A radiotherapy couch structure

Abstract

The utility model discloses a treatment bed structure for radiotherapy, including base plate, be provided with a plurality of installation sites on the base plate, and each installation site is arrayed, every installation site is detachably connected with the one end of support column subassembly, every support column subassembly is provided with temperature -sensitive plastic column body, and every temperature -sensitive plastic column body is detachably connected with corresponding installation site, still including thermostatic heating device, thermostatic heating device with base plate is detachably connected, the utility model solves the technical problem of the treatment bed in the prior art difficult to realize local deformation, uneven support force distribution, leading to difficult to adapt to complex human structure, leading to the fixed effect of patient is poor, and the probability of body position deviation of patient in the treatment process is higher, the utility model can make the form of treatment bed and the human structure of patient adapt to each other, improve the fixed effect of patient, reduce the probability of body position deviation of patient in the treatment process.

Description

Technical Field

[0001] This utility model relates to the field of radiotherapy treatment bed technology, and specifically to a radiotherapy treatment bed structure. Background Technology

[0002] During radiotherapy, linear accelerators are often used to treat cancer or provide localized radiation therapy. During treatment, patients need to lie on a treatment bed. However, most treatment beds adapted to linear accelerators currently use a fixed design or a limited degree of freedom adjustment design, relying on manual or preset program positioning. For example, patent CN213432639U discloses a treatment bed structure, including a bed base, a connecting frame, and a bed board, which uses motor transmission to adjust the overall posture of the treatment bed, solving the problem of difficulty for patients to get up and making it easier for them to get up.

[0003] However, existing treatment beds require passive support devices such as vacuum mats and foam mats when patients lie on them. This is cumbersome and lacks repeatability. The uneven distribution of support force, muscle peristalsis, or slight displacement can easily cause positional deviation and lead to errors in target area positioning. Furthermore, they lack the ability to adapt to local deformation, making it difficult to conform to complex human structures, the micro-curvature of the patient's body surface (such as scoliosis or chest deformities), or to accommodate special positional needs (such as lateral or prone positions). Patient posture adjustment depends on the operator's experience, increasing the risk of human error. In addition, for obese or weak patients, large-area compressive support can easily cause discomfort.

[0004] Therefore, it is necessary to improve the treatment bed structure used in linear accelerators to address the above-mentioned defects, so as to enable local deformation, improve the distribution of support force, adapt to complex human body structures, improve the fixation effect on patients, and reduce the probability of patients shifting their position during treatment. Utility Model Content

[0005] The purpose of this utility model is to provide a radiotherapy treatment bed structure to solve the technical problems in the prior art where treatment beds used for linear accelerators are difficult to deform locally, have uneven distribution of support force, are difficult to adapt to complex human body structures, resulting in poor patient fixation and a high probability of patient positional displacement during treatment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A radiotherapy treatment bed structure includes a base plate with multiple mounting positions arranged in an array. Each mounting position has one end of a support column assembly detachably connected to it, and the top of each support column assembly supports the patient's body. Each support column assembly has a temperature-sensitive plastic column, one end of which is detachably connected to the corresponding mounting position. Each temperature-sensitive plastic column enters a deformable state at a temperature greater than or equal to a critical temperature, and in this deformable state, it can deform under external force. The structure also includes a constant-temperature heating device detachably connected to the base plate. When the constant-temperature heating device is in operation, it continuously supplies heat to the temperature-sensitive plastic column, raising its temperature to a temperature greater than or equal to the critical temperature.

[0008] In this way, when the patient lies down on the treatment bed, the constant temperature heating device is first turned on to heat the temperature-sensitive plastic columns in each support column assembly until they reach the critical temperature, causing each temperature-sensitive plastic column to deform. Then, the patient lies down on the treatment bed, and once the height of each support column no longer changes, the constant temperature heating device is turned off, allowing each temperature-sensitive plastic column to return to its non-deformed state. This allows the shape of the treatment bed to adapt to the patient's human body structure, thus adapting to complex human structures, improving the patient's fixation effect, and reducing the probability of the patient's position shifting during treatment.

