CN112295118A

CN112295118A - Cobalt 60 gamma ray radiotherapy device

Info

Publication number: CN112295118A
Application number: CN202011252832.4A
Authority: CN
Inventors: 陈继红
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-02-02

Abstract

The invention relates to a cobalt 60 gamma ray radiotherapy device, which comprises a radiotherapy body and a treatment bed, wherein a plurality of source bodies are arranged on the radiotherapy body, each source body comprises a cobalt 60 gamma ray source and a collimator matched with each cobalt 60 gamma ray source, the cobalt 60 gamma ray sources are arranged on the same plane in a circular guide rail, rays emitted by the cobalt 60 gamma ray sources after being collimated by the collimators are focused on a focus, the cobalt 60 gamma ray sources are arranged on the same circumference, and the driving mechanism drives the source bodies to do circular motion around the focus along the circumference on the radiotherapy body. Therefore, the radiation beam is easy to shield and control, the protection of organs needing to be protected is facilitated, the intensity adjustment is facilitated, the dose intensity adjustment is more convenient, the 360-degree full-angle irradiation is more accurate, the treatment range is large, and the treatment is omnibearing; the treatment is flexible, and a treatment plan is convenient to design; the tumor dose intensity is more accurately adjusted.

Description

Cobalt 60 gamma ray radiotherapy device

Technical Field

The invention belongs to the technical field of medical equipment, and particularly relates to a cobalt 60 gamma ray radiotherapy device.

Background

The tumor is a common frequently-occurring disease, the cobalt 60 gamma ray radiation therapy device is a common therapy device, also called a stereotactic gamma ray radiation therapy system, and is a therapeutic device integrating modern computer technology, stereotactic technology and surgical technology, the gamma ray radiation therapy device focuses the gamma ray emitted by cobalt 60 geometrically and focuses the gamma ray on the focus, and the tissue in target spot is destroyed in a disposable and lethal way, while the ray has almost no harm to the normal tissue of human body and has sharp dose reduction, so the therapeutic irradiation range is very obvious from the normal tissue boundary, the edge is as common as knife cutting, so the device is also called as 'gamma knife', the cobalt 60 gamma ray radiation therapy device utilizes the gamma ray emitted by cobalt 60 to focus on the tumor part of human body directionally, thereby destroying the tumor, the existing cobalt 60 gamma ray radiation therapy device comprises a radiation therapy body and a therapy bed, be provided with a plurality of cobalt 60 gamma ray sources on the radiation therapy body and with every cobalt 60 gamma ray source assorted collimator, a plurality of cobalt 60 gamma ray sources arrange on the partial spheroid of a cubical space, the ray that a plurality of cobalt 60 gamma ray sources sent after being collimated by the collimator from the cubical direction of space focuses on a focus, because the ray that a plurality of cobalt 60 gamma ray sources sent after being collimated by the collimator from the cubical direction of space focuses on a focus, the source focus is the spheroid, lead to the flexibility not strong, be difficult to shield control ray bundle, be unfavorable for protecting the organ that needs the protection, dose intensity adjustment is inconvenient also accurate inadequately.

Disclosure of Invention

The invention provides a cobalt 60 gamma ray radiotherapy device, which aims to solve the technical problems that the existing cobalt 60 gamma ray radiotherapy device is not strong in flexibility, is not easy to shield and control ray beams, is not beneficial to protecting organs to be protected, and is inconvenient and inaccurate in dose intensity adjustment.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a cobalt 60 gamma ray radiotherapy device, includes radiotherapy body and treatment couch, be provided with a plurality of source body on the radiotherapy body, every source body include cobalt 60 gamma ray source and with every cobalt 60 gamma ray source assorted collimator, characterized by still includes actuating mechanism, a plurality of cobalt 60 gamma ray source arrange on the coplanar in the circular guide rail, a plurality of cobalt 60 gamma ray source by the ray focus that sends after the collimator collimation is in a focus, a plurality of cobalt 60 gamma ray source is arranged on same circumference, actuating mechanism drive the source body is in follow on the radiotherapy body the circumference is around focus is circular motion.

The radiotherapy body is provided with a circular track, the circular track is provided with a circular guide rail which can rotate circumferentially relative to the circular track, each source body is fixedly arranged on an inner ring of the circular track, and the circular guide rail can rotate around the focus under the action of a driving mechanism.

The radiotherapy body is provided with a circular track and a gear ring, one end of the source body is slidably connected with the circular track through a sliding block, the driving mechanism is a driving motor, the driving mechanism is connected with the source body and is connected with the gear ring through a gear, and when the driving motor rotates, the gear is driven to rotate around the gear ring on the track.

