Radiotherapy equipment isocenter detector

Abstract

The utility model provides an isocenter detector for radiotherapy equipment, which belongs to the technical field of medical equipment and comprises a base, a film box body and a film box cover, a locking hole is formed in the middle area of the base in a penetrating manner, a locking screw is slidably connected to the inner wall of the locking hole, supports are fixedly connected to two ends of the upper surface of the base, and the film box cover is fixedly connected to the supports. A mounting groove is formed in the top of the support, a pin hole is formed in one side of the inner wall of the mounting groove in a penetrating mode, and a plug pin is slidably connected to the inner wall of the pin hole. The film box cover is opened and closed by connecting the film box body and the film box cover through the rotating shaft, and the film box cover is tightly attached to and fixed to the film box body after being closed by fixedly arranging the positioning assembly capable of automatically resetting between the film box body and the film box cover. Therefore, the installation process between the film box body and the film box cover becomes simple, positioning parts do not need to be stored additionally when the film box is not installed, and the management difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to an isocenter detector for radiotherapy equipment. Background Technique

[0002] The isocenter detector in radiotherapy is a very important device in radiotherapy, which ensures the precise coincidence of the rotation center of the radiotherapy equipment and the tumor center. This technology is crucial for the accuracy and safety of radiotherapy.

[0003] The patent of "an isocenter detector for radiotherapy equipment" with the publication number of "CN215608861U": includes a film cassette body, the two sides of the film cassette body are connected with a base bracket, a film cassette cover is arranged at the rear side of the film cassette body, a pressing block is connected to the rear side edge of the film cassette body by screws, the pressing block presses the film cassette cover, a through hole is arranged in the middle of the film cassette cover, a perforating needle can be inserted into the through hole, and the film cassette body, the film cassette cover and the base bracket are all of transparent structures. The device has a simple structure and simple operation, and can accurately calibrate the center position.

[0004] However, the above isocenter detector still has deficiencies in the actual use process: the installation between the film cassette body and the film cassette cover of the device is relatively cumbersome, the installation efficiency is not high, and in addition, the positioning components used during installation need to be stored separately when not installed, which increases the management difficulty. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem that the installation between the film cassette body and the film cassette cover in the prior art is relatively cumbersome, and to propose an isocenter detector for radiotherapy equipment with simplified installation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An isocenter detector for radiotherapy equipment, including a base, a film cassette body and a film cassette cover, a locking hole is penetrated through the middle area of the base, a locking screw is slidably connected to the inner wall of the locking hole, both ends of the upper surface of the base are fixedly connected with brackets, an installation groove is opened at the top of the brackets, a pin hole is penetrated through one side of the inner wall of the installation groove, and a plug pin is slidably connected to the inner wall of the pin hole;

[0008] Both ends of the film cassette body are fixedly connected with fixing blocks, the fixing blocks correspond to the installation grooves and are movably connected with the installation grooves. On both sides of the bottom of the inner wall of the film cassette body, shaft holes are opened. A through hole is opened in the center of the film cassette cover. A perforating needle is slidably connected to the inner wall of the through hole. One end of the film cassette cover is fixedly connected through a rotating shaft, and both ends of the rotating shaft are rotatably connected to the inner walls of the shaft holes. On the upper part of one side where the film cassette body and the film cassette cover are coplanar, a baffle is fixedly connected. On the side of the film cassette body, a limiting plate is fixedly connected on one side of the baffle close to the film cassette cover. An L-shaped plate is slidably connected between the limiting plate and the surface of the film cassette body. A spring is fixedly connected between the L-shaped plate and the baffle.

[0009] Preferably, there are two positioning components composed of the baffle, the limiting plate, the L-shaped plate and the spring, and the two positioning components are symmetrically distributed on both sides of the film cassette cover.

[0010] Preferably, perpendicular insertion holes are opened on two adjacent surfaces of the fixing block, the insertion holes correspond to the pin holes, and the fixing block can be fixed in the installation groove by inserting a pin through the pin hole and into the insertion hole.

[0011] Preferably, the end of the film cassette cover fixedly connected with the rotating shaft is an arc surface.

[0012] Preferably, the film cassette body, the film cassette cover, the base and the bracket are all of transparent structures.

