Self-shielding device and shielding method for radiotherapy

Abstract

The invention relates to a self-shielding device for radiotherapy and a shielding method. The self-shielding device comprises an electronic flash therapy equipment base; the electronic flash therapy shell is rotationally assembled on the electronic flash therapy equipment base; the high-energy electron accelerator is arranged in the electron flash therapy shell and is used for providing pulse electron beams; the electronic flash therapy head is assembled at the end part of the electronic flash therapy shell, and the tail end of the electronic flash therapy head is used for irradiating the irradiation device; the irradiation device is located on the electronic flash therapy equipment base, and the guide rail is located between the electronic flash therapy equipment base and the electronic flash therapy shell and used for adjusting the position relation between the electronic flash therapy shell and the irradiation device; the sliding sleeve assembly is assembled on the electronic flash therapy head and is arranged corresponding to the irradiation device; moreover, the sliding sleeve assembly is separated from or abuts against the irradiation device. The electronic flash therapy device is simple in structure, the sliding sleeve assembly is arranged, and the sliding sleeve assembly is matched with the electronic flash therapy shell and the irradiation device, so that radiation can be effectively blocked.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a self-shielding device and a shielding method for radiotherapy. Background Art

[0002] Radiotherapy has become one of the main methods for treating cancer. According to statistics, more than 70% of cancer patients need to be treated with radiotherapy alone or in combination with radiotherapy.

[0003] Flash radiotherapy is a new type of radiotherapy technology, which is characterized by delivering high doses of radiation to tumor tissue in a very short time (usually milliseconds). Compared with traditional low-dose rate radiotherapy, Flash radiotherapy can effectively kill tumor cells while reducing damage to normal tissues. Flash radiotherapy has the following advantages over traditional low-dose rate radiotherapy:

[0004] 1. Flash radiotherapy can deliver high doses of radiation to tumor tissue in a short period of time, effectively killing tumor cells;

[0005] 2. Flash radiotherapy can effectively kill tumor cells while reducing damage to normal tissues, which makes it have good biological effects;

[0006] 3. Flash radiotherapy treatment time is usually only a few seconds, which allows patients to complete the treatment in a short time and reduce their pain;

[0007] Flash radiotherapy technology is still in the preclinical research stage, but it has broad application prospects and is expected to bring revolutionary breakthroughs in tumor treatment. At present, the mechanism of flash radiotherapy is still unclear, and more experimental studies are needed on small animal models to verify the efficacy of flash radiotherapy on different types of tumors and the protective effect on different normal tissues, and to further clarify its mechanism of action. Therefore, the development of small animal flash radiotherapy equipment and systematic research on small animal models will be an important step in promoting the transformation of this technology to clinical applications in the future; however, in animal experiments on flash radiotherapy equipment, it is necessary to ensure that the radiation will not cause harm to the surrounding environment and operators when performing flash radiotherapy operations. Current radiotherapy equipment has certain deficiencies in self-shielding and cannot meet the needs of animal experiments well.

[0008] In view of the above technical problems, improvements need to be made. Summary of the invention

[0009] The present invention is to overcome the defects in the prior art and provide a self-shielding device and a shielding method for radiotherapy.

[0010] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0011] A self-shielding device for radiotherapy, comprising

[0012] Electronic flash therapy device base;

[0013] The electronic flash therapy housing is rotatably mounted on the electronic flash therapy device base;

[0014] A high-energy electron accelerator, built into the electron flash therapy housing, is used to provide a pulsed electron beam;

[0015] The electronic flash therapy head is assembled at the end of the electronic flash therapy housing. The end of the electronic flash therapy head is used to irradiate the irradiation device. The irradiation device is located on the base of the electronic flash therapy device.

[0016] A guide rail, which is located between the electronic flash therapy device base and the electronic flash therapy housing and is used to adjust the positional relationship between the electronic flash therapy housing and the irradiation device;

[0017] The sliding sleeve assembly is assembled on the electronic flash therapy head and arranged corresponding to the irradiation device; and the sliding sleeve assembly is separated from or abutted against the irradiation device.

[0018] As a preferred embodiment of the present invention, the sliding sleeve assembly is arranged along the length direction of the electronic flash therapy shell, and the sliding sleeve assembly includes an inner sleeve and an outer sleeve; the inner sleeve and the outer sleeve are coaxially arranged, and the outer sleeve is slidably assembled on the outside of the inner sleeve.

[0019] As a preferred embodiment of the present invention, a convex ring is formed at the bottom of the inner sleeve, and a positioning ring is formed on the inner side of the top of the outer sleeve; a sealing ring is sleeved on the bottom of the inner sleeve; and the sealing ring is located between the convex ring and the positioning ring.

