Self-shielding device and shielding method for radiotherapy equipment

Abstract

The invention relates to a self-shielding device for radiotherapy equipment, which comprises a shielding cabin, the shielding cabin is provided with an accommodating cavity with an opening in one side, and the radiotherapy equipment is arranged in the accommodating cavity; the shielding door is matched with the shielding cabin and is used for closing or opening the accommodating cavity with an opening in one side; the moving device is used for adjusting the position of the shielding door, so that the central point of the shielding door is aligned with the central point of the shielding cabin, and the shielding door is hermetically connected with the shielding cabin; by arranging the sealing structure, the sealing performance of connection between the shielding door and the shielding cabin is better, radiation can be prevented from leaking from a gap, the safety is higher, the sealing performance of equipment in a closed state is ensured, and radiation leakage is prevented.

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 equipment. 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] At present, the main method of tumor radiotherapy is flash therapy, which can reduce the damage to normal tissues while maintaining its lethality to tumors. Flash radiotherapy (Flash-RT) is a cutting-edge technology and research hotspot in international tumor radiotherapy research in recent years. It uses ultra-high dose rates (usually greater than 100Gy / s) to inject the entire radiotherapy dose into the target area in a very short time (1 to 50ms). Studies have found that it causes less damage to normal tissues and can reduce the radiotherapy time by an order of magnitude.

[0004] At present, the radiation generated during radiotherapy is potentially harmful to human health; therefore, radiotherapy equipment needs to have good shielding performance to ensure the safety of medical staff, patients' families and the surrounding environment. The radiotherapy equipment currently on the market still has room for improvement in shielding performance and ease of use: at the same time, the existing radiotherapy equipment has poor sealing performance and poor protection effect on the health of medical staff.

[0005] In view of the above technical problems, improvements need to be made. Summary of the invention

[0006] The present invention is to overcome the defects in the prior art and provide a self-shielding device and a shielding method for radiotherapy equipment.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: a self-shielding device for radiotherapy equipment, including a shielding cabin, the shielding cabin has a accommodating cavity with an opening on one side, and the radiotherapy equipment is built into the accommodating cavity; a shielding door, which cooperates with the shielding cabin and is used to close or open the accommodating cavity with an opening on one side; a moving device, which is used to adjust the position of the shielding door so that the center point of the shielding door is aligned with the center point of the shielding cabin, so that the shielding door is sealed and connected to the shielding cabin.

[0008] As a preferred embodiment of the present invention, the shielding cabin and the shielding door form a shielding sphere.

[0009] As a preferred embodiment of the present invention, the shielding cabin comprises a main body and a support frame in an arc-shaped structure arranged on the main body, and transparent glass is arranged on both sides of the support frame.

[0010] As a preferred embodiment of the present invention, the main body and the transparent glass are in an arc-shaped structure.

[0011] As a preferred embodiment of the present invention, a sealing structure is formed at the connection between the shielding cabin and the shielding door.

[0012] As a preferred embodiment of the present invention, the sealing structure includes: a guide groove, which is a step-shaped structure and is circumferentially arranged outside the accommodating cavity with an opening on one side; a positioning protrusion, which is circumferentially arranged on the outside of the shielding door and is adapted to be snap-fitted with the guide groove.

[0013] As a preferred embodiment of the present invention, a positioning groove is formed on the positioning protrusion, and a sealing ring is installed in the positioning groove. When the shielding cabin and the shielding door are in a locked state, the positioning protrusion is embedded in the guide groove. At the same time, the sealing ring in the positioning groove is squeezed and fits with the guide groove.

[0014] As a preferred embodiment of the present invention, the body comprises a first shielding layer and a second shielding layer arranged sequentially from inside to outside; the transparent glass is located at the connection between the first shielding layer and the second shielding layer.

[0015] As a preferred embodiment of the present invention, the material of the first shielding layer includes one or more of the following: stainless steel, lead and aluminum; the material of the second shielding layer includes one or more of the following: polyethylene, polypropylene, polystyrene and boron.

