Radiation positioning structure

Abstract

The utility model belongs to the technical field of oncology, particularly relates to a radiation positioning structure, and aims to solve the problems that a fixing belt is limited in fixing effect and cannot limit local movement of limbs of a patient, deviation is easy to occur in the radiation treatment process, the radiation treatment accuracy is not favorably improved, and the fixing belt blocks rays and affects the radiation treatment effect. Comprising a bed board, a positioning plate is fixedly arranged at the top of the bed board, a three-section type positioning mechanism attached to the outline of the positioning plate is arranged above the positioning plate, each section of the three-section type positioning mechanism is composed of a fixing frame and a grid thermoplastic film, and the grid thermoplastic film is fixedly arranged between the fixing frames. When the positioning device is used, the three-section type positioning mechanism is arranged, so that a limiting contour fitting the body of a patient can be customized according to the radiotherapy part of the patient, the positioning effect of the patient in the radiotherapy process is improved, the radiotherapy accuracy is improved, and the grid thermoplastic film does not affect the radiotherapy effect.

Description

Technical Field

[0001] The utility model relates to the technical field of oncology, in particular to a radiation positioning structure. Background Art

[0002] Radiotherapy is often used as a direct or auxiliary treatment for tumors. Radiotherapy is a treatment method that uses ionizing radiation. The principle is that the energy generated by a large amount of radiation damages the chromosomes of cells, stops the cells from growing, and thus eliminates cancer cells that can divide and grow rapidly. During radiotherapy, the part to be treated needs to be fixed before radiation is applied to the part to be treated. If the irradiation position is not accurate, it will cause damage to other parts of the patient's body and affect the effect of radiotherapy.

[0003] After searching, the patent with announcement number CN213527174U discloses a radiotherapy positioning device for oncology, including a base plate, a patient-end positioning device is provided on the upper surface of the base plate, a radiation-end positioning device is provided on the side of the base plate, the patient-end positioning device includes a head fixing device, a neck fixing device, a limb fixing device and a trunk fixing device, the radiation-end positioning device includes a support rod, a vertical telescopic device is provided on the support rod, one end of the support rod is connected to the side of the base plate through a sliding device, the other end of the support rod is connected to one end of a horizontal rod, the other end of the horizontal rod is provided with a clamping mechanism for fixing the radiation probe, the horizontal rod is vertically arranged with the support rod, and a horizontal telescopic device is provided on the horizontal rod.

[0004] Although the radiotherapy positioning device mentioned above fixes the patient's limbs through multiple fixing belts, the fixing effect of the fixing belts is limited and cannot limit the local movement of the patient's limbs, which makes deviations easy to occur during radiotherapy, which is not conducive to improving the accuracy of radiotherapy. In addition, the fixing belts block rays and affect the effect of radiotherapy.

[0005] In view of the above problems, the present utility model document proposes a radiation positioning structure. Utility Model Content

[0006] The utility model provides a radiation positioning structure, which solves the shortcomings of the prior art that the fixing belt has limited fixing effect and cannot restrict the local movement of the patient's limbs, which makes deviations easy to occur during radiotherapy and is not conducive to improving the accuracy of radiotherapy, and the fixing belt blocks rays and affects the effect of radiotherapy.

[0007] The utility model provides the following technical solutions:

[0008] A radiation positioning structure, comprising:

[0009] A bed board, a positioning plate is fixedly arranged on the top of the bed board;

[0010] A three-section positioning mechanism that fits the contour of the positioning plate is provided above the positioning plate, and each section of the three-section positioning mechanism is composed of a fixed frame and a mesh thermoplastic film, and the mesh thermoplastic film is fixedly arranged between the fixed frames, and a plurality of screw bolts are rotatably installed on the fixed frame, and the bottom of the screw bolts passes through the bottom of the fixed frame and is fixedly provided with a rectangular limit block, and a plug-in groove for clamping the rectangular limit block is provided at the edge of the top of the positioning plate, and a circular groove is provided at the bottom of the plug-in groove.

[0011] In a possible design, a mounting groove is provided at the top of the protruding end of the positioning plate, a headrest is fixedly installed in the mounting groove, and the headrest is made of high-density rubber material.