[0020] As a preferred embodiment of the present invention, an upper guide hole is formed in the inner sleeve along the length direction; a lower guide hole is formed in the outer sleeve along the length direction, and the upper guide hole is communicated with the lower guide hole.

[0021] As a preferred embodiment of the present invention, the irradiation device includes a chassis, a shelf fixed on the chassis, a shelf block formed in the middle of the shelf; a guide groove matched with the outer sleeve is formed on the outer side of the shelf block; when the outer sleeve is built into the guide groove, the shelf is in a shielding state, and when the outer sleeve is away from the guide groove, the shelf is in a non-shielding state.

[0022] As a preferred embodiment of the present invention, the outer side of the electronic flash therapy housing is equipped with a driving device for driving the outer sleeve to slide up and down along the inner sleeve.

[0023] As a preferred embodiment of the present invention, the driving device comprises a driving motor, a driving shaft is mounted on the driving motor, and the other end of the driving shaft is fixedly arranged on the top of the outer sleeve.

[0024] As a preferred embodiment of the present invention, the outer side of the bottom of the outer sleeve is in an arc structure.

[0025] As a preferred embodiment of the present invention, the outer sleeve and the inner sleeve are both made of organic glass.

[0026] As a preferred embodiment of the present invention, the electronic flash therapy device base includes a positioning seat and a support frame; the electronic flash therapy shell is rotatably assembled at one end of the support frame, and the irradiation device is located at the other end of the support frame.

[0027] As a preferred embodiment of the present invention, the support frame is in an arc-shaped structure, a guide groove is formed inside the support frame, and the guide rail is in an arc-shaped structure. The guide rail is built into the guide groove and moves along the guide groove.

[0028] A shielding method for a radiotherapy device, the method comprising:

[0029] Step 1: Adjust the position of the base of the electronic flash therapy device so that the irradiation device is stably placed on the base of the electronic flash therapy device;

[0030] Step 2: Use the guide rail to adjust the position of the electronic flash therapy housing so that the sliding sleeve assembly corresponds to the position of the shelf block;

[0031] Step 3, placing the target object on the shelf block;

[0032] Step 4: Move the outer sleeve so that it moves downward along the inner sleeve, and the bottom of the outer sleeve is embedded in the guide groove; the outer sleeve and the shelf on the irradiation device are sealed with each other to complete the overall sealed shielding structure.

[0033] The beneficial effects of the present invention are:

[0034] 1. The present invention has a simple structure, and a sliding sleeve assembly is arranged on the electronic flash therapy head; thus, the electron beam generated by the high-energy electron accelerator passes through the sliding sleeve assembly and irradiates the irradiation device; the sliding sleeve assembly cooperates with the electronic flash therapy shell and the irradiation device to effectively block radiation; the device has a rounded appearance, which reduces stimulation and harm to animals.

[0035] 2. The present invention is cleverly designed and easy to operate: the outer sleeve can move up and down along the inner sleeve, making it convenient to fix the animal and perform electron beam irradiation operations.

[0036] 3. The self-shielding device of the present invention has a rounded overall appearance, which reduces stimulation and harm to animals and improves the success rate of animal experiments.

[0037] 4. The self-shielding device of the present invention is made of environmentally friendly materials: organic glass material is environmentally friendly and non-toxic, and will not cause pollution to animals and the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a side view of the first embodiment of the present invention;

[0039] Figure 2 Embodiment 1 of the present invention Figure 1 AA section view;

[0040] Figure 3 is a usage state diagram of the first embodiment of the present invention;

[0041] Figure 4 is a schematic structural diagram of an irradiation device according to a first embodiment of the present invention;

[0042] Figure 5 is a structural schematic diagram of a sliding sleeve assembly according to an embodiment of the present invention;

[0043] Figure 6 is a front view of a sliding sleeve assembly according to a first embodiment of the present invention;

[0044] Figure 7 Embodiment 1 of the present invention Figure 6 BB cross-sectional view;

[0045] Figure 8 is a side view of the second embodiment of the present invention;

[0046] Reference numerals in the figure: electronic flash therapy equipment base 1, electronic flash therapy shell 2, irradiation device 3, sliding sleeve assembly 4, convex ring 5, positioning ring 6, driving device 7, sealing ring 8, rotating assembly 9, positioning seat 10, supporting frame 11, rotating seat 12, guide groove 13, chassis 30, shelf seat 31, shelf block 32, guide groove 33, inner sleeve 40, outer sleeve 41, upper guide hole 42, lower guide hole 43, arc structure 44, driving motor 70, driving shaft 71, high energy electron accelerator 100, electronic flash therapy head 200, guide rail 300. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0048] Embodiment 1:

