Radiotherapy equipment with radiation protection device

Abstract

The utility model discloses radiotherapy equipment with a radiation protection device. By installing the radiation protection device, the particle beam can be blocked, the radiation protection device is also installed on the rack, the radiation protection device rotates along with the rack and the treatment head, and the radiation protection device and the treatment head are kept at the relative position all the time, so that the ultrahigh-dose-rate particle beam emitted by the treatment head is blocked. Therefore, the protection strength of the radiation shielding wall body of the treatment room is reduced, reconstruction of an extra-thick wall body or complex reconstruction and thickening of an existing radiotherapy machine room are avoided, Flash radiotherapy equipment can be easily applied to the existing machine room of a hospital, and the use cost of the Flash radiotherapy equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically, to a radiotherapy device with a radiation protection device. Background Art

[0002] Flash radiotherapy is a technology that uses ultra-high dose rate particle beam radiation to treat tumors deep in the body. Its advantages are that while killing tumor tissue, it can also significantly reduce damage to normal tissue, and the treatment time is extremely short. However, the average dose rate of particle rays during radiotherapy must be greater than a certain threshold (for example, >40Gy / s) to stimulate the Flash effect, and the corresponding instantaneous dose rate is even higher. These ultra-high dose rate particle beams place higher demands on radiation protection.

[0003] The existing technology generally involves modifying the shielding wall of the radiotherapy room, for example, by thickening it, pre-embedded lead plates, etc. However, the above method is costly and is limited by the hospital's own building structure, so it is actually difficult to modify it to meet the corresponding radiation protection requirements. Utility Model Content

[0004] The utility model overcomes the shortcomings of the prior art and provides a radiotherapy device with a radiation protection device, so as to solve the problem that the existing radiation protection requires the reconstruction of the building.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A radiotherapy device with a radiation protection device, comprising the radiation protection device, a frame, and a treatment head;

[0007] The radiation protection device and the treatment head are installed on the frame, and a shield is arranged in the radiation protection device, and the shield is located in the particle beam emission direction of the treatment head;

[0008] The frame is rotatable, and the radiation protection device and the treatment head move with the frame when the frame rotates;

[0009] During the following process, the shielding material in the radiation protection device is always located in the particle beam emission direction of the treatment head.

[0010] When using flash radiotherapy equipment, the radiation protection device is installed in the direction of the beam exit, and the shielding inside the radiation protection device is on the moving track of the particle beam to block the emitted ultra-high dose rate particle beam, such as X-ray beam, electron beam, etc. The ultra-high dose rate particle beam here can be the particle beam directly emitted by the treatment head, or it can be the particle beam after passing through human tissue.

[0011] Since the treatment head rotates with the frame when in use, the radiation protection device is also installed on the frame. The radiation protection device rotates with the frame and the treatment head, always maintaining a relative position with the treatment head to block the ultra-high dose rate particle beam emitted by the treatment head.

[0012] A further technical solution is that the radiation protection device further includes a shielding shell and a mounting portion;

[0013] The shielding shell has a cavity inside, an opening is provided at the top of the cavity, and the shielding object is arranged in the cavity through the opening;

[0014] The mounting portion is used to connect the shielding shell to the frame.

[0015] The shielding shell is mainly used to isolate shielding objects, and the mounting portion is used to connect the shielding shell and the frame.

[0016] By installing radiation protection devices, particle beams can be blocked and most of the radiation energy of the particle beams can be consumed, thereby reducing the protection strength of the radiation shielding walls of the treatment room, avoiding the reconstruction of extra-thick walls or the complicated reconstruction and thickening of existing radiotherapy rooms, so that Flash radiotherapy equipment can be more easily used in the existing machine rooms of the hospital, reducing the use cost of Flash radiotherapy equipment.

[0017] A further technical solution is that the shielding material is a radiation protection material;

[0018] The radiation protection material is arranged in the cavity by solid casting, processing or stacking.

[0019] The radiation protection material can be a metal material with a high atomic number such as a tungsten block or a lead block. The material and thickness of the radiation protection material can be determined according to the radiation intensity of the particle beam to be blocked. The radiation protection material can be cast in the cavity of the shielding shell by pouring. This method is more convenient during installation, but more troublesome during subsequent adjustment or removal. By superimposing the existing radiation protection material plate in the cavity, it is more convenient during subsequent adjustment and removal.

[0020] A further technical solution is that the radiation protection device also includes a cover plate, which is installed on the opening to prevent the shielding object from contacting the outside.