[0009] Preferably, the substrate is composed of multiple splicing plates, and a fitting is provided at the joint of any two adjacent splicing plates. The fitting includes a fitting block and a fitting groove. The fitting block can be inserted into or removed from the fitting groove in a first direction, and the fitting groove can restrict the displacement of the fitting block in a second direction. After a patient lies on the treatment bed, each splicing plate can correspond to the patient's human body structure. Multiple support column assemblies are installed on each splicing plate, and each splicing plate is detachably connected to a constant temperature heating device. Each constant temperature heating device can independently deliver heat to the temperature-sensitive plastic column corresponding to the splicing plate.

[0010] Preferably, the constant temperature heating device is a constant temperature heating plate, which is detachably connected to the upper surface of the substrate in the vertical direction, and each of the mounting positions is disposed on the upper surface of the constant temperature heating plate; the constant temperature heating plate includes heating wires that are fixedly connected to the constant temperature heating plate and are evenly distributed, the heating wires are used to be electrically connected to an external DC power supply, and when energized, the heating wires can be heated to a preset temperature and maintained at a constant temperature.

[0011] Preferably, the radiotherapy treatment bed structure further includes a silicone pad covering the end of each of the support column assemblies away from the substrate. The silicone pad prevents slippage and distributes pressure, reducing the pressure of the support column assemblies on the patient's body and improving patient comfort.

[0012] Preferably, the silicone pad has uniformly distributed heating wires fixed in it. The heating wires are used to connect to an external DC power supply. When energized, the heating wires can heat to a preset temperature and maintain a constant temperature, thereby keeping the silicone pad at a constant temperature and improving the patient's comfort. Each of the support column assemblies has a heat-conducting part on its top. The heat-conducting part contacts the temperature-sensitive plastic column and is used to conduct the temperature of the silicone pad to the temperature-sensitive plastic column to assist the deformation of each support column assembly and increase the heating rate of each temperature-sensitive plastic column.

[0013] Preferably, the support column assembly further includes a housing, which is slidably connected to the substrate. The temperature-sensitive plastic column is located inside the housing, and the central axis of the temperature-sensitive plastic column coincides with the central axis of the housing. The other end of the temperature-sensitive plastic column is fixedly connected to the housing. A spring is also sleeved on the outer periphery of the temperature-sensitive plastic column, and the two ends of the spring are fixedly connected to the top of the housing and the corresponding mounting position, respectively, for limiting the position of the temperature-sensitive plastic column and assisting the temperature-sensitive plastic column in resetting.

[0014] Preferably, the temperature-sensitive plastic column is a nickel-titanium shape memory alloy column, and the critical temperature range is 30-50℃, preferably 40℃.

[0015] Preferably, both the outer shape of the shell and the outer shape of the temperature-sensitive plastic column are regular polygonal columns.

[0016] Preferably, the substrate is a magnesium alloy frame structure and has a honeycomb structure.

[0017] Preferably, a lead plate is fixed to the lower surface of the substrate along the vertical direction, and the size of the lead plate is adapted to the size of the substrate to shield radiation from penetrating the bed board to other areas.

[0018] The technical solution of this utility model has the following beneficial effects: This utility model improves the structure of the treatment bed, changing the original flat plate structure into a structure that can be locally deformed. Specifically, it is achieved through a temperature-sensitive plastic column array structure. Combined with a constant temperature heating device, it can achieve local deformation, improve the distribution of support force, and thus adapt to complex human body structures, improve the fixation effect on patients, and reduce the probability of patients shifting their position during treatment. Attached Figure Description

[0019] To make the purpose, technical solution, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the radiotherapy treatment bed of this utility model.

[0021] Figure 2 This is a schematic diagram of a preferred substrate structure of the present invention.

[0022] Figure 3 This is a partial exploded view of the radiotherapy treatment bed of this utility model.

[0023] Figure 4 This is a cross-sectional structural diagram of the support column assembly of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 100, substrate; 101, mounting position; 102, splicing plate; 104, fitting; 105, silicone pad; 200, support column assembly; 201, housing; 202, temperature-sensitive plastic column; 203, spring; 204, temperature-conducting part; 300, constant temperature heating device; 301, heating wire; 400, lifting platform; 500, base. Detailed Implementation

[0025] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of the structure of a radiotherapy treatment bed according to this utility model.