[0049] like Figure 1-Figure 7 As shown,

[0050] A self-shielding device for radiotherapy, comprising an electronic flash therapy device base 1; an electronic flash therapy shell 2, rotatably mounted on the electronic flash therapy device base 1; a high-energy electron accelerator 100, built into the electronic flash therapy shell 2, for providing a pulsed electron beam; an electronic flash therapy head 200, mounted on the end of the electronic flash therapy shell 1, the end of the electronic flash therapy head 200 is used to irradiate an irradiation device 3; the irradiation device 3 is located on the electronic flash therapy device base 1, and a guide rail 300 is located between the electronic flash therapy device base 1 and the electronic flash therapy shell 2, for adjusting the positional relationship between the electronic flash therapy shell 2 and the irradiation device 3; a sliding sleeve assembly 4, mounted on the electronic flash therapy head 200, and arranged corresponding to the irradiation device 3; and the sliding sleeve assembly 4 is separated from or abuts against the irradiation device 3.

[0051] By adopting the above scheme, the electron beam generated by the high-energy electron accelerator 100 located in the electron flash therapy housing 2 can swing at an angle of plus or minus 45 degrees. This design enables the electron beam to adjust its angle within a large range to adapt to different treatment sites and needs; and the provided sliding sleeve assembly 4 is assembled on the electron flash therapy head 200. In this way, the electron beam generated by the high-energy electron accelerator 100 passes through the sliding sleeve assembly 4 and irradiates the irradiation device 3. The sliding sleeve assembly 4 cooperates with the electron flash therapy housing 2 and the irradiation device 3 to effectively block radiation; the device has a rounded appearance, which reduces stimulation and harm to animals.

[0052] Specifically, refer to Figure 5-Figure 7 The sliding sleeve assembly 4 is arranged along the length direction of the electronic flash therapy housing 2, and the sliding sleeve assembly 4 includes an inner sleeve 40 and an outer sleeve 41; the inner sleeve 40 and the outer sleeve 41 are coaxially arranged, and the outer sleeve 41 is slidably assembled on the outside of the inner sleeve 40; the inner sleeve 40 and the outer sleeve 41 slide with each other, which greatly reduces the risk of radiation leakage. When the outer sleeve 41 rises, the animal can be fixed to the irradiation device 3, which is convenient and quick. After the outer sleeve 41 descends and is embedded in the guide groove 33 of the irradiation device 3, the electron beam irradiation can be carried out. At this time, the whole animal is in the shielding cover, ensuring the safety of radiation.

[0053] A convex ring 5 is formed at the bottom of the inner sleeve 40, and a positioning ring 6 is formed on the inner side of the top of the outer sleeve 41; a sealing ring 8 is sleeved on the bottom of the inner sleeve 40; the sealing ring 8 is located between the convex ring 5 and the positioning ring 6; through the mutual cooperation between the positioning ring 6 and the convex ring 5, the movement between the inner sleeve 40 and the outer sleeve 41 is achieved, and the separation between the inner sleeve 40 and the outer sleeve 41 can be prevented, and the sealing ring 8 is provided to ensure the sealing of the sliding between the outer sleeve 41 and the inner sleeve 40; the shaking between the inner sleeve 40 and the outer sleeve 41 is avoided, the inner sleeve 40 and the outer sleeve 41 fit each other, and the connection stability is better.

[0054] An upper guide hole 42 is formed in the inner sleeve 40 along the length direction; a lower guide hole 43 is formed in the outer sleeve 41 along the length direction, the upper guide hole 42 is connected to the lower guide hole 43, and the electronic flash therapy head 200 passes through the upper guide hole 42 and the lower guide hole 43 to irradiate the irradiation device 3.

[0055] For details, please refer to the attached Figure 4 As shown, the irradiation device 3 includes a chassis 30, a shelf 31 fixed on the chassis 30, a shelf block 32 is formed in the middle of the shelf 31; a guide groove 33 adapted to the outer sleeve 41 is formed on the outer side of the shelf block 32; when the outer sleeve 41 is built into the guide groove 33, the shelf 31 is in a shielding state, and when the outer sleeve 41 is away from the guide groove 33, the shelf 31 is in a non-shielding state.

