Movable treatment bed for neutron treatment

Abstract

The utility model relates to the technical field of medical instruments, in particular to a movable treatment couch for neutron therapy, which comprises a bottom plate assembly, a head support assembly and an adjusting device for adjusting the relative position of the bottom plate assembly and the head support assembly. The adjusting device comprises an adjusting guide rail arranged on the bottom plate assembly and a sliding assembly arranged on the head support assembly, and the sliding assembly is connected with the adjusting guide rail in a sliding mode. According to the utility model, the included angle between the head support assembly and the bottom plate assembly can be adjusted, so that the central position of a head tumor of a patient can be close to neutron beam equipment as far as possible, thereby improving the utilization efficiency and treatment effect of neutron beams.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and more specifically, to a movable treatment bed for neutron therapy. Background Technology

[0002] Neutron therapy is a new technology in radiotherapy. Compared with traditional X-rays, fast neutrons have high LET (linear energy transfer) characteristics, resulting in rapid energy loss in biological tissues and the ability to transfer large amounts of energy over short distances, thus exhibiting a stronger killing effect on tumor cells. During neutron therapy, patients first inject or ingest compounds containing the boron-10 isotope, such as boron phenylalanine (BPA) and sodium borohydride (NaBH4). These boron-containing compounds selectively accumulate in tumor cells, and then a neutron beam irradiates the tumor site. Boron-10 undergoes a nuclear reaction with neutrons, producing high-LET alpha particles and lithium-7 particles. These particles release a large amount of energy over short distances, precisely killing tumor cells with minimal damage to surrounding normal tissues.

[0003] However, because neutrons are scattered or absorbed when passing through media such as air, the intensity and energy distribution of the neutron beam change. This requires the equipment that emits the neutron beam to be as close as possible to the center of the patient's tumor. However, traditional radiotherapy beds cannot meet this requirement, as the distance between the equipment and the center of the tumor in the patient's head is relatively large, which reduces the utilization efficiency and treatment effect of the neutron beam. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing neutron beam devices where the distance between the neutron beam device and the tumor center of the patient's head is too large, and to provide a mobile treatment bed for neutron therapy that allows the tumor center of the patient's head to be as close as possible to the neutron beam device, thereby improving the utilization efficiency and treatment effect of the neutron beam.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A movable treatment bed for neutron therapy is provided, including a base plate assembly, a headrest assembly, and an adjustment device for adjusting the relative position of the base plate assembly and the headrest assembly. The adjustment device includes an adjustment guide rail disposed on the base plate assembly and a sliding component disposed on the headrest assembly, wherein the sliding component is slidably connected to the adjustment guide rail.

[0007] The present invention relates to a movable treatment bed for neutron therapy. The relative positions of the base plate assembly and the head support assembly can be adjusted using an adjustment device. The head support assembly is adjusted to a suitable position by sliding the sliding component on the adjustment guide rail on the base plate assembly, so that the center of the tumor on the patient's head can be as close as possible to the neutron beam equipment, thereby improving the utilization efficiency and treatment effect of the neutron beam.

[0008] Furthermore, both the adjusting guide rail and the sliding component are arc-shaped, and they are concentric arcs with the same radius. The sliding component slides along the arc-shaped adjusting guide rail, changing the angle between the headrest assembly and the base plate assembly; simultaneously, ensuring that the centers of the adjusting guide rail and the sliding component coincide and have the same radius guarantees that the sliding component can slide smoothly and stably on the adjusting guide rail without jamming.

[0009] Furthermore, the arc length of the adjusting guide rail is greater than the arc length of the sliding component. This greater arc length increases the angular adjustment range between the headrest assembly and the base plate assembly, allowing the treatment bed to adapt to different tumor locations in different patients.

[0010] Furthermore, the adjusting guide rail is provided with a positioning groove, and the sliding component is provided with a positioning protrusion, which engages with the positioning groove. The engagement of the positioning protrusion on the sliding component with the positioning groove on the adjusting guide rail allows medical personnel to intuitively feel the angle range between the headrest component and the base plate component during use, facilitating the selection of a specific angle.