The circular guide rail periphery is provided with the gear, actuating mechanism is driving motor, driving motor with carry out the transmission through gear or gear train between the circular guide rail periphery.

The source bodies are uniformly distributed on the radiotherapy body.

The radiotherapy body is an annular body.

The number of source bodies is one or more.

The treatment bed is a treatment bed capable of reciprocating.

Each source body further comprises a shield, and each cobalt-60 gamma ray source is arranged in the shield.

After the technical scheme is adopted, the device also comprises a driving mechanism, the plurality of cobalt 60 gamma ray sources are arranged on the same plane in the circular guide rail, rays emitted by the plurality of cobalt 60 gamma ray sources after being collimated by the collimator are focused on a focus, the plurality of cobalt 60 gamma ray sources are arranged on the same circumference, the driving mechanism drives the source body to do circular motion around the focus along the circumference on the radiotherapy body, and the source focus is a plane point rather than a sphere, so that the device is easy to shield and control ray beams, is beneficial to protecting organs needing to be protected, is beneficial to intensity adjustment, is more convenient to adjust dosage intensity, can irradiate at a full angle of 360 degrees more accurately, and has a large treatment range and omnibearing treatment; the treatment is flexible, and a treatment plan is convenient to design; the tumor dose intensity is more accurately adjusted.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the cobalt 60 gamma ray radiotherapy device of the present invention.

FIG. 2 is a schematic structural diagram of a radiotherapy body in a cobalt 60 gamma ray radiotherapy device according to a first embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a second embodiment of a radiation therapy body in the cobalt 60 gamma ray radiation therapy device of the present invention.

FIG. 4 is an enlarged view of the radiation therapy body of the cobalt 60 gamma ray radiation therapy device according to the second embodiment of the present invention, and the source body of FIG. 3 is located at a position thereof.

FIG. 5 is a schematic cross-sectional view taken along the direction A in FIG. 3 of an embodiment of a radiation therapy body of the cobalt 60 gamma ray radiation therapy device of the present invention.

FIG. 6 is a schematic cross-sectional view taken along the direction B in FIG. 3 of an exemplary radiation therapy body of the cobalt 60 gamma ray radiation therapy device of the present invention.

The meanings of each mark in the figure are as follows: the radiation therapy device comprises a radiation therapy body 1, a therapy bed 2, a cobalt 60 gamma ray source 3, a shielding body 4, a collimator 5, a source seat 6, a focus O, a driving motor 7, a circular track 8, a circular guide rail 9, a sliding block 10 and a gear ring 11.

Detailed Description

Example one

As shown in fig. 1 and 2, a cobalt 60 gamma ray radiotherapy device comprises a radiotherapy body 1 and a treatment couch 2, wherein a plurality of source bodies are arranged on the radiotherapy body 1, each source body comprises a cobalt 60 gamma ray source 3 and a collimator 5 matched with each cobalt 60 gamma ray source 3, and further comprises a driving mechanism, the cobalt 60 gamma ray sources 3 are arranged on the same plane in a circular guide rail 9, rays emitted by the cobalt 60 gamma ray sources 3 after being collimated by the collimators 5 are focused on a focus O, the cobalt 60 gamma ray sources 3 are arranged on the same circumference, the driving mechanism drives the source bodies to circularly move around the focus O on the radiotherapy body 1 along the circumference, a circular rail 8 is arranged on the radiotherapy body 1, a circular guide rail 9 which can circularly rotate relative to the circular rail 8 on the circular rail 8 is arranged on the circular rail 8, each source body is fixedly arranged on an inner ring of a circular track 8 through a source seat 6, a circular guide rail 9 can rotate around a focus O under the action of a driving mechanism, gears are arranged on the periphery of the circular guide rail 9, the driving mechanism is a driving motor 7, the driving motor 7 and the periphery of the circular guide rail 9 are in transmission through gears or gear sets, a plurality of source bodies are uniformly distributed on a radiotherapy body 1, the radiotherapy body 1 is an annular body, one or more source bodies are arranged, a treatment bed 2 is a treatment bed 2 capable of reciprocating, each source body further comprises a shielding body 4, and each cobalt-60 gamma ray source 3 is respectively arranged in the shielding body 4.