[0056] By adopting the above scheme, a guide groove 33 is provided on the shelf 31, and the guide groove 33 cooperates with the outer sleeve 41. When the outer sleeve 41 falls, it can be embedded in the guide groove 33 to form a good seal and reduce radiation leakage; wherein, the groove width of the guide groove 33 is consistent with the tube wall thickness of the outer sleeve 41. In order to prevent the outer sleeve 41 from being more conveniently inserted into the guide groove 33, the outer side of the bottom of the outer sleeve 41 is in an arc structure 44; when the arc structure 44 of the outer sleeve 41 contacts the notch of the guide groove 33, the contact area between the two is increased, thereby improving the assembly efficiency between the outer sleeve 41 and the guide groove 33.

[0057] The outer sleeve 41 and the inner sleeve 40 are both made of organic glass to ensure the transparency and strength of the device. The irradiation status of the animal placed on the shelf block 32 can be observed in real time.

[0058] The electronic flash therapy device base 1 includes a positioning seat 10 and a support frame 11; the electronic flash therapy shell 2 is rotatably assembled on one end of the support frame 11, and the irradiation device 3 is located at the other end of the support frame 11; specifically, the positioning seat 10 and the support frame 11 improve the stability and safety of the entire device, and at the same time, also improve the operational flexibility: the angle of the electronic flash therapy shell 2 can be adjusted in real time according to actual conditions to provide patients with personalized treatment plans.

[0059] The support frame 11 is an arc-shaped structure, and a guide groove 13 is formed inside the support frame 11. The guide rail 300 is an arc-shaped structure, and the guide rail 300 is built in the guide groove 13 and moves along the guide groove 13. In this embodiment, by setting the guide rail 300, an arc-shaped sliding can be generated between the bracket with the arc guide rail 300 and the support frame 11, so that the electron flash therapy housing 2 can be slid to different levels. In this way, the electron beam in the high-energy electron accelerator 100 can be irradiated at different heights, further improving the flexibility and adaptability of the treatment.

[0060] A rotating seat 12 is fixedly provided on one side of the electronic flash therapy shell 2 close to the support frame 11, and a rotating component 9 is installed between the support frame 11 and the rotating seat 12; by setting the rotating seat 12 and the rotating component 9, the rotation angle of the electronic flash therapy shell 2 can be adjusted. At the same time, the above-mentioned structural design ensures the stability and accuracy of the rotating component 9 during operation.

[0061] A shielding method for a radiotherapy device, the method comprising:

[0062] Step 1: adjust the position of the electronic flash therapy device base 1 so that the irradiation device 3 is stably placed on the electronic flash therapy device base 1;

[0063] Step 2: Use the guide rail 300 to adjust the position of the electronic flash therapy housing 2 so that the position of the sliding sleeve assembly 4 corresponds to the position of the shelf block 32;

[0064] Step 3, placing the target object on the shelf block 32;

[0065] Step 4: Move the outer sleeve 41 downward along the inner sleeve 40, and embed the bottom of the outer sleeve 41 in the guide groove 33; the outer sleeve 41 and the shelf 31 on the irradiation device 3 are sealed to each other to complete the overall sealed shielding structure.

[0066] Embodiment 2:

[0067] like Figure 8 As shown, the outer side of the electronic flash therapy shell 2 is equipped with a driving device 7 for driving the outer sleeve 41 to slide up and down along the inner sleeve 40. Specifically, the driving device 7 includes a driving motor 70, and a driving shaft 71 is installed on the driving motor 70. The other end of the driving shaft 71 is fixed to the top of the outer sleeve 41.

[0068] It is not difficult to see from the above content that in actual use, the operator can control the driving device 7 to drive the outer sleeve 41 to move linearly along the length direction of the inner sleeve 40, so that when the outer sleeve 41 moves, the bottom of the outer sleeve 41 is embedded in the guide groove 33, so that the connection between the sliding sleeve assembly 4 and the irradiation device 3 is better sealed, which can prevent radiation from leaking from the gap, and has higher safety, ensuring the sealing of the equipment, preventing radiation leakage, and effectively protecting the safety of surrounding personnel and the environment.

[0069] For other contents in this embodiment, please refer to the first embodiment.