[0011] Furthermore, the top and bottom surfaces of the base plate assembly are both provided with adjusting guide rails, and the sliding assembly includes a first sliding part and a second sliding part disposed opposite to each other, both of which are slidably connected to the adjusting guide rails. The first sliding part and the second sliding part are slidably connected to the adjusting guide rails on the top and bottom surfaces of the base plate assembly, respectively, providing a dual fixing effect to ensure that the headrest assembly will not wobble significantly during rotation and use, thereby increasing overall stability.

[0012] Furthermore, an angle adjustment switch is provided between the first sliding part and the second sliding part to fix the relative position of the sliding assembly and the base plate assembly. Opening the angle adjustment switch allows the headrest assembly to be moved, adjusting its relative position to the base plate assembly; closing the angle adjustment switch fixes the position of the headrest assembly, keeping the angle between the headrest assembly and the base plate assembly constant.

[0013] Furthermore, the angle adjustment switch includes a knob and a pressure block. One end of the knob abuts against the second sliding part, and the other end passes through the pressure block and is threadedly connected to the first sliding part. The pressure block is threadedly connected to the knob and abuts against the first sliding part. With one end of the knob abutting against the second sliding part and the other end threadedly connected to the first sliding part, tightening the knob causes the pressure block to move upward, reducing the distance between the first and second sliding parts, thereby increasing the friction between the sliding assembly and the adjusting guide rail, achieving a locking effect.

[0014] Furthermore, a locking groove is provided between the first sliding part and the second sliding part, and a protrusion is provided in the locking groove. One side of the protrusion abuts against the base plate assembly, and the other side abuts against the pressure block. The knob drives the pressure block to move, causing the pressure block to abut against the protrusion, thereby increasing the friction between the first sliding part and the adjusting guide rail and preventing the headrest assembly from shifting position during use.

[0015] Furthermore, the cross-sectional shape of the protrusion is a right-angled trapezoid, and the contact point between the pressure block and the protrusion is an inclined surface. The protrusion's cross-sectional shape is chosen to be a right-angled trapezoid, with its inclined side contacting the pressure block. This decomposes the force between the pressure block and the protrusion into horizontal and vertical components. By adjusting the angle of the inclined surface, the horizontal clamping force can be enhanced, thus achieving a better clamping and fixing effect with a smaller vertical force.

[0016] Furthermore, the headrest assembly has multiple sets of diaphragm mounting portions on its side for mounting positioning diaphragms. Each diaphragm mounting portion has a mounting groove, and the positioning diaphragm is positioned within the mounting groove. During neutron therapy, to ensure treatment accuracy and effectiveness, thermoplastic diaphragms are typically used to fix the patient's head position. The headrest assembly has multiple sets of diaphragm mounting portions on its side; by inserting the positioning diaphragm into the mounting groove on the diaphragm mounting portion, the patient's head position can be fixed, thereby improving treatment accuracy.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The angle between the head support assembly and the base plate assembly can be adjusted so that the center of the patient's head tumor can be as close as possible to the neutron beam equipment, thereby improving the utilization efficiency and treatment effect of the neutron beam;

[0019] 2. The guide rail, sliding part and angle adjustment switch work together to achieve stepless adjustment of the headrest assembly during rotation, so as to meet the treatment needs of different patients. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a mobile treatment bed used for neutron therapy.

[0021] Figure 2 A cross-sectional view of a mobile treatment bed used for neutron therapy;

[0022] Figure 3 This is a schematic diagram of the headrest assembly.

[0023] Figure 4 This is a bottom view of the base plate assembly.