[0012] In a possible design, the mesh thermoplastic film is made of polyvinyl chloride.

[0013] In a possible design, the diameter of the circular groove is greater than the length of the rectangular limiting block.

[0014] In a possible design, support legs are fixedly provided at the four corners of the bottom of the bed board, and self-locking universal wheels are fixedly installed at the bottom of the support legs.

[0015] In a possible design, a handle is fixedly provided on one side of the bed board, and the handle is arranged away from the headrest.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0017] In the present application, when in use, the patient lies on the positioning board with his head resting on the headrest, and then one of the three-stage positioning mechanisms is selected according to the part of the patient that needs radiotherapy, and it is placed in hot water at about sixty degrees for a few minutes. After the grid thermoplastic film softens, it is taken out, and then it is covered on the part of the patient that needs radiotherapy and stretched downward to extend it to fit the contour of the patient's body, and then the screw bolt and the rectangular limit block are respectively inserted into the corresponding plug-in slots, and the screw bolt is screwed so that the rectangular limit block is against the top of the inner wall of the circular slot, thereby fixing the fixed frame on the positioning board, and then waiting for the grid thermoplastic film to cool and harden to form a limiting contour that fits the patient's body, and finally the bed board is pushed into the radiotherapy equipment for treatment.

[0018] The utility model has the following beneficial effects:

[0019] The utility model sets a mesh thermoplastic film made of polyvinyl chloride material. The polyvinyl chloride material provides appropriate transparency so that the rays can penetrate the mesh thermoplastic film and locate the target area. The polyvinyl chloride material has high plasticity and softens after heating, so it is easy to be made into various shapes to adapt to different body parts, thereby ensuring the accuracy of positioning during the patient's treatment.

[0020] The utility model provides a three-stage positioning mechanism, and can customize a limiting contour that fits the patient's body according to the patient's radiotherapy site, which helps to improve the positioning effect of the patient during radiotherapy, thereby improving the accuracy of radiotherapy, and the grid thermoplastic film will not affect the radiotherapy effect.

[0021] The utility model can realize quick installation, fixing and removal of the fixing frame by screwing the screw bolt, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a three-dimensional structure of a radiation positioning structure provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of a three-stage positioning mechanism structure of a radiation positioning structure provided by an embodiment of the utility model;

[0024] Figure 3 A partial cross-sectional structural schematic diagram of a radiation positioning structure provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the structure of a radial positioning structure after the bolt is rotated provided by an embodiment of the utility model.

[0026] Figure numerals: 1. bed board; 2. positioning plate; 3. mounting groove; 4. headrest; 5. three-stage positioning mechanism; 6. fixing frame; 7. grid thermoplastic film; 8. bolt; 9. rectangular limit block; 10. plug-in groove; 11. circular groove; 12. supporting leg; 13. self-locking universal wheel; 14. handle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0030] Embodiment 1

[0031] Please refer to Figure 1-4 , a radiation positioning structure, which is used in the field of oncology, including:

[0032] A bed board 1, a positioning plate 2 is fixedly arranged on the top of the bed board 1, a mounting groove 3 is arranged on the top of the protruding end of the positioning plate 2, a headrest 4 is fixedly arranged in the mounting groove 3, and the headrest 4 is preferably made of high-density rubber material, which improves the comfort of the patient lying flat and will not be deformed by the pressure molding of the mesh thermoplastic film 7;

[0033] A three-section positioning mechanism 5 is provided above the positioning plate 2 to fit the contour of the positioning plate 2. Each section of the three-section positioning mechanism 5 is composed of a fixed frame 6 and a mesh thermoplastic film 7. The mesh thermoplastic film 7 is fixedly arranged between the fixed frames 6. The mesh thermoplastic film 7 is preferably made of polyvinyl chloride. The polyvinyl chloride material provides appropriate transparency so that the radiation can penetrate the mesh thermoplastic film 7 and locate the target area. In addition, the polyvinyl chloride material has high plasticity and softens after heating. It is easy to be made into various shapes to adapt to different body parts, thereby ensuring the accuracy of positioning during patient treatment.