[0070] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0071] Although this article uses more of the figure markings: electronic flash therapy device base 1, electronic flash therapy shell 2, irradiation device 3, sliding sleeve assembly 4, convex ring 5, positioning ring 6, driving device 7, sealing ring 8, rotating assembly 9, positioning seat 10, support frame 11, rotating seat 12, guide groove 13, chassis 30, shelf seat 31, shelf block 32, guide groove 33, inner sleeve 40, outer sleeve 41, upper guide hole 42, lower guide hole 43, arc structure 44, drive motor 70, drive shaft 71, high energy electron accelerator 100, electronic flash therapy head 200, guide rail 300 and other terms, the possibility of using other terms is not excluded; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A self-shielding device for radiotherapy, characterized in that: include Electronic flash therapy device base (1); An electronic flash therapy housing (2) is rotatably mounted on the electronic flash therapy device base (1); A high-energy electron accelerator (100), built into the electron flash therapy housing (2), for providing a pulsed electron beam; The electronic flash therapy head (200) is mounted on the end of the electronic flash therapy housing (1), and the end of the electronic flash therapy head (200) is used to irradiate the irradiation device (3); the irradiation device (3) is located on the electronic flash therapy device base (1). A guide rail (300), the guide rail (300) is located between the electronic flash therapy device base (1) and the electronic flash therapy housing (2), and is used to adjust the positional relationship between the electronic flash therapy housing (2) and the irradiation device (3); A sliding sleeve assembly (4) is mounted on the electronic flash therapy head (200) and arranged corresponding to the irradiation device (3); The sliding sleeve assembly (4) is arranged along the length direction of the electronic flash therapy housing (2), and the sliding sleeve assembly (4) comprises an inner sleeve (40) and an outer sleeve (41); the inner sleeve (40) and the outer sleeve (41) are coaxially arranged, and the outer sleeve (41) is slidably assembled on the outside of the inner sleeve (40).

2. A self-shielding device for radiotherapy according to claim 1, characterized in that: A convex ring (5) is formed at the bottom of the inner sleeve (40), and a positioning ring (6) is formed on the inner side of the top of the outer sleeve (41); a sealing ring (8) is sleeved on the bottom of the inner sleeve (40); and the sealing ring (8) is located between the convex ring (5) and the positioning ring (6).

3. A self-shielding device for radiotherapy according to claim 1, characterized in that: An upper guide hole (42) is formed in the inner sleeve (40) along the length direction; a lower guide hole (43) is formed in the outer sleeve (41) along the length direction, and the upper guide hole (42) is communicated with the lower guide hole (43).

4. A self-shielding device for radiotherapy according to claim 1, characterized in that: The irradiation device (3) comprises a chassis (30), a shelf (31) fixedly mounted on the chassis (30), a shelf block (32) formed in the middle of the shelf (31); a guide groove (33) matched with an outer sleeve (41) is formed on the outer side of the shelf block (32); when the outer sleeve (41) is built into the guide groove (33), the shelf (31) is in a shielding state, and when the outer sleeve (41) is away from the guide groove (33), the shelf (31) is in a non-shielding state.

5. A self-shielding device for radiotherapy according to claim 1, characterized in that: The outer side of the electronic flash therapy housing (2) is equipped with a driving device (7) for driving the outer sleeve (41) to slide up and down along the inner sleeve (40); the driving device (7) comprises a driving motor (70), a driving shaft (71) is mounted on the driving motor (70), and the other end of the driving shaft (71) is fixedly arranged on the top of the outer sleeve (41).

6. A self-shielding device for radiotherapy according to claim 5, characterized in that: The outer side of the bottom of the outer sleeve (41) is in an arc structure (44).

7. A self-shielding device for radiotherapy according to claim 5, characterized in that: The outer sleeve (41) and the inner sleeve (40) are both made of organic glass.

8. A self-shielding device for radiotherapy according to claim 1, characterized in that: The electronic flash therapy device base (1) comprises a positioning seat (10) and a support frame (11); the electronic flash therapy housing (2) is rotatably mounted on one end of the support frame (11), and the irradiation device (3) is located at the other end of the support frame (11).

9. A self-shielding device for radiotherapy according to claim 8, characterized in that: The support frame (11) is in an arc-shaped structure, and a guide groove (13) is formed inside the support frame. The guide rail (300) is in an arc-shaped structure, and the guide rail (300) is built into the guide groove (13) and moves along the guide groove (13).

10. A shielding method for a radiotherapy device, characterized in that: Using the self-shielding device for radiotherapy according to any one of claims 1 to 9, the method comprises: Step (1), adjusting the position of the electronic flash therapy device base (1) so that the irradiation device (3) is stably placed on the electronic flash therapy device base (1); Step (ii), using the guide rail (300) to adjust the position of the electronic flash therapy housing (2) so that the position of the sliding sleeve assembly (4) corresponds to the position of the shelf block (32); Step (iii), placing the target object on the shelf block (32); Step (four), by moving the outer sleeve (41), the outer sleeve (41) moves downward along the inner sleeve (40), and the bottom of the outer sleeve (41) is embedded in the guide groove (33); the outer sleeve (41) and the shelf (31) on the irradiation device (3) are sealed with each other to complete the overall sealed shielding structure.

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