Example two

As shown in fig. 1, 3, 4, 5, 6, a cobalt 60 gamma ray radiotherapy apparatus comprises a radiotherapy body 1 and a treatment couch 2, wherein a plurality of source bodies are arranged on the radiotherapy body 1, each source body comprises a cobalt 60 gamma ray source 3 and a collimator 5 matched with each cobalt 60 gamma ray source 3, and further comprises a driving mechanism, the cobalt 60 gamma ray sources 3 are arranged on the same plane in a circular guide rail 9, rays emitted by the cobalt 60 gamma ray sources 3 after being collimated by the collimators 5 are focused on a focus O, the cobalt 60 gamma ray sources 3 are arranged on the same circumference, the driving mechanism drives the source bodies to do circular motion around the focus O along the circumference on the radiotherapy body 1, a circular rail 8 and a gear ring 11 are arranged on the radiotherapy body 1, one end of the source bodies is fixedly connected through a source seat 6 sliding block 10, the source seat 6 is slidably connected with the circular rail 8, the driving mechanism is a driving motor 7, the driving mechanism is connected with the source body and is connected with the gear ring 11 through a gear, and when the driving motor 7 rotates, the driving gear rotates around the gear ring 11 on the track. In the present embodiment, the radiotherapy body 1 is provided with one source, but may be provided with a plurality of sources.

Because the device also comprises a driving mechanism, the cobalt 60 gamma ray sources 3 are arranged on the same plane in the circular guide rail 9, the rays emitted by the cobalt 60 gamma ray sources 3 after being collimated by the collimator 5 are focused on a focus O, the cobalt 60 gamma ray sources 3 are arranged on the same circumference, the driving mechanism drives the source body to do circular motion around the focus O along the circumference on the radiotherapy body 1, and the source focus O is a plane point rather than a sphere, therefore, the device is easy to shield and control ray beams, is beneficial to protecting organs needing to be protected, is beneficial to intensity adjustment, is more convenient to dose intensity adjustment, can irradiate at a full angle of 360 degrees more accurately, and has a large treatment range and omnibearing treatment; the treatment is flexible, and a treatment plan is convenient to design; the tumor dose intensity is more accurately adjusted.

Claims

1. The utility model provides a cobalt 60 gamma ray radiotherapy device, includes radiotherapy body and treatment couch, be provided with a plurality of source body on the radiotherapy body, every source body include cobalt 60 gamma ray source and with every cobalt 60 gamma ray source assorted collimator, characterized by still includes actuating mechanism, a plurality of cobalt 60 gamma ray source arrange on the coplanar in the circular guide rail, a plurality of cobalt 60 gamma ray source by the ray focus that sends after the collimator collimation is in a focus, a plurality of cobalt 60 gamma ray source is arranged on same circumference, actuating mechanism drive the source body is in follow on the radiotherapy body the circumference is around focus is circular motion.

2. The cobalt 60 gamma ray radiation therapy device as claimed in claim 1, wherein said radiation therapy body is provided with a circular track, said circular track is provided with a circular guide rail capable of rotating circumferentially relative to said circular track on said circular track, each source body is fixedly arranged on an inner ring of said circular track, and said circular guide rail is capable of rotating around said focus under the action of a driving mechanism.

3. The cobalt 60 gamma ray radiation therapy device as claimed in claim 1, wherein said radiation therapy body is provided with a circular track and a gear ring, one end of said source body is slidably connected with said circular track through a slider, said driving mechanism is a driving motor, said driving mechanism is connected with said source body and is connected with said gear ring through a gear, when said driving motor rotates, said gear is driven to rotate on the track around the gear ring.

4. The cobalt 60 gamma ray radiation therapy device as claimed in claim 2, wherein the periphery of said circular guide rail is provided with gears, said driving mechanism is a driving motor, and said driving motor and the periphery of said circular guide rail are driven by gears or gear sets.

5. The cobalt 60 gamma ray radiation therapy device according to any one of claims 1 to 4, wherein said plurality of source bodies are distributed evenly over said radiation therapy body.

6. The cobalt 60 gamma ray radiation therapy device according to any one of claims 1 to 4, wherein said radiation therapy body is an annular body.

7. The cobalt 60 gamma ray radiation therapy device according to any one of claims 1 to 4, wherein said plurality of source bodies is one or more.

8. The cobalt 60 gamma ray radiation therapy device as claimed in any one of claims 1 to 4, wherein the treatment couch is a reciprocatable treatment couch.

9. The cobalt 60 gamma ray radiation therapy device of claim 8, wherein each of said source bodies further comprises a shield, each cobalt 60 gamma ray source being disposed within a respective shield.