[0026] This invention can be applied to a treatment bed structure for fixing patients during radiotherapy using a linear accelerator. This invention solves the technical problems of existing treatment beds used with linear accelerators, such as difficulty in achieving localized deformation, uneven distribution of support force, difficulty adapting to complex human structures, poor patient fixation, and a high probability of patient positional displacement during treatment.

[0027] The radiotherapy treatment bed structure disclosed in this utility model has the following technical effects:

[0028] 1. This utility model improves the structure of the treatment bed by changing the original flat plate structure into a structure that can be locally deformed. Specifically, it is achieved through a temperature-sensitive plastic column array structure. Combined with a constant temperature heating device, it can achieve local deformation, improve the distribution of support force, and thus adapt to complex human body structures, improve the fixation effect on patients, and reduce the probability of patients shifting their position during treatment.

[0029] 2. It allows for flexible pressure adjustment on the patient's body, combined with a flexible contact surface, reducing large-area pressure, lowering the risk of pressure ulcers, prolonging the patient's tolerance time, and improving the patient's comfort.

[0030] 3. It supports full coverage from children to obese patients, requires no replacement of parts, reduces reliance on assistive devices, shortens treatment preparation time, and improves treatment efficiency;

[0031] 4. In addition, it can greatly reduce costs, replace consumables such as vacuum bags, foam pads, and thermoplastic films, thereby reducing the cost per treatment. It also has good compatibility and can be quickly adapted to existing radiotherapy equipment.

[0032] To further illustrate the structure of this utility model, the following embodiments are disclosed.

[0033] Example 1, please refer to Figure 1 A radiotherapy treatment bed structure is provided, including a base plate 100, on which a plurality of mounting positions 101 are provided, and the mounting positions 101 are arranged in an array. Each mounting position 101 is detachably connected to one end of a support column assembly 200, and the top of each support column assembly 200 is used to support the patient's body. Each support column assembly 200 is provided with a temperature-sensitive plastic column 202, and one end of each temperature-sensitive plastic column 202 is detachably connected to the corresponding mounting position 101. Each temperature-sensitive plastic column 202 enters a deformable state under conditions greater than or equal to a critical temperature, and can deform under the action of external force in the deformable state. The radiotherapy treatment bed structure also includes a constant temperature heating device 300, which is detachably connected to the base plate 100. When the constant temperature heating device 300 is working, it can continuously deliver heat to the temperature-sensitive plastic column 202, so that the temperature-sensitive plastic column 202 is heated to greater than or equal to the critical temperature.

[0034] In this way, when the patient lies down on the treatment bed, the constant temperature heating device 300 is turned on to heat the temperature-sensitive plastic columns 202 in each support column assembly 200 until they reach the critical temperature, causing each temperature-sensitive plastic column 202 to deform. Then, the patient lies down on the treatment bed. After the height of each support column no longer changes, the constant temperature heating device 300 is turned off, allowing each temperature-sensitive plastic column 202 to return to a non-deformed state. This allows the shape of the treatment bed to adapt to the patient's human body structure, thus adapting to complex human structures, improving the patient's fixation effect, and reducing the probability of the patient's body position shift during treatment.

[0035] Specifically, the base of the device is also equipped with a lifting platform 400, which can be raised and lowered by an external power source, thereby allowing for vertical adjustment of the treatment bed. The bottom of the lifting platform 400 is also equipped with a base 500, which is fixed to the floor of the radiotherapy room to stabilize the entire treatment bed.

[0036] Example 2, based on Example 1, please refer to... Figure 2 The substrate 100 is assembled from multiple splicing plates 102. A fitting 104 is provided at the joint of any two adjacent splicing plates 102. The fitting 104 includes a fitting block and a fitting groove. The fitting block can be inserted into or removed from the fitting groove from a first direction, and the fitting groove can restrict the displacement of the fitting block in a second direction. Multiple support column assemblies 200 are respectively installed on each splicing plate 102. Each splicing plate 102 is detachably connected to a constant temperature heating device 300. Each constant temperature heating device 300 can independently deliver heat to the temperature-sensitive plastic column 202 of the corresponding splicing plate 102.