[0016] As a preferred embodiment of the present invention, the transparent glass is organic glass, and an anti-radiation film is attached to the outer side of the organic glass, wherein the thickness of the transparent glass is 5 to 10 mm.

[0017] As a preferred embodiment of the present invention, the moving device includes: a moving guide rail, used to carry the shielding door and drive the shielding door to move along the length direction of the moving guide rail; a connecting part, fixed to the bottom of the shielding door; a driving module, assembled on the connecting part, for providing moving power for the shielding door; wherein one end of the moving guide rail abuts against the bottom of the main body, and the bottom of the moving guide rail and the bottom of the main body are on the same horizontal plane.

[0018] As a preferred embodiment of the present invention, the driving module includes a driving motor and a driving wheel; the driving wheel is assembled at the bottom of the connecting part and is adapted to be snap-fitted with the movable guide rail; the driving motor is built into the connecting part, connected to the driving wheel and drives the driving wheel to rotate; the moving device also includes a travel switch and a push button.

[0019] A shielding method for radiotherapy equipment, the method comprising:

[0020] Step 1, placing the target object on the radiotherapy device of the self-shielding device;

[0021] Step 2: using the mobile device to adjust the position of the shielding door.

[0022] Step three, move the shielding door so that the shielding door and the shielding cabin are locked with each other to complete the overall sealed shielding structure.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention has a simple structure and has good shielding performance by setting the mutual cooperation between the shielding cabin and the shielding door: the main body and the transparent glass structure design provide a strong radiation shielding ability, effectively protecting the safety of surrounding personnel and the environment.

[0025] 2. The present invention is cleverly designed, the shielding cabin and the shielding door form a shielding ball, and the appearance design is beautiful: the rounded appearance reduces the psychological pressure of patients and improves the acceptance of patients.

[0026] 3. The present invention provides a sealing structure to make the connection between the shielding door and the shielding cabin more airtight, thereby preventing radiation from leaking out of the gap, providing higher safety, ensuring the airtightness of the equipment in the closed state, and preventing radiation leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a side view of an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of an embodiment of the present invention;

[0029] Figure 3 is a usage state diagram of an embodiment of the present invention;

[0030] Figure 4 This is a diagram showing the radiotherapy device according to an embodiment of the present invention being in use in a shielded cabin;

[0031] Figure 5 is an exploded view of a self-shielding device according to an embodiment of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of a shielding cabin according to an embodiment of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of a shielding door according to an embodiment of the present invention;

[0034] The figure reference numerals are as follows: shielding cabin 1, shielding door 2, moving device 3, sealing structure 4, connecting part 5, accommodating chamber 10, main body 11, supporting frame 12, transparent glass 13, moving guide rail 30, driving motor 31, driving wheel 32, travel switch 33, pressing button 34, guide groove 40, positioning protrusion 41, positioning groove 42, sealing ring 43, radiotherapy equipment 100, first shielding layer 101, second shielding layer 102, shielding ball 200. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] Example:

[0037] like Figure 1-Figure 7 As shown, a self-shielding device for radiotherapy equipment includes a shielding cabin 1, the shielding cabin 1 has a receiving cavity 10 with an opening on one side, and the radiotherapy equipment 100 is built in the receiving cavity 10; a shielding door 2 cooperates with the shielding cabin 1 and is used to close or open the receiving cavity 10 with an opening on one side; a moving device 3 is used to adjust the position of the shielding door 2 so that the center point of the shielding door 2 is aligned with the center point of the shielding cabin 1, so that the shielding door 2 is sealed and connected to the shielding cabin 1;

[0038] The purpose of the present invention is to provide a self-shielding device for radiotherapy equipment. The shielding cabin 1 of the equipment has a steel structure as the main frame, has high strength and stability, and also includes a transparent glass 13, which can effectively block radiation; moreover, the shielding cabin 1 and the shielding door 2 form a shielding ball 200; the equipment has a rounded appearance, which reduces the psychological pressure on patients.

[0039] The beneficial effect of this technical solution is that traditionally, in order to meet the radiation shielding requirements, radiotherapy requires the construction of thick radiation shielding walls, resulting in high capital investment and increased floor space. The present application saves space and cost by providing a self-shielding device, eliminating the need to build overly thick fixed shielding walls.

