Radiotherapy device for improving positioning accuracy

Abstract

The utility model relates to the field of radiotherapy treatment equipment, concretely relates to a radiotherapy device of improving positioning accuracy, including bearing platform, is provided with the bearing plate on the bearing platform, is connected with the sliding plate on the bearing plate sliding, the sliding plate surface is equipped with a plurality of positioning slot, is all provided with the positioning air bag in the positioning slot, the positioning air bag is connected with the gas supply pipeline, the gas supply pipeline one end is connected with the air pump, is connected with a plurality of solenoid valves on the gas supply pipeline, solenoid valve and positioning air bag one to one corresponding setting, positioning air bag is not in the inflation state completely located in the positioning slot, the positioning air bag surface is provided with the pressure strain gage for gathering pressure signal, still including the controller, the controller is connected with the air pump, solenoid valve and pressure strain gage signal, the utility model judges whether the human body positioning pad is the position deviation, and through the air pump to the positioning air bag inflation and timely adjust its position, so that radiotherapy treatment can maintain higher positioning accuracy, and then improve radiotherapy treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of radiotherapy equipment, specifically to a radiotherapy device that improves positioning accuracy. Background Technology

[0002] Radiation therapy is a treatment method that uses high-energy radiation to kill cancer cells or control their growth. Radiation therapy can be used alone or in combination with other treatments such as surgery or chemotherapy. A radiation therapy plan is usually specified before treatment, and the specific plan varies depending on the patient's cancer type, tumor location, and individual condition.

[0003] Human positioning pads are typically used during radiotherapy. These pads are usually customized to fit the individual patient's needs, as different patients may have different body shapes and lesion locations. Customized pads better adapt to the patient's individual characteristics, improving treatment accuracy and effectiveness. If a customized human positioning pad shifts during radiotherapy, it will reduce the positioning accuracy, leading to a decrease in radiotherapy precision. Conversely, non-customized human positioning pads may become inaccurate due to aging and deformation after prolonged use.

[0004] In summary, there is an urgent need for a radiotherapy device that can improve the accuracy of positioning in order to enhance the therapeutic effect of radiotherapy. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a radiotherapy device that improves positioning accuracy, thereby enhancing the positioning accuracy during radiotherapy and thus improving the therapeutic effect.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A radiotherapy device for improving positioning accuracy includes a support platform, a support plate is provided on the support platform, a sliding plate is slidably connected to the support plate, a plurality of positioning grooves are opened on the surface of the sliding plate, a positioning airbag is provided in each positioning groove, the positioning airbag is connected to an air supply pipe, one end of the air supply pipe is connected to an air pump, a plurality of solenoid valves are connected to the air supply pipe, the solenoid valves are arranged in a one-to-one correspondence with the positioning airbags, the positioning airbags are completely located in the positioning grooves when they are not inflated, and pressure strain gauges for collecting pressure signals are provided on the surface of the positioning airbags;

[0007] It also includes a controller for controlling the operation of the air pump and solenoid valve, which is connected to the air pump, solenoid valve and pressure strain gauge via signal connection.

[0008] The technical principles of the above solution are as follows:

[0009] When the human positioning pad is placed on the sliding plate surface, the controller activates the air pump to inflate each positioning airbag. Inflation stops when the pressure gauges detect pressure exceeding a threshold, and the controller closes the solenoid valve. The human body and the area covered by the positioning pad obstruct the positioning airbags, preventing them from extending beyond the positioning groove. However, the positioning airbags in the unobstructed areas extend beyond the positioning groove. The positioning airbags around the human positioning pad compress its sidewalls. When the human positioning pad shifts position, the pressure signal detected by the pressure gauges in contact with the sidewalls changes. At this point, the controller inflates the corresponding airbags via the air pump, restoring the pressure signals detected by the pressure gauges to normal values. This ensures the human positioning pad provides precise positioning support for the human body, thereby improving the positioning accuracy during radiotherapy.