[0024] In the attached figures: 100, base plate assembly; 200, head support assembly; 210, diaphragm mounting part; 211, mounting groove; 300, adjustment device; 310, adjustment guide rail; 311, positioning groove; 320, sliding assembly; 321, positioning protrusion; 322, first sliding part; 323, second sliding part; 324, knob; 325, pressure block; 326, protrusion. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Example 1

[0028] This embodiment is a first embodiment of a mobile treatment bed for neutron therapy, including a base plate assembly 100, a headrest assembly 200, and an adjustment device 300 for adjusting the relative position of the base plate assembly 100 and the headrest assembly 200. The adjustment device 300 includes an adjustment guide rail 310 disposed on the base plate assembly 100 and a sliding component 320 disposed on the headrest assembly 200, and the sliding component 320 is slidably connected to the adjustment guide rail 310.

[0029] like Figure 1As shown, the movable treatment bed for neutron therapy in this embodiment can use the adjustment device 300 to adjust the relative position of the base plate assembly 100 and the head support assembly 200. By moving the sliding component 320 on the head support assembly 200 on the adjustment guide rail 310 on the base plate assembly 100, the head support assembly 200 is adjusted to a suitable position so that the center of the tumor in the patient's head can be as close as possible to the neutron beam device, thereby improving the utilization efficiency and treatment effect of the neutron beam.

[0030] Both the adjusting guide rail 310 and the sliding component 320 are arc-shaped, and they are concentric arcs with the same radius. The sliding component 320 slides along the arc-shaped adjusting guide rail 310, which can change the angle between the headrest component 200 and the base plate component 100. At the same time, it ensures that the centers of the adjusting guide rail 310 and the sliding component 320 coincide and have the same radius, so that the sliding component 320 can slide smoothly and stably on the adjusting guide rail 310 without jamming.

[0031] The arc length of the adjusting guide rail 310 is greater than the arc length of the sliding component 320. In this embodiment, controlling the arc length of the adjusting guide rail 310 to be greater than the arc length of the sliding component 320 can increase the angle adjustment range between the headrest component 200 and the base plate component 100, allowing the treatment bed to adapt to the tumor location of different patients.

[0032] like Figure 3 , Figure 4 As shown, the adjusting guide rail 310 is provided with a positioning groove 311, and the sliding component 320 is provided with a positioning protrusion 321, which engages with the positioning groove 311. The engagement of the positioning protrusion 321 on the sliding component 320 with the positioning groove 311 on the adjusting guide rail 310 allows medical personnel to intuitively feel the angle range between the headrest component 200 and the base plate component 100 during use, facilitating the selection of a specific angle. In this embodiment, the engagement design of the positioning groove 311 and the positioning protrusion 321 is used for physical positioning. By setting multiple sets of positioning protrusions 321 on the adjusting guide rail 310, a positioning level can be achieved every 15°, providing clear tactile feedback to the user. Simultaneously, angle scale markings can be set on the side of the adjusting guide rail 310, combined with LED positioning indicator lights to achieve visual adjustment.

[0033] The base plate assembly 100 has adjustment guide rails 310 on both its top and bottom surfaces. The sliding assembly 320 includes a first sliding part 322 and a second sliding part 323 arranged opposite to each other, both of which are slidably connected to the adjustment guide rails 310. The first sliding part 322 and the second sliding part 323 are slidably connected to the adjustment guide rails 310 on the top and bottom surfaces of the base plate assembly 100, respectively, providing a double fixing effect to ensure that the headrest assembly 200 will not wobble significantly during rotation and use. The top / bottom double guide rail design, combined with the symmetrically distributed first sliding part 322 and second sliding part 323, forms a multi-point force-bearing structure. At the same time, a built-in counterweight module can automatically balance the change in the center of gravity caused by the displacement of the headrest assembly, thereby increasing the overall stability.

[0034] The working principle of the rotary treatment bed for neutron therapy in this embodiment is as follows: the rotation angle is adjusted by the arc-shaped adjustment guide rail 310 and the sliding component 320 matching the arc-shaped movement. Combined with the physical engagement of the positioning groove 311 and the positioning protrusion 321, and the use of top / bottom double guide rails in conjunction with the symmetrical first sliding part 322 and the second sliding part 323 to form a multi-point stable structure, the angle between the head support component 200 and the base plate component 100 is adjusted so that the center of the tumor on the patient's head can be as close as possible to the neutron beam device, thereby improving the utilization efficiency and treatment effect of the neutron beam.

