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Radiotherapy equipment based on parallel mechanism

A radiation therapy and parallel technology, which is applied in radiation therapy, treatment, X-ray/γ-ray/particle irradiation therapy, etc., can solve the problem of inability to adjust the position and direction of the rotation axis, the inability to adjust the direction flexibly and accurately, and the limitations of the treatment effect, etc. problem, to achieve the effect of protecting normal cells, making it easy to be intelligent, and increasing the killing rate

Inactive Publication Date: 2020-02-21
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the fixed-point rotation realized by radiotherapy equipment at home and abroad is the rotation of a fixed axis, which cannot realize the online adjustment of the position and direction of the rotation axis according to the patient's position, which is relatively clumsy and not flexible enough, and it is difficult to switch between lesions in different positions
[0004] In the process of radiotherapy, the flexibility of the spatial movement of the radiation head is of great help to the treatment of patients and their physiotherapists to formulate treatment plans, but the existing radiotherapy equipment has poor spatial movement capabilities and cannot be flexible and precise. The direction of adjustment, therefore, leads to a great limitation in the therapeutic effect

Method used

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  • Radiotherapy equipment based on parallel mechanism
  • Radiotherapy equipment based on parallel mechanism
  • Radiotherapy equipment based on parallel mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1 uses circumferential radiation therapy. During the whole treatment process, firstly, the patient lies on the Y-direction feed transmission bed plate 401, enters the CT rotation detection device 102 to locate the lesion in the body, and then rotates and positions the parallel mechanism according to the coordinate conversion. The device 103 makes the lesion in the best position for the radiation head 2 to perform radiation therapy.

[0056] The radiation head 2 is connected to the geometric center of the moving platform 304 of the parallel transmission mechanism 3. The radiation head 2 is aligned with the target area through the change of the pose of the moving platform, and the particle radiation control grating ruler 204 is adjusted in real time online, so that The shape of the particle radiation control grating ruler 204 coincides with the shape of the target area in real time to meet the error requirement within the allowable range of treatment, so as to p...

Embodiment 2

[0059] Embodiment 2 adopts non-circumferential radiation therapy. On the basis of Embodiment 1, the parallel mechanism rotation positioning device 103 is kept stationary, and the moving platform of the parallel mechanism is driven, so that the radiation head 2 is in the best posture for treatment, so that real-time Control the braking platform so that the radiation head 2 is aimed at the target cells, and adjust the particle radiation shape control grating scale 204 online in real time, so that the shape of the particle radiation shape control grating scale 204 matches the shape of the target area in real time, within the allowable range of treatment error requirements for radiotherapy.

[0060] This embodiment is biased towards the side of the human body for tumor cells, specifically as Figure 8b As shown, radiotherapy can be performed around a point in space, forming a series of motion trajectories, such as the spiral inverted cone motion trajectory, specifically as Figur...

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Abstract

The invention provides radiotherapy equipment based on a parallel mechanism. The equipment includes a CT rotary positioning device, the parallel transmission mechanism, a radiation machine head and amovable bed. The equipment can flexibly and accurately adjust an orientation online to realize targeting on cancer cells in different parts, flexibly adjust the machine head according to lesions in parts of a human body to realize rotation along the axis of a ruled curved surface of disjoint space, and form a space disjoint conical path during the scanning movement, thereby reducing radiation to normal cells in the entire scanning process, so that the killing rate of the cancer cells can be improved, and the normal cells or healthy organs are protected to the greatest extent; and in addition,two embodiments can be proposed according to the lesions in the different parts of the human body, the machine head can be flexibly adjusted to realize rotation in different directions along the axisin the space, and the equipment provided by the invention is more flexible than current equipment and brings a lot of convenience to a treatment planning system.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a radiotherapy equipment based on a parallel mechanism. Background technique [0002] At present, the global cancer death rate accounts for nearly one-sixth of the total death toll, and there are more than 14 million new cancer cases every year. Therefore, tumor treatment has become a major issue of global concern, and it is also a field of high concern for the development of medical equipment. At present, the treatment methods for tumors mainly include surgical operation, radiotherapy (abbreviated as radiotherapy), and chemotherapy (abbreviated as chemotherapy). After investigation, about 70% of malignant tumor patients must use radiotherapy to obtain a better therapeutic effect. [0003] After searching the existing radiotherapy equipment, it is found that the commonly used radiotherapy equipment cobalt-60 treatment machine in China, as well as some common linear accelerators s...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/1042A61N5/1067
Inventor 李艳文李双陈子明韩阿蒙黄真张立杰董志奎李萌赵琛
Owner YANSHAN UNIV