[0010] The above approach has the following beneficial effects:

[0011] This solution monitors the pressure signals around the human positioning pad to determine if the pad has shifted position. When the pad shifts, an air pump inflates the positioning airbag to adjust its position in a timely manner, thus maintaining high positioning accuracy during radiotherapy and improving the treatment effect.

[0012] Furthermore, a sliding groove is provided in the bearing plate, a slide rail is installed in the sliding groove, a sliding strip is provided at the bottom of the sliding plate, the sliding strip is fixedly connected to the mounting base of the slide rail, a first limiting block is provided at one end of the sliding groove, and a second limiting block is provided at the end of the sliding strip away from the first limiting block.

[0013] Beneficial effects: The slide rail enables the sliding connection between the support plate and the sliding plate, and the first and second limiting blocks limit the maximum sliding stroke of the sliding plate, facilitating accurate positioning during radiotherapy preparation.

[0014] Furthermore, the positioning groove array is arranged on the surface of the sliding plate.

[0015] Beneficial effects: The positioning slots arranged in the array are equipped with positioning airbags, which can cover all positions on the surface of the sliding plate, adapt to different positions and postures of patients, and effectively promote the accurate positioning of the human positioning pad.

[0016] Furthermore, the positioning airbag has a semi-cylindrical structure, and a fixing plate is fixedly connected to the plane of the positioning airbag, with the fixing plate slidingly engaging with the positioning groove.

[0017] Beneficial effects: The semi-cylindrical positioning airbag extends into a positioning groove after inflation. As the positioning airbag expands, its surface extends to both sides, causing the pressure strain gauge to extend to both sides as well, so as to facilitate effective contact with different human positioning pads. The fixing plate can also improve the stability of the positioning airbag after inflation.

[0018] Furthermore, several springs are fixedly connected to the bottom of the sliding groove, and the ends of the springs away from the bottom of the sliding groove are fixedly connected to the fixed plate.

[0019] Beneficial effect: The positioning airbag is compressed by the spring, causing it to expand and make effective contact with the adjacent human positioning pad.

[0020] Furthermore, pressure strain gauges are symmetrically arranged on both sides of the surface of the positioning airbag.

[0021] Beneficial effects: Two sets of symmetrically arranged pressure strain gauges are used to adapt to different human body positioning pads.

[0022] Furthermore, each positioning airbag has at least four pressure strain gauges on its surface.

[0023] Beneficial effects: By setting multiple pressure strain gauges to increase the number of contacts with the human positioning pad, the more pressure strain gauges in contact with the human positioning pad, the more accurate the judgment of the displacement of the human positioning pad, thereby improving the positioning accuracy of radiotherapy.

[0024] Furthermore, a positioning reference plate is fixedly connected to one end surface of the sliding plate.

[0025] Beneficial effects: Determining the patient's basic position based on the positioning reference plate can improve the positioning accuracy during radiotherapy.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] Figure 1 This is an isometric view of an embodiment of the radiotherapy device for improving positioning accuracy according to the present invention;

[0028] Figure 2 This is a front view of an embodiment of the radiotherapy device for improving positioning accuracy according to the present invention;

[0029] Figure 3 A cross-sectional view of the support plate of an embodiment of the radiotherapy device for improving positioning accuracy according to this utility model;

[0030] Figure 4 A partially enlarged schematic diagram of an embodiment of the radiotherapy device for improving positioning accuracy according to this utility model;

[0031] Figure 5 This is a view of the inflated positioning airbag of an embodiment of the radiotherapy device for improving positioning accuracy according to this utility model.

[0032] Figure 6This is a schematic diagram of an embodiment of the radiotherapy device for improving positioning accuracy according to the present invention.