[0040] Specifically, the shielding cabin 1 includes a main body 11 and a support frame 12 with an arc-shaped structure arranged on the main body 11, and transparent glass 13 is arranged on both sides of the support frame 12; the main body 11, the support frame 12 and the transparent glass 13 are an integrated structure, which improves the structural strength of the shielding cabin 1 and also increases the overall firmness of the self-shielding device, wherein the main body 11 and the transparent glass 13 are in an arc-shaped structure.

[0041] The present invention has a simple structure and has good shielding performance by arranging the mutual cooperation between the shielding cabin and the shielding door: the main body and the perspective glass structure design provide a strong radiation shielding ability, effectively protecting the safety of surrounding personnel and the environment.

[0042] A sealing structure 4 is formed at the connection between the shielding cabin 1 and the shielding door 2; specifically, the sealing structure 4 includes: a guide groove 40, which is a step-shaped structure and is circumferentially arranged outside the accommodating cavity 10 opened on one side; a positioning protrusion 41, which is circumferentially arranged on the outside of the shielding door 2 and is adapted to be snap-fitted with the guide groove 40.

[0043] When the shielding door 2 and the shielding cabin 1 are closed to each other, the positioning protrusion 41 is adapted and engaged with the guide groove 40, so as to avoid the shaking of the shielding door 2. The shielding door 2 and the shielding cabin 1 fit each other well, and the connection stability is better.

[0044] A positioning groove 42 is formed on the positioning protrusion 41, and a sealing ring 43 is installed in the positioning groove 42. When the shielding cabin 1 and the shielding door 2 are in a locked state, the positioning protrusion 41 is embedded in the guide groove 40. At the same time, the sealing ring 43 located in the positioning groove 42 is squeezed and fitted with the guide groove 40; the sealing ring 43 and the guide groove 40 are interference fit, which further makes the connection between the shielding door 2 and the shielding cabin 1 more sealed, can prevent radiation from leaking from the gap, has higher safety, ensures the sealing of the equipment in the closed state, and prevents radiation leakage.

[0045] The body 11 includes a first shielding layer 101 and a second shielding layer 102 which are arranged in sequence from inside to outside; the transparent glass 13 is located at the connection between the first shielding layer 101 and the second shielding layer 102 .

[0046] The body 11 includes a first shielding layer 101 and a second shielding layer 102, but is not limited to the above two shielding layers. It can be formed by stacking multiple shielding units. The number of shielding units can be increased without increasing the overall thickness of the body 11. Each layer of shielding units can effectively absorb and reduce the penetration of radiation, thereby further reducing the radiation level of the external environment. The number of shielding layers can be flexibly selected, increased or decreased according to specific circumstances to meet the radiation shielding requirements in different application scenarios, so that the self-shielding device can adapt to different treatment doses and radiation sources.

[0047] Specifically, the material of the first shielding layer 101 includes one or more of the following: stainless steel, lead and aluminum; the material of the second shielding layer 102 includes one or more of the following: polyethylene, polypropylene, polystyrene and boron.

[0048] The beneficial effect of adopting the above technical solution is that the above materials are low-cost and easy to obtain, and can reduce the manufacturing cost and maintenance cost of radiation protection shielding equipment while meeting the radiation shielding requirements.

[0049] In one embodiment, the first shielding layer 101 is formed by stacking multiple layers of stainless steel plates; the second shielding layer 102 is formed by stacking multiple layers of polyethylene plates (PE plates).

[0050] In the embodiment of the present application, the main body 11 is composed of a stainless steel plate and a PE plate. The stainless steel layer can shield the protons generated by the flash, and the PE can shield the neutrons generated by the flash.

[0051] The perspective glass 13 is organic glass, and an anti-radiation film is attached to the outer side of the organic glass. The thickness of the perspective glass 13 is 5-10 mm. In this embodiment, the thickness of the perspective glass 13 is 5 mm.