[0037] Specifically, after a patient lies on the treatment bed, each of the splicing panels 102 can correspond to the patient's human body structure; please refer to Figure 2 The substrate 100 includes six splicing plates 102, which correspond to the patient's head, chest, waist, left upper limb, right upper limb and lower limb respectively. Some or all of the constant temperature heating devices 300 can be flexibly selected to work, so that the temperature-sensitive plastic column 202 on the corresponding splicing plate 102 enters the deformation state, so as to flexibly adjust whether the local area is deformed or the degree of deformation.

[0038] Example 3, based on Example 1 or 2, please refer to... Figure 3 The constant temperature heating device 300 is a constant temperature heating plate. The constant temperature heating plate is detachably connected to the upper surface of the substrate 100 in the vertical direction. Each of the mounting positions 101 is disposed on the upper surface of the constant temperature heating plate. The constant temperature heating plate includes heating wires 301 that are fixedly connected to the constant temperature heating plate and evenly distributed. The heating wires 301 are used to be electrically connected to an external DC power supply. When energized, the heating wires 301 can be heated to a preset temperature and maintained at a constant temperature.

[0039] Example 4, based on any one of Examples 1 to 3, please refer to... Figure 1 The radiotherapy treatment bed structure also includes a silicone pad 105, which covers the end of each support column assembly 200 away from the substrate 100. The silicone pad 105 prevents slippage and distributes pressure, thereby reducing the pressure of each support column assembly 200 on the patient's body and improving patient comfort.

[0040] Example 5, based on Example 4, please refer to... Figure 3The silicone pad 105 has uniformly distributed heating wires 301 fixed in it. The heating wires 301 are used to connect to an external DC power supply. When energized, the heating wires 301 can heat to a preset temperature and maintain a constant temperature, thereby keeping the silicone pad 105 at a constant temperature and improving the patient's comfort. Each of the support column assemblies 200 has a heat-conducting part 204 on its top. The heat-conducting part 204 contacts the temperature-sensitive plastic column 202 and is used to conduct the temperature of the silicone pad 105 to the temperature-sensitive plastic column 202 to assist the deformation of each support column assembly 200 and improve the heating rate of each temperature-sensitive plastic column.

[0041] Example 6: Based on any of the above examples, please refer to... Figure 4 The support column assembly 200 further includes a housing 201, which is slidably connected to the base plate 100. The temperature-sensitive plastic column 202 is located inside the housing 201, and the central axis of the temperature-sensitive plastic column 202 coincides with the central axis of the housing 201. The other end of the temperature-sensitive plastic column 202 is fixedly connected to the housing 201. A spring 203 is also sleeved on the outer periphery of the temperature-sensitive plastic column 202. The two ends of the spring 203 are fixedly connected to the top of the housing 201 and the corresponding mounting position 101, respectively, for limiting the position of the temperature-sensitive plastic column 202 and assisting the temperature-sensitive plastic column 202 in resetting.

[0042] Specifically, the substrate 100 has a sliding hole, and the bottom of the corresponding housing 201 is fixed with a sliding rod. The sliding rod is positioned corresponding to the sliding hole and can extend into the sliding hole to achieve a sliding connection between the housing 201 and the substrate 100.

[0043] Example 7: Based on any of the above examples, the temperature-sensitive plastic column 202 is a nickel-titanium shape memory alloy column, and the critical temperature range is 30-50°C, preferably 40°C.

[0044] Example 8: Based on any of the above examples, a lead plate is fixed to the lower surface of the substrate 100 in the vertical direction. The size of the lead plate is adapted to the size of the substrate 100 to shield radiation from penetrating the bed board to other areas.

[0045] Example 9: Based on any of the above embodiments, the outer shape of the shell 201 and the outer shape of the temperature-sensitive plastic column 202 are both regular polygonal columns, preferably regular hexagonal columns.

[0046] Example 10: Based on any of the above examples, please refer to... Figure 3The substrate 100 is a magnesium alloy frame structure with a honeycomb structure. Specifically, in practical implementation, it is preferably manufactured by 3D printing, which reduces weight to a certain extent compared to traditional steel frames while ensuring overall rigidity and good overall performance. In addition, in practical implementation, the substrate 100 uses a low-attenuation material to prevent the substrate 100 from having a large attenuation rate of radiation, which would affect the dose calculation.