[0033] The reference numerals in the accompanying drawings of the instruction manual include: 1. support platform; 2. support plate; 3. sliding plate; 4. linear accelerator; 5. positioning reference plate; 6. sliding bar; 7. first limiting block; 8. second limiting block; 9. sliding groove; 10. air supply pipe; 11. solenoid valve; 12. pressure strain gauge; 13. positioning airbag; 14. fixing plate; 15. positioning groove; 16. spring. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following detailed description illustrates the specific implementation method:

[0038] Implementation, for example, attached Figure 1-6As shown: A radiotherapy device for improving positioning accuracy includes a support platform 1, which is mainly used to provide support for the patient to facilitate radiotherapy treatment. A support plate 2 is fixedly connected to the support platform 1, and a sliding plate 3 is slidably connected to the support plate 2. A positioning reference plate 5 is fixedly connected to one end surface of the sliding plate 3. The positioning reference plate 5 serves as a positioning reference for the patient lying on the platform, and the radiation position can be adjusted more accurately based on the positioning reference plate 5.

[0039] Specifically, a sliding groove 9 is formed inside the bearing plate 2, and a slide rail is installed inside the sliding groove 9. A sliding strip 6 is provided at the bottom of the sliding plate 3, and the sliding strip 6 is fixedly connected to the mounting base of the slide rail. A first limiting block 7 is provided at one end of the sliding groove 9, and a second limiting block 8 is provided at the end of the sliding strip 6 away from the first limiting block 7. By pushing the sliding plate 3, it can slide along the length of the bearing plate 2 along the slide rail, as shown in the attached figure. Figure 1 and attached Figure 2 As shown, the patient can be moved into the linear accelerator 4 for radiotherapy by pushing the sliding plate 3.

[0040] In this embodiment, to prevent the sliding plate 3 from sliding excessively, a first limiting block 7 and a second limiting block 8 are respectively provided on the sliding groove 9 and the sliding bar 6. By limiting each other with the first limiting block 7 and the second limiting block 8, the maximum sliding stroke of the sliding plate 3 is limited.

[0041] The sliding plate 3 has several positioning grooves 15 on its surface, each containing a positioning airbag 13. Each positioning airbag 13 is connected to 10 air supply pipes, one end of which is connected to an air pump. Several solenoid valves 11 are connected to each of the 10 air supply pipes, with each solenoid valve corresponding to one of the positioning airbags 13. The air pump inflates each positioning airbag 13, while the solenoid valves 11 control whether each positioning airbag 13 is inflated. After inflation, the positioning airbags 13 limit the movement of the human positioning pad, preventing it from shifting and thus maintaining positioning accuracy during radiotherapy.

[0042] To ensure the stability of the positioning airbag 13 after inflation and its stable positioning of the human positioning pad, in this embodiment, the positioning airbag 13 has a semi-cylindrical structure, and a fixing plate 14 is fixedly connected to the plane of the positioning airbag 13. The fixing plate 14 slides in conjunction with the positioning groove 15. This allows the fixing plate 14 on the plane side of the positioning airbag 13 to provide stable support after inflation, thereby stably positioning the human positioning pad. Simultaneously, since the shape of the human positioning pad varies depending on the patient's body size, to ensure effective contact between the positioning airbag 13 and the pad after inflation, several springs 16 are fixedly connected to the bottom of the sliding groove 9. The end of each spring 16 away from the bottom of the sliding groove 9 is fixedly connected to the fixing plate 14, and the elastic force applied by the springs 16 promotes effective contact.

[0043] When the positioning airbag 13 is not inflated, it is completely located within the positioning groove 15, facilitating the patient's lying on the surface of the movable board and the placement of the human positioning pad. The surface of the positioning airbag 13 is provided with pressure strain gauges 12 for collecting pressure signals. Preferably, the pressure strain gauges 12 are symmetrically arranged on both sides of the surface of the positioning airbag 13, and each positioning airbag 13 has at least four pressure strain gauges 12. In this embodiment, six pressure strain gauges 12 are directly provided to ensure that the pressure strain gauges 12 on the surface of the positioning airbag 13, which is close to the human positioning pad after inflation, can effectively collect pressure signals, serving as a basis for determining whether the position of the human positioning pad has shifted.