[0021] A further technical solution is that the radiation protection device is provided with reinforcing ribs, and the reinforcing ribs include longitudinal reinforcing ribs and transverse reinforcing ribs.

[0022] Since the shielding material has a large mass, longitudinal and transverse reinforcement ribs are provided to ensure a stable installation and prevent damage during subsequent use.

[0023] A further technical solution is that the number of the transverse reinforcing ribs is 3;

[0024] The transverse reinforcement ribs include front transverse reinforcement ribs and rear transverse reinforcement ribs, and the front transverse reinforcement ribs and rear transverse reinforcement ribs are triangular;

[0025] The front transverse reinforcing rib is arranged between the shielding shell and the mounting portion, and the rear transverse reinforcing rib is arranged on the mounting portion.

[0026] The rear transverse reinforcement ribs are mainly used to strengthen the installation part, and the front transverse reinforcement ribs are mainly used to increase the strength between the shielding shell and the installation part.

[0027] A further technical solution is that a weight-reducing hole is provided on the shielding shell.

[0028] A further technical solution is that a plurality of longitudinal partitions are arranged inside the shielding shell, and the longitudinal partitions can further increase the strength of the shielding shell.

[0029] Compared with the prior art, the utility model has at least the following beneficial effects: installing a radiation protection device can block the particle beam, and the radiation protection device is also installed on the frame, and the radiation protection device rotates with the frame and the treatment head, and always maintains a relative position with the treatment head to block the ultra-high dose rate particle beam emitted by the treatment head. Thereby reducing the protection strength of the radiation shielding wall of the treatment room, avoiding the reconstruction of the extra-thick wall or the complicated reconstruction and thickening of the existing radiotherapy room, so that the Flash radiotherapy equipment can be more easily applied to the existing hospital room, reducing the use cost of the Flash radiotherapy equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of the radiation protection device;

[0031] Figure 2 This is a schematic diagram of the cross-sectional structure of the radiation protection device;

[0032] Figure 3 This is a schematic diagram of the structure of radiotherapy equipment.

[0033] In the figure, 1-radiation protection device, 11-shielding shell, 112-longitudinal partition, 12-installing part, 13-shielding object, 14-reinforcement rib, 141-longitudinal reinforcement rib, 142-transverse reinforcement rib, 1421-front transverse reinforcement rib, 1422-rear transverse reinforcement rib, 145-longitudinal partition, 15-cover plate, 16-weight reduction hole, 2-frame, 3-treatment head. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] A radiotherapy device with a radiation protection device, see Figure 3 , including a radiation protection device 1, a frame 2, and a treatment head 3;

[0036] The radiation protection device 1 and the treatment head 3 are installed on the frame 2. A shielding material 13 is provided inside the radiation protection device 1. The shielding material 13 of the radiation protection device 1 is located in the particle beam emission direction of the treatment head 3 and is used to block the particle beam to prevent the environmental radiation from exceeding the standard.

[0037] The frame 2 is rotatable, and the radiation protection device 1 and the treatment head 3 move with the frame 2 when the frame 2 rotates; during the movement, the shielding material 13 in the radiation protection device 1 is always located in the particle beam emission direction of the treatment head 3.

[0038] See also Figure 2 In this embodiment, the radiation protection device 1 includes a shielding shell 11, a mounting portion 12, and a shield 13. The shield 13 is made of a radiation shielding material, mainly a metal material with a high atomic number, such as lead in this embodiment, which is mainly used to block particle beams and reduce the radiation intensity acting on the environment; the specific form of the shield 13 is not limited. For example, when lead is used in this embodiment, due to its low melting point, it can be cast in the shielding shell 11 by casting. Of course, processed lead blocks or multiple lead plates can also be stacked and fixed in the shielding shell 11. In order to facilitate casting or taking and placing lead blocks and lead plates, an opening 111 is also provided on the shielding shell.

[0039] The shielding shell 11 is coated on the outer surface of the shielding material 13, or forms a cavity structure, and the shielding material 13 is installed in the cavity. The shielding shell 11 is mainly used to isolate the shielding material 13 from the external environment. For example, when the shielding material 13 is lead, the shielding shell 11 isolates the lead shielding material 13 from the external environment to prevent people from contacting the lead shielding material 13.

[0040] In a preferred embodiment, the radiation protection device 1 further comprises a cover plate 15 , wherein the cover plate 15 is installed on the opening 111 to prevent the shielding from contacting the outside.

