CN209967448U

CN209967448U - Energy conversion device and energy conversion accelerator treatment device

Info

Publication number: CN209967448U
Application number: CN201721715206.8U
Authority: CN
Inventors: 姚毅
Original assignee: SUZHOU LINATECH MEDICAL TECHNOLOGY Co Ltd
Current assignee: SUZHOU LINATECH MEDICAL TECHNOLOGY Co Ltd
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2020-01-21
Anticipated expiration: 2027-12-11

Abstract

The utility model discloses a become can device and become can accelerator treatment device, the utility model discloses creative adoption is the ray energy change that reaches the disease health simple and reliable technical scheme, with the help of shielding subassembly (like tungsten metal plate and any part that can obstruct the ray and pass) separation part ray for the energy of this part ray is blocked and is abandoned, it will not be launched the orientation again by obstructed ray to recycle reflection assembly, form a brand-new bundle of rays, because can utilize the marginal portion's of former bundle of rays ray, its energy level is less than the central region's of former bundle of rays ray, consequently, can reach the purpose of adjusting the ray energy level of reacing the disease health.

Description

Energy conversion device and energy conversion accelerator treatment device

Technical Field

The utility model relates to an accelerator treatment device, concretely relates to variable energy device and variable energy accelerator treatment device.

Background

With the development of tumor radiology and material science, radiotherapy gradually advances into the "three-essence" era of precise positioning, precise planning and precise treatment as an important means for treating cancer. In the prior art, CT imaging is required to be carried out on a patient firstly, a treatment scheme is formulated, then positioning and radiotherapy are carried out on an accelerator therapeutic apparatus, and finally, the treatment dosage and the treatment effect are verified. In order to improve the working efficiency, it is desirable to integrate the imaging function of the KV level and the therapeutic function of the MV level into one device, and one solution is to modify the structure of the MV level accelerator so that it can generate two or more levels of radiation, and the low-energy radiation completes imaging and dose verification, and the high-energy radiation is used for therapy, but the structure is complex, and no device actually applied to clinical application is available at present. The other is that the KV level bulb tube and the KV level digital detection flat plate are directly installed on a frame of the MV level accelerator and are generally arranged at 90 degrees with a host of the MV level accelerator, and the KV level bulb tube and the KV level digital detection flat plate rotate along with the host, but the KV level bulb tube and the KV level digital detection flat plate need to rotate greatly when the MV level accelerator and the host rotate simultaneously, so that the host needs to rotate greatly during treatment and imaging, and the KV level bulb tube and the KV level digital detection flat. The utility model discloses the people has proposed a new scheme in the past, install KV level bulb and KV level digit detection flat board on an independent sliding ring, it is rotatory alone along the sliding ring to make it can be independent of MV level accelerator, thus, can the two relative position of independent control, reduce the rotation amplitude of main frame when switching treatment and formation of image are verified, improve work efficiency, however, because the FOV field angle of KV level bulb is a fixed value, and its and KV level digit detection flat board between the distance also generally fixed, consequently its imaging range is restricted (FOV field of view is not adjustable), need the KV level to shine the formation of image from a lot of angles, just can accomplish the image data that an information is accomplished more, its efficiency still remains to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a dual-energy accelerator treatment device with simple and reliable structure and effectively improved working efficiency.

In order to achieve the above purpose, the technical scheme of the utility model is that:

an energy converter is used for being installed in an accelerator treatment device and is positioned between an accelerator and a treatment bed, and a beam emitted by the accelerator passes through the energy converter and is maintained or changed in energy level by the energy converter.

The utility model discloses set up a physical variable device between accelerator and treatment bed (between accelerator and disease in essence), utilize the variable energy device to change the ray energy level when reacing the sick health to realize the purpose of accelerator a tractor serves several purposes, promote application efficiency for accelerator treatment facility and bring convenient solution.

Further, the energy conversion device comprises at least one stage of energy conversion unit, and each stage of energy conversion unit comprises:

a shield assembly for blocking a portion of the beam from passing;

and the reflecting component reflects part of the other part of rays, so that the reflected part of rays and the part of rays passing through the gap between the shielding component and the reflecting component are combined into a new beam.

The utility model discloses the creative ray energy who adopts very simple reliable technical scheme to realize arriving the disease health changes, with the help of shielding subassembly (like the part that tungsten metal plate and any other separation ray passed) separation part ray, make the energy of this part ray abandoned by blocking, it will not be by the ray of separation and launch the orientation again to recycle reflection assembly, form a brand-new bundle of rays, because can utilize the marginal portion's of former bundle of rays ray, its energy level is less than the central zone's of former bundle of rays ray, consequently, can reach the purpose of adjusting the ray energy level who reachs the disease health.

Further, the shielding component is at least one layer of horizontally arranged or approximately horizontally arranged shielding plate for blocking the beam.

Furthermore, the shielding plate is provided with a shielding plate driving device for driving the shielding plate to be close to or far away from the reflecting assembly.

Further, the shielding plate is composed of a plurality of shielding strips which are arranged side by side and can be independently close to or far away from the reflecting component.

Furthermore, the reflecting working surface of the reflecting assembly is a concave cylindrical surface.

Furthermore, the reflection assembly is provided with a reflection angle adjusting device for driving the reflection assembly to rotate around a horizontal shaft, and/or is also provided with a lifting device for driving the reflection assembly to ascend or descend along the vertical direction.

Further, the reflecting assembly is composed of a plurality of juxtaposed reflecting strips which can be individually close to or far from the shielding assembly.

Further, the thickness of the reflection assembly is larger than that of the shielding assembly.