[0044] Furthermore, in this embodiment, the positioning grooves 15 are arranged in an array on the surface of the sliding plate 3, so that the entire surface of the sliding plate 3 is fully covered by the positioning airbags 13. During positioning, this ensures that the positioning airbags 13 can fully play their positioning role. Moreover, after a larger number of pressure strain gauges 12 come into contact with the human positioning pad, the accuracy of judging whether the human positioning pad has shifted can be improved.

[0045] It also includes a controller for controlling the operation of the air pump and solenoid valve 11, which is signal-connected to the air pump, solenoid valve 11 and pressure strain gauge 12.

[0046] The controller's control logic is as follows: Upon receiving a user command, the air pump is started, and pressure signals collected by each pressure strain gauge 12 are acquired. Based on whether the pressure strain gauge 12 has acquired pressure signals after the air pump has been inflated for a period of time, the area covered by the patient and the human positioning pad is determined. The positioning airbag 13 at the edge of the patient and the human positioning pad is continuously inflated until the pressure strain gauge 12 on its surface contacts the side of the patient and the human positioning pad, generating corresponding pressure signals. After the medical staff makes minor adjustments to the patient's position, the current pressure signal is determined as the reference pressure signal. If the pressure signals acquired by each pressure strain gauge 12 deviate from the reference pressure signal and exceed the threshold during radiotherapy, the air pump and solenoid valve 11 are controlled to adjust the corresponding point airbags to restore accurate support positioning and promote the repositioning of the human positioning pad, thereby maintaining the positioning accuracy of the entire radiotherapy.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A radiotherapy device for improving positioning accuracy, characterized in that, It includes a support platform, a support plate on the support platform, a sliding plate slidably connected to the support plate, several positioning grooves on the surface of the sliding plate, a positioning airbag in each positioning groove, an air supply pipe connected to the positioning airbag, an air pump connected to one end of the air supply pipe, several solenoid valves connected to the air supply pipe, and a solenoid valve corresponding to a positioning airbag. When the positioning airbag is not inflated, it is completely located in the positioning groove. A pressure strain gauge for collecting pressure signals is provided on the surface of the positioning airbag. It also includes a controller for controlling the operation of the air pump and solenoid valve, which is connected to the air pump, solenoid valve and pressure strain gauge via signal connection.

2. The radiotherapy device for improving positioning accuracy according to claim 1, characterized in that, The bearing plate has a sliding groove, a slide rail is installed in the sliding groove, a sliding strip is provided at the bottom of the sliding plate, the sliding strip is fixedly connected to the mounting base of the slide rail, a first limiting block is provided at one end of the sliding groove, and a second limiting block is provided at the end of the sliding strip away from the first limiting block.

3. The radiotherapy device for improving positioning accuracy according to claim 1, characterized in that, The positioning groove array is arranged on the surface of the sliding plate.

4. The radiotherapy device for improving positioning accuracy according to claim 1, characterized in that, The positioning airbag has a semi-cylindrical structure, and a fixing plate is fixedly connected to the plane of the positioning airbag. The fixing plate slides in conjunction with the positioning groove.

5. The radiotherapy device for improving positioning accuracy according to claim 4, characterized in that, Several springs are fixedly connected to the bottom of the sliding groove, and the ends of the springs away from the bottom of the sliding groove are fixedly connected to the fixed plate.

6. The radiotherapy device for improving positioning accuracy according to claim 5, characterized in that, Pressure strain gauges are symmetrically arranged on both sides of the surface of the positioning airbag.

7. The radiotherapy device for improving positioning accuracy according to claim 6, characterized in that, Each positioning airbag has at least four pressure strain gauges on its surface.

8. The radiotherapy device for improving positioning accuracy according to claim 1, characterized in that, A positioning reference plate is fixedly connected to one end of the sliding plate.

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