[0047] This utility model is illustrated through several embodiments. Those skilled in the art should understand that various modifications, adjustments, or equivalent substitutions can be made to the features in these embodiments without departing from the core spirit and scope of this utility model. Based on the guiding principles of this utility model, those skilled in the art can make appropriate adjustments to the embodiments according to specific application scenarios and materials without exceeding the protection scope of this utility model. It should be noted that the embodiments described in this utility model are only a part of the many implementations of this utility model, and not all of them. The various components of the embodiments of this utility model shown in the accompanying drawings can be arranged and designed in different configurations according to actual needs. Therefore, the above detailed description of the embodiments shown in the accompanying drawings is not intended to limit the protection scope of this utility model, but only to illustrate some embodiments of this utility model. The protection scope of this utility model should not be limited to the specific embodiments disclosed herein. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A radiotherapy treatment bed structure, characterized in that, The system includes a substrate, on which a plurality of mounting positions are provided, and the mounting positions are arranged in an array; one end of a support column assembly is detachably connected to each mounting position. Each of the aforementioned support column assemblies is provided with a temperature-sensitive plastic column, and one end of each of the aforementioned temperature-sensitive plastic columns is detachably connected to the corresponding mounting position; each of the aforementioned temperature-sensitive plastic columns enters a deformation state when the temperature is greater than or equal to the critical temperature, and in the deformation state, it can deform under the action of external force; It also includes a constant temperature heating device, which is detachably connected to the substrate. When the constant temperature heating device is working, it can continuously deliver heat to the temperature-sensitive plastic column, so that the temperature-sensitive plastic column is heated to a temperature greater than or equal to the critical temperature.

2. The radiotherapy treatment bed structure according to claim 1, characterized in that, The substrate is composed of multiple splicing panels. A fitting is provided at the joint of any two adjacent splicing panels. The fitting includes a fitting block and a fitting groove. The fitting block can be inserted into or removed from the fitting groove in a first direction, and the fitting groove can restrict the displacement of the fitting block in a second direction. Multiple support column assemblies are respectively installed on each splicing panel. Each splicing panel is detachably connected to a constant temperature heating device. Each constant temperature heating device can independently deliver heat to the temperature-sensitive plastic column of the corresponding splicing panel.

3. The radiotherapy treatment bed structure according to claim 1 or 2, characterized in that, The constant temperature heating device is a constant temperature heating plate, which is detachably connected to the upper surface of the substrate in the vertical direction. Each of the mounting positions is disposed on the upper surface of the constant temperature heating plate. The constant temperature heating plate includes heating wires that are fixedly connected to the constant temperature heating plate and are evenly distributed. The heating wires are used to be electrically connected to an external DC power supply.

4. The radiotherapy treatment bed structure according to claim 1, characterized in that, The radiotherapy treatment bed structure also includes a silicone pad, which covers the end of each of the support column assemblies away from the substrate.

5. The radiotherapy treatment bed structure according to claim 4, characterized in that, The silicone pad contains uniformly distributed heating wires, which are used to connect to an external DC power supply. Each of the support column assemblies has a temperature-conducting part on its top, which is in contact with the temperature-sensitive plastic column.

6. The radiotherapy treatment bed structure according to claim 1, characterized in that, The support column assembly also includes a housing, which is slidably connected to the substrate. The temperature-sensitive plastic column is located inside the housing, and the central axis of the temperature-sensitive plastic column coincides with the central axis of the housing. The other end of the temperature-sensitive plastic column is fixedly connected to the housing. A spring is also sleeved on the outer periphery of the temperature-sensitive plastic column, and the two ends of the spring are fixedly connected to the top of the housing and the corresponding mounting position, respectively.

7. The radiotherapy treatment bed structure according to claim 1, characterized in that, The temperature-sensitive plastic column is a nickel-titanium shape memory alloy column, and the critical temperature range is 30 to 50°C.

8. The radiotherapy treatment bed structure according to claim 6, characterized in that, Both the outer shape of the shell and the outer shape of the temperature-sensitive plastic column are regular polygonal columns.

9. The radiotherapy treatment bed structure according to claim 1, characterized in that, The substrate is a magnesium alloy frame structure and has a honeycomb structure.

10. The radiotherapy treatment bed structure according to claim 1, characterized in that, A lead plate is fixed to the lower surface of the substrate along the vertical direction, and the size of the lead plate is adapted to the size of the substrate.

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