[0013] Preferably, the locking screw, the pin, the rotating shaft, the baffle, the limiting plate and the L-shaped plate are all made of POM plastic material.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] In the present utility model, the film cassette body and the film cassette cover are connected by a rotating shaft to realize the opening and closing of the film cassette cover. By fixedly arranging a positioning component that can automatically reset between the film cassette body and the film cassette cover, the film cassette cover is closely attached to and fixed with the film cassette body after being closed, so that the installation process between the film cassette body and the film cassette cover becomes simple, and there is no need to store the positioning parts separately during non-installation, reducing the management difficulty. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an isocenter detector of a radiotherapy device proposed by the present utility model;

[0017] Figure 2 is a schematic structural diagram of a film cassette body and a film cassette cover of an isocenter detector of a radiotherapy device proposed by the present utility model;

[0018] Figure 3 is Figure 1 an enlarged schematic diagram of the structure at A in

[0019] In the figure: 1 base, 2 locking hole, 3 locking screw, 4 bracket, 5 mounting groove, 6 plug pin, 7 film cassette body, 8 fixing block, 9 shaft hole, 10 film cassette cover, 11 through hole, 12 perforating needle, 13 rotating shaft, 14 baffle, 15 limiting plate, 16 L-shaped plate, 17 spring. Specific embodiments

[0020] The technical solutions in the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] Refer to Figures 1-3 , An isocenter detector for a radiotherapy device, comprising a base 1, a film cassette body 7 and a film cassette cover 10. A locking hole 2 runs through the middle area of the base 1. A locking screw 3 is slidably connected to the inner wall of the locking hole 2. Both ends of the upper surface of the base 1 are fixedly connected with brackets 4. An installation groove 5 is opened at the top of the bracket 4. A pin hole runs through one side of the inner wall of the installation groove 5. A plug pin 6 is slidably connected to the inner wall of the pin hole. The film cassette body 7, the film cassette cover 10, the base 1 and the bracket 4 are all of transparent structures;

[0022] Fixing blocks 8 are fixedly connected to both ends of the film cassette body 7. The fixing blocks 8 correspond to the installation grooves 5 and are movably connected to the installation grooves 5. Perpendicular jacks are opened on two adjacent surfaces of the fixing blocks 8. The jacks correspond to the pin holes. The fixing blocks 8 can be fixed in the installation grooves 5 by inserting the plug pins 6 through the pin holes and into the jacks. Shaft holes 9 are opened at the bottoms of both side surfaces of the inner wall of the film cassette body 7. A through hole 11 is opened at the center of the film cassette cover 10. A perforating needle 12 is slidably connected to the inner wall of the through hole 11. One end of the film cassette cover 10 is fixedly connected with a rotating shaft 13 running through it. Both ends of the rotating shaft 13 are rotatably connected to the inner walls of the shaft holes 9. The end of the film cassette cover 10 fixedly connected with the rotating shaft 13 is an arc surface, so that the film cassette cover 10 can smoothly rotate 180° around the rotating shaft 13 to open and close. A baffle 14 is fixedly connected to the upper part of the side where the film cassette body 7 and the film cassette cover 10 are coplanar. A limiting plate 15 is fixedly connected to the side of the film cassette body 7 near the film cassette cover 10 on the side of the baffle 14. An L-shaped plate 16 is slidably connected between the limiting plate 15 and the surface of the film cassette body 7. A spring 17 is fixedly connected between the L-shaped plate 16 and the baffle 14. There are two positioning components composed of the baffle 14, the limiting plate 15, the L-shaped plate 16 and the spring 17. The two positioning components are symmetrically distributed on both sides of the film cassette cover 10. The locking screw 3, the plug pin 6, the rotating shaft 13, the baffle 14, the limiting plate 15 and the L-shaped plate 16 are all made of POM plastic;

[0023] The film box body 7 and the film box cover 10 are connected by the rotating shaft 13 to realize the opening and closing of the film box cover 10. By fixing a positioning component that can automatically reset between the film box body 7 and the film box cover 10, the film box cover 10 is tightly attached to and fixed to the film box body 7 after closing. This can simplify the installation process between the film box body 7 and the film box cover 10, and there is no need to store the positioning component separately when not in installation, thereby reducing the management difficulty.

