma rays produced by radioisotopes and x-rays, electron rays, proton beams and other particle beams produced by various x-ray treatment machines or accelerators. [0003] The prior art has a variety of equipment that uses radiation to treat tumors and other diseases. For example, the Chinese patent application number "200620337766.3" discloses "a structure of a medical radiotherapy device", and the Chinese patent application number "200510032933.2" discloses a A radiotherapy device", a collimating device for correcting X-ray beams disclosed in the U.S. Patent No. "US4993189". Among them, the "a radiotherapy device" disclosed ...

AI Technical Summary

Problems solved by technology

[0004] However, in the radiotherapy device of the prior art, since the driving device not only drives the cylindrical collimator to move circularly around the central axis, but also has a screw transmission in the axial direction, it is bound to make the motion control of the driving device to the collimator complicated. The degree and difficulty increase, thereby reducing the control accuracy; in addition, due to the axial helical movement, the axial dimension of the radiotherapy device increases, which not only increases the material cost of the collimation device, but also increases the weight, and the processing and manufacturing are more troublesome; on the other hand, When switching from a treatment state to a non-treatment state, in order to reduce unnecessary radiation, it is necessary to shield the radiation as soon as possible, so the faster the conversion speed, the better, while the shielding conversion speed in the prior art is relatively slow

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