The utility model also provides an accelerator treatment equipment becomes can method, including following step:

a step of blocking a part of rays by using a shielding assembly capable of blocking rays of the accelerator;

and reflecting part of the other part of rays by using the reflecting component, and combining the reflected part of rays and the part of rays passing through the gap between the shielding component and the reflecting component into a new beam.

The utility model also provides a become can accelerator treatment facility, including the become can device of any preceding claim, become can device and set up between accelerator and treatment bed.

Drawings

Fig. 1 is a schematic view of the present invention;

fig. 2 is a schematic diagram of an example of the present invention;

fig. 3 is a schematic diagram of another example of the present invention.

The corresponding part names indicated by the numbers and letters in the drawings:

1. a stage accelerator; 11. the ray bundle emitted by the accelerator; 121/122. boundary of beam emitted from accelerator; 123. the ray bundle emitted by the accelerator passes through the ray at the edge of the shielding component; 21. a shielding assembly; 22. a reflective component; 12. a beam of radiation reaching the patient's body; 1211. a beam boundary reflected by the reflecting assembly; 211. the shielding component is close to the edge formed by one end of the reflecting component; 221. the reflecting component is close to the edge formed at one end of the shielding component; 3. a therapeutic bed.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, a power converter is installed in an accelerator treatment apparatus between an accelerator 1 and a treatment couch 3, and a beam 11 (a beam emitted from the accelerator) emitted from the accelerator 1 passes through the power converter and is maintained or changed in energy level.

The utility model discloses set up a variable device between accelerator 1 and treatment bed 3 (between accelerator and disease in essence), utilize the variable energy device to change the ray energy level when reacing the sick health to realize the purpose of accelerator a tractor serves several purposes, promote application efficiency for accelerator treatment facility and bring convenient solution.

In practical applications, one possible solution is that the variable energy device includes at least one stage of variable energy unit (fig. 1 is an example of a stage of variable energy unit), and each stage of variable energy unit includes:

a shield assembly 21 for blocking a portion of the beam from passing;

the reflection assembly 22 reflects a part of the other part of the rays, so that the reflected part of the rays and the part of the rays passing through the gap between the shielding assembly 21 and the reflection assembly 22 are combined into a new beam 12 (a beam reaching the body of the patient).

In practical applications, the shielding assembly may employ at least one horizontally disposed or substantially horizontally disposed shielding plate for blocking the passage of the beam, as shown in fig. 2. Fig. 2 shows a scheme using a shielding plate. In practical applications, according to the requirement of the radiation beam reaching the patient's body, one end of the shielding plate close to the reflecting component may be made into an arc-shaped edge, as shown by the portion 211 in fig. 2 (the edge formed by one end of the shielding component close to the reflecting component may be made into an arc shape as required), and fig. 2 shows an inward arc, an outward arc, or other shapes, according to the required beam shape.

In practical application, in order to change energy and normally use the original accelerator beam for treatment, the shielding plate is provided with a shielding plate driving device for driving the shielding plate to be close to or far away from the reflecting component.

As shown in fig. 3, in order to more conveniently adjust the shape of the edge formed at the end of the shielding member near the reflecting member, thereby adjusting the shape of the edge of the ray, the shielding plate is composed of a plurality of shielding strips which are arranged side by side and can be independently close to or far from the reflecting member. This is similar to using a single-sided multi-leaf collimator as the shielding component. In practical application, one side blade in multi-blade collimation on the original accelerator treatment equipment can be used as a shielding component, and the purposes of saving space and cost are achieved.

In practical applications, the reflecting working surface of the reflecting assembly may be designed as a concave cylindrical surface in order to control the shape of the boundary of the beam reaching the patient's body.

In practical application, the reflection assembly is provided with a reflection angle adjusting device for driving the reflection assembly to rotate around a horizontal shaft, and/or is further provided with a lifting device for driving the reflection assembly to ascend or descend along the vertical direction. This may provide more convenience for control.

In some embodiments, the reflective assembly may be comprised of a plurality of reflective strips juxtaposed to be individually movable toward and away from the shield assembly for more precise control of the shape of the boundary of the beam reaching the patient's body.

Generally, the thickness of the reflective component should be greater than the thickness of the shielding component.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.

Claims

1. An energy conversion device is characterized in that the energy conversion device is used for being installed in an accelerator treatment device and is positioned between an accelerator and a treatment bed, and a beam emitted by the accelerator passes through the energy conversion device and is kept or changed in energy level by the energy conversion device; the energy conversion device comprises at least one stage of energy conversion unit, and each stage of energy conversion unit comprises:

a shield assembly for blocking a portion of the beam from passing;

2. The energy transforming device according to claim 1, wherein said shielding assembly is at least one layer of horizontally disposed or substantially horizontally disposed shielding plates for blocking the passage of the beam.

3. The energy transforming device of claim 2, wherein the shield plate is provided with a shield plate driving device for driving the shield plate closer to or farther from the reflector assembly.

4. The energy transforming device of claim 2, wherein said shield plate is comprised of a plurality of juxtaposed shield strips that can be individually brought closer to or farther from the reflective assembly.

5. The energy conversion device of claim 1, wherein the reflective working surface of the reflective assembly is a concave cylindrical surface.

6. The energy conversion device according to claim 5, wherein the reflection assembly is provided with a reflection angle adjustment device for rotating the reflection assembly around a horizontal axis, and/or is further provided with a lifting device for lifting or lowering the reflection assembly in a vertical direction.

7. The energy conversion device of claim 1, wherein the reflective assembly comprises a plurality of reflective strips juxtaposed to be individually adjacent to or remote from the shield assembly.

8. The energy transforming device of claim 1, wherein the thickness of the reflective assembly is greater than the thickness of the shielding assembly.

9. A variable energy accelerator treatment device comprising a variable energy device according to any one of claims 1 to 8, the variable energy device being disposed between an accelerator and a treatment couch.