[0035] Example 2

[0036] This embodiment is a second embodiment of a movable treatment bed for neutron therapy. This embodiment is similar to the first embodiment, except that an angle adjustment switch is provided between the first sliding part 322 and the second sliding part 323 to fix the relative position of the sliding assembly 320 and the base plate assembly 100. Opening the angle adjustment switch allows the headrest assembly 200 to move and adjust its relative position to the base plate assembly 100; closing the angle adjustment switch fixes the position of the headrest assembly 200, keeping the angle between the headrest assembly 200 and the base plate assembly 100 constant.

[0037] like Figure 2 As shown, the angle adjustment switch includes a knob 324 and a pressure block 325. One end of the knob 324 abuts against the second sliding part 323, and the other end passes through the pressure block 325 and is threadedly connected to the first sliding part 322. The pressure block 325 is threadedly connected to the knob 324 and abuts against the first sliding part 322. One end of the knob 324 abuts against the second sliding part 323, and the other end is threadedly connected to the first sliding part 322. By tightening the knob 324, the pressure block 325 is driven to move upward, reducing the distance between the first sliding part 322 and the second sliding part 323, thereby increasing the friction between the sliding assembly 320 and the adjusting guide rail 310, achieving a locking effect.

[0038] A locking groove is provided between the first sliding part 322 and the second sliding part 323. A protrusion 326 is provided in the locking groove. One side of the protrusion 326 abuts against the base plate assembly 100, and the other side abuts against the pressure block 325. The knob 324 drives the pressure block 325 to move, causing the pressure block 325 to abut against the protrusion 326, thereby increasing the friction between the first sliding part 322 and the adjusting guide rail 310 and preventing the headrest assembly 200 from shifting position during use.

[0039] The cross-sectional shape of the protrusion 326 is a right-angled trapezoid, and the contact point between the pressure block 325 and the protrusion 326 is an inclined surface. The right-angled trapezoidal cross-sectional shape of the protrusion 326, with its inclined side contacting the pressure block 325, decomposes the force between the pressure block 325 and the protrusion 326 into horizontal and vertical components. By adjusting the angle of the inclined surface, the horizontal clamping force can be enhanced, thus achieving a better clamping and fixing effect with a smaller vertical force.

[0040] The working principle of the rotary treatment bed for neutron therapy in this embodiment is as follows: The angle adjustment switch locks and releases the sliding component 320 through the linkage of the knob 324 and the pressure block 325. One end of the knob abuts against the second sliding part 323, and the other end is threadedly connected to the first sliding part 322. When the knob 324 is tightened, it drives the pressure block 325 to rise along the thread, so that the inclined surface of the pressure block 325 interacts with the inclined surface of the right-angled trapezoidal protrusion 326 on the first sliding part 322, decomposing the vertical pressure into a horizontal clamping force. By shortening the distance between the first sliding part 322 and the second sliding part 323, the friction between the sliding component 320 and the adjusting guide rail 310 is increased, thereby realizing the rapid locking or free sliding adjustment of the headrest component 200.

[0041] Example 3

[0042] This embodiment is the third embodiment of a mobile treatment bed for neutron therapy. This embodiment is similar to Embodiment 1, except that, as... Figure 1 , Figure 3 As shown, the head support assembly 200 has multiple sets of diaphragm mounting portions 210 on its side for mounting positioning diaphragms. Each diaphragm mounting portion 210 has a mounting groove 211 in which the positioning diaphragm is placed. During neutron therapy, to ensure treatment accuracy and effectiveness, thermoplastic diaphragms are typically used to fix the patient's head position. The head support assembly 200 has multiple sets of diaphragm mounting portions 210 on its side; by inserting the positioning diaphragm into the mounting groove 211 on the diaphragm mounting portion 210, the patient's head position can be fixed, thereby improving treatment accuracy.