[0034] A plurality of screw bolts 8 are rotatably mounted on the fixed frame 6. The bottom of the screw bolts 8 penetrates the bottom of the fixed frame 6 and is fixedly provided with a rectangular stopper 9. A plug-in slot 10 for clamping the rectangular stopper 9 is provided at the edge of the top of the positioning plate 2. A circular slot 11 is provided at the bottom of the plug-in slot 10. The diameter of the circular slot 11 is greater than the length of the rectangular stopper 9, so that the rectangular stopper 9 can rotate in the circular slot 11, thereby causing the rectangular stopper 9 to be misaligned with the plug-in slot 10, thereby achieving fixation of the fixed frame 6.

[0035] More specifically, in this embodiment, when in use, the patient lies on the positioning plate 2 with his head resting on the headrest 4, and then one of the three-stage positioning mechanisms 5 is selected according to the part of the patient that needs radiotherapy, and it is placed in hot water at about 60 degrees for a few minutes. After the grid thermoplastic film 7 is softened, it is taken out, and then it is covered on the part of the patient that needs radiotherapy and stretched downward to extend it to fit the contour of the patient's body, and then the screw bolt 8 and the rectangular limit block 9 are respectively inserted into the corresponding plug-in slot 10, and the rectangular limit block 9 is pressed against the top of the inner wall of the circular slot 11 by screwing the screw bolt 8, so that the fixed frame 6 is fixed on the positioning plate 2, and then the grid thermoplastic film 7 is cooled and hardened to form a limiting contour that fits the patient's body, which helps to improve the positioning effect of the patient during radiotherapy, thereby improving the accuracy of radiotherapy, and the grid thermoplastic film 7 will not affect the radiotherapy effect.

[0036] Embodiment 2

[0037] Improvements based on Example 1:

[0038] Please refer to Figure 1 Support legs 12 are fixedly provided at the four corners of the bottom of the bed board 1, and self-locking universal wheels 13 are fixedly installed at the bottom of the support legs 12. A handle 14 is fixedly provided on one side of the bed board 1, and the handle 14 is arranged away from the headrest 4. By arranging the self-locking universal wheels 13 and the handle 14, it is convenient to push and pull the bed board 1 to move so as to enter and move out of the radiotherapy equipment.

[0039] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A radiation positioning structure, characterized in that: include: A bed board (1), a positioning plate (2) being fixedly arranged on the top of the bed board (1); A three-section positioning mechanism (5) is provided above the positioning plate (2) and fits the contour of the positioning plate (2). Each section of the three-section positioning mechanism (5) is composed of a fixed frame (6) and a mesh thermoplastic film (7). The mesh thermoplastic film (7) is fixedly arranged between the fixed frames (6). A plurality of screw bolts (8) are rotatably mounted on the fixed frame (6). The bottom of the screw bolts (8) passes through the bottom of the fixed frame (6) and is fixedly provided with a rectangular limit block (9). An insertion groove (10) for clamping the rectangular limit block (9) is provided at the edge of the top of the positioning plate (2). A circular groove (11) is provided at the bottom of the insertion groove (10).

2. A radiation positioning structure according to claim 1, characterized in that: A mounting groove (3) is provided at the top of the protruding end of the positioning plate (2), a headrest (4) is fixedly arranged in the mounting groove (3), and the headrest (4) is made of high-density rubber material.

3. A radiation positioning structure according to claim 1, characterized in that: The grid thermoplastic film (7) is made of polyvinyl chloride.

4. A radiation positioning structure according to claim 1, characterized in that: The diameter of the circular groove (11) is greater than the length of the rectangular limiting block (9).

5. A radiation positioning structure according to claim 1, characterized in that: Support legs (12) are fixedly arranged at the four corners of the bottom of the bed board (1), and self-locking universal wheels (13) are fixedly installed at the bottom of the support legs (12).

6. A radiation positioning structure according to claim 2, characterized in that: A handle (14) is fixedly provided on one side of the bed board (1), and the handle (14) is arranged away from the headrest (4).

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