[0052] The moving device 3 includes: a moving guide rail 30, used to carry the shielding door 2 and drive the shielding door 2 to move along the length direction of the moving guide rail 30; a connecting part 5, fixed to the bottom of the shielding door 2; a driving module, assembled on the connecting part 5, used to provide moving power for the shielding door 2; wherein, one end of the moving guide rail 30 abuts against the bottom of the body 11, and the bottom of the moving guide rail 30 and the bottom of the body 11 are on the same horizontal plane.

[0053] Using the mobile device 3 to align the shielding door 2 with the shielding cabin 1 can ensure the sealing integrity of the entire self-shielding device and improve the accuracy of radiotherapy. After the radiotherapy is completed, the shielding door 2 can be separated from the shielding cabin 1 by the mobile device 3, which can save a huge amount of infrastructure economic costs and floor space costs for the enterprise under the premise of flexible operation. In summary, the present application can meet the radiation protection requirements of radiotherapy and reduce floor space and infrastructure costs.

[0054] The driving module includes a driving motor 31 and a driving wheel 32; the driving wheel 32 is assembled at the bottom of the connecting part 5 and is adapted to be snapped into the movable guide rail 30; the driving motor 31 is built into the connecting part 5, connected to the driving wheel 32 and drives the driving wheel 32 to rotate; the moving device 3 also includes a travel switch 33 and a press button 34.

[0055] By setting up the movable guide rail 30, the shielding door 2 can be moved forward and backward along the length direction of the movable guide rail 30. The cooperation between the driving wheel 32 and the movable guide rail 30 can provide precise linear motion, ensuring that the position adjustment of the shielding door 2 is more accurate; the driving motor 31 is mounted on the driving wheel 32, so that the driving wheel 32 can move along the length direction of the movable guide rail 30 and move with the shielding door 2; the design of the movable guide rail 30 and the driving wheel 32 makes the opening and closing of the equipment easier and more convenient, and it is convenient for patients to enter and exit.

[0056] At the same time, the operation of the driving motor 31 can also be controlled by the travel switch 33, providing an intuitive operation mode, and the operator can operate the travel switch 33 to control the movement of the shielding door 2, and the operation is simple and clear. Specifically, by controlling the driving motor 31 through the travel switch 33 and the push button 34, the front and rear movement distance of the shielding door 2 can be controlled according to the position between the shielding door 2 and the shielding cabin 1. This fine control method allows the operator to accurately adjust the position of the shielding door 2, and the control method of the travel switch 33 and the push button 34 allows the adjustment process to respond quickly to meet the immediate needs in treatment or experiments.

[0057] This embodiment also provides a shielding method for radiotherapy equipment, including:

[0058] Step 1: placing the target object on the radiotherapy device 100 of the self-shielding device;

[0059] Step 2: Use the moving device 3 to adjust the position of the shielding door 2.

[0060] Step three, move the shielding door 2 so that the shielding door 2 and the shielding cabin 1 are locked with each other to complete the overall sealed shielding structure.

[0061] Thus, the target object (for example, a patient) is placed on the radiotherapy device 100 of the self-shielding device, and the position of the shielding door 2 is adjusted using the moving device 3 so that the accommodating cavity 10 opened on one side of the self-shielding device corresponds to the position of the shielding door 2. The moving device 3 can ensure that the shielding door 2 is accurately moved to the shielding cabin 1, and is sealed by the sealing structure to ensure the safety of the treatment or test process.

[0062] 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.