[0041] In order to apply the radiation protection device 1 to actual equipment, the radiation protection device 1 further includes a mounting portion 12, which is disposed at the rear of the shielding shell 11 and is used to connect to other equipment, such as the rack 2 in this embodiment. The radiation protection device 1 is also provided with reinforcing ribs 14, which include longitudinal reinforcing ribs 141 and transverse reinforcing ribs 142;

[0042] In a preferred embodiment, the number of transverse reinforcing ribs 142 is 3, and the transverse reinforcing ribs 142 include a front transverse reinforcing rib 1421 and a rear transverse reinforcing rib 1422, and the front transverse reinforcing rib 1421 and the rear transverse reinforcing rib 1422 are triangular;

[0043] The front transverse reinforcing rib 1421 is disposed between the shielding shell 11 and the mounting portion 12 , and the rear transverse reinforcing rib 1422 is disposed on the mounting portion 12 .

[0044] See also Figure 3 In this embodiment, the shielding shell 11 is provided with weight-reducing holes 16. There are four weight-reducing holes 16 on the mounting portion 12, and four weight-reducing holes 16 are provided at the portion where the mounting portion 12 and the shielding shell 11 meet. In order to ensure the strength of the shielding shell 11, a plurality of longitudinal partitions 112 are provided inside the shielding shell 11.

[0045] When using the radiation protection device 1, it is necessary to first determine the beam exit direction of the flash radiotherapy device, and set the shield in the radiation protection device 1 in the emission direction of the particle beam. The thickness of the shield is designed according to the radiation intensity of the particle beam, such as the thickness of the lead block in this embodiment, and multiple pieces of lead blocks are stacked and fixed in the cavity of the radiation protection device 1, or the lead blocks are cast or processed according to the designed thickness. After the installation or casting is completed, the cover plate 15 is installed on the opening 111.

[0046] After completing the above installation, the radiation protection device 1 is also installed on the frame 2. When the treatment head 3 rotates with the frame 2, the radiation protection device 1 follows the frame 2 and rotates together with the treatment head 3, and always maintains a relative position with the treatment head 3. The shielding 13 can block the ultra-high dose rate particle beam emitted by the treatment head 3 during operation, such as X-ray beams, electron beams, etc., thereby reducing the protection strength of the radiation shielding wall of the treatment room.

[0047] Although the utility model is described herein with reference to the illustrative embodiments of the utility model, it should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in the present application. More specifically, within the scope disclosed in the present application, multiple variations and improvements can be made to the components and / or layout of the subject combination layout. In addition to the variations and improvements made to the components and / or layout, other uses will also be obvious to those skilled in the art.

Claims

1. A radiotherapy device with a radiation protection device, characterized in that: Including radiation protection device, rack, treatment head; The radiation protection device and the treatment head are installed on the frame, and a shield is arranged in the radiation protection device, and the shield is located in the particle beam emission direction of the treatment head; The frame is rotatable, and the radiation protection device and the treatment head move with the frame when the frame rotates; During the following process, the shielding material in the radiation protection device is always located in the particle beam emission direction of the treatment head.

2. A radiotherapy device with a radiation protection device as claimed in claim 1, characterized in that: The radiation protection device also includes a shielding shell and a mounting portion; The shielding shell has a cavity inside, an opening is provided at the top of the cavity, and the shielding object is arranged in the cavity through the opening; The mounting portion is used to connect the shielding shell to the frame.

3. A radiotherapy device with a radiation protection device as claimed in claim 1, characterized in that: The shielding material is a radiation protection material; The radiation protection material is arranged in the cavity by solid casting, processing or stacking.

4. A radiotherapy device with a radiation protection device as claimed in claim 2, characterized in that: The radiation protection device also includes a cover plate, which is installed on the opening to prevent the shielding object from contacting the outside.

5. The radiotherapy device with a radiation protection device according to claim 1, characterized in that: The radiation protection device is provided with reinforcing ribs, and the reinforcing ribs include longitudinal reinforcing ribs and transverse reinforcing ribs.

6. A radiotherapy device with a radiation protection device as claimed in claim 5, characterized in that: The number of transverse reinforcing ribs is 3; The transverse reinforcement ribs include front transverse reinforcement ribs and rear transverse reinforcement ribs, and the front transverse reinforcement ribs and rear transverse reinforcement ribs are triangular; The front transverse reinforcing rib is arranged between the shielding shell and the mounting portion, and the rear transverse reinforcing rib is arranged on the mounting portion.

7. The radiotherapy device with a radiation protection device according to claim 2, characterized in that: The shielding shell is provided with weight-reducing holes.

8. The radiotherapy device with a radiation protection device according to claim 2, characterized in that: A plurality of longitudinal partitions are arranged inside the shielding shell.

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