[0043] The mounting slot 211 is perpendicular to the headrest assembly 200. The mounting slot 211, which is perpendicular to the headrest assembly 200, allows the diaphragm to be installed in the vertical direction, reducing the horizontal area and allowing the headrest assembly 200 to be placed closer to the neutron beam device, reducing the distance between the patient and the device and improving the treatment effect.

[0044] The working principle of the rotating treatment bed for neutron therapy in this embodiment is as follows: The head support assembly 200 integrates multiple vertically distributed diaphragm mounting parts 210 on its side. Its mounting groove 211 forms a three-dimensional mesh fixing structure by inserting thermoplastic positioning diaphragms. During treatment, the diaphragms are precisely shaped and locked to lock the patient's head. With the adjustment of the rotation angle of the head support assembly 200, the straight-line distance between the tumor target area and the neutron beam source is shortened, which significantly improves the targeting accuracy of boron neutron capture therapy.

[0045] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A mobile treatment bed for neutron therapy, characterized in that, The device includes a base plate assembly (100), a headrest assembly (200), and an adjustment device (300) for adjusting the relative position of the base plate assembly (100) and the headrest assembly (200). The adjustment device (300) includes an adjustment guide rail (310) disposed on the base plate assembly (100) and a sliding component (320) disposed on the headrest assembly (200). The sliding component (320) is slidably connected to the adjustment guide rail (310).

2. The mobile treatment bed for neutron therapy according to claim 1, characterized in that, The adjusting guide rail (310) and the sliding component (320) are both arc-shaped, and the adjusting guide rail (310) and the sliding component (320) are concentric arcs with the same radius.

3. The mobile treatment bed for neutron therapy according to claim 2, characterized in that, The arc length of the adjusting guide rail (310) is greater than the arc length of the sliding component (320).

4. The mobile treatment bed for neutron therapy according to claim 1, characterized in that, The adjusting guide rail (310) is provided with a positioning groove (311), and the sliding component (320) is provided with a positioning protrusion (321), which engages with the positioning groove (311).

5. The mobile treatment bed for neutron therapy according to claim 1, characterized in that, The base plate assembly (100) is provided with adjustment guide rails (310) on both the top and bottom surfaces. The sliding assembly (320) includes a first sliding part (322) and a second sliding part (323) arranged opposite to each other. The first sliding part (322) and the second sliding part (323) are slidably connected to the adjustment guide rails (310) on the top and bottom surfaces, respectively.

6. The mobile treatment bed for neutron therapy according to claim 5, characterized in that, An angle adjustment switch is provided between the first sliding part (322) and the second sliding part (323) for fixing the relative position of the sliding assembly (320) and the base plate assembly (100).

7. The mobile treatment bed for neutron therapy according to claim 6, characterized in that, The angle adjustment switch includes a knob (324) and a pressure block (325). One end of the knob (324) abuts against the second sliding part (323), and the other end passes through the pressure block (325) and is threadedly connected to the first sliding part (322). The pressure block (325) is threadedly connected to the knob (324) and abuts against the first sliding part (322).

8. The mobile treatment bed for neutron therapy according to claim 7, characterized in that, A snap-fit ​​groove is provided between the first sliding part (322) and the second sliding part (323). A protrusion (326) is provided in the snap-fit ​​groove. One side of the protrusion (326) abuts against the base plate assembly (100), and the other side abuts against the pressure block (325).

9. The mobile treatment bed for neutron therapy according to claim 8, characterized in that, The cross-sectional shape of the protrusion (326) is a right trapezoid, and the contact point between the pressure block (325) and the protrusion (326) is an inclined surface.

10. The mobile treatment bed for neutron therapy according to any one of claims 1 to 7, characterized in that, The head support assembly (200) has multiple sets of diaphragm mounting portions (210) on its side for mounting positioning diaphragms. Each diaphragm mounting portion (210) has a mounting groove (211) on it, and the positioning diaphragm is disposed in the mounting groove (211).

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