[0063] Although this article makes use of the following figures more frequently: shielding cabin 1, shielding door 2, moving device 3, sealing structure 4, connecting part 5, accommodating chamber 10, main body 11, supporting frame 12, transparent glass 13, movable guide rail 30, driving motor 31, driving wheel 32, travel switch 33, pressing button 34, guide groove 40, positioning protrusion 41, positioning groove 42, sealing ring 43, radiotherapy equipment 100, first shielding layer 101, second shielding layer 102, shielding ball 200 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 equipment, characterized in that: include A shielding cabin (1), the shielding cabin (1) having a receiving chamber (10) with an opening on one side, wherein the radiotherapy device (100) is built into the receiving chamber (10); A shielding door (2) cooperates with the shielding cabin (1) and is used to close or open the accommodating cavity (10) with an opening on one side; A moving device (3) is used to adjust the position of the shielding door (2) so that the center point of the shielding door (2) is aligned with the center point of the shielding cabin (1), so that the shielding door (2) is sealed and connected to the shielding cabin (1); A sealing structure (4) is formed at the connection between the shielding cabin (1) and the shielding door (2); the sealing structure (4) comprises: a guide groove (40), the guide groove (40) being a step-shaped structure, the guide groove (40) being circumferentially arranged outside the accommodating cavity (10) with an opening on one side; a positioning protrusion (41), the positioning protrusion (41) being circumferentially arranged outside the shielding door (2) and being adapted to be snap-fitted with the guide groove (40); a positioning groove (42) being formed on the positioning protrusion (41), a sealing ring (43) being arranged in the positioning groove (42), and when the shielding cabin (1) and the shielding door (2) are in a locked state, the positioning protrusion (41) is embedded in the guide groove (40), and at the same time, the sealing ring (43) located in the positioning groove (42) is pressed and fitted with the guide groove (40).

2. A self-shielding device for radiotherapy equipment according to claim 1, characterized in that: The shielding cabin (1) and the shielding door (2) together form a shielding ball (200).

3. A self-shielding device for radiotherapy equipment according to claim 1 or 2, characterized in that: The shielding cabin (1) comprises a main body (11) and a support frame (12) arranged on the main body (11) and having an arc-shaped structure, and transparent glass (13) is arranged on both sides of the support frame (12).

4. A self-shielding device for radiotherapy equipment according to claim 3, characterized in that: The body (11) and the transparent glass (13) are in an arc-shaped structure.

5. A self-shielding device for radiotherapy equipment according to claim 3, characterized in that: The body (11) comprises a first shielding layer (101) and a second shielding layer (102) which are arranged in sequence from the inside out; the transparent glass (13) is located at the connection between the first shielding layer (101) and the second shielding layer (102).

6. A self-shielding device for radiotherapy equipment according to claim 5, characterized in that: The material of the first shielding layer (101) includes one or more of the following: stainless steel, lead and aluminum; the material of the second shielding layer (102) includes one or more of the following: polyethylene, polypropylene, polystyrene and boron.

7. A self-shielding device for radiotherapy equipment according to claim 3, characterized in that: The perspective glass (13) is organic glass, and an anti-radiation film is pasted on the outer side of the organic glass. The thickness of the perspective glass (13) is 5 to 10 mm.

8. A self-shielding device for radiotherapy equipment according to claim 1, characterized in that: The moving device (3) comprises: a moving guide rail (30) for carrying the shielding door (2) and driving the shielding door (2) to move along the length direction of the moving guide rail (30); A connecting portion (5) is fixedly arranged at the bottom of the shielding door (2); A driving module, mounted on the connecting portion (5), and used to provide moving power for the shielding door (2); One end of the movable guide rail (30) abuts against the bottom of the main body (11), and the bottom of the movable guide rail (30) and the bottom of the main body (11) are on the same horizontal plane.

9. A self-shielding device for radiotherapy equipment according to claim 8, characterized in that: The driving module comprises a driving motor (31) and a driving wheel (32); the driving wheel (32) is mounted on the bottom of the connecting portion (5) and is adapted to be snap-fitted with the moving guide rail (30); the driving motor (31) is built into the connecting portion (5), connected to the driving wheel (32) and drives the driving wheel (32) to rotate; the moving device (3) further comprises a travel switch (33) and a push button (34).

10. A shielding method for radiotherapy equipment, characterized in that: Using the self-shielding device for radiotherapy equipment according to any one of claims 1 to 9, the method comprises: Step (1), placing the target object on the radiotherapy device (100) of the self-shielding device; Step (ii), using the moving device (3) to adjust the position of the screen door (2), Step (three), moving the shielding door (2) so that the shielding door (2) and the shielding cabin (1) are locked with each other, thereby completing the overall sealed shielding structure.

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