[0024] The functional principle of the utility model can be explained through the following operation modes:

[0025] When in use, first fix the base 1 on the treatment bed with the locking screw 3, then open the film box cover 10, put the film into the film box body 7, and close the film box cover 10. When closing, the film box cover 10 rotates around the rotating shaft 13 toward the film box body 7, and the L-shaped plate 16 is moved by hand to make the film box cover 10 fit the film box body 7 without hindrance. Release your hand, and the L-shaped plate 16 automatically resets under the action of the spring 17, blocking the rotation of the film box cover 10, so that the film box cover 10 is fixed on the film box body 7. Choose whether to install the film box body 7 horizontally or vertically on the bracket 4. After determining, install the fixing blocks 8 at both ends of the film box body 7 in the installation groove 5, and insert the plug 6 into the plug hole through the pin hole to fix the film box body 7;

[0026] The film box body 7 and the film box cover 10 are connected by the rotating shaft 13 to realize the opening and closing of the film box cover 10. By fixing a positioning component that can automatically reset between the film box body 7 and the film box cover 10, the film box cover 10 is tightly attached to and fixed to the film box body 7 after closing, so that the installation process between the film box body 7 and the film box cover 10 becomes simple, and there is no need to store the positioning component separately when not in installation, which reduces the management difficulty;

[0027] Run the equipment to take an X-ray. After taking the X-ray, use a perforating needle 12 to pierce the film through the through hole 11 on the film box cover 10. Check whether the center of the focal spot after taking the X-ray is concentric with the hole on the film pierced by the perforating needle 12. If they are concentric, it means that the isocenter position is accurate. If not, adjust the position of the treatment bed and repeat the above test until they are concentric.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An isocenter detector for a radiotherapy device, comprising a base (1), a film cassette body (7) and a film cassette cover (10), characterized in that, A locking hole (2) runs through the middle area of the base (1). A locking screw (3) is slidably connected to the inner wall of the locking hole (2). Both ends of the upper surface of the base (1) are fixedly connected with brackets (4). An installation groove (5) is formed at the top of the bracket (4). A pin hole runs through one side of the inner wall of the installation groove (5). A plug pin (6) is slidably connected to the inner wall of the pin hole; Both ends of the film cartridge body (7) are fixedly connected with fixing blocks (8). The fixing blocks (8) correspond to the installation grooves (5) and are movably connected to the installation grooves (5). Axial holes (9) are formed at the bottoms of both side surfaces of the inner wall of the film cartridge body (7). A through hole (11) is formed in the center of the film cartridge cover (10). A perforating needle (12) is slidably connected to the inner wall of the through hole (11). One end of the film cartridge cover (10) is fixedly connected with a rotating shaft (13) passing through. Both ends of the rotating shaft (13) are rotatably connected to the inner walls of the axial holes (9). A baffle (14) is fixedly connected to the upper part of the side of the film cartridge body (7) and the film cartridge cover (10) on the same plane. A limiting plate (15) is fixedly connected to the side surface of the film cartridge body (7) on the side where the baffle (14) is close to the film cartridge cover (10). An L-shaped plate (16) is slidably connected between the limiting plate (15) and the surface of the film cartridge body (7). A spring (17) is fixedly connected between the L-shaped plate (16) and the baffle (14).

2. The isocenter detector of a radiotherapy device according to claim 1, characterized in that, There are two positioning components composed of the baffle (14), the limiting plate (15), the L-shaped plate (16) and the spring (17). The two positioning components are symmetrically distributed on both sides of the film cartridge cover (10).

3. The isocenter detector of a radiotherapy device according to claim 1, characterized in that, Perpendicular jacks are formed on two adjacent surfaces of the fixing block (8). The jacks correspond to the pin holes. The fixing block (8) can be fixed in the installation groove (5) by inserting the plug pin (6) through the pin hole and into the jacks.

4. The isocenter detector of a radiotherapy device according to claim 1, characterized in that, One end of the film cartridge cover (10) fixedly connected with the rotating shaft (13) is an arc surface.

5. A central axis detector for a radiotherapy device according to claim 1, characterized in that, The film cartridge body (7), the film cartridge cover (10), the base (1) and the bracket (4) are all of transparent structures.

6. The isocenter detector of a radiotherapy device according to claim 1, characterized in that, The locking screw (3), the plug pin (6), the rotating shaft (13), the baffle (14), the limiting plate (15) and the L-shaped plate (16) are all made of POM plastic material.

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